Lai Jiangshan a6bebbc87a [PATCH] signal, procfs: some lock_task_sighand() users do not need rcu_read_lock() ...

lock_task_sighand() make sure task->sighand is being protected,
so we do not need rcu_read_lock().
[ exec() will get task->sighand->siglock before change task->sighand! ]

But code using rcu_read_lock() _just_ to protect lock_task_sighand()
only appear in procfs. (and some code in procfs use lock_task_sighand()
without such redundant protection.)

Other subsystem may put lock_task_sighand() into rcu_read_lock()
critical region, but these rcu_read_lock() are used for protecting
"for_each_process()", "find_task_by_vpid()" etc. , not for protecting
lock_task_sighand().

Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
[ok from Oleg]
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>

2008-10-10 04:18:57 +04:00

..

irq

genirq: switch /proc/irq/*/smp_affinity et al to seqfiles

2008-08-12 16:07:30 -07:00

power

ftrace: disable tracing for hibernation

2008-08-28 12:27:39 -07:00

time

clockevents: check broadcast tick device not the clock events device

2008-10-04 10:51:07 +02:00

trace

hrtimer: prevent migration of per CPU hrtimers

2008-09-29 17:09:14 +02:00

.gitignore

Update kernel/.gitignore with new auto-generated files

2008-02-09 23:27:01 -08:00

acct.c

bsdacct: fix and add comments around acct_process()

2008-07-25 10:53:47 -07:00

audit_tree.c

[PATCH] list_for_each_rcu must die: audit

2008-05-17 03:30:23 -04:00

audit.c

[PATCH] Fix the bug of using AUDIT_STATUS_RATE_LIMIT when set fail, no error output.

2008-08-01 12:15:16 -04:00

audit.h

[PATCH 1/2] audit: move extern declarations to audit.h

2008-04-28 06:28:04 -04:00

auditfilter.c

Re: [PATCH] the loginuid field should be output in all AUDIT_CONFIG_CHANGE audit messages

2008-08-01 12:15:03 -04:00

auditsc.c

[PATCH] audit: Moved variable declaration to beginning of function

2008-09-01 23:06:45 -04:00

backtracetest.c

backtrace: replace timer with tasklet + completions

2008-06-27 18:09:16 +02:00

bounds.c

Add kbuild.h that contains common definitions for kbuild users

2008-04-29 08:06:29 -07:00

capability.c

security: Fix setting of PF_SUPERPRIV by __capable()

2008-08-14 22:59:43 +10:00

cgroup_debug.c

CGroup API files: move "releasable" to cgroup_debug subsystem

2008-04-29 08:06:09 -07:00

cgroup.c

mm owner: fix race between swapoff and exit

2008-09-29 08:41:47 -07:00

compat.c

ntp: support for TAI

2008-05-01 08:03:59 -07:00

configs.c

kernel: use non-racy method for proc entries creation

2008-04-29 08:06:22 -07:00

cpu.c

cpu hotplug: s390 doesn't support additional_cpus anymore.

2008-08-12 16:07:28 -07:00

cpuset.c

cpuset: avoid changing cpuset's cpus when -errno returned

2008-09-13 14:41:50 -07:00

delayacct.c

per-task-delay-accounting: update taskstats for memory reclaim delay

2008-07-25 10:53:47 -07:00

dma-coherent.c

DMA: make dma-coherent.c documentation kdoc-friendly

2008-08-07 06:52:01 -07:00

dma.c

kernel: use non-racy method for proc entries creation

2008-04-29 08:06:22 -07:00

exec_domain.c

[PATCH] kill altroot

2008-07-26 20:53:20 -04:00

exit.c

mm owner: fix race between swapoff and exit

2008-09-29 08:41:47 -07:00

extable.c

module: Don't report discarded init pages as kernel text.

2008-01-29 17:13:18 +11:00

fork.c

mmu-notifiers: core

2008-07-28 16:30:21 -07:00

futex_compat.c

futex_compat __user annotation

2008-03-30 14:18:41 -07:00

futex.c

futexes: fix fault handling in futex_lock_pi

2008-06-23 13:31:15 +02:00

hrtimer.c

hrtimer: prevent migration of per CPU hrtimers

2008-09-29 17:09:14 +02:00

itimer.c

ITIMER_REAL: convert to use struct pid

2008-02-08 09:22:29 -08:00

kallsyms.c

kallsyms: fix potential overflow in binary search

2008-07-25 10:53:27 -07:00

Kconfig.hz

sched: fix SCHED_HRTICK dependency

2008-07-28 14:37:38 +02:00

Kconfig.preempt

rcu: move PREEMPT_RCU config option back under PREEMPT

2008-03-10 18:01:20 -07:00

kexec.c

kexec: fix segmentation fault in kimage_add_entry

2008-09-23 08:09:14 -07:00

kfifo.c

is_power_of_2: kernel/kfifo.c

2007-07-16 09:05:50 -07:00

kgdb.c

kgdb: call touch_softlockup_watchdog on resume

2008-10-06 13:50:59 -05:00

kmod.c

call_usermodehelper(): increase reliability

2008-07-25 10:53:28 -07:00

kprobes.c

kprobes: remove redundant config check

2008-07-25 10:53:30 -07:00

ksysfs.c

Kobject: convert remaining kobject_unregister() to kobject_put()

