Paul E. McKenney cba8244a0f rcu: Add debug check for too many rcu_read_unlock() ...

TREE_PREEMPT_RCU maintains an rcu_read_lock_nesting counter in
the task structure, which happens to be a signed int.  So this
patch adds a check for this counter being negative at the end of
__rcu_read_unlock(). This check is under CONFIG_PROVE_LOCKING,
so can be thought of as being part of lockdep.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: laijs@cn.fujitsu.com
Cc: dipankar@in.ibm.com
Cc: mathieu.desnoyers@polymtl.ca
Cc: josh@joshtriplett.org
Cc: dvhltc@us.ibm.com
Cc: niv@us.ibm.com
Cc: peterz@infradead.org
Cc: rostedt@goodmis.org
Cc: Valdis.Kletnieks@vt.edu
Cc: dhowells@redhat.com
LKML-Reference: <12626498423064-git-send-email->
Signed-off-by: Ingo Molnar <mingo@elte.hu>

2010-01-13 09:06:06 +01:00

..

gcov

microblaze: Enable GCOV_PROFILE_ALL

2009-09-21 14:29:21 +02:00

irq

genirq: Convert irq_desc.lock to raw_spinlock

2009-12-14 23:55:33 +01:00

power

vt: introduce and use vt_kmsg_redirect() function

2009-12-15 08:53:28 -08:00

time

Revert "time: Remove xtime_cache"

2009-12-22 14:10:37 -08:00

trace

Merge branch 'tracing-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

2009-12-31 11:52:01 -08:00

.gitignore

…

acct.c

bsdacct: fix uid/gid misreporting

2009-12-15 08:53:10 -08:00

async.c

…

audit_tree.c

fix more leaks in audit_tree.c tag_chunk()

2009-12-19 09:27:43 -08:00

audit_watch.c

Audit: reorganize struct audit_watch to save 8 bytes

2009-09-24 03:50:25 -04:00

audit.c

Audit: send signal info if selinux is disabled

2009-09-24 03:50:26 -04:00

audit.h

…

auditfilter.c

…

auditsc.c

Sanitize f_flags helpers

2009-12-22 12:27:34 -05:00

backtracetest.c

…

bounds.c

kbuild: move bounds.h to include/generated

2009-12-12 13:08:14 +01:00

capability.c

remove CONFIG_SECURITY_FILE_CAPABILITIES compile option

2009-11-24 15:06:47 +11:00

cgroup_freezer.c

cgroups: let ss->can_attach and ss->attach do whole threadgroups at a time

2009-09-24 07:20:58 -07:00

cgroup.c

cgroups: fix 2.6.32 regression causing BUG_ON() in cgroup_diput()

2010-01-11 09:34:05 -08:00

compat.c

…

configs.c

…

cpu.c

sched: Fix set_cpu_active() in cpu_down()

2009-12-16 19:01:53 +01:00

cpuset.c

sched: Fix balance vs hotplug race

2009-12-06 21:10:56 +01:00

cred-internals.h

…

cred.c

creds_are_invalid() needs to be exported for use by modules:

2009-09-23 11:02:26 -07:00

delayacct.c

headers: taskstats_kern.h trim

2009-09-18 09:48:52 -07:00

dma.c

…

exec_domain.c

…

exit.c

do_wait() optimization: do not place sub-threads on task_struct->children list

2009-12-17 15:45:31 -08:00

extable.c

…

fork.c

do_wait() optimization: do not place sub-threads on task_struct->children list

2009-12-17 15:45:31 -08:00

freezer.c

…

futex_compat.c

…

futex.c

rtmutes: Convert rtmutex.lock to raw_spinlock

2009-12-14 23:55:33 +01:00

groups.c

…

hrtimer.c

hrtimers: Convert to raw_spinlocks

2009-12-14 23:55:34 +01:00

hung_task.c

softlockup: Fix hung_task_check_count sysctl

2009-11-27 06:21:57 +01:00

hw_breakpoint.c

Merge branch 'tracing-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

2009-12-31 11:52:01 -08:00

itimer.c

itimers: Fix racy writes to cpu_itimer fields

2009-11-18 16:32:12 +01:00

kallsyms.c

hw-breakpoints: Fix broken hw-breakpoint sample module

2009-11-10 11:23:29 +01:00

Kconfig.freezer

…

Kconfig.hz

…

Kconfig.locks

mutex: Better control mutex adaptive spinning config

2009-12-03 11:50:11 +01:00

Kconfig.preempt

…

kexec.c

Merge branch 'for-33' of git://repo.or.cz/linux-kbuild

2009-12-17 07:23:42 -08:00

kfifo.c

kfifo: add record handling functions

2009-12-22 14:17:56 -08:00

kgdb.c

kgdb: Always process the whole breakpoint list on activate or deactivate

2009-12-11 08:43:20 -06:00

kmod.c

kmod: fix resource leak in call_usermodehelper_pipe()

