Messages in this thread Patch in this message | | | From | Lukasz Luba <> | Subject | [PATCH v2 8/8] thermal: gov_power_allocator: Support new update callback of weights | Date | Tue, 12 Dec 2023 13:48:44 +0000 |
| |
When the thermal instance's weight is updated from the sysfs the governor update_tz() callback is triggered. Implement proper reaction to this event in the IPA, which would save CPU cycles spent in throttle(). This will speed-up the main throttle() IPA function and clean it up a bit.
Signed-off-by: Lukasz Luba <lukasz.luba@arm.com> --- drivers/thermal/gov_power_allocator.c | 15 +++++++++------ 1 file changed, 9 insertions(+), 6 deletions(-)
diff --git a/drivers/thermal/gov_power_allocator.c b/drivers/thermal/gov_power_allocator.c index 574aa5822112..a9f1549e6355 100644 --- a/drivers/thermal/gov_power_allocator.c +++ b/drivers/thermal/gov_power_allocator.c @@ -61,6 +61,7 @@ static inline s64 div_frac(s64 x, s64 y) * @trip_switch_on should be NULL. * @trip_max: last passive trip point of the thermal zone. The * temperature we are controlling for. + * @total_weight: Sum of all thermal instances weights * @num_actors: number of cooling devices supporting IPA callbacks * @buffer_size: IPA internal buffer size * @req_power: IPA buffer for requested power @@ -76,6 +77,7 @@ struct power_allocator_params { u32 sustainable_power; const struct thermal_trip *trip_switch_on; const struct thermal_trip *trip_max; + int total_weight; int num_actors; int buffer_size; u32 *req_power; @@ -403,16 +405,11 @@ static int allocate_power(struct thermal_zone_device *tz, int control_temp) u32 total_req_power = 0; u32 *weighted_req_power; u32 power_range, weight; - int total_weight = 0; int i = 0; if (!params->num_actors) return -ENODEV; - list_for_each_entry(instance, &tz->thermal_instances, tz_node) - if (power_actor_is_valid(params, instance)) - total_weight += instance->weight; - /* Clean all buffers for new power estimations */ memset(params->req_power, 0, params->buffer_size); @@ -430,7 +427,7 @@ static int allocate_power(struct thermal_zone_device *tz, int control_temp) if (cdev->ops->get_requested_power(cdev, &req_power[i])) continue; - if (!total_weight) + if (!params->total_weight) weight = 1 << FRAC_BITS; else weight = instance->weight; @@ -666,6 +663,12 @@ static void power_allocator_update_tz(struct thermal_zone_device *tz, allocate_actors_buffer(params, num_actors); break; + case THERMAL_INSTANCE_WEIGHT_UPDATE: + params->total_weight = 0; + list_for_each_entry(instance, &tz->thermal_instances, tz_node) + if (power_actor_is_valid(params, instance)) + params->total_weight += instance->weight; + break; default: break; } -- 2.25.1
| |