Paul E. McKenney de078d875c rcu: Need to update rnp->gpnum if preemptable RCU is to be reliable ... Without this patch, tasks preempted in RCU read-side critical sections can fail to block the grace period, given that rnp->gpnum is used to determine which rnp->blocked_tasks[] element the preempted task is enqueued on. Before the patch, rnp->gpnum is always zero, so preempted tasks are always enqueued on rnp->blocked_tasks[0], which is correct only when the current CPU has not checked into the current grace period and the grace-period number is even, or, similarly, if the current CPU -has- checked into the current grace period and the grace-period number is odd. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Acked-by: Steven Rostedt <rostedt@goodmis.org> Cc: laijs@cn.fujitsu.com Cc: dipankar@in.ibm.com Cc: akpm@linux-foundation.org Cc: mathieu.desnoyers@polymtl.ca Cc: josht@linux.vnet.ibm.com Cc: dvhltc@us.ibm.com Cc: niv@us.ibm.com Cc: peterz@infradead.org LKML-Reference: <12524504771622-git-send-email-> Signed-off-by: Ingo Molnar <mingo@elte.hu>		2009-09-18 00:04:54 +02:00
..
gcov	powerpc: Enable GCOV	2009-08-20 10:29:28 +10:00
irq	Merge branch 'irq-threaded-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2009-09-11 13:21:31 -07:00
power	PM: Trivial fixes	2009-09-14 20:26:59 +02:00
time	clockevent: Prevent dead lock on clockevents_lock	2009-08-19 18:15:10 +02:00
trace	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu	2009-09-15 09:39:44 -07:00
.gitignore	…
Kconfig.freezer	…
Kconfig.hz	…
Kconfig.preempt	…
Makefile	driver-core: move dma-coherent.c from kernel to driver/base	2009-09-15 09:50:47 -07:00
acct.c	bsdacct: switch credentials for writing to the accounting file	2009-08-24 11:33:40 +10:00
async.c	…
audit.c	…
audit.h	…
audit_tree.c	…
audit_watch.c	…
auditfilter.c	…
auditsc.c	…
backtracetest.c	…
bounds.c	…
capability.c	…
cgroup.c	writeback: add name to backing_dev_info	2009-09-11 09:20:26 +02:00
cgroup_debug.c	…
cgroup_freezer.c	…
compat.c	…
configs.c	…
cpu.c	Merge branch 'x86-pat-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2009-09-15 09:19:38 -07:00
cpuset.c	…
cred-internals.h	…
cred.c	CRED: Allow put_cred() to cope with a NULL groups list	2009-09-15 09:10:57 +10:00
delayacct.c	…
dma.c	…
exec_domain.c	…
exit.c	Merge branch 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2009-09-11 13:20:18 -07:00
extable.c	…
fork.c	Merge branch 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2009-09-11 13:20:18 -07:00
freezer.c	…
futex.c	Merge branch 'core-futexes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2009-09-11 13:16:22 -07:00
futex_compat.c	futex: Fix compat_futex to be same as futex for REQUEUE_PI	2009-08-10 15:41:12 +02:00
groups.c	…
hrtimer.c	pktgen: spin using hrtimer	2009-08-28 23:41:29 -07:00
hung_task.c	…
itimer.c	…
kallsyms.c	…
kexec.c	kexec: fix omitting offset in extended crashkernel syntax	2009-07-29 19:10:34 -07:00
kfifo.c	…
kgdb.c	…
kmod.c	Merge branch 'tracing-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2009-09-11 13:24:03 -07:00
kprobes.c	Merge branch 'linus' into tracing/core	2009-08-11 14:19:09 +02:00
ksysfs.c	…
kthread.c	sched: Keep kthreads at default priority	2009-09-09 17:30:06 +02:00
latencytop.c	…
lockdep.c	lockdep: Remove recursion stattistics	2009-08-29 13:22:36 +02:00
lockdep_internals.h	lockdep: BFS cleanup	2009-07-24 10:53:29 +02:00
