From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id C2A35C83F04 for ; Thu, 3 Jul 2025 08:12:45 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 02E4A10E7E5; Thu, 3 Jul 2025 08:12:45 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=bootlin.com header.i=@bootlin.com header.b="F8EUjvtY"; dkim-atps=neutral Received: from relay1-d.mail.gandi.net (relay1-d.mail.gandi.net [217.70.183.193]) by gabe.freedesktop.org (Postfix) with ESMTPS id DB0C010E7E5 for ; Thu, 3 Jul 2025 08:12:43 +0000 (UTC) Received: by mail.gandi.net (Postfix) with ESMTPSA id 25287432E9; Thu, 3 Jul 2025 08:12:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=gm1; t=1751530362; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:autocrypt:autocrypt; bh=rfm5RqSOeqx29wfYzFNkHGyAWsHuOA5T9K0UAgezsaE=; b=F8EUjvtYj6ZMcuMZcC/kUhc5ST8SLmatQ3IUbVi1VD86J/dDNhpGGpKdf7qJYNIso7SOUH i2EQ1v0J81NPy75KIuRCRaS3e6rbBTJZFw/za1koAiQvbM5szBGK0D4+VF3bGYcNJwRx/Z R6BFmxCHcjvHpJOlpbSf3eXzwODyLNkF1VaP3OIATsdF2pHAHRl3IvYZ22XsO6OTPof2aa B/JTk1AArwmKIMs7GTdUSVEIE7QcSjpEcPz0jVbZcXyp49n4hFhkjMKQ36OlQ5nyHc5DuR TDxQnW6/PaYCHlyBPVLfFIbIySeo90opy/rq05LXW/cHg52Iv6VUEu4rVbt9Fw== Message-ID: Date: Thu, 3 Jul 2025 10:12:41 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 1/1] drm: Simplify drmm_alloc_ordered_workqueue return To: Matthew Brost , dri-devel@lists.freedesktop.org References: <20250702232831.3271328-1-matthew.brost@intel.com> <20250702232831.3271328-2-matthew.brost@intel.com> Content-Language: en-US From: Louis Chauvet Autocrypt: addr=louis.chauvet@bootlin.com; 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charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-GND-State: clean X-GND-Score: -100 X-GND-Cause: gggruggvucftvghtrhhoucdtuddrgeeffedrtdefgdduleejjecutefuodetggdotefrodftvfcurfhrohhfihhlvgemucfitefpfffkpdcuggftfghnshhusghstghrihgsvgenuceurghilhhouhhtmecufedtudenucesvcftvggtihhpihgvnhhtshculddquddttddmnecujfgurhepkfffgggfuffvfhfhjggtgfesthekredttddvjeenucfhrhhomhepnfhouhhishcuvehhrghuvhgvthcuoehlohhuihhsrdgthhgruhhvvghtsegsohhothhlihhnrdgtohhmqeenucggtffrrghtthgvrhhnpeeuvdetgeevkefhiedugfekveejieeiveeigeeiveduffehfffhgeffffetheekgfenucffohhmrghinhepsghoohhtlhhinhdrtghomhenucfkphepledtrdekledrudeifedruddvjeenucevlhhushhtvghrufhiiigvpedtnecurfgrrhgrmhepihhnvghtpeeltddrkeelrdduieefrdduvdejpdhhvghloheplgduledvrdduieekrddtrddvtdgnpdhmrghilhhfrhhomheplhhouhhishdrtghhrghuvhgvthessghoohhtlhhinhdrtghomhdpnhgspghrtghpthhtohepvddprhgtphhtthhopehmrghtthhhvgifrdgsrhhoshhtsehinhhtvghlrdgtohhmpdhrtghpthhtohepughrihdquggvvhgvlheslhhishhtshdrfhhrvggvuggvshhkthhophdrohhrgh X-GND-Sasl: louis.chauvet@bootlin.com X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Le 03/07/2025 à 01:28, Matthew Brost a écrit : > Rather than returning ERR_PTR or NULL on failure, replace the NULL > return with ERR_PTR(-ENOMEM). This simplifies error handling at the > caller. While here, add kernel documentation for > drmm_alloc_ordered_workqueue. > > Cc: Louis Chauvet > Signed-off-by: Matthew Brost Reviewed-by: Louis Chauvet As you need it in xe, I don't know the process to apply the patch. Should I apply it on drm-misc-next? Thanks, Louis Chauvet > --- > drivers/gpu/drm/vkms/vkms_crtc.c | 2 -- > include/drm/drm_managed.h | 15 +++++++++++++-- > 2 files changed, 13 insertions(+), 4 deletions(-) > > diff --git a/drivers/gpu/drm/vkms/vkms_crtc.c b/drivers/gpu/drm/vkms/vkms_crtc.c > index 8c9898b9055d..e60573e0f3e9 100644 > --- a/drivers/gpu/drm/vkms/vkms_crtc.c > +++ b/drivers/gpu/drm/vkms/vkms_crtc.c > @@ -302,8 +302,6 @@ struct vkms_output *vkms_crtc_init(struct drm_device *dev, struct drm_plane *pri > vkms_out->composer_workq = drmm_alloc_ordered_workqueue(dev, "vkms_composer", 0); > if (IS_ERR(vkms_out->composer_workq)) > return ERR_CAST(vkms_out->composer_workq); > - if (!vkms_out->composer_workq) > - return ERR_PTR(-ENOMEM); > > return vkms_out; > } > diff --git a/include/drm/drm_managed.h b/include/drm/drm_managed.h > index 53017cc609ac..72bfac002c06 100644 > --- a/include/drm/drm_managed.h > +++ b/include/drm/drm_managed.h > @@ -129,14 +129,25 @@ void __drmm_mutex_release(struct drm_device *dev, void *res); > > void __drmm_workqueue_release(struct drm_device *device, void *wq); > > +/** > + * drmm_alloc_ordered_workqueue - &drm_device managed alloc_ordered_workqueue() > + * @dev: DRM device > + * @fmt: printf format for the name of the workqueue > + * @flags: WQ_* flags (only WQ_FREEZABLE and WQ_MEM_RECLAIM are meaningful) > + * @args: args for @fmt > + * > + * This is a &drm_device-managed version of alloc_ordered_workqueue(). The > + * allocated workqueue is automatically destroyed on the final drm_dev_put(). > + * > + * Returns: workqueue on success, negative ERR_PTR otherwise. > + */ > #define drmm_alloc_ordered_workqueue(dev, fmt, flags, args...) \ > ({ \ > struct workqueue_struct *wq = alloc_ordered_workqueue(fmt, flags, ##args); \ > wq ? ({ \ > int ret = drmm_add_action_or_reset(dev, __drmm_workqueue_release, wq); \ > ret ? ERR_PTR(ret) : wq; \ > - }) : \ > - wq; \ > + }) : ERR_PTR(-ENOMEM); \ > }) > > #endif -- Louis Chauvet, Bootlin Embedded Linux and Kernel engineering https://bootlin.com