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Commit 94a57140 authored by Frederic Weisbecker's avatar Frederic Weisbecker
Browse files

tick: Conditionally build nohz specific code in tick handler 



This optimize a bit the high res tick sched handler.

Signed-off-by: default avatarFrederic Weisbecker <fweisbec@gmail.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
parent 9e8f559b

kernel/time/tick-sched.c

+2 −0
Original line number Diff line number Diff line
@@ -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);

}