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Thomas Renninger f9b9e806ae PM QoS: Make pm_qos settings readable 
I have a machine where entering deep C-states broke.
pm_qos was a hot candidate, but I couldn't find any way to double
check without the need of recompiling.

While in this case it was a driver bug (ath9k):
https://bugzilla.kernel.org/show_bug.cgi?id=27532

powertop or others may want to read out cpu_dma_latency
restrictions which could be the cause of preventing a machine
entering deeper C-states.

Output with this patch:

# default value of 2000 * USEC_PER_SEC (0x77359400)
cat /dev/network_latency |hexdump
0000000 9400 7735
0000004

# value of 55 us which is the reason for not entering C2
cat /dev/cpu_dma_latency |hexdump
0000000 0037 0000
0000004

There is no reason to hide this info -> make pm_qos files readable.

Signed-off-by: Thomas Renninger <trenn@suse.de>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
2011-03-15 00:43:18 +01:00
..
debug
Merge branch 'master' into for-next
2010-12-22 18:57:02 +01:00
gcov
llseek: automatically add .llseek fop
2010-10-15 15:53:27 +02:00
irq
genirq: Disable the SHIRQ_DEBUG call in request_threaded_irq for now
2011-02-19 12:11:13 +01:00
power
PM: Simplify kernel/power/Kconfig
2011-03-15 00:43:17 +01:00
time
clockevents: Prevent oneshot mode when broadcast device is periodic
2011-02-26 09:45:28 +01:00
trace
blktrace: Remove blk_fill_rwbs_rq.
2011-03-03 10:53:20 -05:00
.gitignore
…
acct.c
pass a struct path to vfs_statfs
2010-08-09 16:48:42 -04:00
async.c
async: use workqueue for worker pool
2010-07-14 11:29:46 +02:00
audit_tree.c
in untag_chunk() we need to do alloc_chunk() a bit earlier
2010-10-30 02:18:32 -04:00
audit_watch.c
audit: make functions static
2010-10-30 01:42:19 -04:00
audit.c
audit: error message typo correction
2010-11-03 13:49:58 -04:00
audit.h
audit: make functions static
2010-10-30 01:42:19 -04:00
auditfilter.c
Audit: add support to match lsm labels on user audit messages
2010-10-30 01:41:57 -04:00
auditsc.c
audit mmap
2010-10-30 08:45:43 -04:00
backtracetest.c
…
bounds.c
…
capability.c
security: add cred argument to security_capable()
2011-02-11 17:41:58 +11:00
cgroup_freezer.c
cgroup_freezer: update_freezer_state() does incorrect state transitions
2010-10-27 18:03:08 -07:00
cgroup.c
Merge branch 'vfs-scale-working' of git://git.kernel.org/pub/scm/linux/kernel/git/npiggin/linux-npiggin
2011-01-14 09:08:29 -08:00
compat.c
compat: Make compat_alloc_user_space() incorporate the access_ok()
2010-09-14 16:08:45 -07:00
configs.c
llseek: automatically add .llseek fop
2010-10-15 15:53:27 +02:00
cpu.c
Merge branches 'x86-alternatives-for-linus', 'x86-fpu-for-linus', 'x86-hwmon-for-linus', 'x86-paravirt-for-linus', 'core-locking-for-linus' and 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
2011-01-06 11:11:50 -08:00
cpuset.c
cpuset: add a missing unlock in cpuset_write_resmask()
2011-03-04 17:53:38 -08:00
cred.c
CRED: Fix memory and refcount leaks upon security_prepare_creds() failure
2011-02-07 14:04:00 -08:00
delayacct.c
…
dma.c
…
elfcore.c
…
exec_domain.c
sys_personality: remove the bogus checks in sys_personality()->__set_personality() path
2010-08-09 20:45:05 -07:00
exit.c
Merge branch 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
2011-01-11 11:02:13 -08:00
extable.c
…
fork.c
thp: khugepaged
2011-01-13 17:32:43 -08:00
freezer.c
Freezer: Fix a race during freezing of TASK_STOPPED tasks
2010-12-24 15:02:40 +01:00
futex_compat.c
futex: Address compiler warnings in exit_robust_list
2010-11-10 13:27:50 +01:00
futex.c
Merge branches 'core-fixes-for-linus', 'x86-fixes-for-linus', 'timers-fixes-for-linus' and 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
2011-01-15 12:45:00 -08:00
groups.c
kernel/groups.c: fix integer overflow in groups_search
2010-09-09 18:57:24 -07:00
