From nobody Sun May 19 06:04:48 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 178B013FD9F; Tue, 23 Apr 2024 19:03:19 +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=1713899002; cv=none; b=JVP75drl8psQwAWIxDaevhh5fIpshhH1CYH+lMaJ1dxtQksDm8GNs0UjfM3oKQ0T15DgU57exRbhVYM8eSRjZvR2fWU4s/ehz4i/jtgvYheE7dIQ/UWQ7yNfCRLjCpcDs4qFLjE8638sC//GaCP5I9wt1nzqGTFFFuj97Fg4WTo= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713899002; c=relaxed/simple; bh=6CA2yUI4lZF+hvaY11aNP5dxnASGSWgiQeLpU5ZmBgw=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=FJybiNiTBBZ5dj+sOgajs6VolSYV6Vk1aOa2eBNAPKk6YuH6rqca9ffQ7WFLYMJn34RGQP+jwv/suv0ehns8CmWKVcPEGt2xzO8QMsCTiwOYyp4kK9vEikl8X5/LSxNIC4pmKv9++De0U/S0JWNjSDYiQgeQBVWMOKhr+XQUuY8= 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=n80HJiyp 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="n80HJiyp" 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 6.0.0) id c5f9482874c97825; Tue, 23 Apr 2024 20:03:18 +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 0FECB66DB86; Tue, 23 Apr 2024 20:03:18 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=rjwysocki.net; s=dkim; t=1713895398; bh=6CA2yUI4lZF+hvaY11aNP5dxnASGSWgiQeLpU5ZmBgw=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=n80HJiypBaaZCHp81z6vvN3RTpS3nCuHp/aMfIV5E0OHUbvkaxkKZn8nW6hmezcUJ H3i+5aeG7mP5D6RjrZy5frXj+sbdQ3maH+Q8k+BWgEiy6oINg/LeRtfy8e++FYYkLh nZHbFY6oIdQXvckByW3fKQBopNZVCU0rhhXV2/0CV7+K8Rky8pliuAaGLutJtG6wV0 EhVCoZXS7WuFlzn3hDvuYeuukvoLxlCG6GH5mFR2M7NXCUffO+Re+L+Tc/IOotcOuc C4gDK79Dl4W0BP7vK9lkBzotGEeoZ+21GWi6WhEtrAtcVHXwvbN8bV101QQJmCwRUt ADf+8V+Dpl7QQ== From: "Rafael J. Wysocki" To: Linux PM Cc: LKML , "Rafael J. Wysocki" , Lukasz Luba , Daniel Lezcano Subject: [PATCH v1 2/3] thermal/debugfs: Pass cooling device state to thermal_debug_cdev_add() Date: Tue, 23 Apr 2024 20:00:57 +0200 Message-ID: <2181352.irdbgypaU6@kreacher> In-Reply-To: <5774279.DvuYhMxLoT@kreacher> References: <5774279.DvuYhMxLoT@kreacher> 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: gggruggvucftvghtrhhoucdtuddrgedvledrudeluddguddvudcutefuodetggdotefrodftvfcurfhrohhfihhlvgemucfjqffogffrnfdpggftiffpkfenuceurghilhhouhhtmecuudehtdenucesvcftvggtihhpihgvnhhtshculddquddttddmnecujfgurhephffvvefufffkjghfggfgtgesthfuredttddtjeenucfhrhhomhepfdftrghfrggvlhculfdrucghhihsohgtkhhifdcuoehrjhifsehrjhifhihsohgtkhhirdhnvghtqeenucggtffrrghtthgvrhhnpedvffeuiedtgfdvtddugeeujedtffetteegfeekffdvfedttddtuefhgeefvdejhfenucfkphepudelhedrudefiedrudelrdelgeenucevlhhushhtvghrufhiiigvpedtnecurfgrrhgrmhepihhnvghtpeduleehrddufeeirdduledrleegpdhhvghlohepkhhrvggrtghhvghrrdhlohgtrghlnhgvthdpmhgrihhlfhhrohhmpedftfgrfhgrvghlucflrdcuhgihshhotghkihdfuceorhhjfiesrhhjfiihshhotghkihdrnhgvtheqpdhnsggprhgtphhtthhopeehpdhrtghpthhtoheplhhinhhugidqphhmsehvghgvrhdrkhgvrhhnvghlrdhorhhgpdhrtghpthhtoheplhhinhhugidqkhgvrhhnvghlsehvghgvrhdrkhgvrhhnvghlrdhorhhgpdhrtghpthhtoheprhgrfhgrvghlsehkvghrnhgvlhdrohhrghdprhgtphhtthhopehluhhkrghsiidrlhhusggrsegrrhhmrdgtohhmpdhrtghpthhtohepuggrnhhivghlrdhlvgiitggrnhhosehlihhnrghrohdrohhrgh X-DCC--Metrics: v370.home.net.pl 1024; Body=5 Fuz1=5 Fuz2=5 Content-Type: text/plain; charset="utf-8" From: Rafael J. Wysocki If cdev_dt_seq_show() runs before the first state transition of a cooling device, it will not print any state residency information for it, even though it might be reasonably expected to print residency information for the initial state of the cooling device. For this reason, rearrange the code to get the initial state of a cooling device at the registration time and pass it to thermal_debug_cdev_add(), so that the latter can create a duration record for that state which will allow cdev_dt_seq_show() to print its residency information. Fixes: 