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Commit 5e67b51e authored by Namhyung Kim's avatar Namhyung Kim Committed by Steven Rostedt
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tracing: Use sched_clock_cpu for trace_clock_global 

For systems with an unstable sched_clock, all cpu_clock() does is enable/
disable local irq during the call to sched_clock_cpu().  And for stable
systems they are same.

trace_clock_global() already disables interrupts, so it can call
sched_clock_cpu() directly.

Link: http://lkml.kernel.org/r/1356576585-28782-2-git-send-email-namhyung@kernel.org



Signed-off-by: default avatarNamhyung Kim <namhyung@kernel.org>
Signed-off-by: default avatarSteven Rostedt <rostedt@goodmis.org>
parent ad964704

kernel/trace/trace_clock.c

+1 −1
Original line number Diff line number Diff line
@@ -84,7 +84,7 @@ u64 notrace trace_clock_global(void) 
	local_irq_save(flags);



	this_cpu = raw_smp_processor_id();

	now = cpu_clock(this_cpu);

	now = sched_clock_cpu(this_cpu);

	/*

	 * If in an NMI context then dont risk lockups and return the

	 * cpu_clock() time: