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| author | Frederic Weisbecker <fweisbec@gmail.com> | 2012-10-15 16:17:16 +0200 |
|---|---|---|
| committer | Frederic Weisbecker <fweisbec@gmail.com> | 2012-10-15 18:51:08 +0200 |
| commit | 94a571402012e0dfaa23bbbdd64d033f48477d86 (patch) | |
| tree | 84118deba518eedd0aae50155f214712ac594813 /kernel/time | |
| parent | 9e8f559b08cbc1cfcbf093840a2a760a946cb90f (diff) | |
| download | lwn-94a571402012e0dfaa23bbbdd64d033f48477d86.tar.gz lwn-94a571402012e0dfaa23bbbdd64d033f48477d86.zip | |
tick: Conditionally build nohz specific code in tick handler
This optimize a bit the high res tick sched handler.
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Diffstat (limited to 'kernel/time')
| -rw-r--r-- | kernel/time/tick-sched.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/kernel/time/tick-sched.c b/kernel/time/tick-sched.c index 68a873af09a8..766d4c47a4a4 100644 --- a/kernel/time/tick-sched.c +++ b/kernel/time/tick-sched.c @@ -122,6 +122,7 @@ static void tick_sched_do_timer(ktime_t now) static void tick_sched_handle(struct tick_sched *ts, struct pt_regs *regs) { +#ifdef CONFIG_NO_HZ /* * When we are idle and the tick is stopped, we have to touch * the watchdog as we might not schedule for a really long @@ -135,6 +136,7 @@ static void tick_sched_handle(struct tick_sched *ts, struct pt_regs *regs) if (is_idle_task(current)) ts->idle_jiffies++; } +#endif update_process_times(user_mode(regs)); profile_tick(CPU_PROFILING); } |