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Date: Fri, 23 Sep 2022 15:49:35 +0100
From: Lukasz Luba <lukasz.luba@....com>
To: Daniel Lezcano <daniel.lezcano@...aro.org>
Cc: linux-kernel@...r.kernel.org, linux-pm@...r.kernel.org,
rui.zhang@...el.com, Amit Kucheria <amitk@...nel.org>,
rafael@...nel.org
Subject: Re: [PATCH v4 05/30] thermal/core/governors: Use
thermal_zone_get_trip() instead of ops functions
Hi Daniel,
On 9/21/22 10:42, Daniel Lezcano wrote:
> The governors are using the ops->get_trip_* functions, Replace these
> calls with thermal_zone_get_trip().
>
> Signed-off-by: Daniel Lezcano <daniel.lezcano@...aro.org>
> ---
> drivers/thermal/gov_bang_bang.c | 23 +++++-------
> drivers/thermal/gov_fair_share.c | 18 ++++------
> drivers/thermal/gov_power_allocator.c | 51 ++++++++++++---------------
> drivers/thermal/gov_step_wise.c | 22 ++++++------
> 4 files changed, 47 insertions(+), 67 deletions(-)
>
[snip]
> diff --git a/drivers/thermal/gov_power_allocator.c b/drivers/thermal/gov_power_allocator.c
> index 2d1aeaba38a8..2ef86ced4c7c 100644
> --- a/drivers/thermal/gov_power_allocator.c
> +++ b/drivers/thermal/gov_power_allocator.c
> @@ -125,16 +125,15 @@ static void estimate_pid_constants(struct thermal_zone_device *tz,
> u32 sustainable_power, int trip_switch_on,
> int control_temp)
> {
> + struct thermal_trip trip;
> + u32 temperature_threshold = control_temp;
> int ret;
> - int switch_on_temp;
> - u32 temperature_threshold;
> s32 k_i;
>
> - ret = tz->ops->get_trip_temp(tz, trip_switch_on, &switch_on_temp);
> - if (ret)
> - switch_on_temp = 0;
> + ret = thermal_zone_get_trip(tz, trip_switch_on, &trip);
> + if (!ret)
> + temperature_threshold -= trip.temperature;
>
> - temperature_threshold = control_temp - switch_on_temp;
> /*
> * estimate_pid_constants() tries to find appropriate default
> * values for thermal zones that don't provide them. If a
> @@ -520,10 +519,10 @@ static void get_governor_trips(struct thermal_zone_device *tz,
> last_passive = INVALID_TRIP;
>
> for (i = 0; i < tz->num_trips; i++) {
> - enum thermal_trip_type type;
> + struct thermal_trip trip;
> int ret;
>
> - ret = tz->ops->get_trip_type(tz, i, &type);
> + ret = thermal_zone_get_trip(tz, i, &trip);
> if (ret) {
> dev_warn(&tz->device,
> "Failed to get trip point %d type: %d\n", i,
> @@ -531,14 +530,14 @@ static void get_governor_trips(struct thermal_zone_device *tz,
> continue;
> }
>
> - if (type == THERMAL_TRIP_PASSIVE) {
> + if (trip.type == THERMAL_TRIP_PASSIVE) {
> if (!found_first_passive) {
> params->trip_switch_on = i;
> found_first_passive = true;
> } else {
> last_passive = i;
> }
> - } else if (type == THERMAL_TRIP_ACTIVE) {
> + } else if (trip.type == THERMAL_TRIP_ACTIVE) {
> last_active = i;
> } else {
> break;
> @@ -633,7 +632,7 @@ static int power_allocator_bind(struct thermal_zone_device *tz)
> {
> int ret;
> struct power_allocator_params *params;
> - int control_temp;
> + struct thermal_trip trip;
>
> ret = check_power_actors(tz);
> if (ret)
> @@ -659,13 +658,12 @@ static int power_allocator_bind(struct thermal_zone_device *tz)
> get_governor_trips(tz, params);
>
> if (tz->num_trips > 0) {
> - ret = tz->ops->get_trip_temp(tz,
> - params->trip_max_desired_temperature,
> - &control_temp);
> + ret = thermal_zone_get_trip(tz, params->trip_max_desired_temperature,
> + &trip);
> if (!ret)
> estimate_pid_constants(tz, tz->tzp->sustainable_power,
> params->trip_switch_on,
> - control_temp);
> + trip.temperature);
> }
>
> reset_pid_controller(params);
> @@ -695,11 +693,11 @@ static void power_allocator_unbind(struct thermal_zone_device *tz)
> tz->governor_data = NULL;
> }
>
> -static int power_allocator_throttle(struct thermal_zone_device *tz, int trip)
> +static int power_allocator_throttle(struct thermal_zone_device *tz, int trip_id)
> {
> - int ret;
> - int switch_on_temp, control_temp;
> struct power_allocator_params *params = tz->governor_data;
> + struct thermal_trip trip;
> + int ret;
> bool update;
>
> lockdep_assert_held(&tz->lock);
> @@ -708,13 +706,12 @@ static int power_allocator_throttle(struct thermal_zone_device *tz, int trip)
> * We get called for every trip point but we only need to do
> * our calculations once
> */
> - if (trip != params->trip_max_desired_temperature)
> + if (trip_id != params->trip_max_desired_temperature)
> return 0;
>
> - ret = tz->ops->get_trip_temp(tz, params->trip_switch_on,
> - &switch_on_temp);
> - if (!ret && (tz->temperature < switch_on_temp)) {
> - update = (tz->last_temperature >= switch_on_temp);
> + ret = thermal_zone_get_trip(tz, params->trip_switch_on, &trip);
> + if (!ret && (tz->temperature < trip.temperature)) {
> + update = (tz->last_temperature >= trip.temperature);
> tz->passive = 0;
> reset_pid_controller(params);
> allow_maximum_power(tz, update);
> @@ -723,16 +720,14 @@ static int power_allocator_throttle(struct thermal_zone_device *tz, int trip)
>
> tz->passive = 1;
>
> - ret = tz->ops->get_trip_temp(tz, params->trip_max_desired_temperature,
> - &control_temp);
> + ret = thermal_zone_get_trip(tz, params->trip_max_desired_temperature, &trip);
> if (ret) {
> - dev_warn(&tz->device,
> - "Failed to get the maximum desired temperature: %d\n",
> + dev_warn(&tz->device, "Failed to get the maximum desired temperature: %d\n",
> ret);
> return ret;
> }
>
> - return allocate_power(tz, control_temp);
> + return allocate_power(tz, trip.temperature);
> }
>
> static struct thermal_governor thermal_gov_power_allocator = {
this part of IPA LGTM
Reviewed-by: Lukasz Luba <lukasz.luba@....com>
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