From patchwork Wed Feb 14 12:28:57 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Rafael J. Wysocki" X-Patchwork-Id: 773269 Received: from cloudserver094114.home.pl (cloudserver094114.home.pl [79.96.170.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id BBA105337E; Wed, 14 Feb 2024 12:50:05 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=79.96.170.134 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1707915008; cv=none; b=f/CTy2rNuzNrYJMH3JNVask6Fhs32U8mQcXLgrbg9yUG0Os6ogfbPClNmGKLIx73voJUnLJU3JHksWRM39by+yYoL24fixxxS7TcmCYMAZc2z5ou2GidTnldV0+LN96r/OKB+KomhwAs8nOh+DKSCor710r8ma/eLGHAyZixisc= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1707915008; c=relaxed/simple; bh=qxJhbOKvEv1aOswKgO4WuniZESROcDNZKcfH2VkqaSQ=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=na/7HGvLSsIw19P2s97yz3KdSn8K6WToMqfPvxpGXG5WQvzk2327oD34heAD5PWlFRxuGETESZdN0G0SWTXwx/lxehQHnbCgsJCEHKS/Q+OnChnolyXmfz6wq5w8pe8z/qSrkZ0x42tEnbt4euDGwakitp1SrxG5JnOb8Go0Zmk= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=rjwysocki.net; spf=pass smtp.mailfrom=rjwysocki.net; arc=none smtp.client-ip=79.96.170.134 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=rjwysocki.net Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=rjwysocki.net Received: from localhost (127.0.0.1) (HELO v370.home.net.pl) by /usr/run/smtp (/usr/run/postfix/private/idea_relay_lmtp) via UNIX with SMTP (IdeaSmtpServer 5.4.0) id d5b3f5452e748b4f; Wed, 14 Feb 2024 13:49:58 +0100 Received: from kreacher.localnet (unknown [195.136.19.94]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by cloudserver094114.home.pl (Postfix) with ESMTPSA id D3880669DB7; Wed, 14 Feb 2024 13:49:57 +0100 (CET) From: "Rafael J. Wysocki" To: Linux PM Cc: Daniel Lezcano , LKML , Linux ACPI , Lukasz Luba , Zhang Rui , Srinivas Pandruvada , Stanislaw Gruszka , AngeloGioacchino Del Regno , Shawn Guo , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , NXP Linux Team Subject: [PATCH v2 1/6] thermal: core: Store zone trips table in struct thermal_zone_device Date: Wed, 14 Feb 2024 13:28:57 +0100 Message-ID: <1883976.tdWV9SEqCh@kreacher> In-Reply-To: <4551531.LvFx2qVVIh@kreacher> References: <4551531.LvFx2qVVIh@kreacher> 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: clean X-VADE-SPAMCAUSE: gggruggvucftvghtrhhoucdtuddrgedvledrudejgdeggecutefuodetggdotefrodftvfcurfhrohhfihhlvgemucfjqffogffrnfdpggftiffpkfenuceurghilhhouhhtmecuudehtdenucesvcftvggtihhpihgvnhhtshculddquddttddmnecujfgurhephffvvefufffkjghfggfgtgesthfuredttddtjeenucfhrhhomhepfdftrghfrggvlhculfdrucghhihsohgtkhhifdcuoehrjhifsehrjhifhihsohgtkhhirdhnvghtqeenucggtffrrghtthgvrhhnpedvffeuiedtgfdvtddugeeujedtffetteegfeekffdvfedttddtuefhgeefvdejhfenucfkphepudelhedrudefiedrudelrdelgeenucevlhhushhtvghrufhiiigvpedtnecurfgrrhgrmhepihhnvghtpeduleehrddufeeirdduledrleegpdhhvghlohepkhhrvggrtghhvghrrdhlohgtrghlnhgvthdpmhgrihhlfhhrohhmpedftfgrfhgrvghlucflrdcuhgihshhotghkihdfuceorhhjfiesrhhjfiihshhotghkihdrnhgvtheqpdhnsggprhgtphhtthhopedugedprhgtphhtthhopehlihhnuhigqdhpmhesvhhgvghrrdhkvghrnhgvlhdrohhrghdprhgtphhtthhopegurghnihgvlhdrlhgviigtrghnoheslhhinhgrrhhordhorhhgpdhrtghpthhtoheplhhinhhugidqkhgvrhhnvghlsehvghgvrhdrkhgvrhhnvghlrdhorhhgpdhrtghpthhtoheplhhinhhugidqrggtphhisehvghgvrhdrkhgvrhhnvghlrdhorhhgpdhrtghpthhtoheplhhukhgrshiirdhluhgsrgesrghrmhdrtghomhdprhgtphhtthhopehruhhirdiihhgrnhhgsehinhhtvghlrdgtohhm X-DCC--Metrics: v370.home.net.pl 1024; Body=14 Fuz1=14 Fuz2=14 From: Rafael J. Wysocki The current code expects thermal zone creators to pass a pointer to a writable trips table to thermal_zone_device_register_with_trips() and that trips table is then used by the thermal core going forward. Consequently, the callers of thermal_zone_device_register_with_trips() are required to hold on to the trips table passed to it until the given thermal zone is unregistered, at which point the trips table can be freed, but at the same time they are not expected to access that table directly. This is both error prone and confusing. To address it, turn the trips table pointer in struct thermal_zone_device into a flex array (counted by its num_trips field), allocate it during thermal zone device allocation and copy the contents of the trips table supplied by the zone creator (which can be const now) into it, which will allow the callers of thermal_zone_device_register_with_trips() to drop their trip tables right after the zone registration. This requires the imx thermal driver to be adjusted to store the new temperature in its internal trips table in imx_set_trip_temp(), because it will be separate from the core's trips table now and it has to be explicitly kept in sync with the latter. Signed-off-by: Rafael J. Wysocki Reviewed-by: Stanislaw Gruszka Reviewed-by: Daniel Lezcano --- v1 -> v2: * Rebase. * Drop all of the redundant trips[] checks against NULL. * Add imx change to still allow it to use its local trips table. * Add R-by from Stanislaw (which is still applicable IMV). --- drivers/thermal/imx_thermal.c | 1 + drivers/thermal/thermal_core.c | 17 ++++++++--------- drivers/thermal/thermal_trip.c | 2 +- include/linux/thermal.h | 10 +++++----- 4 files changed, 15 insertions(+), 15 deletions(-) Index: linux-pm/include/linux/thermal.h =================================================================== --- linux-pm.orig/include/linux/thermal.h +++ linux-pm/include/linux/thermal.h @@ -137,7 +137,6 @@ struct thermal_cooling_device { * @trip_hyst_attrs: attributes for trip points for sysfs: trip hysteresis * @mode: current mode of this thermal zone * @devdata: private pointer for device private data - * @trips: an array of struct thermal_trip * @num_trips: number of trip points the thermal zone supports * @passive_delay_jiffies: number of jiffies to wait between polls when * performing passive cooling. @@ -167,6 +166,7 @@ struct thermal_cooling_device { * @poll_queue: delayed work for polling * @notify_event: Last notification event * @suspended: thermal zone suspend indicator + * @trips: array of struct thermal_trip objects */ struct thermal_zone_device { int id; @@ -179,7 +179,6 @@ struct thermal_zone_device { struct thermal_attr *trip_hyst_attrs; enum thermal_device_mode mode; void *devdata; - struct thermal_trip *trips; int num_trips; unsigned long passive_delay_jiffies; unsigned long polling_delay_jiffies; @@ -200,10 +199,11 @@ struct thermal_zone_device { struct list_head node; struct delayed_work poll_queue; enum thermal_notify_event notify_event; + bool suspended; #ifdef CONFIG_THERMAL_DEBUGFS struct thermal_debugfs *debugfs; #endif - bool suspended; + struct thermal_trip trips[] __counted_by(num_trips); }; /** @@ -322,7 +322,7 @@ int thermal_zone_get_crit_temp(struct th #ifdef CONFIG_THERMAL struct thermal_zone_device *thermal_zone_device_register_with_trips( const char *type, - struct thermal_trip *trips, + const struct thermal_trip *trips, int num_trips, void *devdata, struct thermal_zone_device_ops *ops, const struct thermal_zone_params *tzp, @@ -381,7 +381,7 @@ void thermal_zone_device_critical(struct #else static inline struct thermal_zone_device *thermal_zone_device_register_with_trips( const char *type, - struct thermal_trip *trips, + const struct thermal_trip *trips, int num_trips, void *devdata, struct thermal_zone_device_ops *ops, const struct thermal_zone_params *tzp, Index: linux-pm/drivers/thermal/thermal_core.c =================================================================== --- linux-pm.orig/drivers/thermal/thermal_core.c +++ linux-pm/drivers/thermal/thermal_core.c @@ -1227,9 +1227,6 @@ int thermal_zone_get_crit_temp(struct th if (tz->ops->get_crit_temp) return tz->ops->get_crit_temp(tz, temp); - if (!tz->trips) - return -EINVAL; - mutex_lock(&tz->lock); for (i = 0; i < tz->num_trips; i++) { @@ -1271,10 +1268,12 @@ EXPORT_SYMBOL_GPL(thermal_zone_get_crit_ * IS_ERR*() helpers. */ struct thermal_zone_device * -thermal_zone_device_register_with_trips(const char *type, struct thermal_trip *trips, int num_trips, - void *devdata, struct thermal_zone_device_ops *ops, - const struct thermal_zone_params *tzp, int passive_delay, - int polling_delay) +thermal_zone_device_register_with_trips(const char *type, + const struct thermal_trip *trips, + int num_trips, void *devdata, + struct thermal_zone_device_ops *ops, + const struct thermal_zone_params *tzp, + int passive_delay, int polling_delay) { struct thermal_zone_device *tz; int id; @@ -1308,7 +1307,7 @@ thermal_zone_device_register_with_trips( if (!thermal_class) return ERR_PTR(-ENODEV); - tz = kzalloc(sizeof(*tz), GFP_KERNEL); + tz = kzalloc(struct_size(tz, trips, num_trips), GFP_KERNEL); if (!tz) return ERR_PTR(-ENOMEM); @@ -1340,7 +1339,7 @@ thermal_zone_device_register_with_trips( tz->ops = ops; tz->device.class = thermal_class; tz->devdata = devdata; - tz->trips = trips; + memcpy(tz->trips, trips, num_trips * sizeof(*trips)); tz->num_trips = num_trips; thermal_set_delay_jiffies(&tz->passive_delay_jiffies, passive_delay); Index: linux-pm/drivers/thermal/imx_thermal.c =================================================================== --- linux-pm.orig/drivers/thermal/imx_thermal.c +++ linux-pm/drivers/thermal/imx_thermal.c @@ -355,6 +355,7 @@ static int imx_set_trip_temp(struct ther return -EINVAL; imx_set_alarm_temp(data, temp); + trips[IMX_TRIP_PASSIVE].temperature = temp; pm_runtime_put(data->dev); Index: linux-pm/drivers/thermal/thermal_trip.c =================================================================== --- linux-pm.orig/drivers/thermal/thermal_trip.c +++ linux-pm/drivers/thermal/thermal_trip.c @@ -122,7 +122,7 @@ void __thermal_zone_set_trips(struct the int __thermal_zone_get_trip(struct thermal_zone_device *tz, int trip_id, struct thermal_trip *trip) { - if (!tz || !tz->trips || trip_id < 0 || trip_id >= tz->num_trips || !trip) + if (!tz || trip_id < 0 || trip_id >= tz->num_trips || !trip) return -EINVAL; *trip = tz->trips[trip_id]; From patchwork Wed Feb 14 12:30:23 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Rafael J. Wysocki" X-Patchwork-Id: 772792 Received: from cloudserver094114.home.pl (cloudserver094114.home.pl [79.96.170.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A2E5D52F72; Wed, 14 Feb 2024 12:50:04 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=79.96.170.134 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1707915007; cv=none; b=k7QGPg0oihQshW5Q8ISbYq2h68jpRHD25AKc1KWJCKHlsgh0azaWwgmrpEn2E1fHB4pNtvMQWlhxFa4gDfVfrSssMMli6H+8Gx7C3PGPBQ7W4nFtd39g1Nlyn0/hCT1fK0DvI5/AOoZDHvnGoDKPzXUNFPFVPVnANOIr2JF2ddY= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1707915007; c=relaxed/simple; bh=JaHBeuuIG5uZZoaEPSZ2sPa9jXgVOE0rd93vNNIckrg=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=pFuqHO9Iko6r4jhon+5ceY/o7nwX1p1KzZT3bY4IykbdFPB8CFVdixEnTQQkySMeDhWfh5mon5tFbpOS4dLRhWMBmAne7tHYRkkp13wzKrWT5UBmeFrJaUfqS5j3yibjsoLx56m+XJlBtSTRMQ9OCv/TwJ/3+h4HLcksx8o6Py4= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=rjwysocki.net; spf=pass smtp.mailfrom=rjwysocki.net; arc=none smtp.client-ip=79.96.170.134 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=rjwysocki.net Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=rjwysocki.net Received: from localhost (127.0.0.1) (HELO v370.home.net.pl) by /usr/run/smtp (/usr/run/postfix/private/idea_relay_lmtp) via UNIX with SMTP (IdeaSmtpServer 5.4.0) id 88be413aea02551f; Wed, 14 Feb 2024 13:49:57 +0100 Received: from kreacher.localnet (unknown [195.136.19.94]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by cloudserver094114.home.pl (Postfix) with ESMTPSA id F0A62669DCB; Wed, 14 Feb 2024 13:49:56 +0100 (CET) From: "Rafael J. Wysocki" To: Linux PM Cc: Daniel Lezcano , LKML , Linux ACPI , Lukasz Luba , Zhang Rui , Srinivas Pandruvada , Stanislaw Gruszka , AngeloGioacchino Del Regno , Shawn Guo , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , NXP Linux Team Subject: [PATCH v2 2/6] thermal: ACPI: Discard trips table after zone registration Date: Wed, 14 Feb 2024 13:30:23 +0100 Message-ID: <13457348.uLZWGnKmhe@kreacher> In-Reply-To: <4551531.LvFx2qVVIh@kreacher> References: <4551531.LvFx2qVVIh@kreacher> 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: clean X-VADE-SPAMCAUSE: gggruggvucftvghtrhhoucdtuddrgedvledrudejgdeggecutefuodetggdotefrodftvfcurfhrohhfihhlvgemucfjqffogffrnfdpggftiffpkfenuceurghilhhouhhtmecuudehtdenucesvcftvggtihhpihgvnhhtshculddquddttddmnecujfgurhephffvvefufffkjghfggfgtgesthfuredttddtjeenucfhrhhomhepfdftrghfrggvlhculfdrucghhihsohgtkhhifdcuoehrjhifsehrjhifhihsohgtkhhirdhnvghtqeenucggtffrrghtthgvrhhnpedvffeuiedtgfdvtddugeeujedtffetteegfeekffdvfedttddtuefhgeefvdejhfenucfkphepudelhedrudefiedrudelrdelgeenucevlhhushhtvghrufhiiigvpedtnecurfgrrhgrmhepihhnvghtpeduleehrddufeeirdduledrleegpdhhvghlohepkhhrvggrtghhvghrrdhlohgtrghlnhgvthdpmhgrihhlfhhrohhmpedftfgrfhgrvghlucflrdcuhgihshhotghkihdfuceorhhjfiesrhhjfiihshhotghkihdrnhgvtheqpdhnsggprhgtphhtthhopedugedprhgtphhtthhopehlihhnuhigqdhpmhesvhhgvghrrdhkvghrnhgvlhdrohhrghdprhgtphhtthhopegurghnihgvlhdrlhgviigtrghnoheslhhinhgrrhhordhorhhgpdhrtghpthhtoheplhhinhhugidqkhgvrhhnvghlsehvghgvrhdrkhgvrhhnvghlrdhorhhgpdhrtghpthhtoheplhhinhhugidqrggtphhisehvghgvrhdrkhgvrhhnvghlrdhorhhgpdhrtghpthhtoheplhhukhgrshiirdhluhgsrgesrghrmhdrtghomhdprhgtphhtthhopehruhhirdiihhgrnhhgsehinhhtvghlrdgtohhm X-DCC--Metrics: v370.home.net.pl 1024; Body=14 Fuz1=14 Fuz2=14 From: Rafael J. Wysocki Because the thermal core creates and uses its own copy of the trips table passed to thermal_zone_device_register_with_trips(), it is not necessary to hold on to a local copy of it any more after the given thermal zone has been registered. Accordingly, modify the ACPI thermal driver to store the trips table passed to thermal_zone_device_register_with_trips() in a local variable which is automatically discarded when acpi_thermal_add() returns to its caller. Also make some additional code simplifications unlocked by the above change. Signed-off-by: Rafael J. Wysocki Reviewed-by: Stanislaw Gruszka --- v1 -> v2: Add R-by from Stanislaw. --- drivers/acpi/thermal.c | 57 +++++++++++++++++-------------------------------- 1 file changed, 20 insertions(+), 37 deletions(-) Index: linux-pm/drivers/acpi/thermal.c =================================================================== --- linux-pm.orig/drivers/acpi/thermal.c +++ linux-pm/drivers/acpi/thermal.c @@ -47,6 +47,8 @@ #define ACPI_THERMAL_TRIP_PASSIVE (-1) +#define ACPI_THERMAL_MAX_NR_TRIPS (ACPI_THERMAL_MAX_ACTIVE + 3) + /* * This exception is thrown out in two cases: * 1.An invalid trip point becomes invalid or a valid trip point becomes invalid @@ -112,7 +114,6 @@ struct acpi_thermal { unsigned long polling_frequency; volatile u8 zombie; struct acpi_thermal_trips trips; - struct thermal_trip *trip_table; struct thermal_zone_device *thermal_zone; int kelvin_offset; /* in millidegrees */ struct work_struct thermal_check_work; @@ -451,26 +452,19 @@ fail: return false; } -static int acpi_thermal_get_trip_points(struct acpi_thermal *tz) +static void acpi_thermal_get_trip_points(struct acpi_thermal *tz) { - unsigned int count = 0; int i; - if (acpi_thermal_init_trip(tz, ACPI_THERMAL_TRIP_PASSIVE)) - count++; + acpi_thermal_init_trip(tz, ACPI_THERMAL_TRIP_PASSIVE); for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE; i++) { - if (acpi_thermal_init_trip(tz, i)) - count++; - else + if (!acpi_thermal_init_trip(tz, i)) break; - } while (++i < ACPI_THERMAL_MAX_ACTIVE) tz->trips.active[i].trip.temp_dk = THERMAL_TEMP_INVALID; - - return count; } /* sys I/F for generic thermal sysfs support */ @@ -662,13 +656,14 @@ static void acpi_thermal_zone_sysfs_remo } static int acpi_thermal_register_thermal_zone(struct acpi_thermal *tz, + const struct thermal_trip *trip_table, unsigned int trip_count, int passive_delay) { int result; tz->thermal_zone = thermal_zone_device_register_with_trips("acpitz", - tz->trip_table, + trip_table, trip_count, tz, &acpi_thermal_zone_ops, @@ -823,10 +818,10 @@ static void acpi_thermal_free_thermal_zo static int acpi_thermal_add(struct acpi_device *device) { + struct thermal_trip trip_table[ACPI_THERMAL_MAX_NR_TRIPS] = { 0 }; struct acpi_thermal_trip *acpi_trip; struct thermal_trip *trip; struct acpi_thermal *tz; - unsigned int trip_count; int crit_temp, hot_temp; int passive_delay = 0; int result; @@ -848,21 +843,10 @@ static int acpi_thermal_add(struct acpi_ acpi_thermal_aml_dependency_fix(tz); /* Get trip points [_CRT, _PSV, etc.] (required). */ - trip_count = acpi_thermal_get_trip_points(tz); + acpi_thermal_get_trip_points(tz); crit_temp = acpi_thermal_get_critical_trip(tz); - if (crit_temp != THERMAL_TEMP_INVALID) - trip_count++; - hot_temp = acpi_thermal_get_hot_trip(tz); - if (hot_temp != THERMAL_TEMP_INVALID) - trip_count++; - - if (!trip_count) { - pr_warn(FW_BUG "No valid trip points!\n"); - result = -ENODEV; - goto free_memory; - } /* Get temperature [_TMP] (required). */ result = acpi_thermal_get_temperature(tz); @@ -881,13 +865,7 @@ static int acpi_thermal_add(struct acpi_ acpi_thermal_guess_offset(tz, crit_temp); - trip = kcalloc(trip_count, sizeof(*trip), GFP_KERNEL); - if (!trip) { - result = -ENOMEM; - goto free_memory; - } - - tz->trip_table = trip; + trip = trip_table; if (crit_temp != THERMAL_TEMP_INVALID) { trip->type = THERMAL_TRIP_CRITICAL; @@ -923,9 +901,17 @@ static int acpi_thermal_add(struct acpi_ trip++; } - result = acpi_thermal_register_thermal_zone(tz, trip_count, passive_delay); + if (trip == trip_table) { + pr_warn(FW_BUG "No valid trip points!\n"); + result = -ENODEV; + goto free_memory; + } + + result = acpi_thermal_register_thermal_zone(tz, trip_table, + trip - trip_table, + passive_delay); if (result) - goto free_trips; + goto free_memory; refcount_set(&tz->thermal_check_count, 3); mutex_init(&tz->thermal_check_lock); @@ -944,8 +930,6 @@ static int acpi_thermal_add(struct acpi_ flush_wq: flush_workqueue(acpi_thermal_pm_queue); acpi_thermal_unregister_thermal_zone(tz); -free_trips: - kfree(tz->trip_table); free_memory: acpi_thermal_free_thermal_zone(tz); @@ -966,7 +950,6 @@ static void acpi_thermal_remove(struct a flush_workqueue(acpi_thermal_pm_queue); acpi_thermal_unregister_thermal_zone(tz); - kfree(tz->trip_table); acpi_thermal_free_thermal_zone(tz); } From patchwork Wed Feb 14 12:42:16 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: Daniel Lezcano , LKML , Linux ACPI , Lukasz Luba , Zhang Rui , Srinivas Pandruvada , Stanislaw Gruszka , AngeloGioacchino Del Regno , Shawn Guo , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , NXP Linux Team Subject: [PATCH v2 3/6] thermal: intel: Discard trip tables after zone registration Date: Wed, 14 Feb 2024 13:42:16 +0100 Message-ID: <3287354.44csPzL39Z@kreacher> In-Reply-To: <4551531.LvFx2qVVIh@kreacher> References: <4551531.LvFx2qVVIh@kreacher> 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: clean X-VADE-SPAMCAUSE: gggruggvucftvghtrhhoucdtuddrgedvledrudejgdeghecutefuodetggdotefrodftvfcurfhrohhfihhlvgemucfjqffogffrnfdpggftiffpkfenuceurghilhhouhhtmecuudehtdenucesvcftvggtihhpihgvnhhtshculddquddttddmnecujfgurhephffvvefufffkjghfggfgtgesthfuredttddtjeenucfhrhhomhepfdftrghfrggvlhculfdrucghhihsohgtkhhifdcuoehrjhifsehrjhifhihsohgtkhhirdhnvghtqeenucggtffrrghtthgvrhhnpedvffeuiedtgfdvtddugeeujedtffetteegfeekffdvfedttddtuefhgeefvdejhfenucfkphepudelhedrudefiedrudelrdelgeenucevlhhushhtvghrufhiiigvpedtnecurfgrrhgrmhepihhnvghtpeduleehrddufeeirdduledrleegpdhhvghlohepkhhrvggrtghhvghrrdhlohgtrghlnhgvthdpmhgrihhlfhhrohhmpedftfgrfhgrvghlucflrdcuhgihshhotghkihdfuceorhhjfiesrhhjfiihshhotghkihdrnhgvtheqpdhnsggprhgtphhtthhopedugedprhgtphhtthhopehlihhnuhigqdhpmhesvhhgvghrrdhkvghrnhgvlhdrohhrghdprhgtphhtthhopegurghnihgvlhdrlhgviigtrghnoheslhhinhgrrhhordhorhhgpdhrtghpthhtoheplhhinhhugidqkhgvrhhnvghlsehvghgvrhdrkhgvrhhnvghlrdhorhhgpdhrtghpthhtoheplhhinhhugidqrggtphhisehvghgvrhdrkhgvrhhnvghlrdhorhhgpdhrtghpthhtoheplhhukhgrshiirdhluhgsrgesrghrmhdrtghomhdprhgtphhtthhopehruhhirdiihhgrnhhgsehinhhtvghlrdgtohhm X-DCC--Metrics: v370.home.net.pl 1024; Body=14 Fuz1=14 Fuz2=14 From: Rafael J. Wysocki Because the thermal core creates and uses its own copy of the trips table passed to thermal_zone_device_register_with_trips(), it is not necessary to hold on to a local copy of it any more after the given thermal zone has been registered. Accordingly, modify Intel thermal drivers to discard the trips tables passed to thermal_zone_device_register_with_trips() after thermal zone registration, for example by storing them in local variables which are automatically discarded when the zone registration is complete. Also make some additional code simplifications unlocked by the above changes. Signed-off-by: Rafael J. Wysocki Acked-by: Daniel Lezcano --- v1 -> v2: Rebase. --- drivers/thermal/intel/int340x_thermal/int340x_thermal_zone.c | 6 - drivers/thermal/intel/int340x_thermal/int340x_thermal_zone.h | 1 drivers/thermal/intel/int340x_thermal/processor_thermal_device_pci.c | 9 +- drivers/thermal/intel/intel_pch_thermal.c | 24 +++--- drivers/thermal/intel/intel_quark_dts_thermal.c | 4 - drivers/thermal/intel/intel_soc_dts_iosf.c | 14 ++-- drivers/thermal/intel/intel_soc_dts_iosf.h | 1 drivers/thermal/intel/x86_pkg_temp_thermal.c | 35 +++------- 8 files changed, 40 insertions(+), 54 deletions(-) Index: linux-pm/drivers/thermal/intel/int340x_thermal/int340x_thermal_zone.c =================================================================== --- linux-pm.orig/drivers/thermal/intel/int340x_thermal/int340x_thermal_zone.c +++ linux-pm/drivers/thermal/intel/int340x_thermal/int340x_thermal_zone.c @@ -177,8 +177,6 @@ struct int34x_thermal_zone *int340x_ther for (i = 0; i < trip_cnt; ++i) zone_trips[i].hysteresis = hyst; - int34x_zone->trips = zone_trips; - int34x_zone->lpat_table = acpi_lpat_get_conversion_table(adev->handle); int34x_zone->zone = thermal_zone_device_register_with_trips( @@ -188,6 +186,8 @@ struct int34x_thermal_zone *int340x_ther int34x_zone->ops, &int340x_thermal_params, 0, 0); + kfree(zone_trips); + if (IS_ERR(int34x_zone->zone)) { ret = PTR_ERR(int34x_zone->zone); goto err_thermal_zone; @@ -201,7 +201,6 @@ struct int34x_thermal_zone *int340x_ther err_enable: thermal_zone_device_unregister(int34x_zone->zone); err_thermal_zone: - kfree(int34x_zone->trips); acpi_lpat_free_conversion_table(int34x_zone->lpat_table); err_trips_alloc: kfree(int34x_zone->ops); @@ -215,7 +214,6 @@ void int340x_thermal_zone_remove(struct { thermal_zone_device_unregister(int34x_zone->zone); acpi_lpat_free_conversion_table(int34x_zone->lpat_table); - kfree(int34x_zone->trips); kfree(int34x_zone->ops); kfree(int34x_zone); } Index: linux-pm/drivers/thermal/intel/int340x_thermal/int340x_thermal_zone.h =================================================================== --- linux-pm.orig/drivers/thermal/intel/int340x_thermal/int340x_thermal_zone.h +++ linux-pm/drivers/thermal/intel/int340x_thermal/int340x_thermal_zone.h @@ -20,7 +20,6 @@ struct active_trip { struct int34x_thermal_zone { struct acpi_device *adev; - struct thermal_trip *trips; int aux_trip_nr; struct thermal_zone_device *zone; struct