67 Commits

Author	SHA1	Message	Date
Prasad Sodagudi	f6ff4f012c	sched: Add a check for cpu unbound deferrable timers ... Add a check for cpu unbound deferrable timer expiry and raise softirq for handling the expired timers so that the CPU can process the cpu unbound deferrable times as early as possible when a cpu tries to enter/exit idle loop. Change-Id: Ieffa74fa22a4d25493f5590b5ac1e0d784fcbbad Signed-off-by: Prasad Sodagudi <psodagud@codeaurora.org>	2018-01-31 14:30:01 -08:00
Viresh Kumar	ec772d58b1	timer: create timer_quiesce_cpu() to isolate CPU from timers ... To isolate CPUs (isolate from timers) from sysfs using cpusets, we need some support from the timer core. i.e. A routine timer_quiesce_cpu() which would migrates away all the unpinned timers, but shouldn't touch the pinned ones. This patch creates this routine. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> [forward port to 3.18] Signed-off-by: Santosh Shukla <santosh.shukla@linaro.org> [ohaugan@codeaurora.org: Port to 4.4. Fixes for compilation error] Git-commit: 313910b70ea0c73f8789d9189c11e1f339080646 Git-repo: git://git.linaro.org/people/mike.holmes/santosh.shukla/lng-isol.git Signed-off-by: Olav Haugan <ohaugan@codeaurora.org> [rameezmustafa@codeaurora.org: Port to msm-4.9 and rebase to change patch dependency order.] Signed-off-by: Syed Rameez Mustafa <rameezmustafa@codeaurora.org> [markivx: Port to 4.14, fix merge conflicts] Signed-off-by: Vikram Mulukutla <markivx@codeaurora.org> Change-Id: I4795aeffd1be41830ac295a1e2e8f36fb05e98b7 [satyap@codeaurora.org: resolve trivial merge conflicts] Signed-off-by: Satya Durga Srinivasu Prabhala <satyap@codeaurora.org>	2018-01-22 09:09:00 -08:00
Runmin Wang	5682ea9f33	Merge remote-tracking branch 'remotes/origin/tmp-9189141' into msm-4.14 ... * remotes/origin/tmp-9189141: Linux 4.14.13 KVM: s390: prevent buffer overrun on memory hotplug during migration KVM: s390: fix cmma migration for multiple memory slots mtd: nand: pxa3xx: Fix READOOB implementation parisc: qemu idle sleep support parisc: Fix alignment of pa_tlb_lock in assembly on 32-bit SMP kernel apparmor: fix regression in mount mediation when feature set is pinned x86/microcode/AMD: Add support for fam17h microcode loading Input: elantech - add new icbody type 15 powerpc/mm: Fix SEGV on mapped region to return SEGV_ACCERR ARC: uaccess: dont use "l" gcc inline asm constraint modifier iommu/arm-smmu-v3: Cope with duplicated Stream IDs iommu/arm-smmu-v3: Don't free page table ops twice kernel/signal.c: remove the no longer needed SIGNAL_UNKILLABLE check in complete_signal() kernel/signal.c: protect the SIGNAL_UNKILLABLE tasks from !sig_kernel_only() signals kernel/signal.c: protect the traced SIGNAL_UNKILLABLE tasks from SIGKILL x86 / CPU: Always show current CPU frequency in /proc/cpuinfo x86 / CPU: Avoid unnecessary IPIs in arch_freq_get_on_cpu() fscache: Fix the default for fscache_maybe_release_page() sunxi-rsb: Include OF based modalias in device uevent drm/i915: Apply Display WA #1183 on skl, kbl, and cfl drm/i915: Disable DC states around GMBUS on GLK crypto: chelsio - select CRYPTO_GF128MUL crypto: pcrypt - fix freeing pcrypt instances crypto: chacha20poly1305 - validate the digest size crypto: n2 - cure use after free efi/capsule-loader: Reinstate virtual capsule mapping btrfs: fix refcount_t usage when deleting btrfs_delayed_nodes userfaultfd: clear the vma->vm_userfaultfd_ctx if UFFD_EVENT_FORK fails mm/sparse.c: wrong allocation for mem_section mm/mprotect: add a cond_resched() inside change_pmd_range() kernel/acct.c: fix the acct->needcheck check in check_free_space() x86/pti: Rename BUG_CPU_INSECURE to BUG_CPU_MELTDOWN x86/alternatives: Add missing '\n' at end of ALTERNATIVE inline asm x86/tlb: Drop the _GPL from the cpu_tlbstate export x86/events/intel/ds: Use the proper cache flush method for mapping ds buffers x86/kaslr: Fix the vaddr_end mess x86/mm: Map cpu_entry_area at the same place on 4/5 level x86/mm: Set MODULES_END to 0xffffffffff000000 ANDROID: netfilter: xt_qtaguid: Fix 4.14 compilation ANDROID: Squashfs: optimize reading uncompressed data ANDROID: Squashfs: implement .readpages() ANDROID: Squashfs: replace buffer_head with BIO ANDROID: Squashfs: refactor page_actor ANDROID: usb: f_fs: Prevent gadget unbind if it is already unbound Linux 4.14.12 rtc: m41t80: remove unneeded checks from m41t80_sqw_set_rate rtc: m41t80: avoid i2c read in m41t80_sqw_is_prepared rtc: m41t80: avoid i2c read in m41t80_sqw_recalc_rate rtc: m41t80: fix m41t80_sqw_round_rate return value rtc: m41t80: m41t80_sqw_set_rate should return 0 on success Revert "xfrm: Fix stack-out-of-bounds read in xfrm_state_find." x86/process: Define cpu_tss_rw in same section as declaration x86/pti: Switch to kernel CR3 at early in entry_SYSCALL_compat() x86/dumpstack: Print registers for first stack frame x86/dumpstack: Fix partial register dumps x86/pti: Make sure the user/kernel PTEs match x86/cpu, x86/pti: Do not enable PTI on AMD processors capabilities: fix buffer overread on very short xattr exec: Weaken dumpability for secureexec Linux 4.14.11 tty: fix tty_ldisc_receive_buf() documentation n_tty: fix EXTPROC vs ICANON interaction with TIOCINQ (aka FIONREAD) x86/ldt: Make LDT pgtable free conditional x86/ldt: Plug memory leak in error path x86/espfix/64: Fix espfix double-fault handling on 5-level systems x86-32: Fix kexec with stack canary (CONFIG_CC_STACKPROTECTOR) x86/mm: Remove preempt_disable/enable() from __native_flush_tlb() x86/smpboot: Remove stale TLB flush invocations nohz: Prevent a timer interrupt storm in tick_nohz_stop_sched_tick() staging: android: ion: Fix dma direction for dma_sync_sg_for_cpu/device drivers: base: cacheinfo: fix cache type for non-architected system cache phy: tegra: fix device-tree node lookups binder: fix proc->files use-after-free timers: Reinitialize per cpu bases on hotplug timers: Invoke timer_start_debug() where it makes sense timers: Use deferrable base independent of base::nohz_active usb: xhci: Add XHCI_TRUST_TX_LENGTH for Renesas uPD720201 USB: Fix off by one in type-specific length check of BOS SSP capability usb: add RESET_RESUME for ELSA MicroLink 56K usb: Add device quirk for Logitech HD Pro Webcam C925e USB: serial: option: adding support for YUGA CLM920-NC5 USB: serial: option: add support for Telit ME910 PID 0x1101 USB: serial: qcserial: add Sierra Wireless EM7565 USB: serial: ftdi_sio: add id for Airbus DS P8GR USB: chipidea: msm: fix ulpi-node lookup usbip: vhci: stop printing kernel pointer addresses in messages usbip: stub: stop printing kernel pointer addresses in messages usbip: prevent leaking socket pointer address in messages usbip: fix usbip bind writing random string after command in match_busid sparc64: repair calling incorrect hweight function from stubs skbuff: in skb_copy_ubufs unclone before releasing zerocopy skbuff: skb_copy_ubufs must release uarg even without user frags skbuff: orphan frags before zerocopy clone Revert "mlx5: move affinity hints assignments to generic code" ipv6: set all.accept_dad to 0 by default ipv4: fib: Fix metrics match when deleting a route phylink: ensure AN is enabled phylink: ensure the PHY interface mode is appropriately set bnxt_en: Fix sources of spurious netpoll warnings net: sched: fix static key imbalance in case of ingress/clsact_init error vxlan: restore dev->mtu setting based on lower device net/mlx5: FPGA, return -EINVAL if size is zero tcp: refresh tcp_mstamp from timers callbacks ipv6: Honor specified parameters in fibmatch lookup net: phy: marvell: Limit 88m1101 autoneg errata to 88E1145 as well. tcp: fix potential underestimation on rcv_rtt mlxsw: spectrum: Disable MAC learning for ovs port tipc: fix hanging poll() for stream sockets sctp: make sure stream nums can match optlen in sctp_setsockopt_reset_streams s390/qeth: fix error handling in checksum cmd callback net: dsa: bcm_sf2: Clear IDDQ_GLOBAL_PWR bit for PHY sfc: pass valid pointers from efx_enqueue_unwind openvswitch: Fix pop_vlan action for double tagged frames net/mlx5: Fix error flow in CREATE_QP command net/mlx5e: Prevent possible races in VXLAN control flow net/mlx5e: Add refcount to VXLAN structure net/mlx5e: Fix features check of IPv6 traffic net/mlx5e: Fix possible deadlock of VXLAN lock net/mlx5: Fix rate limit packet pacing naming and struct tcp: invalidate rate samples during SACK reneging sock: free skb in skb_complete_tx_timestamp on error net: phy: micrel: ksz9031: reconfigure autoneg after phy autoneg workaround net: Fix double free and memory corruption in get_net_ns_by_id() net: bridge: fix early call to br_stp_change_bridge_id and plug newlink leaks ipv4: Fix use-after-free when flushing FIB tables ip6_gre: fix device features for ioctl setup adding missing rcu_read_unlock in ipxip6_rcv sctp: Replace use of sockets_allocated with specified macro. net: mvmdio: disable/unprepare clocks in EPROBE_DEFER case net: ipv4: fix for a race condition in raw_sendmsg s390/qeth: update takeover IPs after configuration change s390/qeth: lock IP table while applying takeover changes s390/qeth: don't apply takeover changes to RXIP s390/qeth: apply takeover changes when mode is toggled tcp_bbr: reset long-term bandwidth sampling on loss recovery undo tcp_bbr: reset full pipe detection on loss recovery undo tg3: Fix rx hang on MTU change with 5717/5719 tcp md5sig: Use skb's saddr when replying to an incoming segment tcp_bbr: record "full bw reached" decision in new full_bw_reached bit RDS: Check cmsg_len before dereferencing CMSG_DATA ptr_ring: add barriers net: reevalulate autoflowlabel setting after sysctl setting net: qmi_wwan: add Sierra EM7565 1199:9091 netlink: Add netns check on taps net: igmp: Use correct source address on IGMPv3 reports net: fec: unmap the xmit buffer that are not transferred by DMA ipv6: mcast: better catch silly mtu values ipv4: igmp: guard against silly MTU values kbuild: add '-fno-stack-check' to kernel build options block: don't let passthrough IO go into .make_request_fn() block: fix blk_rq_append_bio cpufreq: schedutil: Use idle_calls counter of the remote CPU ALSA: hda - Fix missing COEF init for ALC225/295/299 ALSA: hda - fix headset mic detection issue on a Dell machine ALSA: hda - change the location for one mic on a Lenovo machine ALSA: hda - Add MIC_NO_PRESENCE fixup for 2 HP machines ALSA: hda: Drop useless WARN_ON() IB/core: Verify that QP is security enabled in create and destroy IB/uverbs: Fix command checking as part of ib_uverbs_ex_modify_qp() IB/mlx5: Serialize access to the VMA list IB/hfi: Only read capability registers if the capability exists gpio: fix "gpio-line-names" property retrieval ASoC: tlv320aic31xx: Fix GPIO1 register definition ASoC: twl4030: fix child-node lookup ASoC: fsl_ssi: AC'97 ops need regmap, clock and cleaning up on failure ASoC: da7218: fix fix child-node lookup ASoC: wm_adsp: Fix validation of firmware and coeff lengths ASoC: codecs: msm8916-wcd: Fix supported formats iw_cxgb4: Only validate the MSN for successful completions ring-buffer: Do no reuse reader page if still in use ring-buffer: Mask out the info bits when returning buffer page length x86/ldt: Make the LDT mapping RO x86/mm/dump_pagetables: Allow dumping current pagetables x86/mm/dump_pagetables: Check user space page table for WX pages x86/mm/dump_pagetables: Add page table directory to the debugfs VFS hierarchy x86/mm/pti: Add Kconfig x86/dumpstack: Indicate in Oops whether PTI is configured and enabled x86/mm: Clarify the whole ASID/kernel PCID/user PCID naming x86/mm: Use INVPCID for __native_flush_tlb_single() x86/mm: Optimize RESTORE_CR3 x86/mm: Use/Fix PCID to optimize user/kernel switches x86/mm: Abstract switching CR3 x86/mm: Allow flushing for future ASID switches x86/pti: Map the vsyscall page if needed x86/pti: Put the LDT in its own PGD if PTI is on x86/mm/64: Make a full PGD-entry size hole in the memory map x86/events/intel/ds: Map debug buffers in cpu_entry_area x86/cpu_entry_area: Add debugstore entries to cpu_entry_area x86/mm/pti: Map ESPFIX into user space x86/mm/pti: Share entry text PMD x86/entry: Align entry text section to PMD boundary x86/mm/pti: Share cpu_entry_area with user space page tables x86/mm/pti: Force entry through trampoline when PTI active x86/mm/pti: Add functions to clone kernel PMDs x86/mm/pti: Populate user PGD x86/mm/pti: Allocate a separate user PGD x86/mm/pti: Allow NX poison to be set in p4d/pgd x86/mm/pti: Add mapping helper functions x86/pti: Add the pti= cmdline option and documentation x86/mm/pti: Add infrastructure for page table isolation x86/mm/pti: Prepare the x86/entry assembly code for entry/exit CR3 switching x86/mm/pti: Disable global pages if PAGE_TABLE_ISOLATION=y x86/cpufeatures: Add X86_BUG_CPU_INSECURE tracing: Fix crash when it fails to alloc ring buffer tracing: Fix possible double free on failure of allocating trace buffer tracing: Remove extra zeroing out of the ring buffer page Conflicts: drivers/staging/android/ion/ion.c kernel/time/timer.c Change-Id: Ia5b16c96ab44e640e2f10ab535c4c672b670cbdc Signed-off-by: Runmin Wang <runminw@codeaurora.org>	2018-01-11 17:52:14 -08:00
Thomas Gleixner	6fae6de72a	timers: Reinitialize per cpu bases on hotplug ... commit 26456f87aca7157c057de65c9414b37f1ab881d1 upstream. The timer wheel bases are not (re)initialized on CPU hotplug. That leaves them with a potentially stale clk and next_expiry valuem, which can cause trouble then the CPU is plugged. Add a prepare callback which forwards the clock, sets next_expiry to far in the future and reset the control flags to a known state. Set base->must_forward_clk so the first timer which is queued will try to forward the clock to current jiffies. Fixes: 500462a9de65 ("timers: Switch to a non-cascading wheel") Reported-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Sebastian Siewior <bigeasy@linutronix.de> Cc: Anna-Maria Gleixner <anna-maria@linutronix.de> Link: https://lkml.kernel.org/r/alpine.DEB.2.20.1712272152200.2431@nanos Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>	2018-01-02 20:31:15 +01:00
