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Diffstat (limited to 'drivers/thermal/power_allocator.c')
-rw-r--r--drivers/thermal/power_allocator.c26
1 files changed, 16 insertions, 10 deletions
diff --git a/drivers/thermal/power_allocator.c b/drivers/thermal/power_allocator.c
index 4672250b329f..63a448f9d93b 100644
--- a/drivers/thermal/power_allocator.c
+++ b/drivers/thermal/power_allocator.c
@@ -229,7 +229,8 @@ static int allocate_power(struct thermal_zone_device *tz,
229 struct thermal_instance *instance; 229 struct thermal_instance *instance;
230 struct power_allocator_params *params = tz->governor_data; 230 struct power_allocator_params *params = tz->governor_data;
231 u32 *req_power, *max_power, *granted_power, *extra_actor_power; 231 u32 *req_power, *max_power, *granted_power, *extra_actor_power;
232 u32 total_req_power, max_allocatable_power; 232 u32 *weighted_req_power;
233 u32 total_req_power, max_allocatable_power, total_weighted_req_power;
233 u32 total_granted_power, power_range; 234 u32 total_granted_power, power_range;
234 int i, num_actors, total_weight, ret = 0; 235 int i, num_actors, total_weight, ret = 0;
235 int trip_max_desired_temperature = params->trip_max_desired_temperature; 236 int trip_max_desired_temperature = params->trip_max_desired_temperature;
@@ -247,16 +248,17 @@ static int allocate_power(struct thermal_zone_device *tz,
247 } 248 }
248 249
249 /* 250 /*
250 * We need to allocate three arrays of the same size: 251 * We need to allocate five arrays of the same size:
251 * req_power, max_power and granted_power. They are going to 252 * req_power, max_power, granted_power, extra_actor_power and
252 * be needed until this function returns. Allocate them all 253 * weighted_req_power. They are going to be needed until this
253 * in one go to simplify the allocation and deallocation 254 * function returns. Allocate them all in one go to simplify
254 * logic. 255 * the allocation and deallocation logic.
255 */ 256 */
256 BUILD_BUG_ON(sizeof(*req_power) != sizeof(*max_power)); 257 BUILD_BUG_ON(sizeof(*req_power) != sizeof(*max_power));
257 BUILD_BUG_ON(sizeof(*req_power) != sizeof(*granted_power)); 258 BUILD_BUG_ON(sizeof(*req_power) != sizeof(*granted_power));
258 BUILD_BUG_ON(sizeof(*req_power) != sizeof(*extra_actor_power)); 259 BUILD_BUG_ON(sizeof(*req_power) != sizeof(*extra_actor_power));
259 req_power = devm_kcalloc(&tz->device, num_actors * 4, 260 BUILD_BUG_ON(sizeof(*req_power) != sizeof(*weighted_req_power));
261 req_power = devm_kcalloc(&tz->device, num_actors * 5,
260 sizeof(*req_power), GFP_KERNEL); 262 sizeof(*req_power), GFP_KERNEL);
261 if (!req_power) { 263 if (!req_power) {
262 ret = -ENOMEM; 264 ret = -ENOMEM;
@@ -266,8 +268,10 @@ static int allocate_power(struct thermal_zone_device *tz,
266 max_power = &req_power[num_actors]; 268 max_power = &req_power[num_actors];
267 granted_power = &req_power[2 * num_actors]; 269 granted_power = &req_power[2 * num_actors];
268 extra_actor_power = &req_power[3 * num_actors]; 270 extra_actor_power = &req_power[3 * num_actors];
271 weighted_req_power = &req_power[4 * num_actors];
269 272
270 i = 0; 273 i = 0;
274 total_weighted_req_power = 0;
271 total_req_power = 0; 275 total_req_power = 0;
272 max_allocatable_power = 0; 276 max_allocatable_power = 0;
273 277
@@ -289,13 +293,14 @@ static int allocate_power(struct thermal_zone_device *tz,
289 else 293 else
290 weight = instance->weight; 294 weight = instance->weight;
291 295
292 req_power[i] = frac_to_int(weight * req_power[i]); 296 weighted_req_power[i] = frac_to_int(weight * req_power[i]);
293 297
294 if (power_actor_get_max_power(cdev, tz, &max_power[i])) 298 if (power_actor_get_max_power(cdev, tz, &max_power[i]))
295 continue; 299 continue;
296 300
297 total_req_power += req_power[i]; 301 total_req_power += req_power[i];
298 max_allocatable_power += max_power[i]; 302 max_allocatable_power += max_power[i];
303 total_weighted_req_power += weighted_req_power[i];
299 304
300 i++; 305 i++;
301 } 306 }
@@ -303,8 +308,9 @@ static int allocate_power(struct thermal_zone_device *tz,
303 power_range = pid_controller(tz, current_temp, control_temp, 308 power_range = pid_controller(tz, current_temp, control_temp,
304 max_allocatable_power); 309 max_allocatable_power);
305 310
306 divvy_up_power(req_power, max_power, num_actors, total_req_power, 311 divvy_up_power(weighted_req_power, max_power, num_actors,
307 power_range, granted_power, extra_actor_power); 312 total_weighted_req_power, power_range, granted_power,
313 extra_actor_power);
308 314
309 total_granted_power = 0; 315 total_granted_power = 0;
310 i = 0; 316 i = 0;