Borislav Petkov d1d74d14e9 rcu: Expedite grace periods during suspend/resume ... CONFIG_RCU_FAST_NO_HZ can increase grace-period durations by up to a factor of four, which can result in long suspend and resume times. Thus, this commit temporarily switches to expedited grace periods when suspending the box and return to normal settings when resuming. Similar logic is applied to hibernation. Because expedited grace periods are of dubious benefit on very large systems, so this commit restricts their automated use during suspend and resume to systems of 256 or fewer CPUs. (Some day a number of Linux-kernel facilities, including RCU's expedited grace periods, will be more scalable, but I need to see bug reports first.) [ paulmck: This also papers over an audio/irq bug, but hopefully that will be fixed soon. ] Signed-off-by: Borislav Petkov <bp@suse.de> Signed-off-by: Bjørn Mork <bjorn@mork.no> Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Reviewed-by: Josh Triplett <josh@joshtriplett.org>		2013-08-18 17:37:17 -07:00
..
cpu	idle: Enable interrupts in the weak arch_cpu_idle() implementation	2013-06-14 23:01:05 +02:00
debug
events	Driver core patches for 3.11-rc2	2013-07-18 12:48:40 -07:00
gcov
irq	Merge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2013-07-13 15:37:30 -07:00
power	PM / Sleep: avoid 'autosleep' in shutdown progress	2013-07-15 01:31:37 +02:00
sched	kernel: delete __cpuinit usage from all core kernel files	2013-07-14 19:36:59 -04:00
time	kernel: delete __cpuinit usage from all core kernel files	2013-07-14 19:36:59 -04:00
trace	tracing: Add __tracepoint_string() to export string pointers	2013-07-26 13:39:44 -04:00
.gitignore
acct.c
async.c
audit_tree.c	kernel/audit_tree.c:audit_add_tree_rule(): protect `rule' from kill_rules()	2013-06-12 16:29:46 -07:00
audit_watch.c
audit.c	audit: wait_for_auditd() should use TASK_UNINTERRUPTIBLE	2013-06-12 16:29:45 -07:00
audit.h	audit: fix mq_open and mq_unlink to add the MQ root as a hidden parent audit_names record	2013-07-09 10:33:19 -07:00
auditfilter.c	audit: Fix decimal constant description	2013-07-09 10:33:19 -07:00
auditsc.c	audit: fix mq_open and mq_unlink to add the MQ root as a hidden parent audit_names record	2013-07-09 10:33:19 -07:00
backtracetest.c
bounds.c
capability.c
cgroup_freezer.c
cgroup.c	cgroup: we can use simple_lookup() now	2013-07-14 17:50:23 +04:00
compat.c
configs.c
context_tracking.c	Merge branch 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2013-06-20 08:18:35 -10:00
cpu_pm.c
cpu.c	kernel: delete __cpuinit usage from all core kernel files	2013-07-14 19:36:59 -04:00
cpuset.c	Merge branch 'for-3.11-cpuset' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup	2013-07-02 20:04:25 -07:00
crash_dump.c
cred.c
delayacct.c
dma.c
elfcore.c
exec_domain.c
exit.c	ptrace: revert "Prepare to fix racy accesses on task breakpoints"	2013-07-09 10:33:26 -07:00
extable.c
fork.c	kernel: delete __cpuinit usage from all core kernel files	2013-07-14 19:36:59 -04:00
freezer.c
futex_compat.c
futex.c	futex: Use freezable blocking call	2013-06-25 23:11:19 +02:00
groups.c
hrtimer.c	kernel: delete __cpuinit usage from all core kernel files	2013-07-14 19:36:59 -04:00
hung_task.c
irq_work.c
itimer.c
jump_label.c
kallsyms.c
kcmp.c
Kconfig.freezer
Kconfig.hz
Kconfig.locks	locking: Fix copy/paste errors of "ARCH_INLINE_*_UNLOCK_BH"	2013-05-28 08:50:00 +02:00
Kconfig.preempt
kexec.c
kmod.c	usermodehelper: kill the sub_info->path[0] check	2013-07-03 16:08:02 -07:00
kprobes.c	kprobes: handle empty/invalid input to debugfs "enabled" file	2013-07-03 16:07:46 -07:00
ksysfs.c
kthread.c
latencytop.c
lglock.c
lockdep_internals.h
lockdep_proc.c
lockdep_states.h
lockdep.c
Makefile	reboot: move shutdown/reboot related functions to kernel/reboot.c	2013-07-09 10:33:29 -07:00
