[PATCH RFC 15/27] PM / Domains: Add next_wakeup to device's timing data
Kevin Hilman
khilman at kernel.org
Thu Nov 19 14:19:57 PST 2015
Lina Iyer <lina.iyer at linaro.org> writes:
> Allow devices that know when their next wakeup event is, to record save
> it as part of timing data. A genpd governor may use this data to
> determine if suspending the domain is going to affect the QoS of its
> devices.
>
> Signed-off-by: Lina Iyer <lina.iyer at linaro.org>
> ---
> include/linux/pm_domain.h | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/include/linux/pm_domain.h b/include/linux/pm_domain.h
> index f1329ea..9ac089d 100644
> --- a/include/linux/pm_domain.h
> +++ b/include/linux/pm_domain.h
> @@ -16,6 +16,7 @@
> #include <linux/of.h>
> #include <linux/notifier.h>
> #include <linux/spinlock.h>
> +#include <linux/ktime.h>
>
> /* Defines used for the flags field in the struct generic_pm_domain */
> #define GENPD_FLAG_PM_CLK (1U << 0) /* PM domain uses PM clk */
> @@ -104,6 +105,7 @@ struct gpd_timing_data {
> s64 effective_constraint_ns;
> bool constraint_changed;
> bool cached_stop_ok;
> + ktime_t next_wakeup;
> };
The addition of a new field should be combined with the patch that uses
it (e.g. PATCH 16/27)
Kevin
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