diff options
| author | Lukasz Luba <lukasz.luba@arm.com> | 2023-12-20 23:17:53 +0000 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2023-12-29 18:01:01 +0100 |
| commit | a3cd6db4cc2ed70fc3468cdb5eb20745e7fefba9 (patch) | |
| tree | c9caa7d11209e83ea86486ff9c5c788f948fcadb /drivers/thermal | |
| parent | bfc57bd1685981730bfe9802d9de7603a0a43bc4 (diff) | |
thermal: gov_power_allocator: Support new update callback of weights
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>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/thermal')
| -rw-r--r-- | drivers/thermal/gov_power_allocator.c | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/drivers/thermal/gov_power_allocator.c b/drivers/thermal/gov_power_allocator.c index b5ec60ae7efd..7b6aa265ff6a 100644 --- a/drivers/thermal/gov_power_allocator.c +++ b/drivers/thermal/gov_power_allocator.c @@ -77,6 +77,7 @@ struct power_actor { * @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: internal buffer size, to avoid runtime re-calculation * @power: buffer for all power actors internal power information @@ -88,6 +89,7 @@ struct power_allocator_params { u32 sustainable_power; const struct thermal_trip *trip_switch_on; const struct thermal_trip *trip_max; + int total_weight; unsigned int num_actors; unsigned int buffer_size; struct power_actor *power; @@ -405,16 +407,11 @@ static int allocate_power(struct thermal_zone_device *tz, int control_temp) u32 total_granted_power = 0; u32 total_req_power = 0; u32 power_range, weight; - int total_weight = 0; int i = 0, ret; if (!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(power, 0, params->buffer_size); @@ -430,7 +427,7 @@ static int allocate_power(struct thermal_zone_device *tz, int control_temp) if (ret) continue; - if (!total_weight) + if (!params->total_weight) weight = 1 << FRAC_BITS; else weight = instance->weight; @@ -651,6 +648,12 @@ static void power_allocator_update_tz(struct thermal_zone_device *tz, allocate_actors_buffer(params, num_actors); break; + case THERMAL_INSTANCE_WEIGHT_CHANGED: + 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; } |