2010-01-11 09:34:04 -08:00

kprobes.c

kprobes: Fix distinct type warning

2009-12-28 10:25:31 +01:00

ksysfs.c

kexec: premit reduction of the reserved memory size

2009-12-16 07:20:13 -08:00

kthread.c

sched: Move kthread_bind() back to kthread.c

2009-12-16 19:01:57 +01:00

latencytop.c

…

lockdep_internals.h

…

lockdep_proc.c

seq_file: constify seq_operations

2009-09-23 07:39:29 -07:00

lockdep_states.h

…

lockdep.c

locking: Convert __raw_spin* functions to arch_spin*

2009-12-14 23:55:32 +01:00

Makefile

Merge branch 'kvm-updates/2.6.33' of git://git.kernel.org/pub/scm/virt/kvm/kvm

2009-12-08 08:02:38 -08:00

module.c

modules: Skip empty sections when exporting section notes

2010-01-06 01:11:29 -08:00

mutex-debug.c

headers: remove sched.h from interrupt.h

2009-10-11 11:20:58 -07:00

mutex-debug.h

locking: Implement new raw_spinlock

2009-12-14 23:55:32 +01:00

mutex.c

mutex: Better control mutex adaptive spinning config

2009-12-03 11:50:11 +01:00

mutex.h

…

notifier.c

kprobes: Fix to add __kprobes to notify_die

2009-08-30 03:08:26 +02:00

ns_cgroup.c

cgroups: let ss->can_attach and ss->attach do whole threadgroups at a time

2009-09-24 07:20:58 -07:00

nsproxy.c

…

panic.c

Merge git://git.infradead.org/mtd-2.6

2009-12-16 10:23:43 -08:00

params.c

tree-wide: convert open calls to remove spaces to skip_spaces() lib function

2009-12-15 08:53:32 -08:00

perf_event.c

Merge branch 'perf-fixes-for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

2009-12-31 11:56:24 -08:00

pid_namespace.c

pidns: deny CLONE_PARENT|CLONE_NEWPID combination

2009-09-24 07:21:04 -07:00

pid.c

pid: reduce code size by using a pointer to iterate over array

2009-12-16 07:20:12 -08:00

pm_qos_params.c

pm_qos: clean up racy global "name" variable

2009-10-14 15:31:10 +02:00

posix-cpu-timers.c

posix-cpu-timers: optimize and document timer_create callback

2009-11-18 12:36:05 +01:00

posix-timers.c

time: Introduce CLOCK_REALTIME_COARSE

2009-08-21 21:43:46 +02:00

printk.c

printk: fix new kernel-doc warnings

2009-12-17 15:45:32 -08:00

profile.c

kernel/profile.c: Switch /proc/irq/prof_cpu_mask to seq_file

2009-09-20 20:15:40 +02:00

ptrace.c

ptrace: __ptrace_detach: do __wake_up_parent() if we reap the tracee

2009-09-24 07:20:59 -07:00

rcupdate.c

rcu: Re-arrange code to reduce #ifdef pain

2009-11-22 18:58:16 +01:00

rcutiny.c

rcu: Eliminate unneeded function wrapping

2009-11-22 18:58:16 +01:00

rcutorture.c

rcu: Add force_quiescent_state() testing to rcutorture

2010-01-13 09:06:05 +01:00

rcutree_plugin.h

rcu: Add debug check for too many rcu_read_unlock()

2010-01-13 09:06:06 +01:00

rcutree_trace.c

rcu: Add expedited grace-period support for preemptible RCU

2009-12-03 11:35:25 +01:00

rcutree.c

rcu: Add force_quiescent_state() testing to rcutorture

2010-01-13 09:06:05 +01:00

rcutree.h

rcu: Make force_quiescent_state() start grace period if needed

2010-01-13 09:06:05 +01:00

relay.c

const: constify remaining pipe_buf_operations

2009-12-16 07:20:05 -08:00

res_counter.c

memcg: some modification to softlimit under hierarchical memory reclaim.

