From 94a571402012e0dfaa23bbbdd64d033f48477d86 Mon Sep 17 00:00:00 2001 From: Frederic Weisbecker Date: Mon, 15 Oct 2012 16:17:16 +0200 Subject: tick: Conditionally build nohz specific code in tick handler This optimize a bit the high res tick sched handler. Signed-off-by: Frederic Weisbecker Cc: Thomas Gleixner Cc: Ingo Molnar Cc: Peter Zijlstra --- kernel/time/tick-sched.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'kernel/time') diff --git a/kernel/time/tick-sched.c b/kernel/time/tick-sched.c index 68a873af09a..766d4c47a4a 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); } -- cgit v1.2.3