Frederic Weisbecker ff442c51f6 nohz: Re-evaluate the tick from the scheduler IPI ... The scheduler IPI is used by the scheduler to kick full dynticks CPUs asynchronously when more than one task are running or when a new timer list timer is enqueued. This way the destination CPU can decide to restart the tick to handle this new situation. Now let's call that kick in the scheduler IPI. (Reusing the scheduler IPI rather than implementing a new IPI was suggested by Peter Zijlstra a while ago) Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Chris Metcalf <cmetcalf@tilera.com> Cc: Christoph Lameter <cl@linux.com> Cc: Geoff Levand <geoff@infradead.org> Cc: Gilad Ben Yossef <gilad@benyossef.com> Cc: Hakan Akkan <hakanakkan@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Kevin Hilman <khilman@linaro.org> Cc: Li Zhong <zhong@linux.vnet.ibm.com> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Paul Gortmaker <paul.gortmaker@windriver.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Thomas Gleixner <tglx@linutronix.de>		2013-04-22 20:16:04 +02:00
..
debug	KGDB/KDB fixes and cleanups	2013-03-02 08:31:39 -08:00
events	perf: New helper to prevent full dynticks CPUs from stopping tick	2013-04-22 19:59:39 +02:00
gcov	kernel/gcov: remove depends on CONFIG_EXPERIMENTAL	2013-01-11 11:39:33 -08:00
irq	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2013-02-26 20:16:07 -08:00
power	Driver core patches for 3.9-rc1	2013-02-21 12:05:51 -08:00
sched	nohz: Re-evaluate the tick from the scheduler IPI	2013-04-22 20:16:04 +02:00
time	nohz: Re-evaluate the tick from the scheduler IPI	2013-04-22 20:16:04 +02:00
trace	ImgTec Meta architecture changes for v3.9-rc1	2013-03-03 12:06:09 -08:00
.gitignore	…
Kconfig.freezer	…
Kconfig.hz	…
Kconfig.locks	locking: Adjust spin lock inlining Kconfig options	2012-09-13 17:56:13 +02:00
Kconfig.preempt	…
Makefile	Merge branch 'akpm' (final batch from Andrew)	2013-02-27 20:58:09 -08:00
acct.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2013-02-26 20:16:07 -08:00
async.c	Merge branch 'for-3.9' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq	2013-02-19 22:01:33 -08:00
audit.c	kernel/audit.c: avoid negative sleep durations	2013-01-11 14:54:56 -08:00
audit.h	audit: optimize audit_compare_dname_path	2012-10-12 00:32:02 -04:00
audit_tree.c	audit: catch possible NULL audit buffers	2013-01-11 14:54:55 -08:00
audit_watch.c	audit: catch possible NULL audit buffers	2013-01-11 14:54:55 -08:00
auditfilter.c	audit: fix auditfilter.c kernel-doc warnings	2013-01-10 14:35:23 -08:00
auditsc.c	audit: catch possible NULL audit buffers	2013-01-11 14:54:55 -08:00
backtracetest.c	…
bounds.c	…
capability.c	…
cgroup.c	hlist: drop the node parameter from iterators	2013-02-27 19:10:24 -08:00
cgroup_freezer.c	cgroup: rename ->create/post_create/pre_destroy/destroy() to ->css_alloc/online/offline/free()	2012-11-19 08:13:38 -08:00
compat.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal	2013-02-23 18:50:11 -08:00
configs.c	…
context_tracking.c	Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2013-02-19 18:19:48 -08:00
cpu.c	Merge branch 'smp-hotplug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2013-02-19 19:04:55 -08:00
cpu_pm.c	…
cpuset.c	Merge branch 'for-3.9-cpuset' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup	2013-02-20 09:18:31 -08:00
crash_dump.c	…
cred.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace	2012-12-18 10:55:28 -08:00
delayacct.c	cputime: Use accessors to read task cputime stats	2013-01-27 19:23:31 +01:00
dma.c	…
elfcore.c	…
exec_domain.c	…
exit.c	coredump: use a freezable_schedule for the coredump_finish wait	2013-02-27 19:10:11 -08:00
