Michel Lespinasse 8fe8f545c6 futex: Update futex_wait_setup comments about locking ...

Reviving a cleanup I had done about a year ago as part of a larger
futex_set_wait proposal. Over the years, the locking of the hashed
futex queue got improved, so that some of the "rare but normal" race
conditions described in comments can't actually happen anymore.

Signed-off-by: Michel Lespinasse <walken@google.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Darren Hart <dvhltc@us.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
LKML-Reference: <20110307020750.GA31188@google.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

2011-03-10 19:56:18 +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

Merge branch 'fixes-2.6.38' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq

2011-02-18 12:36:06 -08:00

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

kbuild: move bounds.h to include/generated

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

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

headers: taskstats_kern.h trim

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

dma.c

…

elfcore.c

elf coredump: add extended numbering support

2010-03-06 11:26:46 -08:00

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

futex: Update futex_wait_setup comments about locking

2011-03-10 19:56:18 +01:00

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

itimers: Fix racy writes to cpu_itimer fields

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

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

mutex: Better control mutex adaptive spinning config

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

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

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

mutexes, sched: Introduce arch_mutex_cpu_relax()

2010-11-26 15:05:34 +01:00

mutex.h

…

notifier.c

sched: Use lockdep-based checking on rcu_dereference()

2010-02-25 10:34:26 +01:00

ns_cgroup.c

cgroup: notify ns_cgroup deprecated

2010-10-27 18:03:09 -07:00

nsproxy.c

include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h

2010-03-30 22:02:32 +09:00

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

include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h

2010-03-30 22:02:32 +09:00

pid.c

Add RCU check for find_task_by_vpid().

2010-08-19 17:18:02 -07:00

pm_qos_params.c

PM / PM QoS: Fix reversed min and max

2010-11-15 22:45:22 +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

include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h

2010-03-30 22:02:32 +09:00

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

sched: Convert pi_lock to raw_spinlock

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

rtmutex-debug.h

…

rtmutex-tester.c

rtmutex-tester: make it build without BKL

2010-10-19 11:29:56 +02:00

rtmutex.c

rtmutes: Convert rtmutex.lock to raw_spinlock

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

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 update_curr_rt()

2011-02-03 12:21:33 +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

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

2011-01-20 16:37:55 -08:00

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

locking: Cleanup the name space completely

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

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

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

2011-01-26 16:31:44 +10:00

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

headers: utsname.h redux

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

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

core: Clean up user return notifers use of per_cpu

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

user.c

fix freeing user_struct in user cache

2010-12-29 11:31:38 -08:00

utsname_sysctl.c

sysctl kernel: Remove binary sysctl logic

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

utsname.c

utsns: extract creeate_uts_ns()

2009-06-18 13:03:55 -07:00

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