hrtimer.c
Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
2011-01-13 10:05:56 -08:00
hung_task.c
lockup detector: Fix grammar by adding a missing "to" in the comments
2010-08-17 09:11:52 +02:00
hw_breakpoint.c
perf: Dynamic pmu types
2010-12-16 11:36:43 +01:00
irq_work.c
irq_work: Use per cpu atomics instead of regular atomics
2010-12-18 15:54:48 +01:00
itimer.c
…
jump_label.c
jump label: Make arch_jump_label_text_poke_early() optional
2010-10-29 12:56:13 -04:00
kallsyms.c
Revert "kernel: make /proc/kallsyms mode 400 to reduce ease of attacking"
2010-11-19 11:54:40 -08:00
Kconfig.freezer
…
Kconfig.hz
…
Kconfig.locks
…
Kconfig.preempt
…
kexec.c
tree-wide: fix comment/printk typos
2010-11-01 15:38:34 -04:00
kfifo.c
kfifo: fix scatterlist usage
2010-10-01 10:50:58 -07:00
kmod.c
Make do_execve() take a const filename pointer
2010-08-17 18:07:43 -07:00
kprobes.c
Merge branch 'for-2.6.38' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu
2011-01-07 17:02:58 -08:00
ksysfs.c
sysfs: add struct file* to bin_attr callbacks
2010-05-21 09:37:31 -07:00
kthread.c
sched: Constify function scope static struct sched_param usage
2011-01-07 15:55:45 +01:00
latencytop.c
fs/proc/base.c, kernel/latencytop.c: convert sprintf_symbol() to %ps
2011-01-13 08:03:16 -08:00
lockdep_internals.h
lockdep: No need to disable preemption in debug atomic ops
2010-05-04 05:38:16 +02:00
lockdep_proc.c
locking, lockdep: Convert sprintf_symbol to %pS
2010-11-10 10:23:58 +01:00
lockdep_states.h
…
lockdep.c
lockdep: Move early boot local IRQ enable/disable status to init/main.c
2011-01-20 13:32:33 +01:00
Makefile
kernel: clean up USE_GENERIC_SMP_HELPERS
2011-01-13 08:03:08 -08:00
module.c
tracepoints: Fix section alignment using pointer array
2011-02-03 09:28:46 -05:00
mutex-debug.c
…
mutex-debug.h
…
mutex.c
mutexes, sched: Introduce arch_mutex_cpu_relax()
2010-11-26 15:05:34 +01:00
mutex.h
…
notifier.c
…
ns_cgroup.c
cgroup: notify ns_cgroup deprecated
2010-10-27 18:03:09 -07:00
nsproxy.c
…
padata.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
2010-08-04 15:23:14 -07:00
panic.c
ACPI, APEI, Generic Hardware Error Source POLL/IRQ/NMI notification type support
2011-01-12 03:06:19 -05:00
params.c
module: show version information for built-in modules in sysfs
2011-01-24 14:32:51 +10:30
perf_event.c
perf: Fix throttle logic
2011-02-16 13:25:29 +01:00
pid_namespace.c
…
pid.c
Add RCU check for find_task_by_vpid().
2010-08-19 17:18:02 -07:00
pm_qos_params.c
PM QoS: Make pm_qos settings readable
2011-03-15 00:43:18 +01:00
posix-cpu-timers.c
posix-cpu-timers: Rcu_read_lock/unlock protect find_task_by_vpid call
2010-11-10 13:07:06 +01:00
posix-timers.c
posix-timers: Annotate lock_timer()
2010-10-21 17:30:06 +02:00
printk.c
cap_syslog: accept CAP_SYS_ADMIN for now
2011-02-10 17:53:55 -08:00
profile.c
llseek: automatically add .llseek fop
2010-10-15 15:53:27 +02:00
ptrace.c
Mark ptrace_{traceme,attach,detach} static
2011-03-04 09:23:30 -08:00
range.c
kernel/range.c: fix clean_sort_range() for the case of full array
2010-11-12 07:55:31 -08:00
rcupdate.c
Merge branch 'rcu/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-2.6-rcu into core/rcu
2010-10-07 09:43:11 +02:00
rcutiny_plugin.h
rcu: Distinguish between boosting and boosted
2010-11-29 22:01:56 -08:00
rcutiny.c
rcu: avoid pointless blocked-task warnings
2011-01-14 04:58:08 -08:00
rcutorture.c
rcu: add priority-inversion testing to rcutorture
2010-10-07 10:41:08 -07:00
rcutree_plugin.h
rcu: increase synchronize_sched_expedited() batching
2010-12-17 12:34:08 -08:00
rcutree_trace.c
rcu,cleanup: simplify the code when cpu is dying
2010-11-29 22:01:58 -08:00
rcutree.c
Merge branch 'for-2.6.38' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu
2011-01-07 17:02:58 -08:00
rcutree.h
rcu: limit rcu_node leaf-level fanout
2010-12-17 12:34:20 -08:00
relay.c
