From patchwork Sat Sep 14 10:36:51 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: 828775 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 119A41CF2B1; Sat, 14 Sep 2024 11:03:44 +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=1726311827; cv=none; b=HQiv2vHcOfLj7bxGilcslCEAnQs2xwsIrAx16tP6bCeOLBlhI7VRPj4/2NAOgsw0vMgjwKcKt59VqUu0zcUnj2J6dns0JpOXoJTbmXO/rEIr6Qxp9Iqi46Lrmm9MCbGPyFbk/T+mNKtFSvjd72/6W1Y5wH08zbZk0jb3P5OhsIo= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1726311827; c=relaxed/simple; bh=9WXyKvAcLO2BMZyBokhszmnjfpwu44G6g4cyK24kuwI=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=E3WaN0su0n1crrAPjcn6BENeIax6+uhgpqIet/595jIolCMSOZCOlxp7LSvaI0FywBurmHAJOqNem9z8TCumJZA2sA9D5lhrmYqiJADd9VdMu6QO6vp8NDsxVkQNx+k2ZG+6m5MZEMT4MQ78j1NUdtZcWi1NCMky1taO6YVxL6k= 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; dkim=fail (2048-bit key) header.d=rjwysocki.net header.i=@rjwysocki.net header.b=Tq89ZFBa reason="signature verification failed"; 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 Authentication-Results: smtp.subspace.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=rjwysocki.net header.i=@rjwysocki.net header.b="Tq89ZFBa" 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 6.2.0) id 5b635f05774a90d9; Sat, 14 Sep 2024 13:03:43 +0200 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 1725F8532AE; Sat, 14 Sep 2024 13:03:42 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=rjwysocki.net; s=dkim; t=1726311822; bh=9WXyKvAcLO2BMZyBokhszmnjfpwu44G6g4cyK24kuwI=; h=From:Subject:Date; b=Tq89ZFBa9frfgbK0J4wzD807UM9ILLu8Uiki9tGXyiOJJ3gvj8N5m5qpPrXsn7ldY TeoXDhU6BXJs99gqFt9h1S5xNBgHfPm9sUxXm63phvXGRJEH2SgMmnnE7HkXlJWzev TklUPBIJGW8F/hU1YFIbKM+YZVT8og9n5kDJWdGse0WKM7aW2GxaWs7m8fPZvMBcuM driZAi7MsbxnKZ59wL8bbYDpqNOtak5zxpd8IfxsVxJUjrkhezEc9Yg2fzGDYDDR6B BvlNKxceDGVu5kRcCYcIdZ8HAhS1XD6N+xrrgvaxt6H6hSjorPzq4W6KkuRB4ReFxV IZLB1/fQDtHZQ== From: "Rafael J. Wysocki" To: Linux PM Cc: LKML , Daniel Lezcano , Lukasz Luba , Zhang Rui Subject: [RFC PATCH for 6.13 v1 09/20] thermal: core: Update thermal zones after cooling device binding Date: Sat, 14 Sep 2024 12:36:51 +0200 Message-ID: <3603909.iIbC2pHGDl@rjwysocki.net> In-Reply-To: <6100907.lOV4Wx5bFT@rjwysocki.net> References: <6100907.lOV4Wx5bFT@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: gggruggvucftvghtrhhoucdtuddrgeeftddrudektddgfeeiucetufdoteggodetrfdotffvucfrrhhofhhilhgvmecujffqoffgrffnpdggtffipffknecuuegrihhlohhuthemucduhedtnecusecvtfgvtghiphhivghnthhsucdlqddutddtmdenogfuphgrmhfkphculdeftddtmdenucfjughrpefhvfevufffkfgjfhgggfgtsehtufertddttdejnecuhfhrohhmpedftfgrfhgrvghlucflrdcuhgihshhotghkihdfuceorhhjfiesrhhjfiihshhotghkihdrnhgvtheqnecuggftrfgrthhtvghrnhepvdffueeitdfgvddtudegueejtdffteetgeefkeffvdeftddttdeuhfegfedvjefhnecukfhppeduleehrddufeeirdduledrleegnecuufhprghmkfhppeduleehrddufeeirdduledrleegnecuvehluhhsthgvrhfuihiivgepudenucfrrghrrghmpehinhgvthepudelhedrudefiedrudelrdelgedphhgvlhhopehkrhgvrggthhgvrhdrlhhotggrlhhnvghtpdhmrghilhhfrhhomheprhhjfiesrhhjfiihshhotghkihdrnhgvthdpnhgspghrtghpthhtohephedprhgtphhtthhopehlihhnuhigqdhpmhesvhhgvghrrdhkvghrnhgvlhdrohhrghdprhgtphhtthhopehlihhnuhigqdhkvghrnhgvlhesvhhgvghrrdhkvghrnhgvlhdrohhrghdprhgtphhtthhopegurghnihgvlhdrlhgviigtrghnoheslhhinhgrrhhordhorhhgpdhrtghpthhtoheplhhukhgrshiirdhluhgsrgesrghrmhdrtghomhdprhgtphhtthhopehruhhirdiihhgrnhhgsehinhhtvghlrdgtohhm