Runmin Wang	253c6dff4b	Merge remote-tracking branch 'remotes/origin/tmp-39dae59' into msm-next ... * remotes/msm-4.9/tmp-39dae59: Linux 4.14-rc8 x86/module: Detect and skip invalid relocations objtool: Prevent GCC from merging annotate_unreachable(), take 2 Revert "x86/mm: Stop calling leave_mm() in idle code" Documentation: Add Frank Rowand to list of enforcement statement endorsers doc: add Willy Tarreau to the list of enforcement statement endorsers tools/headers: Synchronize kernel ABI headers objtool: Resync objtool's instruction decoder source code copy with the kernel's latest version Input: sparse-keymap - send sync event for KE_SW/KE_VSW Input: ar1021_i2c - set INPUT_PROP_DIRECT arch/tile: Implement ->set_state_oneshot_stopped() Update MIPS email addresses x86: CPU: Fix up "cpu MHz" in /proc/cpuinfo mm, swap: fix race between swap count continuation operations mm/huge_memory.c: deposit page table when copying a PMD migration entry initramfs: fix initramfs rebuilds w/ compression after disabling fs/hugetlbfs/inode.c: fix hwpoison reserve accounting ocfs2: fstrim: Fix start offset of first cluster group during fstrim mm, /proc/pid/pagemap: fix soft dirty marking for PMD migration entry userfaultfd: hugetlbfs: prevent UFFDIO_COPY to fill beyond the end of i_size Documentation: Add Tim Bird to list of enforcement statement endorsers net: systemport: Correct IPG length settings tcp: do not mangle skb->cb[] in tcp_make_synack() fib: fib_dump_info can no longer use __in_dev_get_rtnl stmmac: use of_property_read_u32 instead of read_u8 net_sched: hold netns refcnt for each action net_sched: acquire RTNL in tc_action_net_exit() powerpc/perf: Fix core-imc hotplug callback failure during imc initialization Kbuild: don't pass "-C" to preprocessor when processing linker scripts Revert "x86: do not use cpufreq_quick_get() for /proc/cpuinfo "cpu MHz"" arm64: ensure __dump_instr() checks addr_limit KVM: x86: Update APICv on APIC reset KVM: VMX: Do not fully reset PI descriptor on vCPU reset kvm: Return -ENODEV from update_persistent_clock futex: futex_wake_op, do not fail on invalid op MIPS: Update email address for Marcin Nowakowski License cleanup: add SPDX license identifier to uapi header files with a license License cleanup: add SPDX license identifier to uapi header files with no license License cleanup: add SPDX GPL-2.0 license identifier to files with no license KEYS: fix out-of-bounds read during ASN.1 parsing KEYS: trusted: fix writing past end of buffer in trusted_read() KEYS: return full count in keyring_read() if buffer is too small net: vrf: correct FRA_L3MDEV encode type tcp_nv: fix division by zero in tcpnv_acked() drm/amdgpu: allow harvesting check for Polaris VCE drm/amdgpu: return -ENOENT from uvd 6.0 early init for harvesting ARM: add debug ".edata_real" symbol MIPS: smp-cmp: Fix vpe_id build error MAINTAINERS: Update Pistachio platform maintainers MIPS: smp-cmp: Use right include for task_struct signal: Fix name of SIGEMT in #if defined() check MIPS: Update Goldfish RTC driver maintainer email address MIPS: Update RINT emulation maintainer email address MIPS: CPS: Fix use of current_cpu_data in preemptible code x86/mcelog: Get rid of RCU remnants watchdog/hardlockup/perf: Use atomics to track in-use cpu counter watchdog/harclockup/perf: Revert a33d44843d45 ("watchdog/hardlockup/perf: Simplify deferred event destroy") ARM: 8716/1: pass endianness info to sparse drm/i915: Check incoming alignment for unfenced buffers (on i915gm) x86/mm: fix use-after-free of vma during userfaultfd fault ide:ide-cd: fix kernel panic resulting from missing scsi_req_init mmc: dw_mmc: Fix the DTO timeout calculation tcp: fix tcp_mtu_probe() vs highest_sack ipv6: addrconf: increment ifp refcount before ipv6_del_addr() tun/tap: sanitize TUNSETSNDBUF input mlxsw: i2c: Fix buffer increment counter for write transaction netfilter: nf_reject_ipv4: Fix use-after-free in send_reset futex: Fix more put_pi_state() vs. exit_pi_state_list() races powerpc/kprobes: Dereference function pointers only if the address does not belong to kernel text Revert "powerpc64/elfv1: Only dereference function descriptor for non-text symbols" mlxsw: reg: Add high and low temperature thresholds MAINTAINERS: Remove Yotam from mlxfw MAINTAINERS: Update Yotam's E-mail net: hns: set correct return value net: lapbether: fix double free bpf: remove SK_REDIRECT from UAPI net: phy: marvell: Only configure RGMII delays when using RGMII MIPS: SMP: Fix deadlock & online race MIPS: bpf: Fix a typo in build_one_insn() MIPS: microMIPS: Fix incorrect mask in insn_table_MM MIPS: Fix CM region target definitions MIPS: generic: Fix compilation error from include asm/mips-cpc.h MIPS: Fix exception entry when CONFIG_EVA enabled irqchip/irq-mvebu-gicp: Add missing spin_lock init drm/nouveau/kms/nv50: use the correct state for base channel notifier setup MIPS: generic: Fix NI 169445 its build Update MIPS email addresses tile: pass machine size to sparse selftests: lib.mk: print individual test results to console by default RDMA/nldev: Enforce device index check for port callback Revert "PM / QoS: Fix device resume latency PM QoS" Revert "PM / QoS: Fix default runtime_pm device resume latency" scsi: qla2xxx: Fix oops in qla2x00_probe_one error path xfrm: Fix GSO for IPsec with GRE tunnel. ALSA: seq: Fix nested rwsem annotation for lockdep splat ALSA: timer: Add missing mutex lock for compat ioctls tc-testing: fix arg to ip command: -s -> -n net_sched: remove tcf_block_put_deferred() l2tp: hold tunnel in pppol2tp_connect() drm/i915: Hold rcu_read_lock when iterating over the radixtree (vma idr) drm/i915: Hold rcu_read_lock when iterating over the radixtree (objects) drm/i915/edp: read edp display control registers unconditionally drm/i915: Do not rely on wm preservation for ILK watermarks drm/i915: Cancel the modeset retry work during modeset cleanup Mark 'ioremap_page_range()' as possibly sleeping nvme: Fix setting logical block format when revalidating mmc: dw_mmc: Add locking to the CTO timer mmc: dw_mmc: Fix the CTO timeout calculation mmc: dw_mmc: cancel the CTO timer after a voltage switch perf/cgroup: Fix perf cgroup hierarchy support PM / QoS: Fix default runtime_pm device resume latency Revert "ath10k: fix napi_poll budget overflow" ath10k: rebuild crypto header in rx data frames cifs: check MaxPathNameComponentLength != 0 before using it KVM: arm/arm64: vgic-its: Check GITS_BASER Valid bit before saving tables KVM: arm/arm64: vgic-its: Check CBASER/BASER validity before enabling the ITS KVM: arm/arm64: vgic-its: Fix vgic_its_restore_collection_table returned value KVM: arm/arm64: vgic-its: Fix return value for device table restore efi/libstub: arm: omit sorting of the UEFI memory map perf tools: Unwind properly location after REJECT virtio_blk: Fix an SG_IO regression wcn36xx: Remove unnecessary rcu_read_unlock in wcn36xx_bss_info_changed ARM: dts: mvebu: pl310-cache disable double-linefill xfrm: Clear sk_dst_cache when applying per-socket policy. perf symbols: Fix memory corruption because of zero length symbols powerpc/64s/radix: Fix preempt imbalance in TLB flush netfilter: nft_set_hash: disable fast_ops for 2-len keys powerpc: Fix check for copy/paste instructions in alignment handler powerpc/perf: Fix IMC allocation routine xfrm: Fix xfrm_dst_cache memleak ARM: 8715/1: add a private asm/unaligned.h clk: uniphier: fix clock data for PXs3 Documentation: Add my name to kernel enforcement statement nvme-rdma: fix possible hang when issuing commands during ctrl removal arm/arm64: kvm: Disable branch profiling in HYP code arm/arm64: kvm: Move initialization completion message arm/arm64: KVM: set right LR register value for 32 bit guest when inject abort Documentation: kernel-enforcement-statement.rst: proper sort names ASoC: rt5616: fix 0x91 default value Documentation: Add Arm Ltd to kernel-enforcement-statement.rst arm64: dts: uniphier: add STDMAC clock to EHCI nodes ARM: dts: uniphier: add STDMAC clock to EHCI nodes mmc: renesas_sdhi: fix kernel panic in _internal_dmac.c mmc: tmio: fix swiotlb buffer is full Documentation: kernel-enforcement-statement.rst: Remove Red Hat markings Documentation: Add myself to the enforcement statement list Documentation: Sign kernel enforcement statement Add ack for Trond Myklebust to the enforcement statement Documentation: update kernel enforcement support list Documentation: add my name to supporters ASoC: rt5659: connect LOUT Amp with Charge Pump ASoC: rt5659: register power bit of LOUT Amp KVM: arm64: its: Fix missing dynamic allocation check in scan_its_table crypto: x86/chacha20 - satisfy stack validation 2.0 ASoC: rt5663: Change the dev getting function in rt5663_irq ASoC: rt5514: Revert Hotword Model control ASoC: topology: Fix a potential memory leak in 'soc_tplg_dapm_widget_denum_create()' ASoC: topology: Fix a potential NULL pointer dereference in 'soc_tplg_dapm_widget_denum_create()' ASoC: rt5514-spi: check irq status to schedule data copy ASoC: adau17x1: Workaround for noise bug in ADC Conflicts: drivers/gpu/drm/msm/Makefile drivers/soc/qcom/Makefile drivers/staging/android/ion/Makefile include/linux/coresight-stm.h include/trace/events/kmem.h Change-Id: I01f1779762b652b9213924caa3d54f29cf03d285 Signed-off-by: Runmin Wang <runminw@codeaurora.org>	2017-11-06 11:37:20 -08:00
Greg Kroah-Hartman	b24413180f	License cleanup: add SPDX GPL-2.0 license identifier to files with no license ... Many source files in the tree are missing licensing information, which makes it harder for compliance tools to determine the correct license. By default all files without license information are under the default license of the kernel, which is GPL version 2. Update the files which contain no license information with the 'GPL-2.0' SPDX license identifier. The SPDX identifier is a legally binding shorthand, which can be used instead of the full boiler plate text. This patch is based on work done by Thomas Gleixner and Kate Stewart and Philippe Ombredanne. How this work was done: Patches were generated and checked against linux-4.14-rc6 for a subset of the use cases: - file had no licensing information it it. - file was a */uapi/* one with no licensing information in it, - file was a */uapi/* one with existing licensing information, Further patches will be generated in subsequent months to fix up cases where non-standard license headers were used, and references to license had to be inferred by heuristics based on keywords. The analysis to determine which SPDX License Identifier to be applied to a file was done in a spreadsheet of side by side results from of the output of two independent scanners (ScanCode & Windriver) producing SPDX tag:value files created by Philippe Ombredanne. Philippe prepared the base worksheet, and did an initial spot review of a few 1000 files. The 4.13 kernel was the starting point of the analysis with 60,537 files assessed. Kate Stewart did a file by file comparison of the scanner results in the spreadsheet to determine which SPDX license identifier(s) to be applied to the file. She confirmed any determination that was not immediately clear with lawyers working with the Linux Foundation. Criteria used to select files for SPDX license identifier tagging was: - Files considered eligible had to be source code files. - Make and config files were included as candidates if they contained >5 lines of source - File already had some variant of a license header in it (even if <5 lines). All documentation files were explicitly excluded. The following heuristics were used to determine which SPDX license identifiers to apply. - when both scanners couldn't find any license traces, file was considered to have no license information in it, and the top level COPYING file license applied. For non */uapi/* files that summary was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 11139 and resulted in the first patch in this series. If that file was a */uapi/* path one, it was "GPL-2.0 WITH Linux-syscall-note" otherwise it was "GPL-2.0". Results of that was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 WITH Linux-syscall-note 930 and resulted in the second patch in this series. - if a file had some form of licensing information in it, and was one of the */uapi/* ones, it was denoted with the Linux-syscall-note if any GPL family license was found in the file or had no licensing in it (per prior point). Results summary: SPDX license identifier # files ---------------------------------------------------|------ GPL-2.0 WITH Linux-syscall-note 270 GPL-2.0+ WITH Linux-syscall-note 169 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) 21 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) 17 LGPL-2.1+ WITH Linux-syscall-note 15 GPL-1.0+ WITH Linux-syscall-note 14 ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause) 5 LGPL-2.0+ WITH Linux-syscall-note 4 LGPL-2.1 WITH Linux-syscall-note 3 ((GPL-2.0 WITH Linux-syscall-note) OR MIT) 3 ((GPL-2.0 WITH Linux-syscall-note) AND MIT) 1 and that resulted in the third patch in this series. - when the two scanners agreed on the detected license(s), that became the concluded license(s). - when there was disagreement between the two scanners (one detected a license but the other didn't, or they both detected different licenses) a manual inspection of the file occurred. - In most cases a manual inspection of the information in the file resulted in a clear resolution of the license that should apply (and which scanner probably needed to revisit its heuristics). - When it was not immediately clear, the license identifier was confirmed with lawyers working with the Linux Foundation. - If there was any question as to the appropriate license identifier, the file was flagged for further research and to be revisited later in time. In total, over 70 hours of logged manual review was done on the spreadsheet to determine the SPDX license identifiers to apply to the source files by Kate, Philippe, Thomas and, in some cases, confirmation by lawyers working with the Linux Foundation. Kate also obtained a third independent scan of the 4.13 code base from FOSSology, and compared selected files where the other two scanners disagreed against that SPDX file, to see if there was new insights. The Windriver scanner is based on an older version of FOSSology in part, so they are related. Thomas did random spot checks in about 500 files from the spreadsheets for the uapi headers and agreed with SPDX license identifier in the files he inspected. For the non-uapi files Thomas did random spot checks in about 15000 files. In initial set of patches against 4.14-rc6, 3 files were found to have copy/paste license identifier errors, and have been fixed to reflect the correct identifier. Additionally Philippe spent 10 hours this week doing a detailed manual inspection and review of the 12,461 patched files from the initial patch version early this week with: - a full scancode scan run, collecting the matched texts, detected license ids and scores - reviewing anything where there was a license detected (about 500+ files) to ensure that the applied SPDX license was correct - reviewing anything where there was no detection but the patch license was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied SPDX license was correct This produced a worksheet with 20 files needing minor correction. This worksheet was then exported into 3 different .csv files for the different types of files to be modified. These .csv files were then reviewed by Greg. Thomas wrote a script to parse the csv files and add the proper SPDX tag to the file, in the format that the file expected. This script was further refined by Greg based on the output to detect more types of files automatically and to distinguish between header and source .c files (which need different comment types.) Finally Greg ran the script using the .csv files to generate the patches. Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>	2017-11-02 11:10:55 +01:00