2009-10-01 16:11:13 -07:00

resource.c

resources: fix call to alignf() in allocate_resource()

2009-12-21 10:42:29 -08:00

rtmutex_common.h

…

rtmutex-debug.c

sched: Convert pi_lock to raw_spinlock

2009-12-14 23:55:33 +01:00

rtmutex-debug.h

…

rtmutex-tester.c

…

rtmutex.c

rtmutes: Convert rtmutex.lock to raw_spinlock

2009-12-14 23:55:33 +01:00

rtmutex.h

…

rwsem.c

…

sched_clock.c

sched: Fix cpu_clock() in NMIs, on !CONFIG_HAVE_UNSTABLE_SCHED_CLOCK

2009-12-15 09:04:36 +01:00

sched_cpupri.c

sched: Convert cpupri lock to raw_spinlock

2009-12-14 23:55:33 +01:00

sched_cpupri.h

sched: Convert cpupri lock to raw_spinlock

2009-12-14 23:55:33 +01:00

sched_debug.c

sched: Convert rq->lock to raw_spinlock

2009-12-14 23:55:33 +01:00

sched_fair.c

sched: Remove the cfs_rq dependency from set_task_cpu()

2009-12-16 19:01:58 +01:00

sched_features.h

sched: Discard some old bits

2009-12-09 10:03:07 +01:00

sched_idletask.c

sched: Restore printk sanity

2009-12-20 19:05:02 +01:00

sched_rt.c

sched: Add pre and post wakeup hooks

2009-12-16 19:01:58 +01:00

sched_stats.h

…

sched.c

sched: Revert 738d2be, simplify set_task_cpu()

2009-12-23 10:04:10 +01:00

seccomp.c

…

semaphore.c

…

signal.c

kernel/signal.c: fix kernel information leak with print-fatal-signals=1

2010-01-11 09:34:05 -08:00

slow-work-debugfs.c

SLOW_WORK: Move slow_work's proc file to debugfs

2009-12-01 08:20:31 -08:00

slow-work.c

Merge git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/sysctl-2.6

2009-12-08 07:38:50 -08:00

slow-work.h

SLOW_WORK: Move slow_work's proc file to debugfs

2009-12-01 08:20:31 -08:00

smp.c

Merge branch 'core-locking-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

2009-12-15 09:02:01 -08:00

softirq.c

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu

2009-12-14 09:58:24 -08:00

softlockup.c

percpu: make percpu symbols under kernel/ and mm/ unique

2009-10-29 22:34:13 +09:00

spinlock.c

locking: Cleanup the name space completely

2009-12-14 23:55:33 +01:00

srcu.c

rcu: Add synchronize_srcu_expedited()

2009-10-26 09:40:30 +01:00

stacktrace.c

…

stop_machine.c

…

sys_ni.c

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6

2009-12-08 07:55:01 -08:00

sys.c

Merge branch 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

2009-12-19 09:47:34 -08:00

sysctl_binary.c

SYSCTL: Print binary sysctl warnings (nearly) only once

2009-12-23 21:00:20 +01:00

sysctl_check.c

ipv4 05/05: add sysctl to accept packets with local source addresses

2009-12-03 12:14:38 -08:00

sysctl.c

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6

2009-12-17 16:58:26 -08:00

taskstats.c

…

test_kprobes.c

…

time.c

Revert "time: Remove xtime_cache"

2009-12-22 14:10:37 -08:00

timeconst.pl

…

timer.c

timers: Remove duplicate setting of new_base in __mod_timer()

2009-12-17 01:30:49 +01:00

tracepoint.c

trivial: fix typo "to to" in multiple files

2009-09-21 15:14:55 +02:00

tsacct.c

…

uid16.c

headers: utsname.h redux

2009-09-23 18:13:10 -07:00

up.c

…

user_namespace.c

…

user-return-notifier.c

core: Clean up user return notifers use of per_cpu

2009-12-02 10:22:59 +01:00

user.c

uids: Prevent tear down race

2009-11-02 16:02:39 +01:00

utsname_sysctl.c

sysctl kernel: Remove binary sysctl logic

2009-11-12 02:04:55 -08:00

utsname.c

…

wait.c

…

workqueue.c

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq

2009-12-10 09:35:44 -08:00