thermal_zone_device_ops *ops; Index: linux-pm/drivers/thermal/intel/int340x_thermal/processor_thermal_device_pci.c =================================================================== --- linux-pm.orig/drivers/thermal/intel/int340x_thermal/processor_thermal_device_pci.c +++ linux-pm/drivers/thermal/intel/int340x_thermal/processor_thermal_device_pci.c @@ -233,11 +233,6 @@ static int get_trip_temp(struct proc_the return temp; } -static struct thermal_trip psv_trip = { - .type = THERMAL_TRIP_PASSIVE, - .flags = THERMAL_TRIP_FLAG_RW_TEMP, -}; - static struct thermal_zone_device_ops tzone_ops = { .get_temp = sys_get_curr_temp, .set_trip_temp = sys_set_trip_temp, @@ -252,6 +247,10 @@ static int proc_thermal_pci_probe(struct { struct proc_thermal_device *proc_priv; struct proc_thermal_pci *pci_info; + struct thermal_trip psv_trip = { + .type = THERMAL_TRIP_PASSIVE, + .flags = THERMAL_TRIP_FLAG_RW_TEMP, + }; int irq_flag = 0, irq, ret; bool msi_irq = false; Index: linux-pm/drivers/thermal/intel/intel_pch_thermal.c =================================================================== --- linux-pm.orig/drivers/thermal/intel/intel_pch_thermal.c +++ linux-pm/drivers/thermal/intel/intel_pch_thermal.c @@ -84,7 +84,6 @@ struct pch_thermal_device { void __iomem *hw_base; struct pci_dev *pdev; struct thermal_zone_device *tzd; - struct thermal_trip trips[PCH_MAX_TRIPS]; bool bios_enabled; }; @@ -94,7 +93,8 @@ struct pch_thermal_device { * passive trip temperature using _PSV method. There is no specific * passive temperature setting in MMIO interface of this PCI device. */ -static int pch_wpt_add_acpi_psv_trip(struct pch_thermal_device *ptd, int trip) +static int pch_wpt_add_acpi_psv_trip(struct pch_thermal_device *ptd, + struct thermal_trip *trip) { struct acpi_device *adev; int temp; @@ -106,12 +106,13 @@ static int pch_wpt_add_acpi_psv_trip(str if (thermal_acpi_passive_trip_temp(adev, &temp) || temp <= 0) return 0; - ptd->trips[trip].type = THERMAL_TRIP_PASSIVE; - ptd->trips[trip].temperature = temp; + trip->type = THERMAL_TRIP_PASSIVE; + trip->temperature = temp; return 1; } #else -static int pch_wpt_add_acpi_psv_trip(struct pch_thermal_device *ptd, int trip) +static int pch_wpt_add_acpi_psv_trip(struct pch_thermal_device *ptd, + struct thermal_trip *trip) { return 0; } @@ -159,6 +160,7 @@ static const char *board_names[] = { static int intel_pch_thermal_probe(struct pci_dev *pdev, const struct pci_device_id *id) { + struct thermal_trip ptd_trips[PCH_MAX_TRIPS] = { 0 }; enum pch_board_ids board_id = id->driver_data; struct pch_thermal_device *ptd; int nr_trips = 0; @@ -220,21 +222,21 @@ read_trips: trip_temp = readw(ptd->hw_base + WPT_CTT); trip_temp &= 0x1FF; if (trip_temp) { - ptd->trips[nr_trips].temperature = GET_WPT_TEMP(trip_temp); - ptd->trips[nr_trips++].type = THERMAL_TRIP_CRITICAL; + ptd_trips[nr_trips].temperature = GET_WPT_TEMP(trip_temp); + ptd_trips[nr_trips++].type = THERMAL_TRIP_CRITICAL; } trip_temp = readw(ptd->hw_base + WPT_PHL); trip_temp &= 0x1FF; if (trip_temp) { - ptd->trips[nr_trips].temperature = GET_WPT_TEMP(trip_temp); - ptd->trips[nr_trips++].type = THERMAL_TRIP_HOT; + ptd_trips[nr_trips].temperature = GET_WPT_TEMP(trip_temp); + ptd_trips[nr_trips++].type = THERMAL_TRIP_HOT; } - nr_trips += pch_wpt_add_acpi_psv_trip(ptd, nr_trips); + nr_trips += pch_wpt_add_acpi_psv_trip(ptd, &ptd_trips[nr_trips]); ptd->tzd = thermal_zone_device_register_with_trips(board_names[board_id], - ptd->trips, nr_trips, + ptd_trips, nr_trips, ptd, &tzd_ops, NULL, 0, 0); if (IS_ERR(ptd->tzd)) { Index: linux-pm/drivers/thermal/intel/intel_quark_dts_thermal.c =================================================================== --- linux-pm.orig/drivers/thermal/intel/intel_quark_dts_thermal.c +++ linux-pm/drivers/thermal/intel/intel_quark_dts_thermal.c @@ -101,7 +101,6 @@ struct soc_sensor_entry { u32 store_ptps; u32 store_dts_enable; struct thermal_zone_device *tzone; - struct thermal_trip trips[QRK_MAX_DTS_TRIPS]; }; static struct soc_sensor_entry *soc_dts; @@ -316,8 +315,8 @@ static void free_soc_dts(struct soc_sens static struct soc_sensor_entry *alloc_soc_dts(void) { + struct thermal_trip trips[QRK_MAX_DTS_TRIPS]; struct soc_sensor_entry *aux_entry; - struct thermal_trip *trips; int err; u32 out; @@ -326,7 +325,6 @@ static struct soc_sensor_entry *alloc_so err = -ENOMEM; return ERR_PTR(-ENOMEM); } - trips = aux_entry->trips; /* Check if DTS register is locked */ err = iosf_mbi_read(QRK_MBI_UNIT_RMU, MBI_REG_READ, Index: linux-pm/drivers/thermal/intel/intel_soc_dts_iosf.c =================================================================== --- linux-pm.orig/drivers/thermal/intel/intel_soc_dts_iosf.c +++ linux-pm/drivers/thermal/intel/intel_soc_dts_iosf.c @@ -201,7 +201,8 @@ static void remove_dts_thermal_zone(stru thermal_zone_device_unregister(dts->tzone); } -static int add_dts_thermal_zone(int id, struct intel_soc_dts_sensor_entry *dts) +static int add_dts_thermal_zone(int id, struct intel_soc_dts_sensor_entry *dts, + struct thermal_trip *trips) { char name[10]; u32 store_ptps; @@ -223,11 +224,11 @@ static int add_dts_thermal_zone(int id, for (i = 0; i <= 1; i++) { if (store_ptps & (0xFFU << i * 8)) - dts->trips[i].flags &= ~THERMAL_TRIP_FLAG_RW_TEMP; + trips[i].flags &= ~THERMAL_TRIP_FLAG_RW_TEMP; } } snprintf(name, sizeof(name), "soc_dts%d", id); - dts->tzone = thermal_zone_device_register_with_trips(name, dts->trips, + dts->tzone = thermal_zone_device_register_with_trips(name, trips, SOC_MAX_DTS_TRIPS, dts, &tzone_ops, NULL, 0, 0); @@ -303,6 +304,7 @@ struct intel_soc_dts_sensors * intel_soc_dts_iosf_init(enum intel_soc_dts_interrupt_type intr_type, bool critical_trip, int crit_offset) { + struct thermal_trip trips[SOC_MAX_DTS_SENSORS][SOC_MAX_DTS_TRIPS] = { 0 }; struct intel_soc_dts_sensors *sensors; int tj_max; int ret; @@ -335,7 +337,7 @@ intel_soc_dts_iosf_init(enum intel_soc_d if (ret) goto err_reset_trips; - set_trip(&sensors->soc_dts[i].trips[0], THERMAL_TRIP_PASSIVE, + set_trip(&trips[i][0], THERMAL_TRIP_PASSIVE, THERMAL_TRIP_FLAG_RW_TEMP, 0); if (critical_trip) { @@ -351,11 +353,11 @@ intel_soc_dts_iosf_init(enum intel_soc_d if (ret) goto err_reset_trips; - set_trip(&sensors->soc_dts[i].trips[1], trip_type, trip_flags, temp); + set_trip(&trips[i][1], trip_type, trip_flags, temp); } for (i = 0; i < SOC_MAX_DTS_SENSORS; ++i) { - ret = add_dts_thermal_zone(i, &sensors->soc_dts[i]); + ret = add_dts_thermal_zone(i, &sensors->soc_dts[i], trips[i]); if (ret) goto err_remove_zone; } Index: linux-pm/drivers/thermal/intel/intel_soc_dts_iosf.h =================================================================== --- linux-pm.orig/drivers/thermal/intel/intel_soc_dts_iosf.h +++ linux-pm/drivers/thermal/intel/intel_soc_dts_iosf.h @@ -28,7 +28,6 @@ struct intel_soc_dts_sensors; struct intel_soc_dts_sensor_entry { int id; u32 store_status; - struct thermal_trip trips[SOC_MAX_DTS_TRIPS]; struct thermal_zone_device *tzone; struct intel_soc_dts_sensors *sensors; }; Index: linux-pm/drivers/thermal/intel/x86_pkg_temp_thermal.c =================================================================== --- linux-pm.orig/drivers/thermal/intel/x86_pkg_temp_thermal.c +++ linux-pm/drivers/thermal/intel/x86_pkg_temp_thermal.c @@ -53,7 +53,6 @@ struct zone_device { u32 msr_pkg_therm_high; struct delayed_work work; struct thermal_zone_device *tzone; - struct thermal_trip *trips; struct cpumask cpumask; }; @@ -268,17 +267,13 @@ static int pkg_thermal_notify(u64 msr_va return 0; } -static struct thermal_trip *pkg_temp_thermal_trips_init(int cpu, int tj_max, int num_trips) +static int pkg_temp_thermal_trips_init(int cpu, int tj_max, + struct thermal_trip *trips, int