Runmin Wang	68f515d91b	Merge remote-tracking branch 'remotes/origin/tmp-8a5776a' into msm-next ... * remotes/origin/tmp-8a5776a: Linux 4.14-rc4 ARC: [plat-hsdk]: Add reset controller node to manage ethernet reset arm64: Ensure fpsimd support is ready before userspace is active arm64: Ensure the instruction emulation is ready for userspace powerpc/powernv: Increase memory block size to 1GB on radix dm raid: fix incorrect status output at the end of a "recover" process KVM: add X86_LOCAL_APIC dependency ovl: fix regression caused by exclusive upper/work dir protection ovl: fix missing unlock_rename() in ovl_do_copy_up() ovl: fix dentry leak in ovl_indexdir_cleanup() ovl: fix dput() of ERR_PTR in ovl_cleanup_index() ovl: fix error value printed in ovl_lookup_index() ovl: fix may_write_real() for overlayfs directories x86/kvm: Move kvm_fastop_exception to .fixup section i2c: i2c-stm32f7: make structure stm32f7_setup static const i2c: ensure termination of *_device_id tables i2c: i801: Add support for Intel Cedar Fork i2c: stm32f7: fix setup structure net: 8021q: skip packets if the vlan is down Update James Hogan's email address drm/i915/glk: Fix DMC/DC state idleness calculation drm/i915/cnl: Reprogram DMC firmware after S3/S4 resume i40iw: Fix port number for query QP i40iw: Add missing memory barriers RDMA/qedr: Parse vlan priority as sl RDMA/qedr: Parse VLAN ID correctly and ignore the value of zero IB/mlx5: Fix label order in error path handling arm64: Use larger stacks when KASAN is selected ACPI/IORT: Fix PCI ACS enablement kvm/x86: Avoid async PF preempting the kernel incorrectly clk: samsung: exynos4: Enable VPLL and EPLL clocks for suspend/resume cycle dm crypt: reject sector_size feature if device length is not aligned to it Btrfs: fix overlap of fs_info::flags values bsg-lib: fix use-after-free under memory-pressure btrfs: avoid overflow when sector_t is 32 bit ARM: dts: stm32: use right pinctrl compatible for stm32f469 powerpc/mm: Call flush_tlb_kernel_range with interrupts enabled powerpc/xive: Clear XIVE internal structures when a CPU is removed powerpc/xive: Fix IPI reset nvme-pci: Use PCI bus address for data/queues in CMB ARM: dts: stm32: Fix STMPE1600 binding on stm32429i-eval board watchdog/core: Put softlockup_threads_initialized under ifdef guard watchdog/core: Rename some softlockup_* functions powerpc/watchdog: Make use of watchdog_nmi_probe() watchdog/core, powerpc: Lock cpus across reconfiguration watchdog/core, powerpc: Replace watchdog_nmi_reconfigure() mmc: sdhci-xenon: Fix clock resource by adding an optional bus clock mmc: meson-gx: include tx phase in the tuning process mmc: meson-gx: fix rx phase reset mmc: meson-gx: make sure the clock is rounded down mmc: Delete bounce buffer handling lsm: fix smack_inode_removexattr and xattr_getsecurity memleak xfs: handle racy AIO in xfs_reflink_end_cow xfs: always swap the cow forks when swapping extents ARC: [plat-hsdk]: Temporary fix to set CPU frequency to 1GHz ARC: fix allnoconfig build warning ARCv2: boot log: identify HS48 cores (dual issue) ARC: boot log: decontaminate ARCv2 ISA_CONFIG register arc: remove redundant UTS_MACHINE define in arch/arc/Makefile ARC: [plat-eznps] Update platform maintainer as Noam left ARC: [plat-hsdk] use actual clk driver to manage cpu clk ARC: [*defconfig] Reenable soft lock-up detector ARC: [plat-axs10x] sdio: Temporary fix of sdio ciu frequency ARC: [plat-hsdk] sdio: Temporary fix of sdio ciu frequency ARC: [plat-axs103] Add temporary quirk to reset ethernet IP ARM: defconfig: update Gemini defconfig ARM: defconfig: FRAMEBUFFER_CONSOLE can no longer be =m include/linux/fs.h: fix comment about struct address_space checkpatch: fix ignoring cover-letter logic m32r: fix build failure lib/ratelimit.c: use deferred printk() version kernel/params.c: improve STANDARD_PARAM_DEF readability kernel/params.c: fix an overflow in param_attr_show kernel/params.c: fix the maximum length in param_get_string mm/memory_hotplug: define find_{smallest|biggest}_section_pfn as unsigned long mm/memory_hotplug: change pfn_to_section_nr/section_nr_to_pfn macro to inline function kernel/kcmp.c: drop branch leftover typo memremap: add scheduling point to devm_memremap_pages mm, page_alloc: add scheduling point to memmap_init_zone mm, memory_hotplug: add scheduling point to __add_pages lib/idr.c: fix comment for idr_replace() mm: memcontrol: use vmalloc fallback for large kmem memcg arrays kernel/sysctl.c: remove duplicate UINT_MAX check on do_proc_douintvec_conv() include/linux/bitfield.h: remove 32bit from FIELD_GET comment block lib/lz4: make arrays static const, reduces object code size exec: binfmt_misc: kill the onstack iname[BINPRM_BUF_SIZE] array exec: binfmt_misc: fix race between load_misc_binary() and kill_node() exec: binfmt_misc: remove the confusing e->interp_file != NULL checks exec: binfmt_misc: shift filp_close(interp_file) from kill_node() to bm_evict_inode() exec: binfmt_misc: don't nullify Node->dentry in kill_node() exec: load_script: kill the onstack interp[BINPRM_BUF_SIZE] array userfaultfd: non-cooperative: fix fork use after free mm/device-public-memory: fix edge case in _vm_normal_page() mm: fix data corruption caused by lazyfree page mm: avoid marking swap cached page as lazyfree mm: have filemap_check_and_advance_wb_err clear AS_EIO/AS_ENOSPC m32r: define CPU_BIG_ENDIAN zram: fix null dereference of handle mm: fix RODATA_TEST failure "rodata_test: test data was not read only" rapidio: remove global irq spinlocks from the subsystem mm: meminit: mark init_reserved_page as __meminit z3fold: fix stale list handling mm,compaction: serialize waitqueue_active() checks (for real) android: binder: drop lru lock in isolate callback mm/memcg: avoid page count check for zone device mm, memcg: remove hotplug locking from try_charge mm, oom_reaper: skip mm structs with mmu notifiers z3fold: fix potential race in z3fold_reclaim_page sh: sh7269: remove nonexistent GPIO_PH[0-7] to fix pinctrl registration sh: sh7264: remove nonexistent GPIO_PH[0-7] to fix pinctrl registration sh: sh7757: remove nonexistent GPIO_PT[JLNQ]7_RESV to fix pinctrl registration sh: sh7722: remove nonexistent GPIO_PTQ7 to fix pinctrl registration mm, hugetlb, soft_offline: save compound page order before page migration ksm: fix unlocked iteration over vmas in cmp_and_merge_page() include/linux/mm.h: fix typo in VM_MPX definition scripts/spelling.txt: add more spelling mistakes to spelling.txt kernel/params.c: align add_sysfs_param documentation with code alpha: fix build failures bpf: fix bpf_tail_call() x64 JIT net: stmmac: dwmac-rk: Add RK3128 GMAC support blk-mq-debugfs: fix device sched directory for default scheduler null_blk: change configfs dependency to select blk-throttle: fix possible io stall when upgrade to max rndis_host: support Novatel Verizon USB730L drm/i915: Fix DDI PHY init if it was already on ide: fix IRQ assignment for PCI bus order probing ide: pci: free PCI BARs on initialization failure ide: free hwif->portdev on hwif_init() failure MAINTAINERS: update list for NBD net: rtnetlink: fix info leak in RTM_GETSTATS call KVM: PPC: Book3S: Fix server always zero from kvmppc_xive_get_xive() rcu: Remove extraneous READ_ONCE()s from rcu_irq_{enter,exit}() ftrace: Fix kmemleak in unregister_ftrace_graph powerpc/4xx: Fix compile error with 64K pages on 40x, 44x powerpc: Fix action argument for cpufeatures-based TLB flush scsi: ibmvscsis: Fix write_pending failure path scsi: libiscsi: Remove iscsi_destroy_session scsi: libiscsi: Fix use-after-free race during iscsi_session_teardown scsi: sd: Do not override max_sectors_kb sysfs setting scsi: sd: Implement blacklist option for WRITE SAME w/ UNMAP socket, bpf: fix possible use after free nbd: fix -ERESTARTSYS handling drm/sun4i: hdmi: Disable clks in bind function error path and unbind function ahci: don't ignore result code of ahci_reset_controller() mlxsw: spectrum_router: Track RIF of IPIP next hops mlxsw: spectrum_router: Move VRF refcounting ALSA: usx2y: Suppress kernel warning at page allocation failures ceph: fix __choose_mds() for LSSNAP request ceph: properly queue cap snap for newly created snap realm arm64: fix misleading data abort decoding Revert "ALSA: echoaudio: purge contradictions between dimension matrix members and total number of members" Revert "HID: multitouch: Support ALPS PTP stick with pid 0x120A" HID: hidraw: fix power sequence when closing device HID: wacom: Always increment hdev refcount within wacom_get_hdev_data mmc: core: add driver strength selection when selecting hs400es net: hns3: Fix an error handling path in 'hclge_rss_init_hw()' net: mvpp2: Fix clock resource by adding an optional bus clock r8152: add Linksys USB3GIGV1 id l2tp: fix l2tp_eth module loading ip_gre: erspan device should keep dst ip_gre: set tunnel hlen properly in erspan_tunnel_init ip_gre: check packet length and mtu correctly in erspan_xmit ip_gre: get key from session_id correctly in erspan_rcv Linux 4.14-rc3 hwmon: (xgene) Fix up error handling path mixup in 'xgene_hwmon_probe()' nvme: fix visibility of "uuid" ns attribute tipc: use only positive error codes in messages ppp: fix __percpu annotation udp: perform source validation for mcast early demux IPv4: early demux can return an error code ip6_tunnel: update mtu properly for ARPHRD_ETHER tunnel device in tx path ip6_gre: ip6gre_tap device should keep dst ip_gre: ipgre_tap device should keep dst netlink: do not proceed if dump's start() errs clk: Export clk_bulk_prepare() fix infoleak in waitid(2) x86/asm: Use register variable to get stack pointer value x86/mm: Disable branch profiling in mem_encrypt.c arm64: fault: Route pte translation faults via do_translation_fault arm64: mm: Use READ_ONCE when dereferencing pointer to pte table RDMA/iwpm: Properly mark end of NL messages kvm/x86: Handle async PF in RCU read-side critical sections KVM: nVMX: Fix nested #PF intends to break L1's vmlauch/vmresume sched/sysctl: Check user input value of sysctl_sched_time_avg x86/asm: Fix inline asm call constraints for GCC 4.4 sched/debug: Add explicit TASK_PARKED printing sched/debug: Ignore TASK_IDLE for SysRq-W sched/debug: Add explicit TASK_IDLE printing sched/tracing: Use common task-state helpers locking/rwsem-xadd: Fix missed wakeup due to reordering of load sched/tracing: Fix trace_sched_switch task-state printing sched/debug: Remove unused variable sched/debug: Convert TASK_state to hex sched/debug: Implement consistent task-state printing um/time: Fixup namespace collision perf/aux: Only update ->aux_wakeup in non-overwrite mode cxl: Fix memory page not handled powerpc: Fix workaround for spurious MCE on POWER9 PM / s2idle: Invoke the ->wake() platform callback earlier Revert "Bluetooth: Add option for disabling legacy ioctl interfaces" net: Set sk_prot_creator when cloning sockets to the right proto net: dsa: mv88e6xxx: lock mutex when freeing IRQs packet: only test po->has_vnet_hdr once in packet_snd packet: in packet_do_bind, test fanout with bind_lock held net: stmmac: dwmac4: Re-enable MAC Rx before powering down net: stmmac: dwc-qos: Add suspend / resume support net: dsa: Fix network device registration order net: dsa: mv88e6xxx: Allow dsa and cpu ports in multiple vlans inetpeer: fix RCU lookup() again net: mvpp2: do not select the internal source clock net: mvpp2: fix port list indexing net: mvpp2: fix parsing fragmentation detection dm crypt: fix memory leak in crypt_ctr_cipher_old() perf test: Fix vmlinux failure on s390x part 2 perf test: Fix vmlinux failure on s390x KVM: VMX: use cmpxchg64 tun: bail out from tun_get_user() if the skb is empty percpu: fix iteration to prevent skipping over block timer: Prepare to change timer callback argument type xen/mmu: Call xen_cleanhighmap() with 4MB aligned for page tables mapping xen-pciback: relax BAR sizing write value check watchdog/hardlockup/perf: Fix spelling mistake: "permanetely" -> "permanently" irq/generic-chip: Don't replace domain's name usb: dwc3: of-simple: Add compatible for Spreadtrum SC9860 platform usb: gadget: udc: atmel: set vbus irqflags explicitly usb: gadget: ffs: handle I/O completion in-order usb: renesas_usbhs: fix usbhsf_fifo_clear() for RX direction usb: renesas_usbhs: fix the BCLR setting condition for non-DCP pipe usb: gadget: udc: renesas_usb3: Fix return value of usb3_write_pipe() usb: gadget: udc: renesas_usb3: fix Pn_RAMMAP.Pn_MPKT value usb: gadget: udc: renesas_usb3: fix for no-data control transfer USB: dummy-hcd: Fix erroneous synchronization change USB: dummy-hcd: fix infinite-loop resubmission bug USB: dummy-hcd: fix connection failures (wrong speed) seccomp: fix the usage of get/put_seccomp_filter() in seccomp_get_filter() objtool: Support unoptimized frame pointer setup objtool: Skip unreachable warnings for GCC 4.4 and older net/mlx5: Fix wrong indentation in enable SRIOV code net/mlx5: Fix static checker warning on steering tracepoints code net/mlx5e: Fix calculated checksum offloads counters net/mlx5e: Don't add/remove 802.1ad rules when changing 802.1Q VLAN filter net/mlx5e: Print netdev features correctly in error message net/mlx5e: Check encap entry state when offloading tunneled flows net/mlx5e: Disallow TC offloading of unsupported match/action combinations net/mlx5e: Fix erroneous freeing of encap header buffer net/mlx5: Check device capability for maximum flow counters net/mlx5: Fix FPGA capability location net/mlx5e: IPoIB, Fix access to invalid memory address md/raid5: cap worker count dm-raid: fix a race condition in request handling md: fix a race condition for flush request handling md: separate request handling scsi: ILLEGAL REQUEST + ASC==27 => target failure scsi: aacraid: Add a small delay after IOP reset cpufreq: docs: Drop intel-pstate.txt from index.txt percpu: fix starting offset for chunk statistics traversal ACPI / APEI: clear error status before acknowledging the error bcache: use llist_for_each_entry_safe() in __closure_wake_up() mtd: nand: atmel: fix buffer overflow in atmel_pmecc_user IB/hfi1: Unsuccessful PCIe caps tuning should not fail driver load IB/hfi1: On error, fix use after free during user context setup Revert "IB/ipoib: Update broadcast object if PKey value was changed in index 0" IB/hfi1: Return correct value in general interrupt handler IB/hfi1: Check eeprom config partition validity IB/hfi1: Only reset QSFP after link up and turn off AOC TX IB/hfi1: Turn off AOC TX after offline substates iommu: Fix comment for iommu_ops.map_sg iommu/amd: pr_err() strings should end with newlines iommu/mediatek: Limit the physical address in 32bit for v7s iommu/io-pgtable-arm-v7s: Need dma-sync while there is no QUIRK_NO_DMA mtd: Fix partition alignment check on multi-erasesize devices KVM: VMX: simplify and fix vmx_vcpu_pi_load KVM: VMX: avoid double list add with VT-d posted interrupts KVM: VMX: extract __pi_post_block arm64: Make sure SPsel is always set quota: Fix quota corruption with generic/232 test platform/x86: fujitsu-laptop: Don't oops when FUJ02E3 is not presnt sctp: Fix a big endian bug in sctp_diag_dump() vfs: Return -ENXIO for negative SEEK_HOLE / SEEK_DATA offsets atlantic: fix iommu errors aquantia: Fix transient invalid link down/up indications aquantia: Fix Tx queue hangups aquantia: Setup max_mtu in ndev to enable jumbo frames xfs: revert "xfs: factor rmap btree size into the indlen calculations" xfs: Capture state of the right inode in xfs_iflush_done xfs: perag initialization should only touch m_ag_max_usable for AG 0 xfs: update i_size after unwritten conversion in dio completion iomap_dio_rw: Allocate AIO completion queue before submitting dio xfs: validate bdev support for DAX inode flag l2tp: fix race condition in l2tp_tunnel_delete vti: fix use after free in vti_tunnel_xmit/vti6_tnl_xmit drm/i915/bios: ignore HDMI on port A drm/i915: remove redundant variable hw_check drm/i915: always update ELD connector type after get modes percpu: make this_cpu_generic_read() atomic w.r.t. interrupts arm64: dts: rockchip: add the grf clk for dw-mipi-dsi on rk3399 btrfs: log csums for all modified extents Btrfs: fix unexpected result when dio reading corrupted blocks btrfs: Report error on removing qgroup if del_qgroup_item fails Btrfs: skip checksum when reading compressed data if some IO have failed Btrfs: fix kernel oops while reading compressed data Btrfs: use btrfs_op instead of bio_op in __btrfs_map_block Btrfs: do not backup tree roots when fsync btrfs: remove BTRFS_FS_QUOTA_DISABLING flag btrfs: propagate error to btrfs_cmp_data_prepare caller btrfs: prevent to set invalid default subvolid Btrfs: send: fix error number for unknown inode types btrfs: fix NULL pointer dereference from free_reloc_roots() btrfs: finish ordered extent cleaning if no progress is found btrfs: clear ordered flag on cleaning up ordered extents Btrfs: fix incorrect {node,sector}size endianness from BTRFS_IOC_FS_INFO Btrfs: do not reset bio->bi_ops while writing bio Btrfs: use the new helper wbc_to_write_flags powerpc: Handle MCE on POWER9 with only DSISR bit 30 set drm/tegra: trace: Fix path to include x86/fpu: Use using_compacted_format() instead of open coded X86_FEATURE_XSAVES x86/fpu: Use validate_xstate_header() to validate the xstate_header in copy_user_to_xstate() x86/fpu: Eliminate the 'xfeatures' local variable in copy_user_to_xstate() x86/fpu: Copy the full header in copy_user_to_xstate() x86/fpu: Use validate_xstate_header() to validate the xstate_header in copy_kernel_to_xstate() x86/fpu: Eliminate the 'xfeatures' local variable in copy_kernel_to_xstate() x86/fpu: Copy the full state_header in copy_kernel_to_xstate() x86/fpu: Use validate_xstate_header() to validate the xstate_header in __fpu__restore_sig() x86/fpu: Use validate_xstate_header() to validate the xstate_header in xstateregs_set() x86/fpu: Introduce validate_xstate_header() x86/fpu: Rename fpu__activate_fpstate_read/write() to fpu__prepare_[read|write]() x86/fpu: Rename fpu__activate_curr() to fpu__initialize() x86/fpu: Simplify and speed up fpu__copy() x86/fpu: Fix stale comments about lazy