diff mbox

ARM: exynos: register sched_clock callback

Message ID 1398331286-2020-1-git-send-email-vincent.guittot@linaro.org (mailing list archive)
State New, archived
Headers show

Commit Message

Vincent Guittot April 24, 2014, 9:21 a.m. UTC 
Use the clocksource mct-frc for sched_clock

Signed-off-by: Vincent Guittot <vincent.guittot@linaro.org>
---
 drivers/clocksource/exynos_mct.c | 8 ++++++++
 1 file changed, 8 insertions(+)

Comments

Tomasz Figa April 25, 2014, 11:22 p.m. UTC | #1 
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@linaro.org>
> ---
>   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@samsung.com>

Best regards,
Tomasz
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Daniel Lezcano May 2, 2014, 8:30 a.m. UTC | #2 
On 04/24/2014 11:21 AM, Vincent Guittot wrote:
> Use the clocksource mct-frc for sched_clock
>
> Signed-off-by: Vincent Guittot <vincent.guittot@linaro.org>

Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>

[ ... ]
Kim Kukjin May 2, 2014, 1:24 p.m. UTC | #3 
On 05/02/14 17:30, Daniel Lezcano wrote:
> On 04/24/2014 11:21 AM, Vincent Guittot wrote:
>> Use the clocksource mct-frc for sched_clock
>>
>> Signed-off-by: Vincent Guittot <vincent.guittot@linaro.org>
>
> Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
>
> [ ... ]
>
Applied, thanks.

- Kukjin
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diff mbox

Patch

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)