diff mbox series

[1/2,RFC] PM-runtime: Move all runtime usage related function to runtime.c

Message ID 3e7c571eb9e444c6e326d5cbb1f6e2dce4bb52fe.1591380524.git.yu.c.chen@intel.com (mailing list archive)
State Superseded, archived
Headers show
Series Add more trace point for runtime usage count | expand

Commit Message

Chen Yu June 5, 2020, 7:05 p.m. UTC 
In order to track all the runtime usage count change, move the code
related to runtime usage count change from pm_runtime.h to runtime.c,
so that in runtime.c we can leverage trace event to do the tracking.
Meanwhile export pm_runtime_get_noresume() and pm_runtime_put_noidle()
so the module can use them.

No functional change.

Signed-off-by: Chen Yu <yu.c.chen@intel.com>
---
 drivers/base/power/runtime.c | 12 ++++++++++++
 include/linux/pm_runtime.h   | 14 ++++----------
 2 files changed, 16 insertions(+), 10 deletions(-)

Comments

Chen Yu June 6, 2020, 5:18 p.m. UTC | #1 
On Sat, Jun 06, 2020 at 03:05:35AM +0800, Chen Yu wrote:
> In order to track all the runtime usage count change, move the code
> related to runtime usage count change from pm_runtime.h to runtime.c,
> so that in runtime.c we can leverage trace event to do the tracking.
> Meanwhile export pm_runtime_get_noresume() and pm_runtime_put_noidle()
> so the module can use them.
> 
> No functional change.
>
There is a compile issue found by lkp, will send a
new version out.

Thanks,
Chenyu
diff mbox series

Patch

diff --git a/drivers/base/power/runtime.c b/drivers/base/power/runtime.c
index 9f62790f644c..85a248e196ca 100644
--- a/drivers/base/power/runtime.c
+++ b/drivers/base/power/runtime.c
@@ -1738,6 +1738,18 @@  void pm_runtime_drop_link(struct device *dev)
 	spin_unlock_irq(&dev->power.lock);
 }
 
+void pm_runtime_get_noresume(struct device *dev)
+{
+	atomic_inc(&dev->power.usage_count);
+}
+EXPORT_SYMBOL_GPL(pm_runtime_get_noresume);
+
+void pm_runtime_put_noidle(struct device *dev)
+{
+	atomic_add_unless(&dev->power.usage_count, -1, 0);
+}
+EXPORT_SYMBOL_GPL(pm_runtime_put_noidle);
+
 static bool pm_runtime_need_not_resume(struct device *dev)
 {
 	return atomic_read(&dev->power.usage_count) <= 1 &&
diff --git a/include/linux/pm_runtime.h b/include/linux/pm_runtime.h
index 3dbc207bff53..57afdb122d8a 100644
--- a/include/linux/pm_runtime.h
+++ b/include/linux/pm_runtime.h
@@ -59,6 +59,8 @@  extern void pm_runtime_get_suppliers(struct device *dev);
 extern void pm_runtime_put_suppliers(struct device *dev);
 extern void pm_runtime_new_link(struct device *dev);
 extern void pm_runtime_drop_link(struct device *dev);
+extern void pm_runtime_get_noresume(struct device *dev);
+extern void pm_runtime_put_noidle(struct device *dev);
 
 static inline int pm_runtime_get_if_in_use(struct device *dev)
 {
@@ -70,16 +72,6 @@  static inline void pm_suspend_ignore_children(struct device *dev, bool enable)
 	dev->power.ignore_children = enable;
 }
 
-static inline void pm_runtime_get_noresume(struct device *dev)
-{
-	atomic_inc(&dev->power.usage_count);
-}
-
-static inline void pm_runtime_put_noidle(struct device *dev)
-{
-	atomic_add_unless(&dev->power.usage_count, -1, 0);
-}
-
 static inline bool pm_runtime_suspended(struct device *dev)
 {
 	return dev->power.runtime_status == RPM_SUSPENDED
@@ -188,6 +180,8 @@  static inline void pm_runtime_get_suppliers(struct device *dev) {}
 static inline void pm_runtime_put_suppliers(struct device *dev) {}
 static inline void pm_runtime_new_link(struct device *dev) {}
 static inline void pm_runtime_drop_link(struct device *dev) {}
+static inline void pm_runtime_get_noresume(struct device *dev) {}
+static inline void pm_runtime_put_noidle(struct device *dev) {}
 
 #endif /* !CONFIG_PM */