linux/kernel
Frederic Weisbecker 5b39939a40 nohz: Move ts->idle_calls incrementation into strict idle logic
Since we want to prepare for making the nohz API to work further
the idle case, we need to pull ts->idle_calls incrementation up to
the callers in idle.

To perform this, we split tick_nohz_stop_sched_tick() in two parts:
a first one that checks if we can really stop the tick for idle,
and another that actually stops it. Then from the callers in idle,
we check if we can stop the tick and only then we increment idle_calls
and finally relay to the nohz API that won't care about these details
anymore.

Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Alessio Igor Bogani <abogani@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Avi Kivity <avi@redhat.com>
Cc: Chris Metcalf <cmetcalf@tilera.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
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@ti.com>
Cc: Max Krasnyansky <maxk@qualcomm.com>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephen Hemminger <shemminger@vyatta.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Sven-Thorsten Dietrich <thebigcorporation@gmail.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
2012-06-11 20:07:17 +02:00
..
debug
events perf: Remove duplicate invocation on perf_event_for_each 2012-05-31 14:01:00 -03:00
gcov
irq Merge branches 'irq-urgent-for-linus' and 'smp-hotplug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2012-06-04 11:36:51 -07:00
power
sched Merge branch 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2012-06-08 14:59:29 -07:00
time nohz: Move ts->idle_calls incrementation into strict idle logic 2012-06-11 20:07:17 +02:00
trace Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2012-05-30 11:12:00 -07:00
.gitignore
acct.c
async.c
audit.c
audit.h
audit_tree.c
audit_watch.c
auditfilter.c
auditsc.c
backtracetest.c
bounds.c
capability.c
cgroup.c Merge branch 'for-3.5-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup 2012-06-05 11:54:12 -07:00
cgroup_freezer.c
compat.c
configs.c
cpu.c kernel/cpu.c: document clear_tasks_mm_cpumask() 2012-05-31 17:49:30 -07:00
cpu_pm.c kernel/cpu_pm.c: fix various typos 2012-05-31 17:49:27 -07:00
cpuset.c
crash_dump.c
cred.c keys: kill task_struct->replacement_session_keyring 2012-05-23 22:11:41 -04:00
delayacct.c
dma.c
elfcore.c
exec_domain.c
exit.c Revert "mm: correctly synchronize rss-counters at exit/exec" 2012-06-07 17:54:07 -07:00
extable.c
fork.c Revert "mm: correctly synchronize rss-counters at exit/exec" 2012-06-07 17:54:07 -07:00
freezer.c
futex.c
futex_compat.c
groups.c
hrtimer.c
hung_task.c
irq_work.c
itimer.c
jump_label.c
kallsyms.c vsprintf: fix %ps on non symbols when using kallsyms 2012-05-29 16:22:32 -07:00
kcmp.c syscalls, x86: add __NR_kcmp syscall 2012-05-31 17:49:32 -07:00
Kconfig.freezer
Kconfig.hz
Kconfig.locks
Kconfig.preempt
kexec.c
kfifo.c
kmod.c kmod.c: fix kernel-doc warning 2012-05-31 17:49:28 -07:00
kprobes.c
ksysfs.c
kthread.c
latencytop.c
lglock.c brlocks/lglocks: turn into functions 2012-05-29 23:28:41 -04:00
lockdep.c
lockdep_internals.h
lockdep_proc.c
lockdep_states.h
Makefile Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2012-06-01 10:34:35 -07:00
module.c Guard check in module loader against integer overflow 2012-05-23 22:28:53 +09:30
mutex-debug.c
mutex-debug.h
mutex.c
mutex.h
notifier.c
nsproxy.c
padata.c
panic.c
params.c
pid.c mm: add a low limit to alloc_large_system_hash 2012-05-24 00:28:21 -04:00
pid_namespace.c sysctl: make kernel.ns_last_pid control dependent on CHECKPOINT_RESTORE 2012-05-31 17:49:32 -07:00
posix-cpu-timers.c
posix-timers.c
printk.c
profile.c
ptrace.c
range.c
rcu.h
rcupdate.c
rcutiny.c
rcutiny_plugin.h
rcutorture.c
rcutree.c
rcutree.h
rcutree_plugin.h
rcutree_trace.c
relay.c
res_counter.c rescounters: add res_counter_uncharge_until() 2012-05-29 16:22:27 -07:00
resource.c kernel/resource.c: correct the comment of allocate_resource() 2012-05-31 17:49:26 -07:00
rtmutex-debug.c
rtmutex-debug.h
rtmutex-tester.c
rtmutex.c
rtmutex.h
rtmutex_common.h
rwsem.c
seccomp.c
semaphore.c
signal.c new helper: signal_delivered() 2012-06-01 12:58:52 -04:00
smp.c
smpboot.c smpboot, idle: Fix comment mismatch over idle_threads_init() 2012-05-24 22:58:08 +02:00
smpboot.h
softirq.c
spinlock.c
srcu.c
stacktrace.c
stop_machine.c
sys.c c/r: prctl: drop VMA flags test on PR_SET_MM_ stack data assignment 2012-06-07 14:43:55 -07:00
sys_ni.c syscalls, x86: add __NR_kcmp syscall 2012-05-31 17:49:32 -07:00
sysctl.c
sysctl_binary.c
task_work.c task_work_add: generic process-context callbacks 2012-05-23 22:09:21 -04:00
taskstats.c
test_kprobes.c
time.c
timeconst.pl
timer.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace 2012-05-23 17:42:39 -07:00
tracepoint.c
tsacct.c
uid16.c
up.c
user-return-notifier.c
user.c
user_namespace.c
utsname.c
utsname_sysctl.c
wait.c
watchdog.c
workqueue.c
workqueue_sched.h