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[RFC,15/27] PM / Domains: Add next_wakeup to device's timing data

Message ID 1447799871-56374-16-git-send-email-lina.iyer@linaro.org (mailing list archive)
State RFC
Delegated to: Andy Gross
Headers show

Commit Message

Lina Iyer Nov. 17, 2015, 10:37 p.m. UTC
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@linaro.org>
---
 include/linux/pm_domain.h | 2 ++
 1 file changed, 2 insertions(+)

Comments

Kevin Hilman Nov. 19, 2015, 10:19 p.m. UTC | #1
Lina Iyer <lina.iyer@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@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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Lina Iyer Nov. 20, 2015, 3:58 p.m. UTC | #2
On Thu, Nov 19 2015 at 15:19 -0700, Kevin Hilman wrote:
>Lina Iyer <lina.iyer@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@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)
>
Okay. Will do.

>Kevin
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diff mbox

Patch

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;
 };
 
 struct pm_domain_data {