Clean up relay_alloc_page_array() slightly by using vzalloc rather than vmalloc and memset
2010-11-05 08:21:34 -07:00
res_counter.c
…
resource.c
resources: add arch hook for preventing allocation in reserved areas
2010-12-17 10:01:09 -08:00
rtmutex_common.h
…
rtmutex-debug.c
…
rtmutex-debug.h
…
rtmutex-tester.c
rtmutex-tester: make it build without BKL
2010-10-19 11:29:56 +02:00
rtmutex.c
…
rtmutex.h
…
rwsem.c
…
sched_autogroup.c
sched, autogroup: Fix CONFIG_RT_GROUP_SCHED sched_setscheduler() failure
2011-01-18 15:09:42 +01:00
sched_autogroup.h
sched, autogroup: Fix CONFIG_RT_GROUP_SCHED sched_setscheduler() failure
2011-01-18 15:09:42 +01:00
sched_clock.c
sched: Add some clock info to sched_debug
2010-11-23 10:29:08 +01:00
sched_cpupri.c
sched: No need for bootmem special cases
2010-07-17 12:06:22 +02:00
sched_cpupri.h
sched: No need for bootmem special cases
2010-07-17 12:06:22 +02:00
sched_debug.c
sched: Replace rq->bkl_count with rq->rq_sched_info.bkl_count
2011-01-18 15:09:43 +01:00
sched_fair.c
sched: Use rq->clock_task instead of rq->clock for correctly maintaining load averages
2011-01-26 12:31:03 +01:00
sched_features.h
sched: Rewrite tg_shares_up)
2010-11-18 13:27:46 +01:00
sched_idletask.c
sched: Cure load average vs NO_HZ woes
2010-04-23 11:02:02 +02:00
sched_rt.c
sched: Fix sched rt group scheduling when hierachy is enabled
2011-03-04 11:03:18 +01:00
sched_stats.h
sched_stat: Update sched_info_queue/dequeue() code comments
2010-10-24 13:29:01 +02:00
sched_stoptask.c
sched: Fix cross-sched-class wakeup preemption
2010-11-11 14:37:23 +01:00
sched.c
SUNRPC: Close a race in __rpc_wait_for_completion_task()
2011-03-10 15:04:52 -05:00
seccomp.c
…
semaphore.c
…
signal.c
signals: annotate lock context change on ptrace_stop()
2010-10-27 18:03:12 -07:00
smp.c
Merge branch 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
2011-01-20 18:30:37 -08:00
softirq.c
kernel: clean up USE_GENERIC_SMP_HELPERS
2011-01-13 08:03:08 -08:00
spinlock.c
…
srcu.c
rcu: demote SRCU_SYNCHRONIZE_DELAY from kernel-parameter status
2011-01-14 04:56:49 -08:00
stacktrace.c
…
stop_machine.c
stop_machine: convert cpu notifier to return encapsulate errno value
2010-10-26 16:52:15 -07:00
sys_ni.c
powerpc: define a compat_sys_recv cond_syscall
2010-09-23 17:03:55 +10:00
sys.c
Fix prlimit64 for suid/sgid processes
2011-01-31 13:01:27 +10:00
sysctl_binary.c
Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
2011-01-13 10:05:56 -08:00
sysctl_check.c
sysctl: min/max bounds are optional
2010-10-15 14:42:24 -07:00
sysctl.c
unfuck proc_sysctl ->d_compare()
2011-03-08 02:22:27 -05:00
taskstats.c
taskstats: use better ifdef for alignment
2011-01-13 08:03:19 -08:00
test_kprobes.c
kprobes: Fix selftest to clear flags field for reusing probes
2010-10-14 08:55:27 +02:00
time.c
Kill off a bunch of warning: ‘inline’ is not at beginning of declaration
2010-11-28 23:08:04 +01:00
timeconst.pl
…
timer.c
Revert "lockdep, timer: Fix del_timer_sync() annotation"
2011-02-08 16:18:39 +01:00
tracepoint.c
tracepoints: Fix section alignment using pointer array
2011-02-03 09:28:46 -05:00
tsacct.c
taskstats: use real microsecond granularity for CPU times
2010-10-27 18:03:17 -07:00
uid16.c
…
up.c
…
user_namespace.c
user_ns: improve the user_ns on-the-slab packaging
2011-01-13 08:03:18 -08:00
user-return-notifier.c
…
user.c
fix freeing user_struct in user cache
2010-12-29 11:31:38 -08:00
utsname_sysctl.c
…
utsname.c
…
wait.c
docbook: add more wait/wake/completion to device-drivers docbook
2010-10-26 17:32:41 -07:00
watchdog.c
watchdog, nmi: Lower the severity of error messages
2011-02-10 13:21:59 +01:00
workqueue_sched.h
workqueue: implement concurrency managed dynamic worker pool
2010-06-29 10:07:14 +02:00
workqueue.c
workqueue: make sure MAYDAY_INITIAL_TIMEOUT is at least 2 jiffies long
2011-02-16 18:10:19 +01:00