Hi Vincent,
On 24.04.2014 11:21, Vincent Guittot wrote:
Use the clocksource mct-frc for sched_clock
Signed-off-by: Vincent Guittot <vincent.guittot@xxxxxxxxxx>
---
drivers/clocksource/exynos_mct.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/drivers/clocksource/exynos_mct.c b/drivers/clocksource/exynos_mct.c
index a6ee6d7..61b0577 100644
--- a/drivers/clocksource/exynos_mct.c
+++ b/drivers/clocksource/exynos_mct.c
@@ -24,6 +24,7 @@
#include <linux/of_irq.h>
#include <linux/of_address.h>
#include <linux/clocksource.h>
+#include <linux/sched_clock.h>
#define EXYNOS4_MCTREG(x) (x)
#define EXYNOS4_MCT_G_CNT_L EXYNOS4_MCTREG(0x100)
@@ -192,12 +193,19 @@ struct clocksource mct_frc = {
.resume = exynos4_frc_resume,
};
+static u64 notrace exynos4_read_sched_clock(void)
+{
+ return exynos4_frc_read(&mct_frc);
+}
+
static void __init exynos4_clocksource_init(void)
{
exynos4_mct_frc_start(0, 0);
if (clocksource_register_hz(&mct_frc, clk_rate))
panic("%s: can't register clocksource\n", mct_frc.name);
+
+ sched_clock_register(exynos4_read_sched_clock, 64, clk_rate);
}
static void exynos4_mct_comp0_stop(void)
Thanks for this patch.
Reviewed-by: Tomasz Figa <t.figa@xxxxxxxxxxx>
Best regards,
Tomasz
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