2008-01-24 20:40:40 -08:00

kthread.c

tracehook: wait_task_inactive

2008-07-26 12:00:09 -07:00

latencytop.c

kernel: use non-racy method for proc entries creation

2008-04-29 08:06:22 -07:00

lockdep_internals.h

lockdep: build fix

2008-08-13 12:55:10 +02:00

lockdep_proc.c

lockstat: fix numerical output rounding error

2008-08-26 10:37:46 +02:00

lockdep.c

lockdep: fix invalid list_del_rcu in zap_class

2008-08-27 08:40:36 +02:00

Makefile

Merge branch 'linus' into core/generic-dma-coherent

2008-07-29 00:07:55 +02:00

marker.c

markers: fix markers read barrier for multiple probes

2008-07-30 09:41:45 -07:00

module.c

[module] Don't let gcc inline load_module()

2008-08-25 11:10:26 -07:00

mutex-debug.c

mutex-debug: check mutex magic before owner

2008-05-16 16:53:35 +02:00

mutex-debug.h

[PATCH] lockdep: better lock debugging

2006-07-03 15:27:01 -07:00

mutex.c

locking: fix mutex @key parameter kernel-doc notation

2008-07-28 18:12:36 +02:00

mutex.h

[PATCH] lockdep: prove mutex locking correctness

2006-07-03 15:27:04 -07:00

notifier.c

ipc: re-enable msgmni automatic recomputing msgmni if set to negative

2008-04-29 08:06:13 -07:00

ns_cgroup.c

cgroup_clone: use pid of newly created task for new cgroup

2008-07-25 10:53:37 -07:00

nsproxy.c

removed unused #include <linux/version.h>'s

2008-08-23 12:14:12 -07:00

panic.c

Add a WARN() macro; this is WARN_ON() + printk arguments

2008-07-25 10:53:29 -07:00

params.c

Add new string functions strict_strto* and convert kernel params to use them

2008-02-08 09:22:41 -08:00

pid_namespace.c

pid_ns: (BUG 11391) change ->child_reaper when init->group_leader exits

2008-09-02 19:21:38 -07:00

pid.c

pidns: remove now unused find_pid function.

2008-07-25 10:53:45 -07:00

pm_qos_params.c

pm_qos_requirement might sleep

2008-09-02 19:21:40 -07:00

posix-cpu-timers.c

posix-timers: print RT watchdog message

2008-05-24 18:49:22 +02:00

posix-timers.c

fix error-path NULL deref in alloc_posix_timer()

2008-10-02 15:53:13 -07:00

printk.c

printk: fix comment for printk ratelimiting

2008-07-30 09:41:45 -07:00

profile.c

build kernel/profile.o only when requested

2008-07-25 10:53:27 -07:00

ptrace.c

security: Fix setting of PF_SUPERPRIV by __capable()

2008-08-14 22:59:43 +10:00

rcuclassic.c

stop_machine: Wean existing callers off stop_machine_run()

2008-07-28 12:16:31 +10:00

rcupdate.c

rcu: fix synchronize_rcu() so that kernel-doc works

2008-08-21 09:31:44 +02:00

rcupreempt_trace.c

rcu: remove duplicated include in kernel/rcupreempt_trace.c

2008-05-19 10:03:39 +02:00

rcupreempt.c

Merge branch 'linus' into cpus4096

2008-07-16 00:29:07 +02:00

rcutorture.c

rcu: make rcutorture even more vicious: invoke RCU readers from irq handlers (timers)

2008-06-26 09:24:33 +02:00

relay.c

relay: fix "full buffer with exactly full last subbuffer" accounting problem

2008-08-05 14:33:46 -07:00

res_counter.c

cgroup files: convert res_counter_write() to be a cgroups write_string() handler

2008-07-25 10:53:36 -07:00

resource.c

kernel/resource.c: fix new kernel-doc warning

2008-09-02 10:47:30 -07:00

rtmutex_common.h

Don't operate with pid_t in rtmutex tester

2008-02-08 09:22:41 -08:00

rtmutex-debug.c

Don't operate with pid_t in rtmutex tester

2008-02-08 09:22:41 -08:00

rtmutex-debug.h

[PATCH] lockdep: better lock debugging

2006-07-03 15:27:01 -07:00

rtmutex-tester.c

sysdev: Pass the attribute to the low level sysdev show/store function

2008-07-21 21:55:02 -07:00

rtmutex.c

hrtimer: more hrtimer_init_sleeper() fallout.

