Oleg Nesterov 36b2f04600 posix-timers: sys_timer_create: simplify and s/tasklist/rcu/ ... - Change the code to do rcu_read_lock() instead of taking tasklist_lock, it is safe to get_task_struct(p) if p was found under RCU. However, now we must not use process's sighand/signal, they may be NULL. We can use current->sighand/signal instead, this "process" must belong to the current's thread-group. - Factor out the common code for 2 "if (timer_event_spec)" branches, the !timer_event_spec case can use current too. - use spin_lock_irq() instead of _irqsave(), kill "flags". Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru> Cc: mingo@elte.hu Cc: Roland McGrath <roland@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>		2008-09-24 15:45:48 +02:00
..
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: remove WARN_ON which was used to gather information	2008-09-09 22:20:01 +02:00
trace	Merge branch 'linus' into cpus4096	2008-07-28 23:32:00 +02:00
.gitignore
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
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
capability.c	security: Fix setting of PF_SUPERPRIV by __capable()	2008-08-14 22:59:43 +10:00
cgroup_debug.c
cgroup.c	cgroup: uninline cgroup_has_css_refs()	2008-07-30 09:41:44 -07:00
compat.c	timers: fix itimer/many thread hang	2008-09-14 16:25:35 +02:00
configs.c
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
exec_domain.c	[PATCH] kill altroot	2008-07-26 20:53:20 -04:00
exit.c	timers: fix itimer/many thread hang	2008-09-14 16:25:35 +02:00
extable.c
fork.c	timers: fix itimer/many thread hang, v2	2008-09-23 13:38:44 +02:00
futex_compat.c
futex.c	futexes: fix fault handling in futex_lock_pi	2008-06-23 13:31:15 +02:00
hrtimer.c	Merge branch 'generic-ipi' into generic-ipi-for-linus	2008-07-15 21:55:59 +02:00
itimer.c	timers: fix itimer/many thread hang	2008-09-14 16:25:35 +02:00
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
kexec.c	kexec: use a mutex for locking rather than xchg()	2008-08-15 08:35:43 -07:00
kfifo.c
kgdb.c	kgdb: fix gdb serial thread queries	2008-08-01 08:39:35 -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
kthread.c	tracehook: wait_task_inactive	2008-07-26 12:00:09 -07:00
latencytop.c
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
mutex.c	locking: fix mutex @key parameter kernel-doc notation	2008-07-28 18:12:36 +02:00
mutex.h
notifier.c
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
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	timers: fix itimer/many thread hang, v2	2008-09-23 13:38:44 +02:00
posix-timers.c	posix-timers: sys_timer_create: simplify and s/tasklist/rcu/	2008-09-24 15:45:48 +02:00
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
rtmutex-debug.c
rtmutex-debug.h
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
rtmutex.h
rwsem.c
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	sched: add full schedstats to /proc/sched_debug	2008-06-27 14:31:31 +02:00
sched_fair.c	timers: fix itimer/many thread hang	2008-09-14 16:25:35 +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	timers: fix itimer/many thread hang	2008-09-14 16:25:35 +02:00
sched_stats.h	timers: fix itimer/many thread hang, v2	2008-09-23 13:38:44 +02:00
sched.c	timers: fix itimer/many thread hang, v2	2008-09-23 13:38:44 +02:00
seccomp.c
semaphore.c	semaphore: __down_common: use signal_pending_state()	2008-08-05 14:33:47 -07:00
signal.c	timers: fix itimer/many thread hang	2008-09-14 16:25:35 +02:00
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
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	timers: fix itimer/many thread hang	2008-09-14 16:25:35 +02:00
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
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
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
workqueue.c	Merge branch 'core/locking' into core/urgent	2008-08-12 00:11:49 +02:00