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| author | Mikael Pettersson <mikpe@it.uu.se> | 2010-01-09 13:03:59 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2010-01-27 22:04:18 +0000 |
| commit | e00d9d4b1796dae3adf6e39c9a766e760dd1c796 (patch) | |
| tree | f866c0a50fabe57f321bb1161265a2e63086d3d9 /arch/arm/mach-ixp4xx | |
| parent | 74d2e4f8d79ae0c4b6ec027958d5b18058662eea (diff) | |
| download | op-kernel-dev-e00d9d4b1796dae3adf6e39c9a766e760dd1c796.zip op-kernel-dev-e00d9d4b1796dae3adf6e39c9a766e760dd1c796.tar.gz | |
ARM: 5869/1: ixp4xx: implement sched_clock()
Add a better sched_clock() to the ixp4xx platform,
implemented via its clocksource support.
This is based on the sched_clock() I implemented for
the IOP platform. Tested on a ds101 ixp420 machine.
Signed-off-by: Mikael Pettersson <mikpe@it.uu.se>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mach-ixp4xx')
| -rw-r--r-- | arch/arm/mach-ixp4xx/common.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/arch/arm/mach-ixp4xx/common.c b/arch/arm/mach-ixp4xx/common.c index 3bbf40f..71728d3 100644 --- a/arch/arm/mach-ixp4xx/common.c +++ b/arch/arm/mach-ixp4xx/common.c @@ -427,6 +427,17 @@ static void __init ixp4xx_clocksource_init(void) } /* + * sched_clock() + */ +unsigned long long sched_clock(void) +{ + cycle_t cyc = ixp4xx_get_cycles(NULL); + struct clocksource *cs = &clocksource_ixp4xx; + + return clocksource_cyc2ns(cyc, cs->mult, cs->shift); +} + +/* * clockevents */ static int ixp4xx_set_next_event(unsigned long evt, |