FPU logic x86/fpu: Rename fpu::fpstate_active to fpu::initialized x86/fpu: Remove fpu__current_fpstate_write_begin/end() x86/fpu: Fix fpu__activate_fpstate_read() and update comments netlink: fix nla_put_{u8,u16,u32} for KASAN rocker: fix rocker_tlv_put_* functions for KASAN scsi: scsi_transport_fc: Also check for NOTPRESENT in fc_remote_port_add() xfs: remove redundant re-initialization of total_nr_pages xfs: Output warning message when discard option was enabled even though the device does not support discard xfs: report zeroed or not correctly in xfs_zero_range() xfs: kill meaningless variable 'zero' fs/xfs: Use %pS printk format for direct addresses xfs: evict CoW fork extents when performing finsert/fcollapse xfs: don't unconditionally clear the reflink flag on zero-block files fix a typo in put_compat_shm_info() PCI: Fix race condition with driver_override net: qcom/emac: specify the correct size when mapping a DMA buffer cpufreq: dt: Fix sysfs duplicate filename creation for platform-device scsi: scsi_transport_fc: set scsi_target_id upon rescan PM / OPP: Call notifier without holding opp_table->lock security/keys: rewrite all of big_key crypto security/keys: properly zero out sensitive key material in big_key l2tp: fix race between l2tp_session_delete() and l2tp_tunnel_closeall() l2tp: ensure sessions are freed after their PPPOL2TP socket smp/hotplug: Hotplug state fail injection smp/hotplug: Differentiate the AP completion between up and down smp/hotplug: Differentiate the AP-work lockdep class between up and down smp/hotplug: Callback vs state-machine consistency smp/hotplug: Rewrite AP state machine core smp/hotplug: Allow external multi-instance rollback smp/hotplug: Add state diagram MAINTAINERS: Add entry for MediaTek PMIC LED driver scsi: scsi_transport_iscsi: fix the issue that iscsi_if_rx doesn't parse nlmsg properly irqdomain: Add __rcu annotations to radix tree accessors irqchip/mips-gic: Use effective affinity to unmask irqchip/mips-gic: Fix shifts to extract register fields nvme-fcloop: fix port deletes and callbacks nvmet-fc: sync header templates with comments nvmet-fc: ensure target queue id within range. nvmet-fc: on port remove call put outside lock nvme-rdma: don't fully stop the controller in error recovery nvme-rdma: give up reconnect if state change fails nvme-core: Use nvme_wq to queue async events and fw activation nvme: fix sqhd reference when admin queue connect fails watchdog/hardlockup/perf: Cure UP damage gfs2: Fix debugfs glocks dump selftests: timers: set-timer-lat: Fix hang when testing unsupported alarms selftests: timers: set-timer-lat: fix hang when std out/err are redirected selftests/memfd: correct run_tests.sh permission selftests/seccomp: Support glibc 2.26 siginfo_t.h selftests: futex: Makefile: fix for loops in targets to run silently selftests: Makefile: fix for loops in targets to run silently selftests: mqueue: Use full path to run tests from Makefile selftests: futex: copy sub-dir test scripts for make O=dir run PCI: Add dummy pci_acs_enabled() for CONFIG_PCI=n build IB/mlx5: Fix NULL deference on mlx5_ib_update_xlt failure IB/mlx5: Simplify mlx5_ib_cont_pages IB/ipoib: Fix inconsistency with free_netdev and free_rdma_netdev IB/ipoib: Fix sysfs Pkey create<->remove possible deadlock IB: Correct MR length field to be 64-bit IB/core: Fix qp_sec use after free access IB/core: Fix typo in the name of the tag-matching cap struct perf tools: Fix syscalltbl build failure perf report: Fix debug messages with --call-graph option dm ioctl: fix alignment of event number in the device list block: fix a crash caused by wrong API fs: Fix page cache inconsistency when mixing buffered and AIO DIO nvmet: implement valid sqhd values in completions nvme-fabrics: Allow 0 as KATO value nvme: allow timed-out ios to retry nvme: stop aer posting if controller state not live nvme-pci: Print invalid SGL only once nvme-pci: initialize queue memory before interrupts nvmet-fc: fix failing max io queue connections nvme-fc: use transport-specific sgl format nvme: add transport SGL definitions nvme.h: remove FC transport-specific error values qla2xxx: remove use of FC-specific error codes lpfc: remove use of FC-specific error codes nvmet-fcloop: remove use of FC-specific error codes nvmet-fc: remove use of FC-specific error codes nvme-fc: remove use of FC-specific error codes loop: remove union of use_aio and ref in struct loop_cmd blktrace: Fix potential deadlock between delete & sysfs ops nbd: ignore non-nbd ioctl's bsg-lib: don't free job in bsg_prepare_job brd: fix overflow in __brd_direct_access genirq: Check __free_irq() return value for NULL futex: Fix pi_state->owner serialization KEYS: use kmemdup() in request_key_auth_new() KEYS: restrict /proc/keys by credentials at open time KEYS: reset parent each time before searching key_user_tree KEYS: prevent KEYCTL_READ on negative key KEYS: prevent creating a different user's keyrings KEYS: fix writing past end of user-supplied buffer in keyring_read() KEYS: fix key refcount leak in keyctl_read_key() KEYS: fix key refcount leak in keyctl_assume_authority() KEYS: don't revoke uninstantiated key in request_key_auth_new() KEYS: fix cred refcount leak in request_key_auth_new() perf evsel: Fix attr.exclude_kernel setting for default cycles:p tools include: Sync kernel ABI headers with tooling headers perf tools: Get all of tools/{arch,include}/ in the MANIFEST arch: change default endian for microblaze microblaze: Cocci spatch "vma_pages" microblaze: Add missing kvm_para.h to Kbuild perf/x86/intel/uncore: Correct num_boxes for IIO and IRP USB: cdc-wdm: ignore -EPIPE from GetEncapsulatedResponse USB: devio: Don't corrupt user memory USB: devio: Prevent integer overflow in proc_do_submiturb() perf/x86/intel/rapl: Add missing CPU IDs perf/x86/msr: Add missing CPU IDs perf/x86/intel/cstate: Add missing CPU IDs x86: Don't cast away the __user in __get_user_asm_u64() x86/sysfs: Fix off-by-one error in loop termination x86/mm: Fix fault error path using unsafe vma pointer x86/numachip: Add const and __initconst to numachip2_clockevent x86/fpu: Reinitialize FPU registers if restoring FPU state fails x86/fpu: Don't let userspace set bogus xcomp_bv qxl: fix framebuffer unpinning Linux 4.14-rc2 staging: iio: ad7192: Fix - use the dedicated reset function avoiding dma from stack. iio: core: Return error for failed read_reg iio: ad7793: Fix the serial interface reset iio: ad_sigma_delta: Implement a dedicated reset function IIO: BME280: Updates to Humidity readings need ctrl_reg write! iio: adc: mcp320x: Fix readout of negative voltages iio: adc: mcp320x: Fix oops on module unload iio: adc: stm32: fix bad error check on max_channels iio: trigger: stm32-timer: fix a corner case to write preset iio: trigger: stm32-timer: preset shouldn't be buffered iio: adc: twl4030: Return an error if we can not enable the vusb3v1 regulator in 'twl4030_madc_probe()' iio: adc: twl4030: Disable the vusb3v1 rugulator in the error handling path of 'twl4030_madc_probe()' iio: adc: twl4030: Fix an error handling path in 'twl4030_madc_probe()' x86/fpu: Turn WARN_ON() in context switch into WARN_ON_FPU() x86/fpu: Fix boolreturn.cocci warnings x86/fpu: Add FPU state copying quirk to handle XRSTOR failure on Intel Skylake CPUs x86/fpu: Remove struct fpu::fpregs_active x86/fpu: Decouple fpregs_activate()/fpregs_deactivate() from fpu->fpregs_active x86/fpu: Change fpu->fpregs_active users to fpu->fpstate_active x86/fpu: Split the state handling in fpu__drop() x86/fpu: Make the fpu state change in fpu__clear() scheduler-atomic x86/fpu: Simplify fpu->fpregs_active use x86/fpu: Flip the parameter order in copy_*_to_xstate() x86/fpu: Remove 'kbuf' parameter from the copy_user_to_xstate() API x86/fpu: Remove 'ubuf' parameter from the copy_kernel_to_xstate() API x86/fpu: Split copy_user_to_xstate() into copy_kernel_to_xstate() & copy_user_to_xstate() x86/fpu: Simplify __copy_xstate_to_kernel() return values x86/fpu: Change 'size_total' parameter to unsigned and standardize the size checks in copy_xstate_to_*() x86/fpu: Clarify parameter names in the copy_xstate_to_*() methods x86/fpu: Remove the 'start_pos' parameter from the __copy_xstate_to_*() functions x86/fpu: Clean up the parameter definitions of copy_xstate_to_*() x86/fpu: Clean up parameter order in the copy_xstate_to_*() APIs x86/fpu: Remove 'kbuf' parameter from the copy_xstate_to_user() APIs x86/fpu: Remove 'ubuf' parameter from the copy_xstate_to_kernel() APIs x86/fpu: Split copy_xstate_to_user() into copy_xstate_to_kernel() & copy_xstate_to_user() x86/fpu: Rename copyin_to_xsaves()/copyout_from_xsaves() to copy_user_to_xstate()/copy_xstate_to_user() tpm: ibmvtpm: simplify crq initialization and document crq format tpm: replace msleep() with usleep_range() in TPM 1.2/2.0 generic drivers Documentation: tpm: add powered-while-suspended binding documentation tpm: tpm_crb: constify acpi_device_id. tpm: vtpm: constify vio_device_id security: fix description of values returned by cap_inode_need_killpriv net: qualcomm: rmnet: Fix rcu splat in rmnet_is_real_dev_registered cnic: Fix an error handling path in 'cnic_alloc_bnx2x_resc()' tracing: Remove RCU work arounds from stack tracer extable: Enable RCU if it is not watching in kernel_text_address() extable: Consolidate *kernel_text_address() functions rcu: Allow for page faults in NMI handlers as3645a: Unregister indicator LED on device unbind as3645a: Use integer numbers for parsing LEDs dt: bindings: as3645a: Use LED number to refer to LEDs as3645a: Use ams,input-max-microamp as documented in DT bindings x86/asm: Fix inline asm call constraints for Clang objtool: Handle another GCC stack pointer adjustment bug inet: fix improper empty comparison net: use inet6_rcv_saddr to compare sockets net: set tb->fast_sk_family net: orphan frags on stand-alone ptype in dev_queue_xmit_nit MAINTAINERS: update git tree locations for ieee802154 subsystem SMB3: Don't ignore O_SYNC/O_DSYNC and O_DIRECT flags SMB3: handle new statx fields arch: remove unused *_segments() macros/functions parisc: Unbreak bootloader due to gcc-7 optimizations parisc: Reintroduce option to gzip-compress the kernel apparmor: fix apparmorfs DAC access permissions apparmor: fix build failure on sparc caused by undeclared signals apparmor: fix incorrect type assignment when freeing proxies apparmor: ensure unconfined profiles have dfas initialized apparmor: fix race condition in null profile creation apparmor: move new_null_profile to after profile lookup fns() apparmor: add base infastructure for socket mediation apparmor: add more debug asserts to apparmorfs apparmor: make policy_unpack able to audit different info messages apparmor: add support for absolute root view based labels apparmor: cleanup conditional check for label in label_print apparmor: add mount mediation apparmor: add the ability to mediate signals apparmor: Redundant condition: prev_ns. in [label.c:1498] apparmor: Fix an error code in aafs_create() apparmor: Fix logical error in verify_header() apparmor: Fix shadowed local variable in unpack_trans_table() bnxt_re: Don't issue cmd to delete GID for QP1 GID entry before the QP is destroyed bnxt_re: Fix memory leak in FRMR path bnxt_re: Remove RTNL lock dependency in bnxt_re_query_port bnxt_re: Fix race between the netdev register and unregister events bnxt_re: Free up devices in module_exit path bnxt_re: Fix compare and swap atomic operands bnxt_re: Stop issuing further cmds to FW once a cmd times out bnxt_re: Fix update of qplib_qp.mtu when modified parisc: Add HWPOISON page fault handler code parisc: Move init_per_cpu() into init section parisc: Check if initrd was loaded into broken RAM parisc: Add PDCE_CHECK instruction to HPMC handler parisc: Add wrapper for pdc_instr() firmware function parisc: Move start_parisc() into init section parisc: Stop unwinding at start of stack parisc: Fix too large frame size warnings i40iw: Add support for port reuse on active side connections i40iw: Add missing VLAN priority i40iw: Call i40iw_cm_disconn on modify QP to disconnect i40iw: Prevent multiple netdev event notifier registrations i40iw: Fail open if there are no available MSI-X vectors RDMA/vmw_pvrdma: Fix reporting correct opcodes for completion IB/bnxt_re: Fix frame stack compilation warning IB/mlx5: fix debugfs cleanup IB/ocrdma: fix incorrect fall-through on switch statement IB/ipoib: Suppress the retry related completion errors Input: elan_i2c - extend Flash-Write delay iw_cxgb4: remove the stid on listen create failure iw_cxgb4: drop listen destroy replies if no ep found iw_cxgb4: put ep reference in pass_accept_req() USB: g_mass_storage: Fix deadlock when driver is unbound USB: gadgetfs: Fix crash caused by inadequate synchronization USB: gadgetfs: fix copy_to_user while holding spinlock USB: uas: fix bug in handling of alternate settings IB/core: Fix for core panic cgroup: Reinit cgroup_taskset structure before cgroup_migrate_execute() returns ALSA: usb-audio: Check out-of-bounds access by corrupted buffer descriptor drivers/perf: arm_pmu_acpi: Release memory obtained by kasprintf iommu/of: Remove PCI host bridge node check ALSA: pcm: Fix structure definition for X32 ABI mmc: sdhci-pci: Fix voltage switch for some Intel host controllers staging: rtl8723bs: avoid null pointer dereference on pmlmepriv staging: rtl8723bs: add missing range check on id mmc: tmio: remove broken and noisy debug macro KVM: PPC: Book3S HV: Check for updated HDSISR on P9 HDSI exception KVM: nVMX: fix HOST_CR3/HOST_CR4 cache Drivers: hv: fcopy: restore correct transfer length vmbus: don't acquire the mutex in vmbus_hvsock_device_unregister() intel_th: pci: Add Lewisburg PCH support intel_th: pci: Add Cedar Fork PCH support stm class: Fix a use-after-free usb-storage: unusual_devs entry to fix write-access regression for Seagate external drives usb-storage: fix bogus hardware error messages for ATA pass-thru devices drm/sun4i: cec: Enable back CEC-pin framework net: prevent dst uses after free net: phy: Fix truncation of large IRQ numbers in phy_attached_print() dt-bindings: clk: stm32h7: fix clock-cell size Input: uinput - avoid crash when sending FF request to device going away Input: uinput - avoid FF flush when destroying device net/smc: no close wait in case of process shut down net/smc: introduce a delay net/smc: terminate link group if out-of-sync is received net/smc: longer delay for client link group removal net/smc: adapt send request completion notification net/smc: adjust net_device refcount net/smc: take RCU read lock for routing cache lookup net/smc: add receive timeout check net/smc: add missing dev_put net: stmmac: Cocci spatch "of_table" lan78xx: Use default values loaded from EEPROM/OTP after reset lan78xx: Allow EEPROM write for less than MAX_EEPROM_SIZE lan78xx: Fix for eeprom read/write when device auto suspend net: phy: Keep reporting transceiver type net: ethtool: Add back transceiver type net: qcom/emac: add software control for pause frame mode hv_netvsc: fix send buffer failure on MTU change net_sched: remove cls_flower idr on failure net_sched/hfsc: fix curve activation in hfsc_change_class() net_sched: always reset qdisc backlog in qdisc_reset() x86/xen: clean up clang build warning USB: core: harden cdc_parse_cdc_header ath10k: mark PM functions as __maybe_unused MIPS: PCI: fix pcibios_map_irq section mismatch MIPS: Fix input modify in __write_64bit_c0_split() MIPS: MSP71xx: Include asm/setup.h selftests: lib.mk: copy test scripts and test files for make O=dir run selftests: sync: kselftest and kselftest-clean fail for make O=dir case selftests: sync: use TEST_CUSTOM_PROGS instead of TEST_PROGS selftests: lib.mk: add TEST_CUSTOM_PROGS to allow custom test run/install selftests: watchdog: fix to use TEST_GEN_PROGS and remove clean selftests: lib.mk: fix test executable status check to use full path selftests: Makefile: clear LDFLAGS for make O=dir use-case selftests: lib.mk: kselftest and kselftest-clean fail for make O=dir case Makefile: kselftest and