2008-02-13 15:45:36 +01:00

rtmutex.h

[PATCH] lockdep: better lock debugging

2006-07-03 15:27:01 -07:00

rwsem.c

sched: mark rwsem functions as __sched for wchan/profiling

2007-12-18 15:21:13 +01:00

sched_clock.c

sched_clock: fix cpu_clock()

2008-08-25 17:39:57 +02:00

sched_cpupri.c

sched: use a 2-d bitmap for searching lowest-pri CPU

2008-06-06 15:19:28 +02:00

sched_cpupri.h

sched: fix the cpuprio count really

2008-06-06 15:19:44 +02:00

sched_debug.c

[PATCH] signal, procfs: some lock_task_sighand() users do not need rcu_read_lock()

2008-10-10 04:18:57 +04:00

sched_fair.c

sched: fix mysql+oltp regression

2008-08-11 14:49:29 +02:00

sched_features.h

sched: enable LB_BIAS by default

2008-08-21 08:18:02 +02:00

sched_idletask.c

sched: make rt_sched_class, idle_sched_class static

2008-05-05 23:56:17 +02:00

sched_rt.c

sched: fix 2.6.27-rc5 couldn't boot on tulsa machine randomly

2008-09-11 09:34:28 +02:00

sched_stats.h

sched: fix accounting in task delay accounting & migration

2008-07-04 12:50:23 +02:00

sched.c

hrtimer: prevent migration of per CPU hrtimers

2008-09-29 17:09:14 +02:00

seccomp.c

make seccomp zerocost in schedule

2007-07-16 09:05:50 -07:00

semaphore.c

semaphore: __down_common: use signal_pending_state()

2008-08-05 14:33:47 -07:00

signal.c

tracehook: fix SA_NOCLDWAIT

2008-08-19 20:37:07 -07:00

smp.c

smp: have smp_call_function_single() detect invalid CPUs

2008-08-25 17:45:48 -07:00

softirq.c

Full conversion to early_initcall() interface, remove old interface

2008-07-26 12:00:04 -07:00

softlockup.c

softlockup: minor cleanup, don't check task->state twice

2008-09-02 10:49:51 -07:00

spinlock.c

lockdep: spin_lock_nest_lock(), checkpatch fixes

2008-08-13 13:56:51 +02:00

srcu.c

make srcu_readers_active() static

2008-02-06 10:41:02 -08:00

stacktrace.c

stacktrace: fix modular build, export print_stack_trace and save_stack_trace

2008-06-30 09:20:55 +02:00

stop_machine.c

stop_machine: remove unused variable

2008-08-12 17:52:55 +10:00

sys_ni.c

signalfd: fix undefined reference to `compat_sys_signalfd4' when !CONFIG_SIGNALFD

2008-07-25 11:35:41 -07:00

sys.c

fix setpriority(PRIO_PGRP) thread iterator breakage

2008-08-20 15:40:32 -07:00

sysctl_check.c

sysctl: check for bogus modes

2008-07-25 10:53:45 -07:00

sysctl.c

forgotten refcount on sysctl root table

2008-09-04 11:06:21 -07:00

taskstats.c

taskstats: remove initialization of static per-cpu variable

2008-07-25 10:53:47 -07:00

test_kprobes.c

kprobes: kretprobe user entry-handler

2008-02-06 10:41:11 -08:00

time.c

Make constants in kernel/timeconst.h fixed 64 bits

2008-05-02 16:18:42 -07:00

timeconst.pl

Make constants in kernel/timeconst.h fixed 64 bits

2008-05-02 16:18:42 -07:00

timer.c

Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm

2008-07-14 16:06:58 -07:00

tsacct.c

task IO accounting: move all IO statistics in struct task_io_accounting

2008-07-27 16:12:28 -07:00

uid16.c

asmlinkage_protect replaces prevent_tail_call

2008-04-10 17:28:26 -07:00

user_namespace.c

removed unused #include <linux/version.h>'s

2008-08-23 12:14:12 -07:00

user.c

alloc_uid: cleanup

2008-04-30 08:29:53 -07:00

utsname_sysctl.c

removed unused #include <linux/version.h>'s

2008-08-23 12:14:12 -07:00

utsname.c

removed unused #include <linux/version.h>'s

2008-08-23 12:14:12 -07:00

wait.c

kernel: remove fastcall in kernel/*

2008-02-08 09:22:31 -08:00

workqueue.c

Merge branch 'core/locking' into core/urgent

2008-08-12 00:11:49 +02:00