extable.c	…
fork.c	cputime: Dynamically scale cputime for full dynticks accounting	2013-03-07 17:10:32 +01:00
freezer.c	freezer: change ptrace_stop/do_signal_stop to use freezable_schedule()	2012-10-26 14:27:49 -07:00
futex.c	more file_inode() open-coded instances	2013-02-27 16:59:05 -05:00
futex_compat.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal	2013-02-23 18:50:11 -08:00
groups.c	…
hrtimer.c	nohz: Rename CONFIG_NO_HZ to CONFIG_NO_HZ_COMMON	2013-04-03 13:56:03 +02:00
hung_task.c	…
irq_work.c	Merge branch 'nohz/printk-v8' into irq/core	2013-02-05 00:48:46 +01:00
itimer.c	…
jump_label.c	jump_label: Export jump_label_rate_limit()	2012-08-06 19:00:35 +03:00
kallsyms.c	…
kcmp.c	kcmp: include linux/ptrace.h	2012-12-20 17:40:19 -08:00
kexec.c	kexec: avoid freeing NULL pointer in image_crash_alloc()	2013-02-27 19:10:12 -08:00
kmod.c	Merge branch 'master' into for-3.9-async	2013-01-23 09:31:01 -08:00
kprobes.c	hlist: drop the node parameter from iterators	2013-02-27 19:10:24 -08:00
ksysfs.c	Merge branch 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2012-12-11 18:10:49 -08:00
kthread.c	kthread: use N_MEMORY instead N_HIGH_MEMORY	2012-12-12 17:38:33 -08:00
latencytop.c	…
lglock.c	…
lockdep.c	lockdep: check that no locks held at freeze time	2013-02-27 19:10:11 -08:00
lockdep_internals.h	…
lockdep_proc.c	lockdep: Use KSYM_NAME_LEN'ed buffer for __get_key_name()	2012-10-24 12:39:09 +02:00
lockdep_states.h	…
modsign_certificate.S	MODSIGN: Avoid using .incbin in C source	2012-12-14 13:06:44 +10:30
modsign_pubkey.c	keys: use keyring_alloc() to create module signing keyring	2012-12-20 17:40:21 -08:00
module-internal.h	MODSIGN: Move the magic string to the end of a module and eliminate the search	2012-10-19 17:30:40 -07:00
module.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2013-02-26 20:16:07 -08:00
module_signing.c	MODSIGN: Don't use enum-type bitfields in module signature info block	2012-12-05 11:27:24 +10:30
mutex-debug.c	…
mutex-debug.h	…
mutex.c	sched/rt: Move rt specific bits into new header file	2013-02-07 20:51:08 +01:00
mutex.h	…
notifier.c	…
nsproxy.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2013-02-26 20:16:07 -08:00
padata.c	padata: use __this_cpu_read per-cpu helper	2012-12-06 17:16:23 +08:00
panic.c	taint: add explicit flag to show whether lock dep is still OK.	2013-01-21 17:17:57 +10:30
params.c	…
pid.c	hlist: drop the node parameter from iterators	2013-02-27 19:10:24 -08:00
pid_namespace.c	pidns: Stop pid allocation when init dies	2012-12-25 16:10:05 -08:00
posix-cpu-timers.c	posix_timers: Fix pre-condition to stop the tick on full dynticks	2013-04-22 19:59:25 +02:00
posix-timers.c	posix-timers: convert to idr_alloc()	2013-02-27 19:10:19 -08:00
printk.c	Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux	2013-02-25 16:46:44 -08:00
profile.c	profiling: Remove unused timer hook	2013-01-24 15:37:26 +01:00
ptrace.c	uprobes: Add exports for module use	2013-02-08 17:47:13 +01:00
range.c	…
rcu.h	rcu: Provide RCU CPU stall warnings for tiny RCU	2013-01-28 22:06:21 -08:00
rcupdate.c	Merge branches 'doctorture.2013.01.29a', 'fixes.2013.01.26a', 'tagcb.2013.01.24a' and 'tiny.2013.01.29b' into HEAD	2013-01-28 22:25:21 -08:00
rcutiny.c	Merge branches 'doctorture.2013.01.29a', 'fixes.2013.01.26a', 'tagcb.2013.01.24a' and 'tiny.2013.01.29b' into HEAD	2013-01-28 22:25:21 -08:00
rcutiny_plugin.h	rcu: Provide RCU CPU stall warnings for tiny RCU	2013-01-28 22:06:21 -08:00
rcutorture.c	rcu: Allow rcutorture to be built at low optimization levels	2013-02-04 12:18:20 -08:00
rcutree.c	nohz: Ensure full dynticks CPUs are RCU nocbs	2013-04-19 13:54:04 +02:00