kselftest-clean fail for make O=dir case reset: Restrict RESET_HSDK to ARC_SOC_HSDK or COMPILE_TEST Revert "genirq: Restrict effective affinity to interrupts actually using it" powerpc/pseries: Fix parent_dn reference leak in add_dt_node() powerpc/pseries: Fix "OF: ERROR: Bad of_node_put() on /cpus" during DLPAR powerpc/eeh: Create PHB PEs after EEH is initialized ipc/shm: Fix order of parameters when calling copy_compat_shmid_to_user iov_iter: fix page_copy_sane for compound pages SMB: Validate negotiate (to protect against downgrade) even if signing off cifs: release auth_key.response for reconnect. cifs: release cifs root_cred after exit_cifs CIFS: make arrays static const, reduces object code size net: hns3: Fix for pri to tc mapping in TM net: hns3: Fix for setting rss_size incorrectly net: hns3: Fix typo error for feild in hclge_tm net: hns3: Fix for rx priv buf allocation when DCB is not supported net: hns3: Fix for rx_priv_buf_alloc not setting rx shared buffer net: hns3: Fix for not setting rx private buffer size to zero net: hns3: Fix for DEFAULT_DV when dev doesn't support DCB net: hns3: Fix initialization when cmd is not supported net: hns3: Cleanup for ROCE capability flag in ae_dev isdn/i4l: fetch the ppp_write buffer in one shot net: fec: return IRQ_HANDLED if fec_ptp_check_pps_event handled it net: fec: remove unused interrupt FEC_ENET_TS_TIMER net: fec: only check queue 0 if RXF_0/TXF_0 interrupt is set net: change skb->mac_header when Generic XDP calls adjust_head net: compat: assert the size of cmsg copied in is as expected drm/amdkfd: Print event limit messages only once per process drm/amdkfd: Fix kernel-queue wrapping bugs drm/amdkfd: Fix incorrect destroy_mqd parameter [SMB3] Update session and share information displayed for debugging SMB2/SMB3 bpf: one perf event close won't free bpf program attached by another perf event packet: hold bind lock when rebinding to fanout hook ALSA: usb-audio: Add sample rate quirk for Plantronics C310/C520-M PCI: endpoint: Use correct "end of test" interrupt scripts/dtc: dtx_diff - 2nd update of include dts paths to match build kbuild: rpm-pkg: fix version number handling kbuild: deb-pkg: remove firmware package support kbuild: rpm-pkg: delete firmware_install to fix build error qtnfmac: cancel scans on wireless interface changes qtnfmac: lock access to h/w in tx path usb: gadget: dummy: fix nonsensical comparisons usb: gadget: udc: fix snps_udc_plat.c build errors usb: gadget: function: printer: avoid spinlock recursion usb: gadget: core: fix ->udc_set_speed() logic s390/topology: enable / disable topology dynamically s390/topology: alternative topology for topology-less machines powerpc/kprobes: Update optprobes to use emulate_update_regs() ALSA: hda - program ICT bits to support HBR audio crypto: af_alg - update correct dst SGL entry crypto: caam - fix LS1021A support on ARMv7 multiplatform kernel crypto: inside-secure - fix gcc-4.9 warnings crypto: talitos - Don't provide setkey for non hmac hashing algs. crypto: talitos - fix hashing crypto: talitos - fix sha224 crypto: x86/twofish - Fix RBP usage crypto: sha512-avx2 - Fix RBP usage crypto: x86/sha256-ssse3 - Fix RBP usage crypto: x86/sha256-avx2 - Fix RBP usage crypto: x86/sha256-avx - Fix RBP usage crypto: x86/sha1-ssse3 - Fix RBP usage crypto: x86/sha1-avx2 - Fix RBP usage crypto: x86/des3_ede - Fix RBP usage crypto: x86/cast6 - Fix RBP usage crypto: x86/cast5 - Fix RBP usage crypto: x86/camellia - Fix RBP usage crypto: x86/blowfish - Fix RBP usage crypto: drbg - fix freeing of resources MIPS: Fix perf event init ARM: dts: da850-evm: add serial and ethernet aliases cifs: show 'soft' in the mount options for hard mounts SMB3: Warn user if trying to sign connection that authenticated as guest SMB3: Fix endian warning brcmfmac: setup passive scan if requested by user-space brcmfmac: add length check in brcmf_cfg80211_escan_handler() powerpc/powernv: Clear LPCR[PECE1] via stop-api only for deep state offline powerpc/sstep: mullw should calculate a 64 bit signed result powerpc/sstep: Fix issues with mcrf powerpc/sstep: Fix issues with set_cr0() powerpc/tm: Flush TM only if CPU has TM feature powerpc/sysrq: Fix oops whem ppmu is not registered powerpc/configs: Update for CONFIG_SND changes drm/exynos/hdmi: Fix unsafe list iteration Fix SMB3.1.1 guest authentication to Samba ipv6: fix net.ipv6.conf.all interface DAD handlers net: ipv6: fix regression of no RTM_DELADDR sent after DAD failure bpf: fix ri->map_owner pointer on bpf_prog_realloc net: emac: Fix napi poll list corruption tcp: fastopen: fix on syn-data transmit failure net: hns3: Fixes the premature exit of loop when matching clients net: hns3: Fixes the default VLAN-id of PF net: hns3: Fixes the ether address copy with appropriate API net: hns3: Fixes the initialization of MAC address in hardware net: hns3: Fixes ring-to-vector map-and-unmap command net: hns3: Fixes the command used to unmap ring from vector net: hns3: Fixes initialization of phy address from firmware cpufreq: ti-cpufreq: Support additional am43xx platforms bpf: do not disable/enable BH in bpf_map_free_id() tracing: Fix trace_pipe behavior for instance traces rhashtable: Documentation tweak ACPI: properties: Return _DSD hierarchical extension (data) sub-nodes correctly ARM: cpuidle: Avoid memleak if init fail cpufreq: dt-platdev: Add some missing platforms to the blacklist PM: core: Fix device_pm_check_callbacks() PM: docs: Drop an excess character from devices.rst net: phy: Kconfig: Fix PHY infrastructure menu in menuconfig ACPI / bus: Make ACPI_HANDLE() work for non-GPL code again selftests/net: msg_zerocopy enable build with older kernel headers selftests: actually run the various net selftests selftest: add a reuseaddr test selftests: silence test output by default ALSA: asihpi: fix a potential double-fetch bug when copying puhm MIPS: PCI: Move map_irq() hooks out of initdata ceph: avoid panic in create_session_open_msg() if utsname() returns NULL irqchip.mips-gic: Fix shared interrupt mask writes irqchip/gic-v4: Fix building with ancient gcc irqchip/gic-v3: Iterate over possible CPUs by for_each_possible_cpu() libceph: don't allow bidirectional swap of pg-upmap-items ARM: dts: am43xx-epos-evm: Remove extra CPSW EMAC entry ARM: dts: am33xx: Add spi alias to match SOC schematics ARM: OMAP2+: hsmmc: fix logic to call either omap_hsmmc_init or omap_hsmmc_late_init but not both ARM: dts: dra7: Set a default parent to mcasp3_ahclkx_mux ARM: OMAP2+: dra7xx: Set OPT_CLKS_IN_RESET flag for gpio1 ARM: dts: nokia n900: drop unneeded/undocumented parts of the dts MAINTAINERS: Remove Yuval Mintz from maintainers list arm64: dts: rockchip: Correct MIPI DPHY PLL clock on rk3399 dt-bindings: fix vendor prefix for Abracon of: provide inline helper for of_find_device_by_node tracing: Ignore mmiotrace from kernel commandline tracing: Erase irqsoff trace with empty write USB: fix out-of-bounds in usb_set_configuration arm64: dt marvell: Fix AP806 system controller size MAINTAINERS: add Macchiatobin maintainers entry iommu/qcom: Depend on HAS_DMA to fix compile error xen, arm64: drop dummy lookup_address() KVM: VMX: remove WARN_ON_ONCE in kvm_vcpu_trigger_posted_interrupt KVM: VMX: do not change SN bit in vmx_update_pi_irte() KVM: x86: Fix the NULL pointer parameter in check_cr_write() drm: exynos: include linux/irq.h drm/exynos: Fix suspend/resume support drm/exynos: Fix locking in the suspend/resume paths iommu/vt-d: Fix harmless section mismatch warning iommu: Add missing dependencies driver core: remove DRIVER_ATTR fpga: altera-cvp: remove DRIVER_ATTR() usage Revert "KVM: Don't accept obviously wrong gsi values via KVM_IRQFD" s390/mm: fix write access check in gup_huge_pmd() s390/mm: make pmdp_invalidate() do invalidation only s390/cio: recover from bad paths s390/scm_blk: consistently use blk_status_t as error type net: systemport: Fix 64-bit statistics dependency 8139too: revisit napi_complete_done() usage fcntl: Don't set si_code to SI_SIGIO when sig == SIGPOLL ata_piix: Add Fujitsu-Siemens Lifebook S6120 to short cable IDs Documentation: core-api: minor workqueue.rst cleanups libnvdimm, namespace: fix btt claim class crash tcp: remove two unused functions tools/testing/nvdimm: disable labels for nfit_test.1 bpf: devmap: pass on return value of bpf_map_precharge_memlock bnxt_en: check for ingress qdisc in flower offload ACPI / watchdog: properly initialize resources Documentation: networking: fix ASCII art in switchdev.txt net/sched: cls_matchall: fix crash when used with classful qdisc ip6_tunnel: do not allow loading ip6_tunnel if ipv6 is disabled in cmdline net: phy: Fix mask value write on gmii2rgmii converter speed register drm/i915: Remove unused 'in_vbl' from i915_get_crtc_scanoutpos() drm/i915/cnp: set min brightness from VBT Revert "drm/i915/bxt: Disable device ready before shutdown command" drm/i915/bxt: set min brightness from VBT drm/i915: Fix an error handling in 'intel_framebuffer_init()' drm/i915/gvt: Fix incorrect PCI BARs reporting ip6_gre: skb_push ipv6hdr before packing the header in ip6gre_header nl80211: fix null-ptr dereference on invalid mesh configuration udpv6: Fix the checksum computation when HW checksum does not apply selftests/ftrace: multiple_kprobes: Also check for support selftests/bpf: Make bpf_util work on uniprocessor systems selftests/intel_pstate: No need to compile test progs in the run script selftests: intel_pstate: build only on x86 selftests: breakpoints: re-order TEST_GEN_PROGS targets tools: fix testing/selftests/sigaltstack for s390x selftests: net: More graceful finding of `ip'. serial: sccnxp: Fix error handling in sccnxp_probe() tty: serial: lpuart: avoid report NULL interrupt serial: bcm63xx: fix timing issue. mxser: fix timeout calculation for low rates serial: sh-sci: document R8A77970 bindings netfilter: ipset: ipset list may return wrong member count for set with timeout netfilter: nat: Do not use ARRAY_SIZE() on spinlocks to fix zero div driver core: platform: Don't read past the end of "driver_override" buffer Revert "xhci: Limit USB2 port wake support for AMD Promontory hosts" xhci: set missing SuperSpeedPlus Link Protocol bit in roothub descriptor xhci: Fix sleeping with spin_lock_irq() held in ASmedia 1042A workaround usb: host: xhci-plat: allow sysdev to inherit from ACPI xhci: fix wrong endpoint ESIT value shown in tracing usb: pci-quirks.c: Corrected timeout values used in handshake xhci: fix finding correct bus_state structure for USB 3.1 hosts usb: xhci: Free the right ring in xhci_add_endpoint() base: arch_topology: fix section mismatch build warnings driver core: suppress sending MODALIAS in UNBIND uevents nvmem: add missing of_node_put() in of_nvmem_cell_get() nvmem: core: return EFBIG on out-of-range write auxdisplay: charlcd: properly restore atomic counter on error path binder: fix memory corruption in binder_transaction binder binder: fix an ret value override android: binder: fix type mismatch warning ALSA: compress: Remove unused variable xen: don't compile pv-specific parts if XEN_PV isn't configured mtd: nand: remove unused blockmask variable PM / QoS: Use the correct variable to check the QoS request type ACPI / PMIC: Add code reviewers to MAINTAINERS driver core: Fix link to device power management documentation ARC: reset: remove the misleading v1 suffix all over usb: dwc3: ep0: fix DMA starvation by assigning req->trb on ep0 staging: vchiq_2835_arm: Fix NULL ptr dereference in free_pagelist staging: speakup: fix speakup-r empty line lockup staging: pi433: Move limit check to switch default to kill warning staging: r8822be: fix null pointer dereferences with a null driver_adapter staging: mt29f_spinand: Enable the read ECC before program the page staging: unisys/visorbus: add __init/__exit annotations isofs: fix build regression quota: add missing lock into __dquot_transfer() arm64: ensure the kernel is compiled for LP64 arm64: relax assembly code alignment from 16 byte to 4 byte arm64: efi: Don't include EFI fpsimd save/restore code in non-EFI kernels mtd: nand: lpc32xx_mlc: Fix an error handling path in lpc32xx_nand_probe() usb: Increase quirk delay for USB devices uwb: properly check kthread_run return value uwb: ensure that endpoint is interrupt ARC: reset: add missing DT binding documentation for HSDKv1 reset driver ARC: reset: Only build on archs that have IOMEM ARM: at91: Replace uses of virt_to_phys with __pa_symbol ARM: dts: at91: sama5d27_som1_ek: fix USB host vbus ARM: dts: at91: sama5d27_som1_ek: fix typos ARM: dts: at91: sama5d27_som1_ek: update pinmux/pinconf for LEDs and USB mtd: spi-nor: fix DMA unsafe buffer issue in spi_nor_read_sfdp() mtd: spi-nor: Check consistency of the memory size extracted from the SFDP clocksource/integrator: Fix section mismatch warning Update version of cifs module cifs: hide unused functions SMB3: Add support for multidialect negotiate (SMB2.1 and later) arm64/syscalls: Move address limit check in loop arm/syscalls: Optimize address limit check Revert "arm/syscalls: Check address limit on user-mode return" syscalls: Use CHECK_DATA_CORRUPTION for addr_limit_user_check x86/mm/32: Load a sane CR3 before cpu_init() on secondary CPUs x86/mm/32: Move setup_clear_cpu_cap(X86_FEATURE_PCID) earlier x86/mm/64: Stop using CR3.PCID == 0 in ASID-aware code x86/mm: Factor out CR3-building code CIFS/SMB3: Update documentation to reflect SMB3 and various changes dma-coherent: fix rmem_dma_device_init regression clk: rockchip: add sclk_timer5 as critical clock on rk3128 clk: rockchip: fix up rk3128 pvtm and mipi_24m gate regs error clk: rockchip: add pclk_pmu as critical clock on rk3128 Revert "arm64: dts: rockchip: Add basic cpu frequencies for RK3368" genirq: Fix cpumask check in __irq_startup_managed() scsi: aacraid: error: testing array offset 'bus' after use scsi: lpfc: Don't return internal MBXERR_ERROR code from probe function fs/proc: Report eip/esp in /prod/PID/stat for coredumping xen: x86: mark xen_find_pt_base as __init scsi: aacraid: Fix 2T+ drives on SmartIOC-2000 scsi: sg: fixup infoleak when using SG_GET_REQUEST_TABLE scsi: sg: factor out sg_fill_request_table() scsi: sd: Remove unnecessary condition in sd_read_block_limits() drm/radeon: disable hard reset in hibernate for APUs objtool: Fix object file corruption objtool: Do not retrieve data from empty sections objtool: Fix memory leak in elf_create_rela_section() x86/cpu/AMD: Fix erratum 1076 (CPB bit) nl80211: check for the required netlink attributes presence scsi: acornscsi: fix build error scsi: scsi_transport_fc: fix NULL pointer dereference in fc_bsg_job_timeout drm/amdgpu: revert tile table update for oland watchdog/hardlockup: Clean up hotplug locking mess watchdog/hardlockup/perf: Simplify deferred event destroy watchdog/hardlockup/perf: Use new perf CPU enable mechanism watchdog/hardlockup/perf: Implement CPU enable replacement watchdog/hardlockup/perf: Implement init time detection of perf watchdog/hardlockup/perf: Implement init time perf validation watchdog/core: Get rid of the racy update loop watchdog/core, powerpc: Make watchdog_nmi_reconfigure() two stage watchdog/sysctl: Clean up sysctl variable name space watchdog/sysctl: Get rid of the #ifdeffery watchdog/core: Clean up header mess watchdog/core: Further simplify sysctl handling watchdog/core: Get rid of the thread teardown/setup dance watchdog/core: Create new thread handling infrastructure smpboot/threads, watchdog/core: Avoid runtime allocation watchdog/core: Split out cpumask write function watchdog/core: Clean up the #ifdef maze watchdog/core: Clean up stub functions watchdog/core: Remove the park_in_progress obfuscation watchdog/hardlockup/perf: Prevent CPU hotplug deadlock watchdog/hardlockup/perf: Remove broken self disable on failure watchdog/core: Mark hardlockup_detector_disable() __init watchdog/core: Rename watchdog_proc_mutex watchdog/core: Rework CPU hotplug locking watchdog/core: Remove broken suspend/resume interfaces parisc, watchdog/core: Use lockup_detector_stop() watchdog/core: Provide interface to stop from poweroff() perf/x86/intel, watchdog/core: Sanitize PMU HT bug workaround watchdog/hardlockup: Provide interface to stop/restart perf events HID: wacom: generic: Clear ABS_MISC when tool leaves proximity HID: wacom: generic: Send MSC_SERIAL and ABS_MISC when leaving prox HID: i2c-hid: allocate hid buffers for real worst case s390/dasd: fix race during dasd initialization s390/perf: fix bug when creating per-thread event etnaviv: fix gem object list corruption etnaviv: fix submit error path cifs: check rsp for NULL before dereferencing in SMB2_open qxl: fix primary surface handling drm/amdkfd: check for null dev to avoid a null pointer dereference mmc: cavium: Fix use-after-free in of_platform_device_destroy mmc: host: fix typo after MMC_DEBUG move mmc: block: Fix incorrectly initialized requests HID: rmi: Make sure the HID device is opened on resume iwlwifi: mvm: fix reorder buffer for 9000 devices iwlwifi: mvm: set status before calling iwl_mvm_send_cmd_status() iwlwifi: mvm: initialize status in iwl_mvm_add_int_sta_common() iwlwifi: mvm: handle FIF_ALLMULTI when setting multicast addresses iwlwifi: mvm: use IWL_HCMD_NOCOPY for MCAST_FILTER_CMD iwlwifi: mvm: wake the correct mac80211 queue iwlwifi: mvm: change state when queueing agg start work iwlwifi: mvm: send all non-bufferable frames on the probe queue iwlwifi: mvm: Flush non STA TX queues iwlwifi: mvm: fix wowlan resume failed to load INIT ucode ata: avoid gcc-7 warning in ata_timing_quantize HID: multitouch: Support ALPS PTP stick with pid 0x120A HID: multitouch: support buttons and trackpoint on Lenovo X1 Tab Gen2 HID: wacom: Correct coordinate system of touchring and pen twist HID: wacom: Properly report negative values from Intuos Pro 2 Bluetooth HID: multitouch: Fix system-control buttons not working HID: add multi-input quirk for IDC6680 touchscreen HID: wacom: leds: Don't try to control the EKR's read-only LEDs HID: wacom: bits shifted too much for 9th and 10th buttons md/raid5: preserve STRIPE_ON_UNPLUG_LIST in break_stripe_batch_list ARM64: dts: meson-gxbb: nanopi-k2: enable sdr104 mode ARM64: dts: meson-gxbb: nanopi-k2: enable sdcard UHS modes ARM64: dts: meson-gxbb: p20x: enable sdcard UHS modes ARM64: dts: meson-gxl: libretech-cc: enable high speed modes ARM64: dts: meson-gxl: libretech-cc: add card regulator settle times ARM64: dts: meson-gxbb: nanopi-k2: add card regulator settle times ARM64: dts: meson: add mmc clk gate pins ARM64: dts: meson: remove cap-sd-highspeed from emmc nodes ARM64: dts: meson-gx: Use correct mmc clock source 0 md/raid5: fix a race condition in stripe batch iio: magnetometer: st_magn: fix drdy line configuration for LIS3MDL iio: adc: ti-ads1015: fix comparator polarity setting drm/amdkfd: pass queue's mqd when destroying mqd drm/amdkfd: remove memset before memcpy powerpc/e6500: Update machine check for L1D cache err samples: Unrename SECCOMP_RET_KILL selftests/seccomp: Test thread vs process killing seccomp: Implement SECCOMP_RET_KILL_PROCESS action seccomp: Introduce SECCOMP_RET_KILL_PROCESS seccomp: Rename SECCOMP_RET_KILL to SECCOMP_RET_KILL_THREAD seccomp: Action to log before allowing seccomp: Filter flag to log all actions except SECCOMP_RET_ALLOW seccomp: Selftest for detection of filter flag support seccomp: Sysctl to configure actions that are allowed to be logged seccomp: Operation for checking if an action is available seccomp: Sysctl to display available actions seccomp: Provide matching filter for introspection selftests/seccomp: Refactor RET_ERRNO tests selftests/seccomp: Add simple seccomp overhead benchmark selftests/seccomp: Add tests for basic ptrace actions uapi linux/kfd_ioctl.h: only use __u32 and __u64 tile: array underflow in setup_maxnodemem() tile: defconfig: Cleanup from old Kconfig options Conflicts: include/scsi/scsi_device.h Change-Id: Ia72943c891d02c72b704c2408185eceab9df59ae Signed-off-by: Runmin Wang <runminw@codeaurora.org>	2017-10-11 17:36:44 -07:00
Kees Cook	686fef928b	timer: Prepare to change timer callback argument type ... Modern kernel callback systems pass the structure associated with a given callback to the callback function. The timer callback remains one of the legacy cases where an arbitrary unsigned long argument continues to be passed as the callback argument. This has several problems: - This bloats the timer_list structure with a normally redundant .data field. - No type checking is being performed, forcing callbacks to do explicit type casts of the unsigned long argument into the object that was passed, rather than using container_of(), as done in most of the other callback infrastructure. - Neighboring buffer overflows can overwrite both the .function and the .data field, providing attackers with a way to elevate from a buffer overflow into a simplistic ROP-like mechanism that allows calling arbitrary functions with a controlled first argument. - For future Control Flow Integrity work, this creates a unique function prototype for timer callbacks, instead of allowing them to continue to be clustered with other void functions that take a single unsigned long argument. This adds a new timer initialization API, which will ultimately replace the existing setup_timer(), setup_{deferrable,pinned,etc}_timer() family, named timer_setup() (to mirror hrtimer_setup(), making instances of its use much easier to grep for). In order to support the migration of existing timers into the new callback arguments, timer_setup() casts its arguments to the existing legacy types, and explicitly passes the timer pointer as the legacy data argument. Once all setup_*timer() callers have been replaced with timer_setup(), the casts can be removed, and the data argument can be dropped with the timer expiration code changed to just pass the timer to the callback directly. Since the regular pattern of using container_of() during local variable declaration repeats the need for the variable type declaration to be included, this adds a helper modeled after other from_*() helpers that wrap container_of(), named from_timer(). This helper uses typeof(*variable), removing the type redundancy and minimizing the need for line wraps in forthcoming conversions from "unsigned data long" to "struct timer_list *" in the timer callbacks: -void callback(unsigned long data) +void callback(struct timer_list *t) { - struct some_data_structure *local = (struct some_data_structure *)data; + struct some_data_structure *local = from_timer(local, t, timer); Finally, in order to support the handful of timer users that perform open-coded assignments of the .function (and .data) fields, provide cast macros (TIMER_FUNC_TYPE and TIMER_DATA_TYPE) that can be used temporarily. Once conversion has been completed, these can be globally trivially removed. Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lkml.kernel.org/r/20170928133817.GA113410@beast	2017-09-28 16:30:36 +02:00
Kyle Yan	3421f6b367	timer: Add a global deferrable timer ... Add a global deferrable timer in addition to the per-cpu deferrable timer to allow deferrable timers without the TIMER_PINNED flag to run on any active CPU. Change-Id: I8e6b77cef972589912ad18f324c46c936fbbb96f Signed-off-by: Kyle Yan <kyan@codeaurora.org> Signed-off-by: Prasad Sodagudi <psodagud@codeaurora.org>	2017-07-06 15:42:49 -07:00
Ingo Molnar	b2d5bfea2d	sched/headers, timers: Remove the <linux/sysctl.h> include from <linux/timer.h> ... So we want to simplify <linux/sched.h>'s header dependencies, but one roadblock of that is <linux/timer.h>'s inclusion of sysctl.h, which brings in other, problematic headers. Note that timer.h's inclusion of sysctl.h can be avoided if we pre-declare ctl_table - so do that. Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@kernel.org>	2017-03-03 01:45:39 +01:00
Linus Torvalds	79b17ea740	This release has no new tracing features, just clean ups, minor fixes ... and small optimizations. -----BEGIN PGP SIGNATURE----- iQExBAABCAAbBQJYtDiAFBxyb3N0ZWR0QGdvb2RtaXMub3JnAAoJEMm5BfJq2Y3L KygH/3sxuM9MCeJ29JsjmV49fHcNqryNZdvSadmnysPm+dFPiI6IgIIbh5R8H89b 2V2gfQSmOTKHu3/wvJr/MprkGP275sWlZPORYFLDl/+NE/3q7g0NKOMWunLcv6dH QQRJIFjSMeGawA3KYBEcwBYMlgNd2VgtTxqLqSBhWth5omV6UevJNHhe3xzZ4nEE YbRX2mxwOuRHOyFp0Hem+Bqro4z1VXJ6YDxOvae2PP8krrIhIHYw9EI22GK68a2g EyKqKPPaEzfU8IjHIQCqIZta5RufnCrDbfHU0CComPANBRGO7g+ZhLO11a/Z316N lyV7JqtF680iem7NKcQlwEwhlLE= =HJnl -----END PGP SIGNATURE----- Merge tag 'trace-v4.11' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace Pull tracing updates from Steven Rostedt: "This release has no new tracing features, just clean ups, minor fixes and small optimizations" * tag 'trace-v4.11' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: (25 commits) tracing: Remove outdated ring buffer comment tracing/probes: Fix a warning message to show correct maximum length tracing: Fix return value check in trace_benchmark_reg() tracing: Use modern function declaration jump_label: Reduce the size of struct static_key tracing/probe: Show subsystem name in messages tracing/hwlat: Update old comment about migration timers: Make flags output in the timer_start tracepoint useful tracing: Have traceprobe_probes_write() not access userspace unnecessarily tracing: Have COMM event filter key be treated as a string ftrace: Have set_graph_function handle multiple functions in one write ftrace: Do not hold references of ftrace_graph_{notrace_}hash out of graph_lock tracing: Reset parser->buffer to allow multiple "puts" ftrace: Have set_graph_functions handle write with RDWR ftrace: Reset fgd->hash in ftrace_graph_write() ftrace: Replace (void *)1 with a meaningful macro name FTRACE_GRAPH_EMPTY ftrace: Create a slight optimization on searching the ftrace_hash tracing: Add ftrace_hash_key() helper function ftrace: Convert graph filter to use hash tables ftrace: Expose ftrace_hash_empty and ftrace_lookup_ip ...	2017-02-27 13:26:17 -08:00
Thomas Gleixner	8a58a34ba4	timers: Make flags output in the timer_start tracepoint useful ... The timer flags in the timer_start trace event contain lots of useful information, but the meaning is not clear in the trace output. Making tools rely on the bit positions is bad as they might change over time. Decode the flags in the print out. Tools can retrieve the bits and their meaning from the trace format file. Link: http://lkml.kernel.org/r/alpine.DEB.2.20.1702101639290.4036@nanos Requested-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>	2017-02-15 09:02:24 -05:00
Kees Cook	dfb4357da6	time: Remove CONFIG_TIMER_STATS ... Currently CONFIG_TIMER_STATS exposes process information across namespaces: kernel/time/timer_list.c print_timer(): SEQ_printf(m, ", %s/%d", tmp, timer->start_pid); /proc/timer_list: #11: <0000000000000000>, hrtimer_wakeup, S:01, do_nanosleep, cron/2570 Given that the tracer can give the same information, this patch entirely removes CONFIG_TIMER_STATS. Suggested-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Kees Cook <keescook@chromium.org> Acked-by: John Stultz <john.stultz@linaro.org> Cc: Nicolas Pitre <nicolas.pitre@linaro.org> Cc: linux-doc@vger.kernel.org Cc: Lai Jiangshan <jiangshanlai@gmail.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Xing Gao <xgao01@email.wm.edu> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Jessica Frazelle <me@jessfraz.com> Cc: kernel-hardening@lists.openwall.com Cc: Nicolas Iooss <nicolas.iooss_linux@m4x.org> Cc: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> Cc: Petr Mladek <pmladek@suse.com> Cc: Richard Cochran <richardcochran@gmail.com> Cc: Tejun Heo <tj@kernel.org> Cc: Michal Marek <mmarek@suse.com> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Oleg Nesterov <oleg@redhat.com> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Olof Johansson <olof@lixom.net> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: linux-api@vger.kernel.org Cc: Arjan van de Ven <arjan@linux.intel.com> Link: http://lkml.kernel.org/r/20170208192659.GA32582@beast Signed-off-by: Thomas Gleixner <tglx@linutronix.de>	2017-02-10 11:15:08 +01:00
Richard Cochran	24f73b9971	timers/core: Convert to hotplug state machine ... When tearing down, call timers_dead_cpu() before notify_dead(). There is a hidden dependency between: - timers - block multiqueue - rcutree If timers_dead_cpu() comes later than blk_mq_queue_reinit_notify() that latter function causes a RCU stall. Signed-off-by: Richard Cochran <rcochran@linutronix.de> Signed-off-by: Anna-Maria Gleixner <anna-maria@linutronix.de> Reviewed-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Cc: John Stultz <john.stultz@linaro.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: rt@linutronix.de Link: http://lkml.kernel.org/r/20160713153337.566790058@linutronix.de Signed-off-by: Ingo Molnar <mingo@kernel.org>	2016-07-15 10:41:42 +02:00
Thomas Gleixner	53bf837b78	timers: Remove set_timer_slack() leftovers ... We now have implicit batching in the timer wheel. The slack API is no longer used, so remove it. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Alan Stern <stern@rowland.harvard.edu> Cc: Andrew F. Davis <afd@ti.com> Cc: Arjan van de Ven <arjan@infradead.org> Cc: Chris Mason <clm@fb.com> Cc: David S. Miller <davem@davemloft.net> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com> Cc: Eric Dumazet <edumazet@google.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: George Spelvin <linux@sciencehorizons.net> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Jaehoon Chung <jh80.chung@samsung.com> Cc: Jens Axboe <axboe@kernel.dk> Cc: John Stultz <john.stultz@linaro.org> Cc: Josh Triplett <josh@joshtriplett.org> Cc: Len Brown <lenb@kernel.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Mathias Nyman <mathias.nyman@intel.com> Cc: Pali Rohár <pali.rohar@gmail.com> Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Rik van Riel <riel@redhat.com> Cc: Sebastian Reichel <sre@kernel.org> Cc: Ulf Hansson <ulf.hansson@linaro.org> Cc: linux-block@vger.kernel.org Cc: linux-kernel@vger.kernel.org Cc: linux-mmc@vger.kernel.org Cc: linux-pm@vger.kernel.org Cc: linux-usb@vger.kernel.org Cc: netdev@vger.kernel.org Cc: rt@linutronix.de Link: http://lkml.kernel.org/r/20160704094342.189813118@linutronix.de Signed-off-by: Ingo Molnar <mingo@kernel.org>	2016-07-07 10:35:09 +02:00
Thomas Gleixner	500462a9de	timers: Switch to a non-cascading wheel ... The current timer wheel has some drawbacks: 1) Cascading: Cascading can be an unbound operation and is completely pointless in most cases because the vast majority of the timer wheel timers are canceled or rearmed before expiration. (They are used as timeout safeguards, not as real timers to measure time.) 2) No fast lookup of the next expiring timer: In NOHZ scenarios the first timer soft interrupt after a long NOHZ period must fast forward the base time to the current value of jiffies. As we have no way to find the next expiring timer fast, the code loops linearly and increments the base time one by one and checks for expired timers in each step. This causes unbound overhead spikes exactly in the moment when we should wake up as fast as possible. After a thorough analysis of real world data gathered on laptops, workstations, webservers and other machines (thanks Chris!) I came to the conclusion that the current 'classic' timer wheel implementation can be modified to address the above issues. The vast majority of timer wheel timers is canceled or rearmed before expiry. Most of them are timeouts for networking and other I/O tasks. The nature of timeouts is to catch the exception from normal operation (TCP ack timed out, disk does not respond, etc.). For these kinds of timeouts the accuracy of the timeout is not really a concern. Timeouts are very often approximate worst-case values and in case the timeout fires, we already waited for a long time and performance is down the drain already. The few timers which actually expire can be split into two categories: 1) Short expiry times which expect halfways accurate expiry 2) Long term expiry times are inaccurate today already due to the batching which is done for NOHZ automatically and also via the set_timer_slack() API. So for long term expiry timers we can avoid the cascading property and just leave them in the less granular outer wheels until expiry or cancelation. Timers which are armed with a timeout larger than the wheel capacity are no longer cascaded. We expire them with the longest possible timeout (6+ days). We have not observed such timeouts in our data collection, but at least we handle them, applying the rule of the least surprise. To avoid extending the wheel levels for HZ=1000 so we can accomodate the longest observed timeouts (5 days in the network conntrack code) we reduce the first level granularity on HZ=1000 to 4ms, which effectively is the same as the HZ=250 behaviour. From our data analysis there is nothing which relies on that 1ms granularity and as a side effect we get better batching and timer locality for the networking code as well. Contrary to the classic wheel the granularity of the next wheel is not the capacity of the first wheel. The granularities of the wheels are in the currently chosen setting 8 times the granularity of the previous wheel. So for HZ=250 we end up with the following granularity levels: Level Offset Granularity Range 0 0 4 ms 0 ms - 252 ms 1 64 32 ms 256 ms - 2044 ms (256ms - ~2s) 2 128 256 ms 2048 ms - 16380 ms (~2s - ~16s) 3 192 2048 ms (~2s) 16384 ms - 131068 ms (~16s - ~2m) 4 256 16384 ms (~16s) 131072 ms - 1048572 ms (~2m - ~17m) 5 320 131072 ms (~2m) 1048576 ms - 8388604 ms (~17m - ~2h) 6 384 1048576 ms (~17m) 8388608 ms - 67108863 ms (~2h - ~18h) 7 448 8388608 ms (~2h) 67108864 ms - 536870911 ms (~18h - ~6d) That's a worst case inaccuracy of 12.5% for the timers which are queued at the beginning of a level. So the new wheel concept addresses the old issues: 1) Cascading is avoided completely 2) By keeping the timers in the bucket until expiry/cancelation we can track the buckets which have timers enqueued in a bucket bitmap and therefore can look up the next expiring timer very fast and O(1). A further benefit of the concept is that the slack calculation which is done on every timer start is no longer necessary because the granularity levels provide natural batching already. Our extensive testing with various loads did not show any performance degradation vs. the current wheel implementation. This patch does not address the 'fast lookup' issue as we wanted to make sure that there is no regression introduced by the wheel redesign. The optimizations are in follow up patches. This patch contains fixes from Anna-Maria Gleixner and Richard Cochran. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Arjan van de Ven <arjan@infradead.org> Cc: Chris Mason <clm@fb.com> Cc: Eric Dumazet <edumazet@google.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: George Spelvin <linux@sciencehorizons.net> Cc: Josh Triplett <josh@joshtriplett.org> Cc: Len Brown <lenb@kernel.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Rik van Riel <riel@redhat.com> Cc: rt@linutronix.de Link: http://lkml.kernel.org/r/20160704094342.108621834@linutronix.de Signed-off-by: Ingo Molnar <mingo@kernel.org>	2016-07-07 10:35:09 +02:00
Thomas Gleixner	b0d6e2dcb2	timers: Reduce the CPU index space to 256k ... We want to store the array index in the flags space. 256k CPUs should be enough for a while. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Arjan van de Ven <arjan@infradead.org> Cc: Chris Mason <clm@fb.com> Cc: George Spelvin <linux@sciencehorizons.net> Cc: Josh Triplett <josh@joshtriplett.org> Cc: Len Brown <lenb@kernel.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Paul McKenney <paulmck@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Rik van Riel <riel@redhat.com> Cc: rt@linutronix.de Link: http://lkml.kernel.org/r/20160704094342.030144293@linutronix.de Signed-off-by: Ingo Molnar <mingo@kernel.org>	2016-07-07 10:35:08 +02:00
Thomas Gleixner	177ec0a0a5	timers: Remove the deprecated mod_timer_pinned() API ... We switched all users to initialize the timers as pinned and call mod_timer(). Remove the now unused timer API function. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Arjan van de Ven <arjan@infradead.org> Cc: Chris Mason <clm@fb.com> Cc: Eric Dumazet <edumazet@google.com> Cc: George Spelvin <linux@sciencehorizons.net> Cc: Josh Triplett <josh@joshtriplett.org> Cc: Len Brown <lenb@kernel.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Rik van Riel <riel@redhat.com> Cc: rt@linutronix.de Link: http://lkml.kernel.org/r/20160704094341.706205231@linutronix.de Signed-off-by: Ingo Molnar <mingo@kernel.org>	2016-07-07 10:35:06 +02:00
Thomas Gleixner	e675447bda	timers: Make 'pinned' a timer property ... We want to move the timer migration logic from a 'push' to a 'pull' model. Under the current 'push' model pinned timers are handled via a runtime API variant: mod_timer_pinned(). The 'pull' model requires us to store the pinned attribute of a timer in the timer_list structure itself, as a new TIMER_PINNED bit in timer->flags. This flag must be set at initialization time and the timer APIs recognize the flag. This patch: - Implements the new flag and associated new-style initialization methods - makes mod_timer() recognize new-style pinned timers, - and adds some migration helper facility to allow step by step conversion of old-style to new-style pinned timers. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Arjan van de Ven <arjan@infradead.org> Cc: Chris Mason <clm@fb.com> Cc: Eric Dumazet <edumazet@google.com> Cc: George Spelvin <linux@sciencehorizons.net> Cc: Josh Triplett <josh@joshtriplett.org> Cc: Len Brown <lenb@kernel.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Rik van Riel <riel@redhat.com> Cc: rt@linutronix.de Link: http://lkml.kernel.org/r/20160704094341.049338558@linutronix.de Signed-off-by: Ingo Molnar <mingo@kernel.org>	2016-07-07 10:25:13 +02:00
Lucas Stach	6f3ffc1915	timer: add setup_deferrable_timer macro ... Add the trivial missing macro to setup a deferrable timer. Signed-off-by: Lucas Stach <l.stach@pengutronix.de> Acked-by: Thomas Gleixner <tglx@linutronix.de>	2016-05-06 10:42:29 +02:00
Thomas Gleixner	bc7a34b8b9	timer: Reduce timer migration overhead if disabled ... Eric reported that the timer_migration sysctl is not really nice performance wise as it needs to check at every timer insertion whether the feature is enabled or not. Further the check does not live in the timer code, so we have an extra function call which checks an extra cache line to figure out that it is disabled. We can do better and store that information in the per cpu (hr)timer bases. I pondered to use a static key, but that's a nightmare to update from the nohz code and the timer base cache line is hot anyway when we select a timer base. The old logic enabled the timer migration unconditionally if CONFIG_NO_HZ was set even if nohz was disabled on the kernel command line. With this modification, we start off with migration disabled. The user visible sysctl is still set to enabled. If the kernel switches to NOHZ migration is enabled, if the user did not disable it via the sysctl prior to the switch. If nohz=off is on the kernel command line, migration stays disabled no matter what. Before: 47.76% hog [.] main 14.84% [kernel] [k] _raw_spin_lock_irqsave 9.55% [kernel] [k] _raw_spin_unlock_irqrestore 6.71% [kernel] [k] mod_timer 6.24% [kernel] [k] lock_timer_base.isra.38 3.76% [kernel] [k] detach_if_pending 3.71% [kernel] [k] del_timer 2.50% [kernel] [k] internal_add_timer 1.51% [kernel] [k] get_nohz_timer_target 1.28% [kernel] [k] __internal_add_timer 0.78% [kernel] [k] timerfn 0.48% [kernel] [k] wake_up_nohz_cpu After: 48.10% hog [.] main 15.25% [kernel] [k] _raw_spin_lock_irqsave 9.76% [kernel] [k] _raw_spin_unlock_irqrestore 6.50% [kernel] [k] mod_timer 6.44% [kernel] [k] lock_timer_base.isra.38 3.87% [kernel] [k] detach_if_pending 3.80% [kernel] [k] del_timer 2.67% [kernel] [k] internal_add_timer 1.33% [kernel] [k] __internal_add_timer 0.73% [kernel] [k] timerfn 0.54% [kernel] [k] wake_up_nohz_cpu Reported-by: Eric Dumazet <edumazet@google.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Paul McKenney <paulmck@linux.vnet.ibm.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Viresh Kumar <viresh.kumar@linaro.org> Cc: John Stultz <john.stultz@linaro.org> Cc: Joonwoo Park <joonwoop@codeaurora.org> Cc: Wenbo Wang <wenbo.wang@memblaze.com> Link: http://lkml.kernel.org/r/20150526224512.127050787@linutronix.de Signed-off-by: Thomas Gleixner <tglx@linutronix.de>	2015-06-19 15:18:28 +02:00
Thomas Gleixner	c74441a17e	timer: Stats: Simplify the flags handling ... Simplify the handling of the flag storage for the timer statistics. No intermediate storage anymore. Just hand over the flags field. I left the printout of 'deferrable' for now because changing this would be an ABI update and I have no idea how strong people feel about that. OTOH, I wonder whether we should kill the whole timer stats stuff because all of that information can be retrieved via ftrace/perf as well. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Paul McKenney <paulmck@linux.vnet.ibm.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Eric Dumazet <edumazet@google.com> Cc: Viresh Kumar <viresh.kumar@linaro.org> Cc: John Stultz <john.stultz@linaro.org> Cc: Joonwoo Park <joonwoop@codeaurora.org> Cc: Wenbo Wang <wenbo.wang@memblaze.com> Link: http://lkml.kernel.org/r/20150526224512.046626248@linutronix.de Signed-off-by: Thomas Gleixner <tglx@linutronix.de>	2015-06-19 15:18:27 +02:00
Thomas Gleixner	0eeda71bc3	timer: Replace timer base by a cpu index ... Instead of storing a pointer to the per cpu tvec_base we can simply cache a CPU index in the timer_list and use that to get hold of the correct per cpu tvec_base. This is only used in lock_timer_base() and the slightly larger code is peanuts versus the spinlock operation and the d-cache foot print of the timer wheel. Aside of that this allows to get rid of following nuisances: - boot_tvec_base That statically allocated 4k bss data is just kept around so the timer has a home when it gets statically initialized. It serves no other purpose. With the CPU index we assign the timer to CPU0 at static initialization time and therefor can avoid the whole boot_tvec_base dance. That also simplifies the init code, which just can use the per cpu base. Before: text data bss dec hex filename 17491 9201 4160 30852 7884 ../build/kernel/time/timer.o After: text data bss dec hex filename 17440 9193 0 26633 6809 ../build/kernel/time/timer.o - Overloading the base pointer with various flags The CPU index has enough space to hold the flags (deferrable, irqsafe) so we can get rid of the extra masking and bit fiddling with the base pointer. As a benefit we reduce the size of struct timer_list on 64 bit machines. 4 - 8 bytes, a size reduction up to 15% per struct timer_list, which is a real win as we have tons of them embedded in other structs. This changes also the newly added deferrable printout of the timer start trace point to capture and print all timer->flags, which allows us to decode the target cpu of the timer as well. We might have used bitfields for this, but that would change the static initializers and the init function for no value to accomodate big endian bitfields. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Paul McKenney <paulmck@linux.vnet.ibm.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Eric Dumazet <edumazet@google.com> Cc: Viresh Kumar <viresh.kumar@linaro.org> Cc: John Stultz <john.stultz@linaro.org> Cc: Joonwoo Park <joonwoop@codeaurora.org> Cc: Wenbo Wang <wenbo.wang@memblaze.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Badhri Jagan Sridharan <Badhri@google.com> Link: http://lkml.kernel.org/r/20150526224511.950084301@linutronix.de Signed-off-by: Thomas Gleixner <tglx@linutronix.de>	2015-06-19 15:18:27 +02:00
Thomas Gleixner	1dabbcec2c	timer: Use hlist for the timer wheel hash buckets ... This reduces the size of struct tvec_base by 50% and results in slightly smaller code as well. Before: struct tvec_base: size: 8256, cachelines: 129 text data bss dec hex filename 17698 13297 8256 39251 9953 ../build/kernel/time/timer.o After: struct tvec_base: 4160, cachelines: 65 text data bss dec hex filename 17491 9201 4160 30852 7884 ../build/kernel/time/timer.o Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Paul McKenney <paulmck@linux.vnet.ibm.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Eric Dumazet <edumazet@google.com> Cc: John Stultz <john.stultz@linaro.org> Cc: Joonwoo Park <joonwoop@codeaurora.org> Cc: Wenbo Wang <wenbo.wang@memblaze.com> Link: http://lkml.kernel.org/r/20150526224511.854731214@linutronix.de Signed-off-by: Thomas Gleixner <tglx@linutronix.de>	2015-06-19 15:18:27 +02:00
Thomas Gleixner	c1ad348b45	tick: Nohz: Rework next timer evaluation ... The evaluation of the next timer in the nohz code is based on jiffies while all the tick internals are nano seconds based. We have also to convert hrtimer nanoseconds to jiffies in the !highres case. That's just wrong and introduces interesting corner cases. Turn it around and convert the next timer wheel timer expiry and the rcu event to clock monotonic and base all calculations on nanoseconds. That identifies the case where no timer is pending clearly with an absolute expiry value of KTIME_MAX. Makes the code more readable and gets rid of the jiffies magic in the nohz code. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Acked-by: Peter Zijlstra <peterz@infradead.org> Cc: Preeti U Murthy <preeti@linux.vnet.ibm.com> Cc: Viresh Kumar <viresh.kumar@linaro.org> Cc: Marcelo Tosatti <mtosatti@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Josh Triplett <josh@joshtriplett.org> Cc: Lai Jiangshan <laijs@cn.fujitsu.com> Cc: John Stultz <john.stultz@linaro.org> Cc: Marcelo Tosatti <mtosatti@redhat.com> Link: http://lkml.kernel.org/r/20150414203502.184198593@linutronix.de Signed-off-by: Thomas Gleixner <tglx@linutronix.de>	2015-04-22 17:06:50 +02:00
Tejun Heo	c5f66e99b7	timer: Implement TIMER_IRQSAFE ... Timer internals are protected with irq-safe locks but timer execution isn't, so a timer being dequeued for execution and its execution aren't atomic against IRQs. This makes it impossible to wait for its completion from IRQ handlers and difficult to shoot down a timer from IRQ handlers. This issue caused some issues for delayed_work interface. Because there's no way to reliably shoot down delayed_work->timer from IRQ handlers, __cancel_delayed_work() can't share the logic to steal the target delayed_work with cancel_delayed_work_sync(), and can only steal delayed_works which are on queued on timer. Similarly, the pending mod_delayed_work() can't be used from IRQ handlers. This patch adds a new timer flag TIMER_IRQSAFE, which makes the timer to be executed without enabling IRQ after dequeueing such that its dequeueing and execution are atomic against IRQ handlers. This makes it safe to wait for the timer's completion from IRQ handlers, for example, using del_timer_sync(). It can never be executing on the local CPU and if executing on other CPUs it won't be interrupted until done. This will enable simplifying delayed_work cancel/mod interface. Signed-off-by: Tejun Heo <tj@kernel.org> Cc: torvalds@linux-foundation.org Cc: peterz@infradead.org Link: http://lkml.kernel.org/r/1344449428-24962-5-git-send-email-tj@kernel.org Signed-off-by: Thomas Gleixner <tglx@linutronix.de>	2012-08-21 16:28:31 +02:00
Tejun Heo	fc683995a6	timer: Clean up timer initializers ... Over time, timer initializers became messy with unnecessarily duplicated code which are inconsistently spread across timer.h and timer.c. This patch cleans up timer initializers. * timer.c::__init_timer() is renamed to do_init_timer(). * __TIMER_INITIALIZER() added. It takes @flags and all initializers are wrappers around it. * init_timer[_on_stack]_key() now take @flags. * __init_timer[_on_stack]() added. They take @flags and all init macros are wrappers around them. * __setup_timer[_on_stack]() added. It uses __init_timer() and takes @flags. All setup macros are wrappers around the two. Note that this patch doesn't add missing init/setup combinations - e.g. init_timer_deferrable_on_stack(). Adding missing ones is trivial. Signed-off-by: Tejun Heo <tj@kernel.org> Cc: torvalds@linux-foundation.org Cc: peterz@infradead.org Link: http://lkml.kernel.org/r/1344449428-24962-4-git-send-email-tj@kernel.org Signed-off-by: Thomas Gleixner <tglx@linutronix.de>	2012-08-21 16:28:30 +02:00