lockdep_proc.c	Merge commit 'v2.6.31-rc8' into core/locking	2009-08-31 18:05:25 +02:00
lockdep_states.h	…
marker.c	…
module.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu	2009-09-15 09:39:44 -07:00
mutex-debug.c	…
mutex-debug.h	…
mutex.c	…
mutex.h	…
notifier.c	…
ns_cgroup.c	…
nsproxy.c	…
panic.c	trace: stop tracer in oops_enter()	2009-07-24 15:30:45 -04:00
params.c	…
perf_counter.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu	2009-09-15 09:39:44 -07:00
pid.c	…
pid_namespace.c	…
pm_qos_params.c	…
posix-cpu-timers.c	posix_cpu_timers_exit_group(): Do not use thread_group_cputimer()	2009-08-08 18:30:25 +02:00
posix-timers.c	posix-timers: Fix oops in clock_nanosleep() with CLOCK_MONOTONIC_RAW	2009-08-04 10:16:41 +02:00
printk.c	cleanup console_print()	2009-09-14 17:41:42 -07:00
profile.c	profile: suppress warning about large allocations when profile=1 is specified	2009-07-29 19:10:36 -07:00
ptrace.c	…
rcupdate.c	rcu: Delay rcu_barrier() wait until beginning of next CPU-hotunplug operation.	2009-08-19 13:58:54 +02:00
rcutorture.c	…
rcutree.c	rcu: Need to update rnp->gpnum if preemptable RCU is to be reliable	2009-09-18 00:04:54 +02:00
rcutree.h	rcu: Changes from reviews: avoid casts, fix/add warnings, improve comments	2009-08-29 15:34:40 +02:00
rcutree_plugin.h	rcu: Changes from reviews: avoid casts, fix/add warnings, improve comments	2009-08-29 15:34:40 +02:00
rcutree_trace.c	rcu: Merge preemptable-RCU functionality into hierarchical RCU	2009-08-23 10:32:40 +02:00
relay.c	…
res_counter.c	…
resource.c	…
rtmutex-debug.c	…
rtmutex-debug.h	…
rtmutex-tester.c	…
rtmutex.c	rtmutex: Avoid deadlock in rt_mutex_start_proxy_lock()	2009-08-06 05:50:21 +02:00
rtmutex.h	…
rtmutex_common.h	…
rwsem.c	…
sched.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu	2009-09-15 09:39:44 -07:00
sched_clock.c	…
sched_cpupri.c	sched: Add new prio to cpupri before removing old prio	2009-08-02 14:26:09 +02:00
sched_cpupri.h	…
sched_debug.c	sched: Provide iowait counters	2009-09-02 08:44:08 +02:00
sched_fair.c	sched: Fix sched::sched_stat_wait tracepoint field	2009-09-10 20:52:54 +02:00
sched_features.h	sched: Disable NEW_FAIR_SLEEPERS for now	2009-09-10 20:34:48 +02:00
sched_idletask.c	…
sched_rt.c	sched: Scale down cpu_power due to RT tasks	2009-09-04 10:09:55 +02:00
sched_stats.h	…
seccomp.c	…
semaphore.c	…
signal.c	do_sigaltstack: small cleanups	2009-08-01 11:18:56 -07:00
slow-work.c	…
smp.c	Merge branch 'x86/urgent' into x86/pat	2009-08-26 17:24:28 -07:00
softirq.c	rcu: Renamings to increase RCU clarity	2009-08-23 10:32:37 +02:00
softlockup.c	…
spinlock.c	locking: Allow arch-inlined spinlocks	2009-08-31 18:08:50 +02:00
srcu.c	…
stacktrace.c	…
stop_machine.c	…
sys.c	…
sys_ni.c	…
sysctl.c	block: fix linkage problem with blk_iopoll and !CONFIG_BLOCK	2009-09-15 21:53:11 +02:00
sysctl_check.c	…
taskstats.c	…
test_kprobes.c	…
time.c	…
timeconst.pl	…
timer.c	rcu: Simplify rcu_pending()/rcu_check_callbacks() API	2009-08-23 10:32:39 +02:00
tracepoint.c	tracing: Don't trace kernel thread syscalls	2009-08-26 21:29:52 +02:00
tsacct.c	…
uid16.c	…
up.c	…
user.c	…
user_namespace.c	…
utsname.c	…
utsname_sysctl.c	…
wait.c	locking, sched: Give waitqueue spinlocks their own lockdep classes	2009-08-10 14:43:09 +02:00
workqueue.c	Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2009-09-11 13:23:18 -07:00