rcutree.h	nohz: Ensure full dynticks CPUs are RCU nocbs	2013-04-19 13:54:04 +02:00
rcutree_plugin.h	nohz: Ensure full dynticks CPUs are RCU nocbs	2013-04-19 13:54:04 +02:00
rcutree_trace.c	rcu: Separate accounting of callbacks from callback-free CPUs	2012-11-16 10:05:57 -08:00
relay.c	new helper: file_inode(file)	2013-02-22 23:31:31 -05:00
res_counter.c	res_counter: return amount of charges after res_counter_uncharge()	2012-12-18 15:02:12 -08:00
resource.c	kernel/resource.c: fix stack overflow in __reserve_region_with_split()	2012-10-06 03:05:31 +09:00
rtmutex-debug.c	sched/rt: Move rt specific bits into new header file	2013-02-07 20:51:08 +01:00
rtmutex-debug.h	…
rtmutex-tester.c	sched/rt: Move rt specific bits into new header file	2013-02-07 20:51:08 +01:00
rtmutex.c	sched/rt: Move rt specific bits into new header file	2013-02-07 20:51:08 +01:00
rtmutex.h	…
rtmutex_common.h	…
rwsem.c	lockdep, rwsem: provide down_write_nest_lock()	2013-01-11 14:54:55 -08:00
seccomp.c	seccomp: Make syscall skipping and nr changes more consistent	2012-10-02 21:14:29 +10:00
semaphore.c	…
signal.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal	2013-03-02 19:32:06 -08:00
smp.c	smp: make smp_call_function_many() use logic similar to smp_call_function_single()	2013-02-21 17:22:20 -08:00
smpboot.c	hlist: drop the node parameter from iterators	2013-02-27 19:10:24 -08:00
smpboot.h	smpboot: Provide infrastructure for percpu hotplug threads	2012-08-13 17:01:07 +02:00
softirq.c	nohz: Rename CONFIG_NO_HZ to CONFIG_NO_HZ_COMMON	2013-04-03 13:56:03 +02:00
spinlock.c	…
srcu.c	srcu: use ACCESS_ONCE() to access sp->completed in srcu_read_lock()	2013-02-07 15:19:36 -08:00
stacktrace.c	…
stop_machine.c	stop_machine: Use smpboot threads	2013-02-14 15:29:38 +01:00
sys.c	usermodehelper: cleanup/fix __orderly_poweroff() && argv_free()	2013-02-27 19:10:09 -08:00
sys_ni.c	module: add syscall to load module from fd	2012-12-14 13:05:22 +10:30
sysctl.c	Initial ARC Linux port with some fixes on top for 3.9-rc1	2013-03-02 07:58:56 -08:00
sysctl_binary.c	sysctl: fix null checking in bin_dn_node_address()	2013-02-27 19:10:21 -08:00
task_work.c	task_work: task_work_add() should not succeed after exit_task_work()	2012-09-13 16:47:34 +02:00
taskstats.c	taskstats: cgroupstats_user_cmd() may leak on error	2012-10-06 03:05:31 +09:00
test_kprobes.c	…
time.c	time: don't inline EXPORT_SYMBOL functions	2013-02-21 17:22:19 -08:00
timeconst.bc	kernel: Replace timeconst.pl with a bc script	2013-02-16 23:17:25 +01:00
timer.c	nohz: Rename CONFIG_NO_HZ to CONFIG_NO_HZ_COMMON	2013-04-03 13:56:03 +02:00
tracepoint.c	hlist: drop the node parameter from iterators	2013-02-27 19:10:24 -08:00
tsacct.c	cputime: Use accessors to read task cputime stats	2013-01-27 19:23:31 +01:00
uid16.c	…
up.c	…
user-return-notifier.c	hlist: drop the node parameter from iterators	2013-02-27 19:10:24 -08:00
user.c	hlist: drop the node parameter from iterators	2013-02-27 19:10:24 -08:00
user_namespace.c	userns: Allow any uid or gid mappings that don't overlap.	2013-01-26 22:12:04 -08:00
utsname.c	kernel/utsname.c: fix wrong comment about clone_uts_ns()	2013-02-27 19:10:22 -08:00
utsname_sysctl.c	kernel/utsname_sysctl.c: put get/get_uts() into CONFIG_PROC_SYSCTL code block	2013-02-27 19:10:22 -08:00
wait.c	propagate name change to comments in kernel source	2012-12-06 10:39:54 +01:00
watchdog.c	Merge branch 'core-locking-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2013-02-22 19:25:09 -08:00
workqueue.c	hlist: drop the node parameter from iterators	2013-02-27 19:10:24 -08:00
workqueue_internal.h	workqueue: rename cpu_workqueue to pool_workqueue	2013-02-13 19:29:12 -08:00