755113d76786 ("thermal/debugfs: Add thermal cooling device debugfs i= nformation") Reported-by: Lukasz Luba Signed-off-by: Rafael J. Wysocki --- drivers/thermal/thermal_core.c | 9 +++++++-- drivers/thermal/thermal_debugfs.c | 12 ++++++++++-- drivers/thermal/thermal_debugfs.h | 4 ++-- 3 files changed, 19 insertions(+), 6 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 @@ -928,6 +928,7 @@ __thermal_cooling_device_register(struct { struct thermal_cooling_device *cdev; struct thermal_zone_device *pos =3D NULL; + unsigned long current_state; int id, ret; =20 if (!ops || !ops->get_max_state || !ops->get_cur_state || @@ -965,6 +966,10 @@ __thermal_cooling_device_register(struct if (ret) goto out_cdev_type; =20 + ret =3D cdev->ops->get_cur_state(cdev, ¤t_state); + if (ret) + goto out_cdev_type; + thermal_cooling_device_setup_sysfs(cdev); =20 ret =3D dev_set_name(&cdev->device, "cooling_device%d", cdev->id); @@ -978,6 +983,8 @@ __thermal_cooling_device_register(struct return ERR_PTR(ret); } =20 + thermal_debug_cdev_add(cdev, current_state); + /* Add 'this' new cdev to the global cdev list */ mutex_lock(&thermal_list_lock); =20 @@ -993,8 +1000,6 @@ __thermal_cooling_device_register(struct =20 mutex_unlock(&thermal_list_lock); =20 - thermal_debug_cdev_add(cdev); - return cdev; =20 out_cooling_dev: Index: linux-pm/drivers/thermal/thermal_debugfs.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_debugfs.c +++ linux-pm/drivers/thermal/thermal_debugfs.c @@ -466,8 +466,9 @@ void thermal_debug_cdev_state_update(con * Allocates a cooling device object for debug, initializes the * statistics and create the entries in sysfs. * @cdev: a pointer to a cooling device + * @state: current state of the cooling device */ -void thermal_debug_cdev_add(struct thermal_cooling_device *cdev) +void thermal_debug_cdev_add(struct thermal_cooling_device *cdev, int state) { struct thermal_debugfs *thermal_dbg; struct cdev_debugfs *cdev_dbg; @@ -484,9 +485,16 @@ void thermal_debug_cdev_add(struct therm INIT_LIST_HEAD(&cdev_dbg->durations[i]); } =20 - cdev_dbg->current_state =3D 0; + cdev_dbg->current_state =3D state; cdev_dbg->timestamp =3D ktime_get(); =20 + /* + * Create a record for the initial cooling device state, so its + * duration will be printed by cdev_dt_seq_show() as expected if it + * runs before the first state transition. + */ + thermal_debugfs_cdev_record_get(thermal_dbg, cdev_dbg->durations, state); + debugfs_create_file("trans_table", 0400, thermal_dbg->d_top, thermal_dbg, &tt_fops); =20 Index: linux-pm/drivers/thermal/thermal_debugfs.h =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_debugfs.h +++ linux-pm/drivers/thermal/thermal_debugfs.h @@ -2,7 +2,7 @@ =20 #ifdef CONFIG_THERMAL_DEBUGFS void thermal_debug_init(void); -void thermal_debug_cdev_add(struct thermal_cooling_device *cdev); +void thermal_debug_cdev_add(struct thermal_cooling_device *cdev, int state= ); void thermal_debug_cdev_remove(struct thermal_cooling_device *cdev); void thermal_debug_cdev_state_update(const struct thermal_cooling_device *= cdev, int state); void thermal_debug_tz_add(struct thermal_zone_device *tz); @@ -14,7 +14,7 @@ void thermal_debug_tz_trip_down(struct t void thermal_debug_update_stats(struct thermal_zone_device *tz); #else static inline void thermal_debug_init(void) {} -static inline void thermal_debug_cdev_add(struct thermal_cooling_device *c= dev) {} +static inline void thermal_debug_cdev_add(struct thermal_cooling_device *c= dev, int state) {} static inline void thermal_debug_cdev_remove(struct thermal_cooling_device= *cdev) {} static inline void thermal_debug_cdev_state_update(const struct thermal_co= oling_device *cdev, int state) {}