num_trips) { - struct thermal_trip *trips; unsigned long thres_reg_value; u32 mask, shift, eax, edx; int ret, i; - trips = kzalloc(sizeof(*trips) * num_trips, GFP_KERNEL); - if (!trips) - return ERR_PTR(-ENOMEM); - for (i = 0; i < num_trips; i++) { if (i) { @@ -291,10 +286,8 @@ static struct thermal_trip *pkg_temp_the ret = rdmsr_on_cpu(cpu, MSR_IA32_PACKAGE_THERM_INTERRUPT, &eax, &edx); - if (ret < 0) { - kfree(trips); - return ERR_PTR(ret); - } + if (ret < 0) + return ret; thres_reg_value = (eax & mask) >> shift; @@ -308,11 +301,12 @@ static struct thermal_trip *pkg_temp_the __func__, cpu, i, trips[i].temperature); } - return trips; + return 0; } static int pkg_temp_thermal_device_add(unsigned int cpu) { + struct thermal_trip trips[MAX_NUMBER_OF_TRIPS] = { 0 }; int id = topology_logical_die_id(cpu); u32 eax, ebx, ecx, edx; struct zone_device *zonedev; @@ -337,20 +331,18 @@ static int pkg_temp_thermal_device_add(u if (!zonedev) return -ENOMEM; - zonedev->trips = pkg_temp_thermal_trips_init(cpu, tj_max, thres_count); - if (IS_ERR(zonedev->trips)) { - err = PTR_ERR(zonedev->trips); + err = pkg_temp_thermal_trips_init(cpu, tj_max, trips, thres_count); + if (err) goto out_kfree_zonedev; - } INIT_DELAYED_WORK(&zonedev->work, pkg_temp_thermal_threshold_work_fn); zonedev->cpu = cpu; zonedev->tzone = thermal_zone_device_register_with_trips("x86_pkg_temp", - zonedev->trips, thres_count, + trips, thres_count, zonedev, &tzone_ops, &pkg_temp_tz_params, 0, 0); if (IS_ERR(zonedev->tzone)) { err = PTR_ERR(zonedev->tzone); - goto out_kfree_trips; + goto out_kfree_zonedev; } err = thermal_zone_device_enable(zonedev->tzone); if (err) @@ -369,8 +361,6 @@ static int pkg_temp_thermal_device_add(u out_unregister_tz: thermal_zone_device_unregister(zonedev->tzone); -out_kfree_trips: - kfree(zonedev->trips); out_kfree_zonedev: kfree(zonedev); return err; @@ -457,10 +447,9 @@ static int pkg_thermal_cpu_offline(unsig raw_spin_unlock_irq(&pkg_temp_lock); /* Final cleanup if this is the last cpu */ - if (lastcpu) { - kfree(zonedev->trips); + if (lastcpu) kfree(zonedev); - } + return 0; } From patchwork Wed Feb 14 12:45:23 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Rafael J. Wysocki" X-Patchwork-Id: 772791 Received: from cloudserver094114.home.pl (cloudserver094114.home.pl [79.96.170.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id BF3881A731; Wed, 14 Feb 2024 12:50:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=79.96.170.134 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1707915008; cv=none; b=g7rn+r3f01zvoLYcX5PahCEGaiZHk56Holn1rclsqDNnTelSrEE5wErcXDwWTX4jMO3APFG31xk78HydNGHlP+RJstKK7M1JVbYahHDmGHWA1RPeCES9GCq0HIA9ytUiMFoU2q7UhTKwIMVUV3L7logUZzqsPMAnho/JJ51nqVQ= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1707915008; c=relaxed/simple; bh=B/ujohE3qiBVLmi+Jpy5fRBSCruD6diBDw5p9EMxt8w=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=EGuDPUuSTxshgFp18NoHs+7Wio196Qf4qPXPYte6QhLV99BKISfYJmVY7vZGtRSq4BgLEEG+NKVbeDXwRVdl5YSTBoqIhNyuzvYr+MCFWleCFEPolKwSCfCyjyMBIPFeDoOQV4dX3wVpX1T9+2xeOV2eld0zCZ8BzR/b4RE456I= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=rjwysocki.net; spf=pass smtp.mailfrom=rjwysocki.net; arc=none smtp.client-ip=79.96.170.134 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=rjwysocki.net Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=rjwysocki.net Received: from localhost (127.0.0.1) (HELO v370.home.net.pl) by /usr/run/smtp (/usr/run/postfix/private/idea_relay_lmtp) via UNIX with SMTP (IdeaSmtpServer 5.4.0) id 798074c4873750b2; Wed, 14 Feb 2024 13:49:55 +0100 Received: from kreacher.localnet (unknown [195.136.19.94]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by cloudserver094114.home.pl (Postfix) with ESMTPSA id 48C0A669DB7; Wed, 14 Feb 2024 13:49:55 +0100 (CET) From: "Rafael J. Wysocki" To: Linux PM Cc: Daniel Lezcano , LKML , Linux ACPI , Lukasz Luba , Zhang Rui , Srinivas Pandruvada , Stanislaw Gruszka , AngeloGioacchino Del Regno , Shawn Guo , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , NXP Linux Team Subject: [PATCH v2 4/6] thermal: core: Store zone ops in struct thermal_zone_device Date: Wed, 14 Feb 2024 13:45:23 +0100 Message-ID: <2262393.iZASKD2KPV@kreacher> In-Reply-To: <4551531.LvFx2qVVIh@kreacher> References: <4551531.LvFx2qVVIh@kreacher> 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: clean X-VADE-SPAMCAUSE: gggruggvucftvghtrhhoucdtuddrgedvledrudejgdeggecutefuodetggdotefrodftvfcurfhrohhfihhlvgemucfjqffogffrnfdpggftiffpkfenuceurghilhhouhhtmecuudehtdenucesvcftvggtihhpihgvnhhtshculddquddttddmnecujfgurhephffvvefufffkjghfggfgtgesthfuredttddtjeenucfhrhhomhepfdftrghfrggvlhculfdrucghhihsohgtkhhifdcuoehrjhifsehrjhifhihsohgtkhhirdhnvghtqeenucggtffrrghtthgvrhhnpedvffeuiedtgfdvtddugeeujedtffetteegfeekffdvfedttddtuefhgeefvdejhfenucfkphepudelhedrudefiedrudelrdelgeenucevlhhushhtvghrufhiiigvpedtnecurfgrrhgrmhepihhnvghtpeduleehrddufeeirdduledrleegpdhhvghlohepkhhrvggrtghhvghrrdhlohgtrghlnhgvthdpmhgrihhlfhhrohhmpedftfgrfhgrvghlucflrdcuhgihshhotghkihdfuceorhhjfiesrhhjfiihshhotghkihdrnhgvtheqpdhnsggprhgtphhtthhopedugedprhgtphhtthhopehlihhnuhigqdhpmhesvhhgvghrrdhkvghrnhgvlhdrohhrghdprhgtphhtthhopegurghnihgvlhdrlhgviigtrghnoheslhhinhgrrhhordhorhhgpdhrtghpthhtoheplhhinhhugidqkhgvrhhnvghlsehvghgvrhdrkhgvrhhnvghlrdhorhhgpdhrtghpthhtoheplhhinhhugidqrggtphhisehvghgvrhdrkhgvrhhnvghlrdhorhhgpdhrtghpthhtoheplhhukhgrshiirdhluhgsrgesrghrmhdrtghomhdprhgtphhtthhopehruhhirdiihhgrnhhgsehinhhtvghlrdgtohhm X-DCC--Metrics: v370.home.net.pl 1024; Body=14 Fuz1=14 Fuz2=14 From: Rafael J. Wysocki The current code requires thermal zone creators to pass pointers to writable ops structures to thermal_zone_device_register_with_trips() which needs to modify the target struct thermal_zone_device_ops object if the "critical" operation in it is NULL. Moreover, the callers of thermal_zone_device_register_with_trips() are required to hold on to the struct thermal_zone_device_ops object passed to it until the given thermal zone is unregistered. Both of these requirements are quite inconvenient, so modify struct thermal_zone_device to contain struct thermal_zone_device_ops as field and make thermal_zone_device_register_with_trips() copy the contents of the struct thermal_zone_device_ops passed to it via a pointer (which can be const now) to that field. Also adjust the code using thermal zone ops accordingly and modify thermal_of_zone_register() to use a local ops variable during thermal zone registration so ops do not need to be freed in thermal_of_zone_unregister() any more. Signed-off-by: Rafael J. Wysocki Reviewed-by: Stanislaw Gruszka --- v1 -> v2: * Rebase. * Add thermal_of modifications. * Add R-by from Stanislaw (still applicable IMV). --- drivers/thermal/thermal_core.c | 40 +++++++++++++++++++------------------- drivers/thermal/thermal_helpers.c | 10 ++++----- drivers/thermal/thermal_hwmon.c | 4 +-- drivers/thermal/thermal_of.c | 26 +++++++----------------- drivers/thermal/thermal_sysfs.c | 8 +++---- drivers/thermal/thermal_trip.c | 4 +-- include/linux/thermal.h | 6 ++--- 7 files changed, 44 insertions(+), 54 deletions(-) Index: linux-pm/include/linux/thermal.h =================================================================== --- linux-pm.orig/include/linux/thermal.h +++ linux-pm/include/linux/thermal.h @@ -189,7 +189,7 @@ struct thermal_zone_device { int prev_low_trip; int prev_high_trip; atomic_t need_update; - struct thermal_zone_device_ops *ops; + struct thermal_zone_device_ops ops; struct thermal_zone_params *tzp; struct thermal_governor *governor; void *governor_data; @@ -324,14 +324,14 @@ struct thermal_zone_device *thermal_zone const char *type, const struct thermal_trip *trips, int