Tejun Heo	5a9af38d05	timer: Relocate declarations of init_timer_on_stack_key() ... init_timer_on_stack_key() is used by init macro definitions. Move init_timer_on_stack_key() and destroy_timer_on_stack() declarations above init macro defs. This will make the next init cleanup patch easier to read. Signed-off-by: Tejun Heo <tj@kernel.org> Cc: torvalds@linux-foundation.org Cc: peterz@infradead.org Link: http://lkml.kernel.org/r/1344449428-24962-3-git-send-email-tj@kernel.org Signed-off-by: Thomas Gleixner <tglx@linutronix.de>	2012-08-21 16:28:30 +02:00
Tejun Heo	e52b1db37b	timer: Generalize timer->base flags handling ... To prepare for addition of another flag, generalize timer->base flags handling. * Rename from TBASE_*_FLAG to TIMER_* and make them LU constants. * Define and use TIMER_FLAG_MASK for flags masking so that multiple flags can be handled correctly. * Don't dereference timer->base directly even if !tbase_get_deferrable(). All two such places are already passed in @base, so use it instead. * Make sure tvec_base's alignment is large enough for timer->base flags using BUILD_BUG_ON(). Signed-off-by: Tejun Heo <tj@kernel.org> Cc: torvalds@linux-foundation.org Cc: peterz@infradead.org Link: http://lkml.kernel.org/r/1344449428-24962-2-git-send-email-tj@kernel.org Signed-off-by: Thomas Gleixner <tglx@linutronix.de>	2012-08-21 16:28:30 +02:00
Yong Zhang	6f1bc451e6	timer: Make try_to_del_timer_sync() the same on SMP and UP ... On UP try_to_del_timer_sync() is mapped to del_timer() which does not take the running timer callback into account, so it has different semantics. Remove the SMP dependency of try_to_del_timer_sync() by using base->running_timer in the UP case as well. [ tglx: Removed set_running_timer() inline and tweaked the changelog ] Signed-off-by: Yong Zhang <yong.zhang0@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Peter Zijlstra <peterz@infradead.org> Acked-by: Oleg Nesterov <oleg@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>	2010-10-22 14:46:25 +02:00
Phil Carmody	dd6414b50f	timer: Permit statically-declared work with deferrable timers ... Currently, you have to just define a delayed_work uninitialised, and then initialise it before first use. That's a tad clumsy. At risk of playing mind-games with the compiler, fooling it into doing pointer arithmetic with compile-time-constants, this lets clients properly initialise delayed work with deferrable timers statically. This patch was inspired by the issues which lead Artem Bityutskiy to commit 8eab945c5616fc984 ("sunrpc: make the cache cleaner workqueue deferrable"). Signed-off-by: Phil Carmody <ext-phil.2.carmody@nokia.com> Acked-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Cc: Arjan van de Ven <arjan@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>	2010-10-21 17:30:06 +02:00
Changli Gao	aaabe31c25	timer: Initialize the field slack of timer_list ... TIMER_INITIALIZER() should initialize the field slack of timer_list as __init_timer() does. Signed-off-by: Changli Gao <xiaosuo@gmail.com> Cc: Arjan van de Ven <arjan@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>	2010-10-21 17:30:06 +02:00
Richard Kennedy	d0959024d8	timer_list: Remove alignment padding on 64 bit when CONFIG_TIMER_STATS ... Reorder struct timer_list to remove 8 bytes of alignment padding on 64 bit builds when CONFIG_TIMER_STATS is selected. timer_list is widely used across the kernel so many structures will benefit and shrink in size. For example, with my config on x86_64 per_cpu_dm_data shrinks from 136 to 128 bytes and ahci_port_priv shrinks from 1032 to 968 bytes. Signed-off-by: Richard Kennedy <richard@rsk.demon.co.uk> Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>	2010-10-21 17:30:06 +02:00
Jesse Barnes	8cadd2831b	timer: add on-stack deferrable timer interfaces ... In some cases (for instance with kernel threads) it may be desireable to use on-stack deferrable timers to get their power saving benefits. Add interfaces to support this for the IPS driver. Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Matthew Garrett <mjg@redhat.com>	2010-08-03 09:48:45 -04:00
Arjan van de Ven	3bbb9ec946	timers: Introduce the concept of timer slack for legacy timers ... While HR timers have had the concept of timer slack for quite some time now, the legacy timers lacked this concept, and had to make do with round_jiffies() and friends. Timer slack is important for power management; grouping timers reduces the number of wakeups which in turn reduces power consumption. This patch introduces timer slack to the legacy timers using the following pieces: * A slack field in the timer struct * An api (set_timer_slack) that callers can use to set explicit timer slack * A default slack of 0.4% of the requested delay for callers that do not set any explicit slack * Rounding code that is part of mod_timer() that tries to group timers around jiffies values every 'power of two' (so quick timers will group around every 2, but longer timers will group around every 4, 8, 16, 32 etc) Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Cc: johnstul@us.ibm.com Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>	2010-04-06 21:50:02 +02:00
Randy Dunlap	e500011ffa	timers: Drop a function prototype ... Drop prototype for non-existent next_timer_interrupt() function. Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Cc: akpm <akpm@linux-foundation.org> LKML-Reference: <4A9ADEC0.70306@oracle.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>	2009-08-30 22:26:34 +02:00
Heiko Carstens	507e123151	timer stats: Optimize by adding quick check to avoid function calls ... When the kernel is configured with CONFIG_TIMER_STATS but timer stats are runtime disabled we still get calls to __timer_stats_timer_set_start_info which initializes some fields in the corresponding struct timer_list. So add some quick checks in the the timer stats setup functions to avoid function calls to __timer_stats_timer_set_start_info when timer stats are disabled. In an artificial workload that does nothing but playing ping pong with a single tcp packet via loopback this decreases cpu consumption by 1 - 1.5%. This is part of a modified function trace output on SLES11: perl-2497 [00] 28630647177732388 [+ 125]: sk_reset_timer <-tcp_v4_rcv perl-2497 [00] 28630647177732513 [+ 125]: mod_timer <-sk_reset_timer perl-2497 [00] 28630647177732638 [+ 125]: __timer_stats_timer_set_start_info <-mod_timer perl-2497 [00] 28630647177732763 [+ 125]: __mod_timer <-mod_timer perl-2497 [00] 28630647177732888 [+ 125]: __timer_stats_timer_set_start_info <-__mod_timer perl-2497 [00] 28630647177733013 [+ 93]: lock_timer_base <-__mod_timer Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Mustafa Mesanovic <mustafa.mesanovic@de.ibm.com> Cc: Arjan van de Ven <arjan@infradead.org> LKML-Reference: <20090623153811.GA4641@osiris.boeblingen.de.ibm.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>	2009-06-24 11:15:09 +02:00
Arun R Bharadwaj	597d027573	timers: Framework for identifying pinned timers ... * Arun R Bharadwaj <arun@linux.vnet.ibm.com> [2009-04-16 12:11:36]: This patch creates a new framework for identifying cpu-pinned timers and hrtimers. This framework is needed because pinned timers are expected to fire on the same CPU on which they are queued. So it is essential to identify these and not migrate them, in case there are any. For regular timers, the currently existing add_timer_on() can be used queue pinned timers and subsequently mod_timer_pinned() can be used to modify the 'expires' field. For hrtimers, new modes HRTIMER_ABS_PINNED and HRTIMER_REL_PINNED are added to queue cpu-pinned hrtimer. [ tglx: use .._PINNED mode argument instead of creating tons of new functions ] Signed-off-by: Arun R Bharadwaj <arun@linux.vnet.ibm.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>	2009-05-13 16:52:42 +02:00
Linus Torvalds	c4e1aa67ed	Merge branch 'locking-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip ... * 'locking-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (33 commits) lockdep: fix deadlock in lockdep_trace_alloc lockdep: annotate reclaim context (__GFP_NOFS), fix SLOB lockdep: annotate reclaim context (__GFP_NOFS), fix lockdep: build fix for !PROVE_LOCKING lockstat: warn about disabled lock debugging lockdep: use stringify.h lockdep: simplify check_prev_add_irq() lockdep: get_user_chars() redo lockdep: simplify get_user_chars() lockdep: add comments to mark_lock_irq() lockdep: remove macro usage from mark_held_locks() lockdep: fully reduce mark_lock_irq() lockdep: merge the !_READ mark_lock_irq() helpers lockdep: merge the _READ mark_lock_irq() helpers lockdep: simplify mark_lock_irq() helpers #3 lockdep: further simplify mark_lock_irq() helpers lockdep: simplify the mark_lock_irq() helpers lockdep: split up mark_lock_irq() lockdep: generate usage strings lockdep: generate the state bit definitions ...	2009-03-30 17:17:35 -07:00
Ingo Molnar	74019224ac	timers: add mod_timer_pending() ... Impact: new timer API Based on an idea from Martin Josefsson with the help of Patrick McHardy and Stephen Hemminger: introduce the mod_timer_pending() API which is a mod_timer() offspring that is an invariant on already removed timers. (regular mod_timer() re-activates non-pending timers.) This is useful for the networking code in that it can allow unserialized mod_timer_pending() timer-forwarding calls, but a single del_timer*() will stop the timer from being reactivated again. Also while at it: - optimize the regular mod_timer() path some more, the timer-stat and a debug check was needlessly duplicated in __mod_timer(). - make the exports come straight after the function, as most other exports in timer.c already did. - eliminate __mod_timer() as an external API, change the users to mod_timer(). The regular mod_timer() code path is not impacted significantly, due to inlining optimizations and due to the simplifications. Based-on-patch-from: Stephen Hemminger <shemminger@vyatta.com> Acked-by: Stephen Hemminger <shemminger@vyatta.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Patrick McHardy <kaber@trash.net> Cc: netdev@vger.kernel.org Cc: Oleg Nesterov <oleg@redhat.com> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>	2009-02-18 19:26:33 +01:00
Johannes Berg	6f2b9b9a9d	timer: implement lockdep deadlock detection ... This modifies the timer code in a way to allow lockdep to detect deadlocks resulting from a lock being taken in the timer function as well as around the del_timer_sync() call. Signed-off-by: Johannes Berg <johannes@sipsolutions.net>	2009-02-14 23:25:52 +01:00
Alan Stern	9c133c469d	Add round_jiffies_up and related routines ... This patch (as1158b) adds round_jiffies_up() and friends. These routines work like the analogous round_jiffies() functions, except that they will never round down. The new routines will be useful for timeouts where we don't care exactly when the timer expires, provided it doesn't expire too soon. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>	2008-11-06 08:42:48 +01:00
Thomas Gleixner	c6f3a97f86	debugobjects: add timer specific object debugging code ... Add calls to the generic object debugging infrastructure and provide fixup functions which allow to keep the system alive when recoverable problems have been detected by the object debugging core code. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Ingo Molnar <mingo@elte.hu> Cc: Greg KH <greg@kroah.com> Cc: Randy Dunlap <randy.dunlap@oracle.com> Cc: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>	2008-04-30 08:29:53 -07:00
Li Zefan	6d141c3ff6	workqueue: make delayed_work_timer_fn() static ... delayed_work_timer_fn() is a timer function, make it static. Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>	2008-02-08 09:22:37 -08:00
Harvey Harrison	ec7015840a	Remove fastcall from linux/include ... [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>	2008-02-08 09:22:31 -08:00
Pavel Machek	a6fa8e5a61	time: clean hungarian notation from timers ... Clean up hungarian notation from timer code. Signed-off-by: Pavel Machek <pavel@suse.cz> Cc: john stultz <johnstul@us.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>	2008-01-30 13:30:00 +01:00
Venki Pallipadi	c5c061b8f9	Add a flag to indicate deferrable timers in /proc/timer_stats ... Add a flag in /proc/timer_stats to indicate deferrable timers. This will let developers/users to differentiate between types of tiemrs in /proc/timer_stats. Deferrable timer and normal timer will appear in /proc/timer_stats as below. 10D, 1 swapper queue_delayed_work_on (delayed_work_timer_fn) 10, 1 swapper queue_delayed_work_on (delayed_work_timer_fn) Also version of timer_stats changes from v0.1 to v0.2 Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Acked-by: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: john stultz <johnstul@us.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>	2007-07-16 09:05:45 -07:00
Robert P. J. Day	0a3021f4e2	Remove unnecessary includes of spinlock.h under include/linux ... Remove the obviously unnecessary includes of <linux/spinlock.h> under the include/linux/ directory, and fix the couple errors that are introduced as a result of that. Signed-off-by: Robert P. J. Day <rpjday@mindspring.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>	2007-07-16 09:05:42 -07:00
Thomas Gleixner	eaad084bb0	NOHZ: prevent multiplication overflow - stop timer for huge timeouts ... get_next_timer_interrupt() returns a delta of (LONG_MAX > 1) in case there is no timer pending. On 64 bit machines this results in a multiplication overflow in tick_nohz_stop_sched_tick(). Reported by: Dave Miller <davem@davemloft.net> Make the return value a constant and limit the return value to a 32 bit value. When the max timeout value is returned, we can safely stop the tick timer device. The max jiffies delta results in a 12 days timeout for HZ=1000. In the long term the get_next_timer_interrupt() code needs to be reworked to return ktime instead of jiffies, but we have to wait until the last users of the original NO_IDLE_HZ code are converted. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>	2007-05-29 18:11:10 -07:00
Venki Pallipadi	6e453a6751	Add support for deferrable timers ... Introduce a new flag for timers - deferrable: Timers that work normally when system is busy. But, will not cause CPU to come out of idle (just to service this timer), when CPU is idle. Instead, this timer will be serviced when CPU eventually wakes up with a subsequent non-deferrable timer. The main advantage of this is to avoid unnecessary timer interrupts when CPU is idle. If the routine currently called by a timer can wait until next event without any issues, this new timer can be used to setup timer event for that routine. This, with dynticks, allows CPUs to be lazy, allowing them to stay in idle for extended period of time by reducing unnecesary wakeup and thereby reducing the power consumption. This patch: Builds this new timer on top of existing timer infrastructure. It uses last bit in 'base' pointer of timer_list structure to store this deferrable timer flag. __next_timer_interrupt() function skips over these deferrable timers when CPU looks for next timer event for which it has to wake up. This is exported by a new interface init_timer_deferrable() that can be called in place of regular init_timer(). [akpm@linux-foundation.org: Privatise a #define] Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Oleg Nesterov <oleg@tv-sign.ru> Cc: Dave Jones <davej@codemonkey.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>	2007-05-08 11:15:05 -07:00