X-DCC--Metrics: v370.home.net.pl 1024; Body=25 Fuz1=25 Fuz2=25 From: Rafael J. Wysocki If a new cooling device is registered and it is bound to at least one trip point in a given thermal zone, that thermal zone needs to be updated via __thermal_zone_device_update(). Instead of doing this with the help of the need_update atomic field in struct thermal_zone_device, which is not particularly straightforward, make __thermal_zone_cdev_bind() return a bool value indicating whether or not the given thermal zone needs to be updated because a new cooling device has been bound to it and update thermal_zone_cdev_bind() to call __thermal_zone_device_update() when this value is "true". No intentional functional impact. Signed-off-by: Rafael J. Wysocki --- drivers/thermal/thermal_core.c | 23 +++++++++++++---------- 1 file changed, 13 insertions(+), 10 deletions(-) Index: linux-pm/drivers/thermal/thermal_core.c =================================================================== --- linux-pm.orig/drivers/thermal/thermal_core.c +++ linux-pm/drivers/thermal/thermal_core.c @@ -919,13 +919,14 @@ void print_bind_err_msg(struct thermal_z cdev->type, thermal_zone_trip_id(tz, &td->trip), ret); } -static void __thermal_zone_cdev_bind(struct thermal_zone_device *tz, +static bool __thermal_zone_cdev_bind(struct thermal_zone_device *tz, struct thermal_cooling_device *cdev) { struct thermal_trip_desc *td; + bool update_tz = false; if (!tz->ops.should_bind) - return; + return false; for_each_trip_desc(tz, td) { struct cooling_spec c = { @@ -939,9 +940,15 @@ static void __thermal_zone_cdev_bind(str continue; ret = thermal_bind_cdev_to_trip(tz, td, cdev, &c); - if (ret) + if (ret) { print_bind_err_msg(tz, td, cdev, ret); + continue; + } + + update_tz = true; } + + return update_tz; } static void thermal_zone_cdev_bind(struct thermal_zone_device *tz, @@ -949,7 +956,8 @@ static void thermal_zone_cdev_bind(struc { guard(thermal_zone)(tz); - __thermal_zone_cdev_bind(tz, cdev); + if (__thermal_zone_cdev_bind(tz, cdev)) + __thermal_zone_device_update(tz, THERMAL_EVENT_UNSPECIFIED); } /** @@ -974,7 +982,7 @@ __thermal_cooling_device_register(struct const struct thermal_cooling_device_ops *ops) { struct thermal_cooling_device *cdev; - struct thermal_zone_device *pos = NULL; + struct thermal_zone_device *pos; unsigned long current_state; int id, ret; @@ -1050,11 +1058,6 @@ __thermal_cooling_device_register(struct list_for_each_entry(pos, &thermal_tz_list, node) thermal_zone_cdev_bind(pos, cdev); - list_for_each_entry(pos, &thermal_tz_list, node) - if (atomic_cmpxchg(&pos->need_update, 1, 0)) - thermal_zone_device_update(pos, - THERMAL_EVENT_UNSPECIFIED); - mutex_unlock(&thermal_list_lock); return cdev;