From patchwork Tue Sep 10 09:33:08 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Rafael J. 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Wysocki" To: Linux PM Cc: LKML , Daniel Lezcano , Lukasz Luba , Zhang Rui Subject: [PATCH for 6.13 v1 6/8] thermal: core: Add function for moving trips to sorted lists Date: Tue, 10 Sep 2024 11:33:08 +0200 Message-ID: <7708886.EvYhyI6sBW@rjwysocki.net> In-Reply-To: <4920970.GXAFRqVoOG@rjwysocki.net> References: <4920970.GXAFRqVoOG@rjwysocki.net> Precedence: bulk X-Mailing-List: linux-pm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-CLIENT-IP: 195.136.19.94 X-CLIENT-HOSTNAME: 195.136.19.94 X-VADE-SPAMSTATE: spam:low X-VADE-SPAMCAUSE: gggruggvucftvghtrhhoucdtuddrgeeftddrudeiledgudejucetufdoteggodetrfdotffvucfrrhhofhhilhgvmecujffqoffgrffnpdggtffipffknecuuegrihhlohhuthemucduhedtnecusecvtfgvtghiphhivghnthhsucdlqddutddtmdenogfuphgrmhfkphculdeftddtmdenucfjughrpefhvfevufffkfgjfhgggfgtsehtufertddttdejnecuhfhrohhmpedftfgrfhgrvghlucflrdcuhgihshhotghkihdfuceorhhjfiesrhhjfiihshhotghkihdrnhgvtheqnecuggftrfgrthhtvghrnhepvdffueeitdfgvddtudegueejtdffteetgeefkeffvdeftddttdeuhfegfedvjefhnecukfhppeduleehrddufeeirdduledrleegnecuufhprghmkfhppeduleehrddufeeirdduledrleegnecuvehluhhsthgvrhfuihiivgeptdenucfrrghrrghmpehinhgvthepudelhedrudefiedrudelrdelgedphhgvlhhopehkrhgvrggthhgvrhdrlhhotggrlhhnvghtpdhmrghilhhfrhhomheprhhjfiesrhhjfiihshhotghkihdrnhgvthdpnhgspghrtghpthhtohephedprhgtphhtthhopehlihhnuhigqdhpmhesvhhgvghrrdhkvghrnhgvlhdrohhrghdprhgtphhtthhopehlihhnuhigqdhkvghrnhgvlhesvhhgvghrrdhkvghrnhgvlhdrohhrghdprhgtphhtthhopegurghnihgvlhdrlhgviigtrghnoheslhhinhgrrhhordhorhhgpdhrtghpthhtoheplhhukhgrshiirdhluhgsrgesrghrmhdrtghomhdprhgtphhtthhopehruhhirdiihhgrnhhgsehinhhtvghlrdgtohhm X-DCC--Metrics: v370.home.net.pl 1024; Body=5 Fuz1=5 Fuz2=5 From: Rafael J. Wysocki Subsequently, trips will be moved between sorted lists in multiple places, so replace add_trip_to_sorted_list() with an analogous function that will move a given trip to a given sorted list. Call the new function thermal_trip_move_to_sorted_list() and put it into the trips-related part of the code. To allow list_move() used in the new function to work, initialize the list_node fields of trip descriptors so they are always valid. No intentional functional impact. Signed-off-by: Rafael J. Wysocki --- drivers/thermal/thermal_core.c | 30 ++++++++++-------------------- drivers/thermal/thermal_core.h | 2 ++ drivers/thermal/thermal_trip.c | 15 +++++++++++++++ 3 files changed, 27 insertions(+), 20 deletions(-) Index: linux-pm/drivers/thermal/thermal_core.c =================================================================== --- linux-pm.orig/drivers/thermal/thermal_core.c +++ linux-pm/drivers/thermal/thermal_core.c @@ -420,21 +420,6 @@ static void handle_critical_trips(struct tz->ops.hot(tz); } -static void add_trip_to_sorted_list(struct thermal_trip_desc *td, - struct list_head *list) -{ - struct thermal_trip_desc *entry; - - /* Assume that the new entry is likely to be the last one. */ - list_for_each_entry_reverse(entry, list, list_node) { - if (entry->notify_temp <= td->notify_temp) { - list_add(&td->list_node, &entry->list_node); - return; - } - } - list_add(&td->list_node, list); -} - static void handle_thermal_trip(struct thermal_zone_device *tz, struct thermal_trip_desc *td, struct list_head *way_up_list, @@ -465,7 +450,7 @@ static void handle_thermal_trip(struct t */ if (tz->temperature < trip->temperature - trip->hysteresis) { td->notify_temp = trip->temperature - trip->hysteresis; - add_trip_to_sorted_list(td, way_down_list); + thermal_trip_move_to_sorted_list(td, way_down_list); if (trip->type == THERMAL_TRIP_PASSIVE) { tz->passive--; @@ -481,7 +466,7 @@ static void handle_thermal_trip(struct t * threshold is then set to the low temperature of the trip. */ td->notify_temp = trip->temperature; - add_trip_to_sorted_list(td, way_up_list); + thermal_trip_move_to_sorted_list(td, way_up_list); td->threshold -= trip->hysteresis; @@ -550,7 +535,7 @@ void __thermal_zone_device_update(struct enum thermal_notify_event event) { struct thermal_governor *governor = thermal_get_tz_governor(tz); - struct thermal_trip_desc *td; + struct thermal_trip_desc *td, *next; LIST_HEAD(way_down_list); LIST_HEAD(way_up_list); int low = -INT_MAX, high = INT_MAX; @@ -596,11 +581,15 @@ void __thermal_zone_device_update(struct thermal_zone_set_trips(tz, low, high); - list_for_each_entry(td, &way_up_list, list_node) + list_for_each_entry_safe(td, next, &way_up_list, list_node) { thermal_trip_crossed(tz, &td->trip, governor, true); + list_del_init(&td->list_node); + } - list_for_each_entry_reverse(td, &way_down_list, list_node) + list_for_each_entry_safe_reverse(td, next, &way_down_list, list_node) { thermal_trip_crossed(tz, &td->trip, governor, false); + list_del_init(&td->list_node); + } if (governor->manage) governor->manage(tz); @@ -1443,6 +1432,7 @@ thermal_zone_device_register_with_trips( for_each_trip_desc(tz, td) { td->trip = *trip++; INIT_LIST_HEAD(&td->thermal_instances); + INIT_LIST_HEAD(&td->list_node); /* * Mark all thresholds as invalid to start with even though * this only matters for the trips that start as invalid and Index: linux-pm/drivers/thermal/thermal_core.h =================================================================== --- linux-pm.orig/drivers/thermal/thermal_core.h +++ linux-pm/drivers/thermal/thermal_core.h @@ -256,6 +256,8 @@ const char *thermal_trip_type_name(enum void thermal_zone_set_trips(struct thermal_zone_device *tz, int low, int high); int thermal_zone_trip_id(const struct thermal_zone_device *tz, const struct thermal_trip *trip); +void thermal_trip_move_to_sorted_list(struct thermal_trip_desc *td, + struct list_head *list); int __thermal_zone_get_temp(struct thermal_zone_device *tz, int *temp); void thermal_zone_trip_down(struct thermal_zone_device *tz, const struct thermal_trip *trip); Index: linux-pm/drivers/thermal/thermal_trip.c =================================================================== --- linux-pm.orig/drivers/thermal/thermal_trip.c +++ linux-pm/drivers/thermal/thermal_trip.c @@ -93,6 +93,21 @@ int thermal_zone_trip_id(const struct th return trip_to_trip_desc(trip) - tz->trips; } +void thermal_trip_move_to_sorted_list(struct thermal_trip_desc *td, + struct list_head *list) +{ + struct thermal_trip_desc *entry; + + /* Assume that the new entry is likely to be the last one. */ + list_for_each_entry_reverse(entry, list, list_node) { + if (entry->notify_temp <= td->notify_temp) { + list_move(&td->list_node, &entry->list_node); + return; + } + } + list_move(&td->list_node, list); +} + void thermal_zone_set_trip_hyst(struct thermal_zone_device *tz, struct thermal_trip *trip, int hyst) {