From: Lukasz Luba <lukasz.luba@arm.com>
To: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Cc: LKML <linux-kernel@vger.kernel.org>,
Linux PM <linux-pm@vger.kernel.org>,
Daniel Lezcano <daniel.lezcano@linaro.org>,
Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Subject: Re: [PATCH v1 07/16] thermal: gov_power_allocator: Eliminate a redundant variable
Date: Fri, 19 Apr 2024 10:56:48 +0100 [thread overview]
Message-ID: <3e23d9e5-001e-4f89-80c4-68e36fb756dc@arm.com> (raw)
In-Reply-To: <1913649.CQOukoFCf9@kreacher>
On 4/10/24 17:12, Rafael J. Wysocki wrote:
> From: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
>
> Notice that the passive field in struct thermal_zone_device is not
> used by the Power Allocator governor itself and so the ordering of
> its updates with respect to allow_maximum_power() or allocate_power()
> does not matter.
>
> Accordingly, make power_allocator_manage() update that field right
> before returning, which allows the current value of it to be passed
> directly to allow_maximum_power() without using the additional update
> variable that can be dropped.
>
> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
> ---
> drivers/thermal/gov_power_allocator.c | 9 +++------
> 1 file changed, 3 insertions(+), 6 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
> @@ -747,21 +747,18 @@ static void power_allocator_manage(struc
> {
> struct power_allocator_params *params = tz->governor_data;
> const struct thermal_trip *trip = params->trip_switch_on;
> - bool update;
>
> lockdep_assert_held(&tz->lock);
>
> if (trip && tz->temperature < trip->temperature) {
> - update = tz->passive;
> - tz->passive = 0;
> reset_pid_controller(params);
> - allow_maximum_power(tz, update);
> + allow_maximum_power(tz, tz->passive);
> + tz->passive = 0;
> return;
> }
>
> - tz->passive = 1;
> -
> allocate_power(tz, params->trip_max->temperature);
> + tz->passive = 1;
> }
>
> static struct thermal_governor thermal_gov_power_allocator = {
>
>
>
LGTM
Reviewed-by: Lukasz Luba <lukasz.luba@arm.com>
next prev parent reply other threads:[~2024-04-19 9:56 UTC|newest]
Thread overview: 53+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-10 15:41 [PATCH v1 00/16] thermal: core: Redesign the governor interface Rafael J. Wysocki
2024-04-10 16:04 ` [PATCH v1 02/16] thermal: gov_bang_bang: Use .trip_crossed() instead of .throttle() Rafael J. Wysocki
2024-04-19 9:34 ` Lukasz Luba
2024-04-23 17:04 ` Daniel Lezcano
2024-04-10 16:05 ` [PATCH v1 03/16] thermal: gov_bang_bang: Clean up thermal_zone_trip_update() Rafael J. Wysocki
2024-04-19 9:41 ` Lukasz Luba
2024-04-23 17:05 ` Daniel Lezcano
2024-04-10 16:06 ` [PATCH v1 04/16] thermal: gov_bang_bang: Fold thermal_zone_trip_update() into its caller Rafael J. Wysocki
2024-04-19 9:42 ` Lukasz Luba
2024-04-23 17:06 ` Daniel Lezcano
2024-04-10 16:08 ` [PATCH v1 05/16] thermal: core: Introduce .manage() callback for thermal governors Rafael J. Wysocki
2024-04-19 9:44 ` Lukasz Luba
2024-04-23 17:07 ` Daniel Lezcano
2024-04-10 16:10 ` [PATCH v1 06/16] thermal: gov_power_allocator: Use .manage() callback instead of .throttle() Rafael J. Wysocki
2024-04-19 9:50 ` Lukasz Luba
2024-04-10 16:10 ` [PATCH v1 01/16] thermal: core: Introduce .trip_crossed() callback for thermal governors Rafael J. Wysocki
2024-04-19 8:47 ` Lukasz Luba
2024-04-23 17:14 ` Daniel Lezcano
2024-04-23 17:25 ` Rafael J. Wysocki
2024-04-23 17:58 ` Daniel Lezcano
2024-04-10 16:12 ` [PATCH v1 07/16] thermal: gov_power_allocator: Eliminate a redundant variable Rafael J. Wysocki
2024-04-19 9:56 ` Lukasz Luba [this message]
2024-04-23 17:35 ` Daniel Lezcano
2024-04-23 17:54 ` Rafael J. Wysocki
2024-04-23 18:00 ` Daniel Lezcano
2024-04-23 18:05 ` Rafael J. Wysocki
2024-04-23 18:09 ` Daniel Lezcano
2024-04-10 16:13 ` [PATCH v1 08/16] thermal: gov_step_wise: Use .manage() callback instead of .throttle() Rafael J. Wysocki
2024-04-19 17:20 ` Lukasz Luba
2024-04-24 7:54 ` Daniel Lezcano
2024-04-10 16:43 ` [PATCH v1 09/16] thermal: gov_step_wise: Use trip thresholds instead of trip temperatures Rafael J. Wysocki
2024-04-19 19:11 ` Lukasz Luba
2024-04-24 7:03 ` Daniel Lezcano
2024-04-10 16:44 ` [PATCH v1 10/16] thermal: gov_step_wise: Clean up thermal_zone_trip_update() Rafael J. Wysocki
2024-04-19 18:21 ` Lukasz Luba
2024-04-10 16:57 ` [PATCH v1 11/16] thermal: gov_fair_share: Use .manage() callback instead of .throttle() Rafael J. Wysocki
2024-04-19 18:28 ` Lukasz Luba
2024-04-10 16:58 ` [PATCH v1 12/16] thermal: gov_fair_share: Use trip thresholds instead of trip temperatures Rafael J. Wysocki
2024-04-19 19:18 ` Lukasz Luba
2024-04-10 17:00 ` [PATCH v1 13/16] thermal: gov_fair_share: Eliminate unnecessary integer divisions Rafael J. Wysocki
2024-04-19 18:46 ` Lukasz Luba
2024-04-10 17:03 ` [PATCH v1 14/16] thermal: gov_user_space: Use .trip_crossed() instead of .throttle() Rafael J. Wysocki
2024-04-19 18:16 ` Lukasz Luba
2024-04-24 9:14 ` Daniel Lezcano
2024-04-24 11:32 ` Srinivas Pandruvada
2024-04-24 11:34 ` Daniel Lezcano
2024-04-24 11:44 ` Srinivas Pandruvada
2024-04-10 17:42 ` [PATCH v1 15/16] thermal: core: Drop the .throttle() governor callback Rafael J. Wysocki
2024-04-19 18:50 ` Lukasz Luba
2024-04-24 9:11 ` Daniel Lezcano
2024-04-10 17:44 ` [PATCH v1 16/16] thermal: core: Relocate critical and hot trip handling Rafael J. Wysocki
2024-04-19 18:52 ` Lukasz Luba
2024-04-24 9:17 ` Daniel Lezcano
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