From nobody Thu Nov 28 02:56:03 2024 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 C97A61E04B4; Fri, 4 Oct 2024 19:43:11 +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=1728070995; cv=none; b=ugJ+lJl9LWF2o+0O0YEl+Vha6QE/TKkuQkRw/WCu769X+G88UJuGWtYYL3j9EOTY3D061WSvlwHD3FP1sEgnRnckP3/OQKIUuQbbSVeEai2NjpvLp9nVlbwkUVqY7w5Ahp/6DcYvRGv0CfGYCBMrgY/WZHQZppoNf9w6ImTErwU= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728070995; c=relaxed/simple; bh=0P2WxnUpd1AyHHvrMH196mT7Oa6TA2+VCu5CwDH3EHo=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=XPL4ss9bR/jJAravPCqeoq9pKB9RdKWxOKnPponJW7CKjp86/Zt2sTg8EpzDU0kGiB08k9dLY76b7rGLMd7eAmKsiqraRuOKSn8RPPA0TWsjH3hmDXk2EsKIvbABp6zEVWBkn6q7gfNGBBZa6DVXl7/7LmjiD+lcFWzo9/BDDOs= 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=kW2VDnhy 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="kW2VDnhy" 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 974918518edb54b4; Fri, 4 Oct 2024 21:43:03 +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 B12B76A9505; Fri, 4 Oct 2024 21:43:03 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=rjwysocki.net; s=dkim; t=1728070983; bh=0P2WxnUpd1AyHHvrMH196mT7Oa6TA2+VCu5CwDH3EHo=; h=From:Subject:Date; b=kW2VDnhyQwQOcey/bOFd8nuhVmqF4pPrrWOb+529WlA4B03S04luBlvT25Vsw+5am SdBBNQqYv00mWnqBdKYTdBQGR+T+CGmKqlznKkzQY3RO3uclHwWLvilRrgcjjm+edN Fyk1iuOtJrkGbX5L7z8FYEW/6kUsFL7lepogRp50VmY3L6+nRcfS8+CpsaAW+JfFhl 1eRzEt81NPArvex3FE34l3fBg9mq8QTkicc8TXi1LGu44uBKJ+rOw91zKf+yZF0QOd 2+1VxYrWxDN4gPOjbog7l0yoO/Qscxdz2FTwtR6sGWHCKmRx2EbZmZilPfRqfO/6OS C69C2uhFUyvGw== From: "Rafael J. Wysocki" To: Linux PM Cc: LKML , Daniel Lezcano , Lukasz Luba , Zhang Rui , Srinivas Pandruvada Subject: [PATCH v2 09/12] thermal: core: Update thermal zones after cooling device binding Date: Fri, 04 Oct 2024 21:33:28 +0200 Message-ID: <2226302.Icojqenx9y@rjwysocki.net> In-Reply-To: <2215082.irdbgypaU6@rjwysocki.net> References: <2215082.irdbgypaU6@rjwysocki.net> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-CLIENT-IP: 195.136.19.94 X-CLIENT-HOSTNAME: 195.136.19.94 X-VADE-SPAMSTATE: clean X-VADE-SPAMCAUSE: gggruggvucftvghtrhhoucdtuddrgeeftddrvddvfedgudegtdcutefuodetggdotefrodftvfcurfhrohhfihhlvgemucfjqffogffrnfdpggftiffpkfenuceurghilhhouhhtmecuudehtdenucesvcftvggtihhpihgvnhhtshculddquddttddmnecujfgurhephffvvefufffkjghfggfgtgesthfuredttddtjeenucfhrhhomhepfdftrghfrggvlhculfdrucghhihsohgtkhhifdcuoehrjhifsehrjhifhihsohgtkhhirdhnvghtqeenucggtffrrghtthgvrhhnpeefudduuedtuefgleffudeigeeitdeufeelvdejgefftdethffhhfethfeljefgteenucffohhmrghinhepkhgvrhhnvghlrdhorhhgnecukfhppeduleehrddufeeirdduledrleegnecuvehluhhsthgvrhfuihiivgeptdenucfrrghrrghmpehinhgvthepudelhedrudefiedrudelrdelgedphhgvlhhopehkrhgvrggthhgvrhdrlhhotggrlhhnvghtpdhmrghilhhfrhhomheprhhjfiesrhhjfiihshhotghkihdrnhgvthdpnhgspghrtghpthhtohepiedprhgtphhtthhopehlihhnuhigqdhpmhesvhhgvghrrdhkvghrnhgvlhdrohhrghdprhgtphhtthhopehlihhnuhigqdhkvghrnhgvlhesvhhgvghrrdhkvghrnhgvlhdrohhrghdprhgtphhtthhopegurghnihgvlhdrlhgviigtrghnoheslhhinhgrrhhordhorhhgpdhrtghpthhtoheplhhukhgrshiirdhluhgsrgesrghrmhdrtghomhdprhgtphhtthhopehruhhirdi X-DCC--Metrics: v370.home.net.pl 0; Body=6 Fuz1=6 Fuz2=6 Content-Type: text/plain; charset="utf-8" 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 Reviewed-by: Lukasz Luba --- This is a new iteration of https://lore.kernel.org/linux-pm/3603909.iIbC2pHGDl@rjwysocki.net/ v1 -> v2: Rebase. --- drivers/thermal/thermal_core.c | 23 +++++++++++++---------- 1 file changed, 13 insertions(+), 10 deletions(-) Index: linux-pm/drivers/thermal/thermal_core.c =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D --- linux-pm.orig/drivers/thermal/thermal_core.c +++ linux-pm/drivers/thermal/thermal_core.c @@ -933,13 +933,14 @@ void print_bind_err_msg(struct thermal_z cdev->type, thermal_zone_trip_id(tz, trip), ret); } =20 -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 =3D false; =20 if (!tz->ops.should_bind) - return; + return false; =20 for_each_trip_desc(tz, td) { struct thermal_trip *trip =3D &td->trip; @@ -954,9 +955,15 @@ static void __thermal_zone_cdev_bind(str continue; =20 ret =3D thermal_bind_cdev_to_trip(tz, trip, cdev, &c); - if (ret) + if (ret) { print_bind_err_msg(tz, trip, cdev, ret); + continue; + } + + update_tz =3D true; } + + return update_tz; } =20 static void thermal_zone_cdev_bind(struct thermal_zone_device *tz, @@ -964,7 +971,8 @@ static void thermal_zone_cdev_bind(struc { mutex_lock(&tz->lock); =20 - __thermal_zone_cdev_bind(tz, cdev); + if (__thermal_zone_cdev_bind(tz, cdev)) + __thermal_zone_device_update(tz, THERMAL_EVENT_UNSPECIFIED); =20 mutex_unlock(&tz->lock); } @@ -991,7 +999,7 @@ __thermal_cooling_device_register(struct const struct thermal_cooling_device_ops *ops) { struct thermal_cooling_device *cdev; - struct thermal_zone_device *pos =3D NULL; + struct thermal_zone_device *pos; unsigned long current_state; int id, ret; =20 @@ -1067,11 +1075,6 @@ __thermal_cooling_device_register(struct list_for_each_entry(pos, &thermal_tz_list, node) thermal_zone_cdev_bind(pos, cdev); =20 - 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); =20 return cdev;