num_trips, void *devdata, - struct thermal_zone_device_ops *ops, + const struct thermal_zone_device_ops *ops, const struct thermal_zone_params *tzp, int passive_delay, int polling_delay); struct thermal_zone_device *thermal_tripless_zone_device_register( const char *type, void *devdata, - struct thermal_zone_device_ops *ops, + const struct thermal_zone_device_ops *ops, const struct thermal_zone_params *tzp); void thermal_zone_device_unregister(struct thermal_zone_device *tz); Index: linux-pm/drivers/thermal/thermal_core.c =================================================================== --- linux-pm.orig/drivers/thermal/thermal_core.c +++ linux-pm/drivers/thermal/thermal_core.c @@ -356,9 +356,9 @@ static void handle_critical_trips(struct trace_thermal_zone_trip(tz, thermal_zone_trip_id(tz, trip), trip->type); if (trip->type == THERMAL_TRIP_CRITICAL) - tz->ops->critical(tz); - else if (tz->ops->hot) - tz->ops->hot(tz); + tz->ops.critical(tz); + else if (tz->ops.hot) + tz->ops.hot(tz); } static void handle_thermal_trip(struct thermal_zone_device *tz, @@ -493,8 +493,8 @@ static int thermal_zone_device_set_mode( return ret; } - if (tz->ops->change_mode) - ret = tz->ops->change_mode(tz, mode); + if (tz->ops.change_mode) + ret = tz->ops.change_mode(tz, mode); if (!ret) tz->mode = mode; @@ -867,8 +867,8 @@ static void bind_cdev(struct thermal_coo struct thermal_zone_device *pos = NULL; list_for_each_entry(pos, &thermal_tz_list, node) { - if (pos->ops->bind) { - ret = pos->ops->bind(pos, cdev); + if (pos->ops.bind) { + ret = pos->ops.bind(pos, cdev); if (ret) print_bind_err_msg(pos, cdev, ret); } @@ -1184,8 +1184,8 @@ void thermal_cooling_device_unregister(s /* Unbind all thermal zones associated with 'this' cdev */ list_for_each_entry(tz, &thermal_tz_list, node) { - if (tz->ops->unbind) - tz->ops->unbind(tz, cdev); + if (tz->ops.unbind) + tz->ops.unbind(tz, cdev); } mutex_unlock(&thermal_list_lock); @@ -1199,13 +1199,13 @@ static void bind_tz(struct thermal_zone_ int ret; struct thermal_cooling_device *pos = NULL; - if (!tz->ops->bind) + if (!tz->ops.bind) return; mutex_lock(&thermal_list_lock); list_for_each_entry(pos, &thermal_cdev_list, node) { - ret = tz->ops->bind(tz, pos); + ret = tz->ops.bind(tz, pos); if (ret) print_bind_err_msg(tz, pos, ret); } @@ -1224,8 +1224,8 @@ int thermal_zone_get_crit_temp(struct th { int i, ret = -EINVAL; - if (tz->ops->get_crit_temp) - return tz->ops->get_crit_temp(tz, temp); + if (tz->ops.get_crit_temp) + return tz->ops.get_crit_temp(tz, temp); mutex_lock(&tz->lock); @@ -1271,7 +1271,7 @@ struct thermal_zone_device * thermal_zone_device_register_with_trips(const char *type, const struct thermal_trip *trips, int num_trips, void *devdata, - struct thermal_zone_device_ops *ops, + const struct thermal_zone_device_ops *ops, const struct thermal_zone_params *tzp, int passive_delay, int polling_delay) { @@ -1333,10 +1333,10 @@ thermal_zone_device_register_with_trips( tz->id = id; strscpy(tz->type, type, sizeof(tz->type)); - if (!ops->critical) - ops->critical = thermal_zone_device_critical; + tz->ops = *ops; + if (!tz->ops.critical) + tz->ops.critical = thermal_zone_device_critical; - tz->ops = ops; tz->device.class = thermal_class; tz->devdata = devdata; memcpy(tz->trips, trips, num_trips * sizeof(*trips)); @@ -1422,7 +1422,7 @@ EXPORT_SYMBOL_GPL(thermal_zone_device_re struct thermal_zone_device *thermal_tripless_zone_device_register( const char *type, void *devdata, - struct thermal_zone_device_ops *ops, + const struct thermal_zone_device_ops *ops, const struct thermal_zone_params *tzp) { return thermal_zone_device_register_with_trips(type, NULL, 0, devdata, @@ -1484,8 +1484,8 @@ void thermal_zone_device_unregister(stru /* Unbind all cdevs associated with 'this' thermal zone */ list_for_each_entry(cdev, &thermal_cdev_list, node) - if (tz->ops->unbind) - tz->ops->unbind(tz, cdev); + if (tz->ops.unbind) + tz->ops.unbind(tz, cdev); mutex_unlock(&thermal_list_lock); Index: linux-pm/drivers/thermal/thermal_sysfs.c =================================================================== --- linux-pm.orig/drivers/thermal/thermal_sysfs.c +++ linux-pm/drivers/thermal/thermal_sysfs.c @@ -128,8 +128,8 @@ trip_point_temp_store(struct device *dev } if (temp != trip->temperature) { - if (tz->ops->set_trip_temp) { - ret = tz->ops->set_trip_temp(tz, trip_id, temp); + if (tz->ops.set_trip_temp) { + ret = tz->ops.set_trip_temp(tz, trip_id, temp); if (ret) goto unlock; } @@ -254,10 +254,10 @@ emul_temp_store(struct device *dev, stru mutex_lock(&tz->lock); - if (!tz->ops->set_emul_temp) + if (!tz->ops.set_emul_temp) tz->emul_temperature = temperature; else - ret = tz->ops->set_emul_temp(tz, temperature); + ret = tz->ops.set_emul_temp(tz, temperature); if (!ret) __thermal_zone_device_update(tz, THERMAL_EVENT_UNSPECIFIED); Index: linux-pm/drivers/thermal/thermal_helpers.c =================================================================== --- linux-pm.orig/drivers/thermal/thermal_helpers.c +++ linux-pm/drivers/thermal/thermal_helpers.c @@ -26,8 +26,8 @@ int get_tz_trend(struct thermal_zone_dev { enum thermal_trend trend; - if (tz->emul_temperature || !tz->ops->get_trend || - tz->ops->get_trend(tz, trip, &trend)) { + if (tz->emul_temperature || !tz->ops.get_trend || + tz->ops.get_trend(tz, trip, &trend)) { if (tz->temperature > tz->last_temperature) trend = THERMAL_TREND_RAISING; else if (tz->temperature < tz->last_temperature) @@ -75,7 +75,7 @@ EXPORT_SYMBOL(get_thermal_instance); * temperature and fill @temp. * * Both tz and tz->ops must be valid pointers when calling this function, - * and the tz->ops->get_temp callback must be provided. + * and the tz->ops.get_temp callback must be provided. * The function must be called under tz->lock. * * Return: On success returns 0, an error code otherwise @@ -88,7 +88,7 @@ int __thermal_zone_get_temp(struct therm lockdep_assert_held(&tz->lock); - ret = tz->ops->get_temp(tz, temp); + ret = tz->ops.get_temp(tz, temp); if (IS_ENABLED(CONFIG_THERMAL_EMULATION) && tz->emul_temperature) { for_each_trip(tz, trip) { @@ -132,7 +132,7 @@ int thermal_zone_get_temp(struct thermal mutex_lock(&tz->lock); - if (!tz->ops->get_temp) { + if (!tz->ops.get_temp) { ret = -EINVAL; goto unlock; } Index: linux-pm/drivers/thermal/thermal_trip.c =================================================================== --- linux-pm.orig/drivers/thermal/thermal_trip.c +++ linux-pm/drivers/thermal/thermal_trip.c @@ -70,7 +70,7 @@ void __thermal_zone_set_trips(struct the lockdep_assert_held(&tz->lock); - if (!tz->ops->set_trips) + if (!tz->ops.set_trips) return; for_each_trip(tz, trip) { @@ -114,7 +114,7 @@ void __thermal_zone_set_trips(struct the * Set a temperature window. When this window is left the driver * must inform the thermal core via thermal_zone_device_update. */ - ret = tz->ops->set_trips(tz, low, high); + ret = tz->ops.set_trips(tz, low, high); if (ret) dev_err(&tz->device, "Failed to set trips: %d\n", ret); } Index: linux-pm/drivers/thermal/thermal_hwmon.c =================================================================== --- linux-pm.orig/drivers/thermal/thermal_hwmon.c +++ linux-pm/drivers/thermal/thermal_hwmon.c @@ -80,7 +80,7 @@ temp_crit_show(struct device *dev, struc mutex_lock(&tz->lock); - ret = tz->ops->get_crit_temp(tz, &temperature); + ret = tz->ops.get_crit_temp(tz, &temperature); mutex_unlock(&tz->lock); @@ -132,7 +132,7 @@ thermal_hwmon_lookup_temp(const struct t static bool thermal_zone_crit_temp_valid(struct thermal_zone_device *tz) { int temp; - return tz->ops->get_crit_temp && !tz->ops->get_crit_temp(tz, &temp); + return tz->ops.get_crit_temp && !tz->ops.get_crit_temp(tz, &temp); } int