Paul E. McKenney 45f014c52e rcu: Remove redundant grace-period check ... The rcu_process_dyntick() function checks twice for the end of the current grace period. However, it holds the current rcu_node structure's ->lock field throughout, and doesn't get to the second call to rcu_gp_in_progress() unless there is at least one CPU corresponding to this rcu_node structure that has not yet checked in for the current grace period, which would prevent the current grace period from ending. So the current grace period cannot have ended, and the second check is redundant, so remove it. Also, given that this function is used even with !CONFIG_NO_HZ, its name is quite misleading. Change from rcu_process_dyntick() to force_qs_rnp(). 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: <1262646550562-git-send-email-> Signed-off-by: Ingo Molnar <mingo@elte.hu>		2010-01-13 09:06:04 +01:00
..
gcov
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.c
audit.h
audit_tree.c	fix more leaks in audit_tree.c tag_chunk()	2009-12-19 09:27:43 -08:00
audit_watch.c
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
cgroup.c	cgroups: fix 2.6.32 regression causing BUG_ON() in cgroup_diput()	2010-01-11 09:34:05 -08:00
cgroup_freezer.c
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
delayacct.c
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.c	rtmutes: Convert rtmutex.lock to raw_spinlock	2009-12-14 23:55:33 +01:00
futex_compat.c
groups.c
hrtimer.c	hrtimers: Convert to raw_spinlocks	2009-12-14 23:55:34 +01:00
hung_task.c
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
kallsyms.c
Kconfig.freezer
Kconfig.hz
Kconfig.locks
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.c	locking: Convert __raw_spin* functions to arch_spin*	2009-12-14 23:55:32 +01:00
lockdep_internals.h
lockdep_proc.c
lockdep_states.h
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
mutex-debug.h	locking: Implement new raw_spinlock	2009-12-14 23:55:32 +01:00
mutex.c
mutex.h
notifier.c
ns_cgroup.c
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.c	pid: reduce code size by using a pointer to iterate over array	2009-12-16 07:20:12 -08:00
pid_namespace.c
pm_qos_params.c
posix-cpu-timers.c
posix-timers.c
printk.c	printk: fix new kernel-doc warnings	2009-12-17 15:45:32 -08:00
profile.c
ptrace.c
rcupdate.c
rcutiny.c
rcutorture.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
rcutree.c	rcu: Remove redundant grace-period check	2010-01-13 09:06:04 +01:00
rcutree.h	rcu: Remove leg of force_quiescent_state() switch statement	2010-01-13 09:06:04 +01:00
rcutree_plugin.h
rcutree_trace.c
relay.c	const: constify remaining pipe_buf_operations	2009-12-16 07:20:05 -08:00
res_counter.c
resource.c	resources: fix call to alignf() in allocate_resource()	2009-12-21 10:42:29 -08:00
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
rtmutex_common.h
rwsem.c
sched.c	sched: Revert 738d2be, simplify set_task_cpu()	2009-12-23 10:04:10 +01:00
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
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.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
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
spinlock.c	locking: Cleanup the name space completely	2009-12-14 23:55:33 +01:00
srcu.c
stacktrace.c
stop_machine.c
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
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
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
sysctl_binary.c	SYSCTL: Print binary sysctl warnings (nearly) only once	2009-12-23 21:00:20 +01:00
sysctl_check.c
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
tsacct.c
uid16.c
up.c
user-return-notifier.c
user.c
user_namespace.c
utsname.c
utsname_sysctl.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