diff options
| author | Aaron Lu <aaron.lu@intel.com> | 2013-12-02 09:54:26 +0400 |
|---|---|---|
| committer | Zhang Rui <rui.zhang@intel.com> | 2014-01-02 06:52:48 +0400 |
| commit | 06475b556cb4863cf1dcace9b2d21dac1fc74daf (patch) | |
| tree | 7e7120df5ff63b3868c8553f69f3005877d7b9b3 /drivers/thermal/step_wise.c | |
| parent | dea4f48a0a301b23c65af8e4fe8ccf360c272fbf (diff) | |
| download | linux-06475b556cb4863cf1dcace9b2d21dac1fc74daf.tar.xz | |
thermal: debug: add debug statement for core and step_wise
To ease debugging thermal problem, add these dynamic debug statements
so that user do not need rebuild kernel to see these info.
Based on a patch from Zhang Rui for debugging on bugzilla:
https://bugzilla.kernel.org/attachment.cgi?id=98671
A sample output after we turn on dynamic debug with the following cmd:
# echo 'module thermal_sys +fp' > /sys/kernel/debug/dynamic_debug/control
is like:
[ 355.147627] update_temperature: thermal thermal_zone0: last_temperature=52000, current_temperature=55000
[ 355.147636] thermal_zone_trip_update: thermal thermal_zone0: Trip1[type=1,temp=79000]:trend=2,throttle=0
[ 355.147644] get_target_state: thermal cooling_device8: cur_state=0
[ 355.147647] thermal_zone_trip_update: thermal cooling_device8: old_target=-1, target=-1
[ 355.147652] get_target_state: thermal cooling_device7: cur_state=0
[ 355.147655] thermal_zone_trip_update: thermal cooling_device7: old_target=-1, target=-1
[ 355.147660] get_target_state: thermal cooling_device6: cur_state=0
[ 355.147663] thermal_zone_trip_update: thermal cooling_device6: old_target=-1, target=-1
[ 355.147668] get_target_state: thermal cooling_device5: cur_state=0
[ 355.147671] thermal_zone_trip_update: thermal cooling_device5: old_target=-1, target=-1
[ 355.147678] thermal_zone_trip_update: thermal thermal_zone0: Trip2[type=0,temp=90000]:trend=1,throttle=0
[ 355.147776] get_target_state: thermal cooling_device0: cur_state=0
[ 355.147783] thermal_zone_trip_update: thermal cooling_device0: old_target=-1, target=-1
[ 355.147792] thermal_zone_trip_update: thermal thermal_zone0: Trip3[type=0,temp=80000]:trend=1,throttle=0
[ 355.147845] get_target_state: thermal cooling_device1: cur_state=0
[ 355.147849] thermal_zone_trip_update: thermal cooling_device1: old_target=-1, target=-1
[ 355.147856] thermal_zone_trip_update: thermal thermal_zone0: Trip4[type=0,temp=70000]:trend=1,throttle=0
[ 355.147904] get_target_state: thermal cooling_device2: cur_state=0
[ 355.147908] thermal_zone_trip_update: thermal cooling_device2: old_target=-1, target=-1
[ 355.147915] thermal_zone_trip_update: thermal thermal_zone0: Trip5[type=0,temp=60000]:trend=1,throttle=0
[ 355.147963] get_target_state: thermal cooling_device3: cur_state=0
[ 355.147967] thermal_zone_trip_update: thermal cooling_device3: old_target=-1, target=-1
[ 355.147973] thermal_zone_trip_update: thermal thermal_zone0: Trip6[type=0,temp=55000]:trend=1,throttle=1
[ 355.148022] get_target_state: thermal cooling_device4: cur_state=0
[ 355.148025] thermal_zone_trip_update: thermal cooling_device4: old_target=-1, target=1
[ 355.148036] thermal_cdev_update: thermal cooling_device4: zone0->target=1
[ 355.169279] thermal_cdev_update: thermal cooling_device4: set to state 1
Signed-off-by: Aaron Lu <aaron.lu@intel.com>
Acked-by: Eduardo Valentin <eduardo.valentin@ti.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Diffstat (limited to 'drivers/thermal/step_wise.c')
| -rw-r--r-- | drivers/thermal/step_wise.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/thermal/step_wise.c b/drivers/thermal/step_wise.c index d89e781b0a18..f251521baaa2 100644 --- a/drivers/thermal/step_wise.c +++ b/drivers/thermal/step_wise.c @@ -60,6 +60,7 @@ static unsigned long get_target_state(struct thermal_instance *instance, */ cdev->ops->get_cur_state(cdev, &cur_state); next_target = instance->target; + dev_dbg(&cdev->device, "cur_state=%ld\n", cur_state); switch (trend) { case THERMAL_TREND_RAISING: @@ -131,6 +132,9 @@ static void thermal_zone_trip_update(struct thermal_zone_device *tz, int trip) if (tz->temperature >= trip_temp) throttle = true; + dev_dbg(&tz->device, "Trip%d[type=%d,temp=%ld]:trend=%d,throttle=%d\n", + trip, trip_type, trip_temp, trend, throttle); + mutex_lock(&tz->lock); list_for_each_entry(instance, &tz->thermal_instances, tz_node) { @@ -139,6 +143,8 @@ static void thermal_zone_trip_update(struct thermal_zone_device *tz, int trip) old_target = instance->target; instance->target = get_target_state(instance, trend, throttle); + dev_dbg(&instance->cdev->device, "old_target=%d, target=%d\n", + old_target, (int)instance->target); if (old_target == instance->target) continue; |