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| author | Todd E Brandt <todd.e.brandt@linux.intel.com> | 2015-05-28 12:55:53 -0700 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2015-06-10 02:24:49 +0200 |
| commit | 32e8d689dc12e29fcb6ba9c65a33473d0cbdfec8 (patch) | |
| tree | 365a043cb36d98d8f675e4d9bfa4be58ca02fcd8 /drivers/base | |
| parent | 7f436055cb0c0e17c430fb81197b42e20c2e812c (diff) | |
| download | linux-32e8d689dc12e29fcb6ba9c65a33473d0cbdfec8.tar.gz | |
PM / sleep: trace_device_pm_callback coverage in dpm_prepare/complete
Move the trace_device_pm_callback locations for dpm_prepare and dpm_complete to encompass the attempt to capture the device mutex prior to callback. This is needed by analyze_suspend to identify gaps in the trace output caused by the delay in locking the mutex for a device. Signed-off-by: Todd Brandt <todd.e.brandt@linux.intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/base')
| -rw-r--r-- | drivers/base/power/main.c | 11 |
1 files changed, 5 insertions, 6 deletions
diff --git a/drivers/base/power/main.c b/drivers/base/power/main.c index 3d874eca7104..5528e59ae788 100644 --- a/drivers/base/power/main.c +++ b/drivers/base/power/main.c @@ -920,9 +920,7 @@ static void device_complete(struct device *dev, pm_message_t state) if (callback) { pm_dev_dbg(dev, state, info); - trace_device_pm_callback_start(dev, info, state.event); callback(dev); - trace_device_pm_callback_end(dev, 0); } device_unlock(dev); @@ -954,7 +952,9 @@ void dpm_complete(pm_message_t state) list_move(&dev->power.entry, &list); mutex_unlock(&dpm_list_mtx); + trace_device_pm_callback_start(dev, "", state.event); device_complete(dev, state); + trace_device_pm_callback_end(dev, 0); mutex_lock(&dpm_list_mtx); put_device(dev); @@ -1585,11 +1585,8 @@ static int device_prepare(struct device *dev, pm_message_t state) callback = dev->driver->pm->prepare; } - if (callback) { - trace_device_pm_callback_start(dev, info, state.event); + if (callback) ret = callback(dev); - trace_device_pm_callback_end(dev, ret); - } device_unlock(dev); @@ -1631,7 +1628,9 @@ int dpm_prepare(pm_message_t state) get_device(dev); mutex_unlock(&dpm_list_mtx); + trace_device_pm_callback_start(dev, "", state.event); error = device_prepare(dev, state); + trace_device_pm_callback_end(dev, error); mutex_lock(&dpm_list_mtx); if (error) { |