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authorJosé Pekkarinen <jose.pekkarinen@nokia.com>2016-04-11 10:41:07 +0300
committerJosé Pekkarinen <jose.pekkarinen@nokia.com>2016-04-13 08:17:18 +0300
commite09b41010ba33a20a87472ee821fa407a5b8da36 (patch)
treed10dc367189862e7ca5c592f033dc3726e1df4e3 /kernel/drivers/thermal/fair_share.c
parentf93b97fd65072de626c074dbe099a1fff05ce060 (diff)
These changes are the raw update to linux-4.4.6-rt14. Kernel sources
are taken from kernel.org, and rt patch from the rt wiki download page. During the rebasing, the following patch collided: Force tick interrupt and get rid of softirq magic(I70131fb85). Collisions have been removed because its logic was found on the source already. Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769 Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>
Diffstat (limited to 'kernel/drivers/thermal/fair_share.c')
-rw-r--r--kernel/drivers/thermal/fair_share.c43
1 files changed, 24 insertions, 19 deletions
diff --git a/kernel/drivers/thermal/fair_share.c b/kernel/drivers/thermal/fair_share.c
index 6e0a3fbfa..34fe36504 100644
--- a/kernel/drivers/thermal/fair_share.c
+++ b/kernel/drivers/thermal/fair_share.c
@@ -34,7 +34,7 @@
static int get_trip_level(struct thermal_zone_device *tz)
{
int count = 0;
- unsigned long trip_temp;
+ int trip_temp;
enum thermal_trip_type trip_type;
if (tz->trips == 0 || !tz->ops->get_trip_temp)
@@ -59,17 +59,17 @@ static int get_trip_level(struct thermal_zone_device *tz)
}
static long get_target_state(struct thermal_zone_device *tz,
- struct thermal_cooling_device *cdev, int weight, int level)
+ struct thermal_cooling_device *cdev, int percentage, int level)
{
unsigned long max_state;
cdev->ops->get_max_state(cdev, &max_state);
- return (long)(weight * level * max_state) / (100 * tz->trips);
+ return (long)(percentage * level * max_state) / (100 * tz->trips);
}
/**
- * fair_share_throttle - throttles devices asscciated with the given zone
+ * fair_share_throttle - throttles devices associated with the given zone
* @tz - thermal_zone_device
*
* Throttling Logic: This uses three parameters to calculate the new
@@ -77,7 +77,7 @@ static long get_target_state(struct thermal_zone_device *tz,
*
* Parameters used for Throttling:
* P1. max_state: Maximum throttle state exposed by the cooling device.
- * P2. weight[i]/100:
+ * P2. percentage[i]/100:
* How 'effective' the 'i'th device is, in cooling the given zone.
* P3. cur_trip_level/max_no_of_trips:
* This describes the extent to which the devices should be throttled.
@@ -88,28 +88,33 @@ static long get_target_state(struct thermal_zone_device *tz,
*/
static int fair_share_throttle(struct thermal_zone_device *tz, int trip)
{
- const struct thermal_zone_params *tzp;
- struct thermal_cooling_device *cdev;
struct thermal_instance *instance;
- int i;
+ int total_weight = 0;
+ int total_instance = 0;
int cur_trip_level = get_trip_level(tz);
- if (!tz->tzp || !tz->tzp->tbp)
- return -EINVAL;
+ list_for_each_entry(instance, &tz->thermal_instances, tz_node) {
+ if (instance->trip != trip)
+ continue;
+
+ total_weight += instance->weight;
+ total_instance++;
+ }
- tzp = tz->tzp;
+ list_for_each_entry(instance, &tz->thermal_instances, tz_node) {
+ int percentage;
+ struct thermal_cooling_device *cdev = instance->cdev;
- for (i = 0; i < tzp->num_tbps; i++) {
- if (!tzp->tbp[i].cdev)
+ if (instance->trip != trip)
continue;
- cdev = tzp->tbp[i].cdev;
- instance = get_thermal_instance(tz, cdev, trip);
- if (!instance)
- continue;
+ if (!total_weight)
+ percentage = 100 / total_instance;
+ else
+ percentage = (instance->weight * 100) / total_weight;
- instance->target = get_target_state(tz, cdev,
- tzp->tbp[i].weight, cur_trip_level);
+ instance->target = get_target_state(tz, cdev, percentage,
+ cur_trip_level);
instance->cdev->updated = false;
thermal_cdev_update(cdev);