thermal_add_hwmon_sysfs(struct thermal_zone_device *tz) Index: linux-pm/drivers/thermal/thermal_of.c =================================================================== --- linux-pm.orig/drivers/thermal/thermal_of.c +++ linux-pm/drivers/thermal/thermal_of.c @@ -441,12 +441,10 @@ static int thermal_of_unbind(struct ther static void thermal_of_zone_unregister(struct thermal_zone_device *tz) { struct thermal_trip *trips = tz->trips; - struct thermal_zone_device_ops *ops = tz->ops; thermal_zone_device_disable(tz); thermal_zone_device_unregister(tz); kfree(trips); - kfree(ops); } /** @@ -472,33 +470,27 @@ static void thermal_of_zone_unregister(s static struct thermal_zone_device *thermal_of_zone_register(struct device_node *sensor, int id, void *data, const struct thermal_zone_device_ops *ops) { + struct thermal_zone_device_ops of_ops = *ops; struct thermal_zone_device *tz; struct thermal_trip *trips; struct thermal_zone_params tzp = {}; - struct thermal_zone_device_ops *of_ops; struct device_node *np; const char *action; int delay, pdelay; int ntrips; int ret; - of_ops = kmemdup(ops, sizeof(*ops), GFP_KERNEL); - if (!of_ops) - return ERR_PTR(-ENOMEM); - np = of_thermal_zone_find(sensor, id); if (IS_ERR(np)) { if (PTR_ERR(np) != -ENODEV) pr_err("Failed to find thermal zone for %pOFn id=%d\n", sensor, id); - ret = PTR_ERR(np); - goto out_kfree_of_ops; + return ERR_CAST(np); } trips = thermal_of_trips_init(np, &ntrips); if (IS_ERR(trips)) { pr_err("Failed to find trip points for %pOFn id=%d\n", sensor, id); - ret = PTR_ERR(trips); - goto out_kfree_of_ops; + return ERR_CAST(trips); } ret = thermal_of_monitor_init(np, &delay, &pdelay); @@ -509,16 +501,16 @@ static struct thermal_zone_device *therm thermal_of_parameters_init(np, &tzp); - of_ops->bind = thermal_of_bind; - of_ops->unbind = thermal_of_unbind; + of_ops.bind = thermal_of_bind; + of_ops.unbind = thermal_of_unbind; ret = of_property_read_string(np, "critical-action", &action); if (!ret) - if (!of_ops->critical && !strcasecmp(action, "reboot")) - of_ops->critical = thermal_zone_device_critical_reboot; + if (!of_ops.critical && !strcasecmp(action, "reboot")) + of_ops.critical = thermal_zone_device_critical_reboot; tz = thermal_zone_device_register_with_trips(np->name, trips, ntrips, - data, of_ops, &tzp, + data, &of_ops, &tzp, pdelay, delay); if (IS_ERR(tz)) { ret = PTR_ERR(tz); @@ -538,8 +530,6 @@ static struct thermal_zone_device *therm out_kfree_trips: kfree(trips); -out_kfree_of_ops: - kfree(of_ops); return ERR_PTR(ret); } From patchwork Wed Feb 14 12:48:34 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: Daniel Lezcano , LKML , Linux ACPI , Lukasz Luba , Zhang Rui , Srinivas Pandruvada , Stanislaw Gruszka , AngeloGioacchino Del Regno , Shawn Guo , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , NXP Linux Team Subject: [PATCH v2 5/6] thermal: ACPI: Constify acpi_thermal_zone_ops Date: Wed, 14 Feb 2024 13:48:34 +0100 Message-ID: <3552599.iIbC2pHGDl@kreacher> In-Reply-To: <4551531.LvFx2qVVIh@kreacher> References: <4551531.LvFx2qVVIh@kreacher> 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: clean X-VADE-SPAMCAUSE: gggruggvucftvghtrhhoucdtuddrgedvledrudejgdeggecutefuodetggdotefrodftvfcurfhrohhfihhlvgemucfjqffogffrnfdpggftiffpkfenuceurghilhhouhhtmecuudehtdenucesvcftvggtihhpihgvnhhtshculddquddttddmnecujfgurhephffvvefufffkjghfggfgtgesthfuredttddtjeenucfhrhhomhepfdftrghfrggvlhculfdrucghhihsohgtkhhifdcuoehrjhifsehrjhifhihsohgtkhhirdhnvghtqeenucggtffrrghtthgvrhhnpedvffeuiedtgfdvtddugeeujedtffetteegfeekffdvfedttddtuefhgeefvdejhfenucfkphepudelhedrudefiedrudelrdelgeenucevlhhushhtvghrufhiiigvpedtnecurfgrrhgrmhepihhnvghtpeduleehrddufeeirdduledrleegpdhhvghlohepkhhrvggrtghhvghrrdhlohgtrghlnhgvthdpmhgrihhlfhhrohhmpedftfgrfhgrvghlucflrdcuhgihshhotghkihdfuceorhhjfiesrhhjfiihshhotghkihdrnhgvtheqpdhnsggprhgtphhtthhopedugedprhgtphhtthhopehlihhnuhigqdhpmhesvhhgvghrrdhkvghrnhgvlhdrohhrghdprhgtphhtthhopegurghnihgvlhdrlhgviigtrghnoheslhhinhgrrhhordhorhhgpdhrtghpthhtoheplhhinhhugidqkhgvrhhnvghlsehvghgvrhdrkhgvrhhnvghlrdhorhhgpdhrtghpthhtoheplhhinhhugidqrggtphhisehvghgvrhdrkhgvrhhnvghlrdhorhhgpdhrtghpthhtoheplhhukhgrshiirdhluhgsrgesrghrmhdrtghomhdprhgtphhtthhopehruhhirdiihhgrnhhgsehinhhtvghlrdgtohhm X-DCC--Metrics: v370.home.net.pl 1024; Body=14 Fuz1=14 Fuz2=14 From: Rafael J. Wysocki Because thermal zone operations are now stored directly in struct thermal_zone_device, acpi_thermal_zone_ops need not be modified by the thermal core and so it can be const. Adjust the code accordingly. No functional impact. Signed-off-by: Rafael J. Wysocki Acked-by: Daniel Lezcano --- v1 -> v2: No changes. --- drivers/acpi/thermal.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) Index: linux-pm/drivers/acpi/thermal.c =================================================================== --- linux-pm.orig/drivers/acpi/thermal.c +++ linux-pm/drivers/acpi/thermal.c @@ -620,7 +620,7 @@ acpi_thermal_unbind_cooling_device(struc return acpi_thermal_bind_unbind_cdev(thermal, cdev, false); } -static struct thermal_zone_device_ops acpi_thermal_zone_ops = { +static const struct thermal_zone_device_ops acpi_thermal_zone_ops = { .bind = acpi_thermal_bind_cooling_device, .unbind = acpi_thermal_unbind_cooling_device, .get_temp = thermal_get_temp, From patchwork Wed Feb 14 12:49:41 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Rafael J. Wysocki" X-Patchwork-Id: 772793 Received: from cloudserver094114.home.pl (cloudserver094114.home.pl [79.96.170.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D0023487BC; Wed, 14 Feb 2024 12:50:01 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=79.96.170.134 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1707915004; cv=none; b=DjwXiE1Ih2UQgSoCZWinVgrS76wa2NzpShiXmzVfV05H1B42xQr6dKf5Js5cnvG+DdcTrsvH6sjZNcaM3SRVsL1IpqtDV35T9/kq3FASbkDfsxldWIzOHwPwJhm1gaUqRu1/6ywvrxRwVzi85vOfDMnr7MTvu+79HB5bVOrnydw= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1707915004; c=relaxed/simple; bh=025zc1LDVoUvaWbk7sNmJUJz5pu2gGD8HXd5JAmh5sw=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=EVUX/bmBImivwZs7AxGGajJ3+uvxlgW0jeLGwqXH1ebk8l9aKIWmwJxeZXmPUWhqBB4m3S1Ms+lN8yZM7da4TxPH+B06OzQQfFdDcsgVpV4YgYybu21hOuHCP4OqweoOai43CEa/d0g6UM+blHXUFuOrY1SOw0tYiGxf08SOgts= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=rjwysocki.net; spf=pass smtp.mailfrom=rjwysocki.net; arc=none smtp.client-ip=79.96.170.134 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=rjwysocki.net Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=rjwysocki.net Received: from localhost (127.0.0.1) (HELO v370.home.net.pl) by /usr/run/smtp (/usr/run/postfix/private/idea_relay_lmtp) via UNIX with SMTP (IdeaSmtpServer 5.4.0) id 43f8bf5cd5d58855; Wed, 14 Feb 2024 13:49:54 +0100 Received: from kreacher.localnet (unknown [195.136.19.94]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by cloudserver094114.home.pl (Postfix) with ESMTPSA id B9BB4669DCB; Wed, 14 Feb 2024 13:49:53 +0100 (CET) From: "Rafael J. Wysocki" To: Linux PM Cc: Daniel Lezcano , LKML , Linux ACPI , Lukasz Luba , Zhang Rui , Srinivas Pandruvada , Stanislaw Gruszka , AngeloGioacchino Del Regno , Shawn Guo , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , NXP Linux Team Subject: [PATCH v2 6/6] thermal: intel: Adjust ops handling during thermal zone registration Date: Wed, 14 Feb 2024 13:49:41 +0100 Message-ID: <3213551.5fSG56mABF@kreacher> In-Reply-To: <4551531.LvFx2qVVIh@kreacher> References: <4551531.LvFx2qVVIh@kreacher> 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: clean X-VADE-SPAMCAUSE: gggruggvucftvghtrhhoucdtuddrgedvledrudejgdeggecutefuodetggdotefrodftvfcurfhrohhfihhlvgemucfjqffogffrnfdpggftiffpkfenuceurghilhhouhhtmecuudehtdenucesvcftvggtihhpihgvnhhtshculddquddttddmnecujfgurhephffvvefufffkjghfggfgtgesthfuredttddtjeenucfhrhhomhepfdftrghfrggvlhculfdrucghhihsohgtkhhifdcuoehrjhifsehrjhifhihsohgtkhhirdhnvghtqeenucggtffrrghtthgvrhhnpedvffeuiedtgfdvtddugeeujedtffetteegfeekffdvfedttddtuefhgeefvdejhfenucfkphepudelhedrudefiedrudelrdelgeenucevlhhushhtvghrufhiiigvpedtnecurfgrrhgrmhepihhnvghtpeduleehrddufeeirdduledrleegpdhhvghlohepkhhrvggrtghhvghrrdhlohgtrghlnhgvthdpmhgrihhlfhhrohhmpedftfgrfhgrvghlucflrdcuhgihshhotghkihdfuceorhhjfiesrhhjfiihshhotghkihdrnhgvtheqpdhnsggprhgtphhtthhopedugedprhgtphhtthhopehlihhnuhigqdhpmhesvhhgvghrrdhkvghrnhgvlhdrohhrghdprhgtphhtthhopegurghnihgvlhdrlhgviigtrghnoheslhhinhgrrhhordhorhhgpdhrtghpthhtoheplhhinhhugidqkhgvrhhnvghlsehvghgvrhdrkhgvrhhnvghlrdhorhhgpdhrtghpthhtoheplhhinhhugidqrggtphhisehvghgvrhdrkhgvrhhnvghlrdhorhhgpdhrtghpthhtoheplhhukhgrshiirdhluhgsrgesrghrmhdrtghomhdprhgtphhtthhopehruhhirdiihhgrnhhgsehinhhtvghlrdgtohhm X-DCC--Metrics: v370.home.net.pl 1024; Body=14 Fuz1=14 From: Rafael J. Wysocki Because thermal zone operations are now stored directly in struct thermal_zone_device, thermal zone creators can discard the operations structure after the zone registration is complete, or it can be made read-only. Accordingly, make int340x_thermal_zone_add() use a local variable to represent thermal zone operations, so it is freed automatically upon the function exit, and make the other Intel thermal drivers use const zone operations structures. Signed-off-by: Rafael J. Wysocki Reviewed-by: Stanislaw Gruszka Reviewed-by: Daniel Lezcano --- v1 -> v2: * Rebase. * Add R-by from Stanislaw. --- drivers/thermal/intel/int340x_thermal/int340x_thermal_zone.c | 26 ++-------- drivers/thermal/intel/int340x_thermal/int340x_thermal_zone.h | 1 drivers/thermal/intel/int340x_thermal/processor_thermal_device_pci.c | 2 drivers/thermal/intel/intel_pch_thermal.c | 2 drivers/thermal/intel/intel_quark_dts_thermal.c | 2 drivers/thermal/intel/intel_soc_dts_iosf.c | 2 drivers/thermal/intel/x86_pkg_temp_thermal.c | 2 7 files changed, 11 insertions(+), 26 deletions(-) Index: linux-pm/drivers/thermal/intel/int340x_thermal/int340x_thermal_zone.c =================================================================== --- linux-pm.orig/drivers/thermal/intel/int340x_thermal/int340x_thermal_zone.c +++ linux-pm/drivers/thermal/intel/int340x_thermal/int340x_thermal_zone.c @@ -61,12 +61,6 @@ static void int340x_thermal_critical(str dev_dbg(&zone->device, "%s: critical temperature reached\n", zone->type); } -static struct thermal_zone_device_ops int340x_thermal_zone_ops = { - .get_temp = int340x_thermal_get_zone_temp, - .set_trip_temp = int340x_thermal_set_trip_temp, - .critical = int340x_thermal_critical, -}; - static inline void *int_to_trip_priv(int i) { return (void *)(long)i; @@ -126,6 +120,11 @@ static struct thermal_zone_params int340 struct int34x_thermal_zone *int340x_thermal_zone_add(struct acpi_device *adev, int (*get_temp) (struct thermal_zone_device *, int *)) { + const struct thermal_zone_device_ops zone_ops = { + .set_trip_temp = int340x_thermal_set_trip_temp, + .critical = int340x_thermal_critical, + .get_temp = get_temp ? get_temp : int340x_thermal_get_zone_temp, + }; struct int34x_thermal_zone *int34x_zone; struct thermal_trip *zone_trips; unsigned long long trip_cnt = 0; @@ -139,16 +138,6 @@ struct int34x_thermal_zone *int340x_ther int34x_zone->adev = adev; - int34x_zone->ops = kmemdup(&int340x_thermal_zone_ops, - sizeof(int340x_thermal_zone_ops), GFP_KERNEL); - if (!int34x_zone->ops) { - ret = -ENOMEM; - goto err_ops_alloc; - } - - if (get_temp) - int34x_zone->ops->get_temp = get_temp; - status = acpi_evaluate_integer(adev->handle, "PATC", NULL, &trip_cnt); if (ACPI_SUCCESS(status)) int34x_zone->aux_trip_nr = trip_cnt; @@ -183,7 +172,7 @@ struct int34x_thermal_zone *int340x_ther acpi_device_bid(adev), zone_trips, trip_cnt, int34x_zone, - int34x_zone->ops, + &zone_ops, &int340x_thermal_params, 0, 0); kfree(zone_trips); @@ -203,8 +192,6 @@ err_enable: err_thermal_zone: acpi_lpat_free_conversion_table(int34x_zone->lpat_table); err_trips_alloc: - kfree(int34x_zone->ops); -err_ops_alloc: kfree(int34x_zone); return ERR_PTR(ret); } @@ -214,7 +201,6 @@ void int340x_thermal_zone_remove(struct { thermal_zone_device_unregister(int34x_zone->zone); acpi_lpat_free_conversion_table(int34x_zone->lpat_table); - kfree(int34x_zone->ops); kfree(int34x_zone); } EXPORT_SYMBOL_GPL(int340x_thermal_zone_remove); Index: linux-pm/drivers/thermal/intel/int340x_thermal/int340x_thermal_zone.h =================================================================== --- linux-pm.orig/drivers/thermal/intel/int340x_thermal/int340x_thermal_zone.h +++ linux-pm/drivers/thermal/intel/int340x_thermal/int340x_thermal_zone.h @@ -22,7 +22,6 @@ struct int34x_thermal_zone { struct acpi_device *adev; int aux_trip_nr; struct thermal_zone_device *zone; - struct thermal_zone_device_ops *ops; void *priv_data; struct acpi_lpat_conversion_table *lpat_table; }; Index: linux-pm/drivers/thermal/intel/intel_pch_thermal.c =================================================================== --- linux-pm.orig/drivers/thermal/intel/intel_pch_thermal.c +++ linux-pm/drivers/thermal/intel/intel_pch_thermal.c @@ -132,7 +132,7 @@ static void pch_critical(struct thermal_ thermal_zone_device_type(tzd)); } -static struct thermal_zone_device_ops tzd_ops = { +static const struct thermal_zone_device_ops tzd_ops = { .get_temp = pch_thermal_get_temp, .critical = pch_critical, }; Index: linux-pm/drivers/thermal/intel/intel_quark_dts_thermal.c =================================================================== --- linux-pm.orig/drivers/thermal/intel/intel_quark_dts_thermal.c +++ linux-pm/drivers/thermal/intel/intel_quark_dts_thermal.c @@ -288,7 +288,7 @@ static int sys_change_mode(struct therma return ret; } -static struct thermal_zone_device_ops tzone_ops = { +static const struct thermal_zone_device_ops tzone_ops = { .get_temp = sys_get_curr_temp, .set_trip_temp = sys_set_trip_temp, .change_mode = sys_change_mode, Index: linux-pm/drivers/thermal/intel/int340x_thermal/processor_thermal_device_pci.c =================================================================== --- linux-pm.orig/drivers/thermal/intel/int340x_thermal/processor_thermal_device_pci.c +++ linux-pm/drivers/thermal/intel/int340x_thermal/processor_thermal_device_pci.c @@ -233,7 +233,7 @@ static int get_trip_temp(struct proc_the return temp; } -static struct thermal_zone_device_ops tzone_ops = { +static const struct thermal_zone_device_ops tzone_ops = { .get_temp = sys_get_curr_temp, .set_trip_temp = sys_set_trip_temp, }; Index: linux-pm/drivers/thermal/intel/intel_soc_dts_iosf.c =================================================================== --- linux-pm.orig/drivers/thermal/intel/intel_soc_dts_iosf.c +++ linux-pm/drivers/thermal/intel/intel_soc_dts_iosf.c @@ -168,7 +168,7 @@ static int sys_get_curr_temp(struct ther return 0; } -static struct thermal_zone_device_ops tzone_ops = { +static const struct thermal_zone_device_ops tzone_ops = { .get_temp = sys_get_curr_temp, .set_trip_temp = sys_set_trip_temp, }; Index: linux-pm/drivers/thermal/intel/x86_pkg_temp_thermal.c =================================================================== --- linux-pm.orig/drivers/thermal/intel/x86_pkg_temp_thermal.c +++ linux-pm/drivers/thermal/intel/x86_pkg_temp_thermal.c @@ -166,7 +166,7 @@ sys_set_trip_temp(struct thermal_zone_de } /* Thermal zone callback registry */ -static struct thermal_zone_device_ops tzone_ops = { +static const struct thermal_zone_device_ops tzone_ops = { .get_temp = sys_get_curr_temp, .set_trip_temp = sys_set_trip_temp, };