From patchwork Sat Sep 14 10:34:06 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: 13804369 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 0508A1CDFD5; Sat, 14 Sep 2024 11:07:08 +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=1726312030; cv=none; b=GODhNhIKEuMxdhklRLJ27SNrc8jHaJMAxlwz7eoj7yQvtDCEBi8mnNOdlOhVPhAWahqzk3FbySlfBd97KdnzkLs/z6BnjLwmEp7VaEHLyQje5DxAVuUWu1ieYLV1+NiedbtBI4Dn+RquJq4kkjFW0Ei26nhuMeHyML2wqFjUszo= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1726312030; c=relaxed/simple; bh=pbuB+DXAFqYaCx2qxAElUt1m641oVTnWEEOF+ktc0N0=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=DIAdITGcrMdEk/trDc65TrlAGnSUIER5Ib09HIvSiqdX7SUxcS7FVGpa9zsTPOtAXitC/xpIx2MXtMUP8X0Z4BJhUt66/a/IaWaMaXqTAsXpa6//h+019klgwlPPGy26KFMCz2ss+qGFz34ZN5Dmra/vixwXLvdar1lDvaYb7ac= 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=nrYeQpi5 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="nrYeQpi5" 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 9133f7438f486c6e; Sat, 14 Sep 2024 13:07:07 +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 7C1708532AE; Sat, 14 Sep 2024 13:07:06 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=rjwysocki.net; s=dkim; t=1726312026; bh=pbuB+DXAFqYaCx2qxAElUt1m641oVTnWEEOF+ktc0N0=; h=From:Subject:Date; b=nrYeQpi5LSq/fe7en8vGuGm80zICtUU24v//RZboPJ7n3YZ36Vi6SSrzzGzmY7ms8 k1lEIQLPKGm6evkgAIfkXQoMv/eJF581EeHBz31P09b2XJUa1spHzonQEQ9rZo52eA gK5A88p4prxIMjoF5BuN2IE5KGRdKtpyalcNitebTGoV9lWGbDhuJDaWU+yeQ0+227 ps/lUT1yT3vDUATYK/cvN4W+IoSv/VArvoHFvKKax29ZhlfprXo81qesg+HrmqybFi Mgu0eNFWEGKj9xjTTaqAYDuWu3sRY/RueQySo0EhKRh/31UF4EUCR2l9yl3pV0jntC vwPgBhSw8mtCw== From: "Rafael J. Wysocki" To: Linux PM Cc: LKML , Daniel Lezcano , Lukasz Luba , Zhang Rui Subject: [RFC PATCH for 6.13 v1 07/20] thermal: core: Mark thermal zones as exiting before unregistration Date: Sat, 14 Sep 2024 12:34:06 +0200 Message-ID: <1997536.PYKUYFuaPT@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: gggruggvucftvghtrhhoucdtuddrgeeftddrudektddgfeejucetufdoteggodetrfdotffvucfrrhhofhhilhgvmecujffqoffgrffnpdggtffipffknecuuegrihhlohhuthemucduhedtnecusecvtfgvtghiphhivghnthhsucdlqddutddtmdenogfuphgrmhfkphculdeftddtmdenucfjughrpefhvfevufffkfgjfhgggfgtsehtufertddttdejnecuhfhrohhmpedftfgrfhgrvghlucflrdcuhgihshhotghkihdfuceorhhjfiesrhhjfiihshhotghkihdrnhgvtheqnecuggftrfgrthhtvghrnhepvdffueeitdfgvddtudegueejtdffteetgeefkeffvdeftddttdeuhfegfedvjefhnecukfhppeduleehrddufeeirdduledrleegnecuufhprghmkfhppeduleehrddufeeirdduledrleegnecuvehluhhsthgvrhfuihiivgeptdenucfrrghrrghmpehinhgvthepudelhedrudefiedrudelrdelgedphhgvlhhopehkrhgvrggthhgvrhdrlhhotggrlhhnvghtpdhmrghilhhfrhhomheprhhjfiesrhhjfiihshhotghkihdrnhgvthdpnhgspghrtghpthhtohephedprhgtphhtthhopehlihhnuhigqdhpmhesvhhgvghrrdhkvghrnhgvlhdrohhrghdprhgtphhtthhopehlihhnuhigqdhkvghrnhgvlhesvhhgvghrrdhkvghrnhgvlhdrohhrghdprhgtphhtthhopegurghnihgvlhdrlhgviigtrghnoheslhhinhgrrhhordhorhhgpdhrtghpthhtoheplhhukhgrshiirdhluhgsrgesrghrmhdrtghomhdprhgtphhtthhopehruhhirdiihhgrnhhgsehinhhtvghlrdgtohhm X-DCC--Metrics: v370.home.net.pl 1024; Body=30 Fuz1=30 Fuz2=30 From: Rafael J. Wysocki In analogy with a previous change in the thermal zone registration code path, to ensure that __thermal_zone_device_update() will return early for thermal zones that are going away, introduce a thermal zone state flag representing the "exit" state and set it along with deleting the thermal zone from thermal_tz_list. Signed-off-by: Rafael J. Wysocki --- drivers/thermal/thermal_core.c | 5 +++-- drivers/thermal/thermal_core.h | 1 + 2 files changed, 4 insertions(+), 2 deletions(-) Index: linux-pm/drivers/thermal/thermal_core.c =================================================================== --- linux-pm.orig/drivers/thermal/thermal_core.c +++ linux-pm/drivers/thermal/thermal_core.c @@ -1563,10 +1563,11 @@ struct device *thermal_zone_device(struc } EXPORT_SYMBOL_GPL(thermal_zone_device); -static void thermal_zone_del_from_list(struct thermal_zone_device *tz) +static void thermal_zone_exit(struct thermal_zone_device *tz) { guard(thermal_zone)(tz); + tz->state |= TZ_STATE_FLAG_EXIT; list_del(&tz->node); } @@ -1594,7 +1595,7 @@ void thermal_zone_device_unregister(stru return; } - thermal_zone_del_from_list(tz); + thermal_zone_exit(tz); /* Unbind all cdevs associated with 'this' thermal zone */ list_for_each_entry(cdev, &thermal_cdev_list, node) Index: linux-pm/drivers/thermal/thermal_core.h =================================================================== --- linux-pm.orig/drivers/thermal/thermal_core.h +++ linux-pm/drivers/thermal/thermal_core.h @@ -65,6 +65,7 @@ struct thermal_governor { #define TZ_STATE_FLAG_SUSPENDED BIT(0) #define TZ_STATE_FLAG_RESUMING BIT(1) #define TZ_STATE_FLAG_INIT BIT(2) +#define TZ_STATE_FLAG_EXIT BIT(3) #define TZ_STATE_READY 0