| Message ID | 1815410.VLH7GnMWUR@kreacher (mailing list archive) |
|---|---|
| State | In Next |
| Delegated to: | Rafael Wysocki |
| Headers | show |
| Series | thermal: core: Redesign the governor interface | expand |
On 4/10/24 17:10, Rafael J. Wysocki wrote: > From: Rafael J. Wysocki <rafael.j.wysocki@intel.com> > > The Power Allocator governor really only wants to be called once per > thermal zone update and it does a special check to skip the extra, > from its perspective, invocations of the .throttle() callback. > > Make it use .manage() instead of .throttle(). > > Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> > --- > drivers/thermal/gov_power_allocator.c | 24 +++++++----------------- > 1 file changed, 7 insertions(+), 17 deletions(-) > > Index: linux-pm/drivers/thermal/gov_power_allocator.c > =================================================================== > --- linux-pm.orig/drivers/thermal/gov_power_allocator.c > +++ linux-pm/drivers/thermal/gov_power_allocator.c > @@ -395,7 +395,7 @@ static void divvy_up_power(struct power_ > } > } > > -static int allocate_power(struct thermal_zone_device *tz, int control_temp) > +static void allocate_power(struct thermal_zone_device *tz, int control_temp) > { > struct power_allocator_params *params = tz->governor_data; > unsigned int num_actors = params->num_actors; > @@ -410,7 +410,7 @@ static int allocate_power(struct thermal > int i = 0, ret; > > if (!num_actors) > - return -ENODEV; > + return; > > /* Clean all buffers for new power estimations */ > memset(power, 0, params->buffer_size); > @@ -471,8 +471,6 @@ static int allocate_power(struct thermal > num_actors, power_range, > max_allocatable_power, tz->temperature, > control_temp - tz->temperature); > - > - return 0; > } > > /** > @@ -745,40 +743,32 @@ static void power_allocator_unbind(struc > tz->governor_data = NULL; > } > > -static int power_allocator_throttle(struct thermal_zone_device *tz, > - const struct thermal_trip *trip) > +static void power_allocator_manage(struct thermal_zone_device *tz) > { > struct power_allocator_params *params = tz->governor_data; > + const struct thermal_trip *trip = params->trip_switch_on; > bool update; > > lockdep_assert_held(&tz->lock); > > - /* > - * We get called for every trip point but we only need to do > - * our calculations once > - */ > - if (trip != params->trip_max) > - return 0; > - > - trip = params->trip_switch_on; > if (trip && tz->temperature < trip->temperature) { > update = tz->passive; > tz->passive = 0; > reset_pid_controller(params); > allow_maximum_power(tz, update); > - return 0; > + return; > } > > tz->passive = 1; > > - return allocate_power(tz, params->trip_max->temperature); > + allocate_power(tz, params->trip_max->temperature); > } > > static struct thermal_governor thermal_gov_power_allocator = { > .name = "power_allocator", > .bind_to_tz = power_allocator_bind, > .unbind_from_tz = power_allocator_unbind, > - .throttle = power_allocator_throttle, > + .manage = power_allocator_manage, > .update_tz = power_allocator_update_tz, > }; > THERMAL_GOVERNOR_DECLARE(thermal_gov_power_allocator); > > > LGTM Reviewed-by: Lukasz Luba <lukasz.luba@arm.com>
Index: linux-pm/drivers/thermal/gov_power_allocator.c =================================================================== --- linux-pm.orig/drivers/thermal/gov_power_allocator.c +++ linux-pm/drivers/thermal/gov_power_allocator.c @@ -395,7 +395,7 @@ static void divvy_up_power(struct power_ } } -static int allocate_power(struct thermal_zone_device *tz, int control_temp) +static void allocate_power(struct thermal_zone_device *tz, int control_temp) { struct power_allocator_params *params = tz->governor_data; unsigned int num_actors = params->num_actors; @@ -410,7 +410,7 @@ static int allocate_power(struct thermal int i = 0, ret; if (!num_actors) - return -ENODEV; + return; /* Clean all buffers for new power estimations */ memset(power, 0, params->buffer_size); @@ -471,8 +471,6 @@ static int allocate_power(struct thermal num_actors, power_range, max_allocatable_power, tz->temperature, control_temp - tz->temperature); - - return 0; } /** @@ -745,40 +743,32 @@ static void power_allocator_unbind(struc tz->governor_data = NULL; } -static int power_allocator_throttle(struct thermal_zone_device *tz, - const struct thermal_trip *trip) +static void power_allocator_manage(struct thermal_zone_device *tz) { struct power_allocator_params *params = tz->governor_data; + const struct thermal_trip *trip = params->trip_switch_on; bool update; lockdep_assert_held(&tz->lock); - /* - * We get called for every trip point but we only need to do - * our calculations once - */ - if (trip != params->trip_max) - return 0; - - trip = params->trip_switch_on; if (trip && tz->temperature < trip->temperature) { update = tz->passive; tz->passive = 0; reset_pid_controller(params); allow_maximum_power(tz, update); - return 0; + return; } tz->passive = 1; - return allocate_power(tz, params->trip_max->temperature); + allocate_power(tz, params->trip_max->temperature); } static struct thermal_governor thermal_gov_power_allocator = { .name = "power_allocator", .bind_to_tz = power_allocator_bind, .unbind_from_tz = power_allocator_unbind, - .throttle = power_allocator_throttle, + .manage = power_allocator_manage, .update_tz = power_allocator_update_tz, }; THERMAL_GOVERNOR_DECLARE(thermal_gov_power_allocator);