modsign_certificate.S
modsign_pubkey.c
module_signing.c
module-internal.h
module.c	Nothing interesting. Except the most embarrassing bugfix ever. But let's	2013-07-10 14:51:41 -07:00
mutex-debug.c
mutex-debug.h
mutex.c	mutex: Move ww_mutex definitions to ww_mutex.h	2013-07-12 12:07:46 +02:00
mutex.h
notifier.c
nsproxy.c
padata.c
panic.c	The majority of the changes here are cleanups for the large changes that	2013-07-11 09:02:09 -07:00
params.c	There is no /sys/parameters	2013-07-02 15:38:19 +09:30
pid_namespace.c
pid.c	kernel/pid.c: move statement	2013-07-03 16:08:05 -07:00
posix-cpu-timers.c	posix_timers: fix racy timer delta caching on task exit	2013-07-03 16:54:42 +02:00
posix-timers.c
printk.c	kernel: delete __cpuinit usage from all core kernel files	2013-07-14 19:36:59 -04:00
profile.c	kernel: delete __cpuinit usage from all core kernel files	2013-07-14 19:36:59 -04:00
ptrace.c	ptrace: PTRACE_DETACH should do flush_ptrace_hw_breakpoint(child)	2013-07-09 10:33:26 -07:00
range.c	range: Do not add new blank slot with add_range_with_merge	2013-06-18 11:32:10 -05:00
rcu.h	rcu: Add const annotation to char * for RCU tracepoints and functions	2013-07-29 17:07:49 -04:00
rcupdate.c	rcu: Add const annotation to char * for RCU tracepoints and functions	2013-07-29 17:07:49 -04:00
rcutiny_plugin.h	rcu: Add const annotation to char * for RCU tracepoints and functions	2013-07-29 17:07:49 -04:00
rcutiny.c	rcu: Add const annotation to char * for RCU tracepoints and functions	2013-07-29 17:07:49 -04:00
rcutorture.c	rcu: Add const annotation to char * for RCU tracepoints and functions	2013-07-29 17:07:49 -04:00
rcutree_plugin.h	rcu: Have the RCU tracepoints use the tracepoint_string infrastructure	2013-07-29 17:08:04 -04:00
rcutree_trace.c
rcutree.c	rcu: Expedite grace periods during suspend/resume	2013-08-18 17:37:17 -07:00
rcutree.h	rcu: Add const annotation to char * for RCU tracepoints and functions	2013-07-29 17:07:49 -04:00
reboot.c	reboot: move arch/x86 reboot= handling to generic kernel	2013-07-09 10:33:29 -07:00
relay.c	kernel: delete __cpuinit usage from all core kernel files	2013-07-14 19:36:59 -04:00
res_counter.c
resource.c	kernel/resource.c: remove the unneeded assignment in function __find_resource	2013-07-03 16:08:06 -07:00
rtmutex_common.h
rtmutex-debug.c
rtmutex-debug.h
rtmutex-tester.c
rtmutex.c	rtmutex: Document rt_mutex_adjust_prio_chain()	2013-05-28 09:23:52 +02:00
rtmutex.h
rwsem.c
seccomp.c
semaphore.c
signal.c
smp.c	kernel: delete __cpuinit usage from all core kernel files	2013-07-14 19:36:59 -04:00
smpboot.c	kernel: delete __cpuinit usage from all core kernel files	2013-07-14 19:36:59 -04:00
smpboot.h
softirq.c	kernel: delete __cpuinit usage from all core kernel files	2013-07-14 19:36:59 -04:00
spinlock.c
srcu.c
stacktrace.c
stop_machine.c
sys_ni.c
sys.c	reboot: move shutdown/reboot related functions to kernel/reboot.c	2013-07-09 10:33:29 -07:00
sysctl_binary.c	kernel: remove unnecessary head file	2013-06-26 18:01:46 +09:00
sysctl.c	Merge branch 'linus' into timers/urgent	2013-07-12 12:34:42 +02:00
task_work.c
taskstats.c
test_kprobes.c
time.c	sched: Rename sched.c as sched/core.c in comments and Documentation	2013-06-19 12:58:42 +02:00
timeconst.bc
timer.c	kernel: delete __cpuinit usage from all core kernel files	2013-07-14 19:36:59 -04:00
tracepoint.c
tsacct.c
uid16.c
up.c
user_namespace.c
user-return-notifier.c
user.c
utsname_sysctl.c
utsname.c
wait.c
watchdog.c	watchdog: Boot-disable by default on full dynticks	2013-06-20 15:46:32 +02:00
workqueue_internal.h	sched: Rename sched.c as sched/core.c in comments and Documentation	2013-06-19 12:58:42 +02:00
workqueue.c	kernel: delete __cpuinit usage from all core kernel files	2013-07-14 19:36:59 -04:00