From: Chen Yu <yu.c.chen@intel.com>
To: "Rafael J. Wysocki" <rafael@kernel.org>,
Len Brown <len.brown@intel.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Michal Miroslaw <mirq-linux@rere.qmqm.pl>
Cc: linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org,
Chen Yu <yu.c.chen@intel.com>
Subject: [PATCH 1/2][RFC v2] PM-runtime: Move all runtime usage related function to runtime.c
Date: Mon, 8 Jun 2020 15:41:58 +0800 [thread overview]
Message-ID: <a0cffe38bb82066fe973a916a202c1f8c71cd15e.1591600914.git.yu.c.chen@intel.com> (raw)
In-Reply-To: <cover.1591600914.git.yu.c.chen@intel.com>
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.
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Chen Yu <yu.c.chen@intel.com>
---
drivers/base/power/runtime.c | 12 ++++++++++++
include/linux/pm_runtime.h | 12 ++----------
2 files changed, 14 insertions(+), 10 deletions(-)
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..26510fef2acd 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
--
2.17.1
next prev parent reply other threads:[~2020-06-08 7:41 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-08 7:41 [PATCH 0/2][RFC v2] Change trace point to cover all runtime usage count Chen Yu
2020-06-08 7:41 ` Chen Yu [this message]
2020-06-08 7:42 ` [PATCH 2/2][RFC v2] PM-runtime: change the tracepoints to cover all usage_count Chen Yu
2020-06-08 7:50 ` Michal Miroslaw
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