[RFC/PATCH 1/9] PM: add a per-device wake-up latency constraints plist
From: <hidden>
Date: 2011-06-24 14:37:58
Subsystem:
driver core, kobjects, debugfs and sysfs, hibernation (aka software suspend, aka swsusp), power management core, suspend to ram, the rest · Maintainers:
Greg Kroah-Hartman, "Rafael J. Wysocki", Danilo Krummrich, Linus Torvalds
From: Jean Pihet <redacted> Add the field wakeup_lat_plist_head 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 <redacted> --- 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 aa632020..6a096d1 100644
--- a/drivers/base/power/main.c
+++ b/drivers/base/power/main.c@@ -64,6 +64,7 @@ void device_pm_init(struct device *dev) spin_lock_init(&dev->power.lock); pm_runtime_init(dev); INIT_LIST_HEAD(&dev->power.entry); + plist_head_init(&dev->power.wakeup_lat_plist_head, &dev->power.lock); } /**
diff --git a/include/linux/pm.h b/include/linux/pm.h
index 3160648..35fe682 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>
@@ -462,6 +463,7 @@ struct dev_pm_info { unsigned long accounting_timestamp; void *subsys_data; /* Owned by the subsystem. */ #endif + struct plist_head wakeup_lat_plist_head; }; extern void update_pm_runtime_accounting(struct device *dev);
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1.7.4.1