The patch titled
arch/arm/mach-tegra/timer.c: separate clocksource and sched_clock
has been added to the -mm tree. Its filename is
arch-arm-mach-tegra-timerc-separate-clocksource-and-sched_clock.patch
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------------------------------------------------------
Subject: arch/arm/mach-tegra/timer.c: separate clocksource and sched_clock
From: Colin Cross <ccross@xxxxxxxxxxx>
tegra_clocksource_read should not use cnt32_to_63, wrapping is already
handled in the clocksource code. Move the cnt32_to_63 into the
sched_clock function, and replace the use of clocksource mult and shift
with a multiplication by 1000 to convert us to ns.
Signed-off-by: Colin Cross <ccross@xxxxxxxxxxx>
Acked-by: John Stultz <johnstul@xxxxxxxxxx>
Acked-by: Linus Walleij <linus.walleij@xxxxxxxxxxxxxx>
Cc: Russell King <rmk@xxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/arm/mach-tegra/timer.c | 7 +++----
1 file changed, 3 insertions(+), 4 deletions(-)
diff -puN arch/arm/mach-tegra/timer.c~arch-arm-mach-tegra-timerc-separate-clocksource-and-sched_clock arch/arm/mach-tegra/timer.c
--- a/arch/arm/mach-tegra/timer.c~arch-arm-mach-tegra-timerc-separate-clocksource-and-sched_clock
+++ a/arch/arm/mach-tegra/timer.c
@@ -91,7 +91,7 @@ static void tegra_timer_set_mode(enum cl
static cycle_t tegra_clocksource_read(struct clocksource *cs)
{
- return cnt32_to_63(timer_readl(TIMERUS_CNTR_1US));
+ return timer_readl(TIMERUS_CNTR_1US);
}
static struct clock_event_device tegra_clockevent = {
@@ -106,14 +106,13 @@ static struct clocksource tegra_clocksou
.name = "timer_us",
.rating = 300,
.read = tegra_clocksource_read,
- .mask = 0x7FFFFFFFFFFFFFFFULL,
+ .mask = CLOCKSOURCE_MASK(32),
.flags = CLOCK_SOURCE_IS_CONTINUOUS,
};
unsigned long long sched_clock(void)
{
- return clocksource_cyc2ns(tegra_clocksource.read(&tegra_clocksource),
- tegra_clocksource.mult, tegra_clocksource.shift);
+ return cnt32_to_63(timer_readl(TIMERUS_CNTR_1US)) * 1000;
}
static irqreturn_t tegra_timer_interrupt(int irq, void *dev_id)
_
Patches currently in -mm which might be from ccross@xxxxxxxxxxx are
arch-arm-mach-tegra-timerc-separate-clocksource-and-sched_clock.patch
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