On Thursday, July 28, 2011, [email protected] wrote:
> From: Jean Pihet <[email protected]>
>
> Add the field latency_constraints in the struct dev_pm_info
> and the initialization of the plist in device_pm_init.
>
> This enables the implementation of per-device constraints in
> PM QoS.
>
> Signed-off-by: Jean Pihet <[email protected]>
This one looks good to me.
Thanks,
Rafael
> ---
> drivers/base/power/main.c | 1 +
> include/linux/pm.h | 2 ++
> 2 files changed, 3 insertions(+), 0 deletions(-)
>
> diff --git a/drivers/base/power/main.c b/drivers/base/power/main.c
> index 06f09bf..dad2eb9 100644
> --- a/drivers/base/power/main.c
> +++ b/drivers/base/power/main.c
> @@ -97,6 +97,7 @@ void device_pm_add(struct device *dev)
> dev_name(dev->parent));
> list_add_tail(&dev->power.entry, &dpm_list);
> mutex_unlock(&dpm_list_mtx);
> + plist_head_init(&dev->power.latency_constraints, &dev->power.lock);
> }
>
> /**
> diff --git a/include/linux/pm.h b/include/linux/pm.h
> index 411e4f4..23c85f1 100644
> --- a/include/linux/pm.h
> +++ b/include/linux/pm.h
> @@ -22,6 +22,7 @@
> #define _LINUX_PM_H
>
> #include <linux/list.h>
> +#include <linux/plist.h>
> #include <linux/workqueue.h>
> #include <linux/spinlock.h>
> #include <linux/wait.h>
> @@ -463,6 +464,7 @@ struct dev_pm_info {
> unsigned long accounting_timestamp;
> void *subsys_data; /* Owned by the subsystem. */
> #endif
> + struct plist_head latency_constraints;
> };
>
> extern void update_pm_runtime_accounting(struct device *dev);
>
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