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authorMikael Pettersson <mikpe@it.uu.se>2010-01-09 13:03:59 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2010-01-27 22:04:18 +0000
commite00d9d4b1796dae3adf6e39c9a766e760dd1c796 (patch)
treef866c0a50fabe57f321bb1161265a2e63086d3d9 /arch/arm/mach-ixp4xx
parent74d2e4f8d79ae0c4b6ec027958d5b18058662eea (diff)
downloadop-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.c11
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,
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