Commit c6a3c851 authored Dec 23, 2009 by David Daney Committed by Ralf Baechle Jan 12, 2010

MIPS: Octeon: Add sched_clock() to csrc-octeon.c



With the advent of function graph tracing on MIPS, Octeon needs a high
precision sched_clock() implementation.  Without it, most timing
numbers are reported as 0.000.

This new sched_clock just uses the 64-bit cycle counter appropriately
scaled.

Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Patchwork: http://patchwork.linux-mips.org/patch/805/


Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

parent 98bea6fc

arch/mips/cavium-octeon/csrc-octeon.c

+7 −0

Original line number	Diff line number	Diff line
		@@ -50,6 +50,13 @@ static struct clocksource clocksource_mips = {
		.flags = CLOCK_SOURCE_IS_CONTINUOUS,
		};

		unsigned long long notrace sched_clock(void)
		{
		return clocksource_cyc2ns(read_c0_cvmcount(),
		clocksource_mips.mult,
		clocksource_mips.shift);
		}

		void __init plat_time_init(void)
		{
		clocksource_mips.rating = 300;