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 D559FC433F5 for ; Mon, 2 May 2022 14:26:10 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id F1E1210ECA6; Mon, 2 May 2022 14:26:09 +0000 (UTC) Received: from smtp-out1.suse.de (smtp-out1.suse.de [195.135.220.28]) by gabe.freedesktop.org (Postfix) with ESMTPS id 35BD310EBD3 for ; Mon, 2 May 2022 14:26:08 +0000 (UTC) Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by smtp-out1.suse.de (Postfix) with ESMTPS id B137C210EE; Mon, 2 May 2022 14:25:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1651501528; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=+2ED1eATtmVmsRI7X1td6FP/tXFWey4l7ybes0CKHPQ=; b=aKcGD2FdXC21A3cJduens8q7pTnm7IPiUmKDhdJEHNXX7DiPQq9BfFA0JscCdtf+BdYUJ0 ETSBlqUKMdw8gToj9LzplaFHdD/LlRsM7z/4qe6oj4HiQc1b9ygZ3p0+Jxs0uWjYQNd9A8 ws90oiW0Fv79/mLj/koHsFwVwgz2o5w= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1651501528; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=+2ED1eATtmVmsRI7X1td6FP/tXFWey4l7ybes0CKHPQ=; b=xgz0o7XCJb+2fNs9GP3kAifSMOwQX0kXdK1ClmyFMfyXxR4sHKDMFuBWQkSRQUEQSkIWhl bZfEvIdmxxs08oAw== Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by imap2.suse-dmz.suse.de (Postfix) with ESMTPS id 8E91513B0C; Mon, 2 May 2022 14:25:28 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id GDkPItjpb2J4MgAAMHmgww (envelope-from ); Mon, 02 May 2022 14:25:28 +0000 From: Thomas Zimmermann To: airlied@redhat.com, airlied@linux.ie, daniel@ffwll.ch, maarten.lankhorst@linux.intel.com, mripard@kernel.org Subject: [PATCH 1/3] drm: Add DRM-managed mutex_init() Date: Mon, 2 May 2022 16:25:12 +0200 Message-Id: <20220502142514.2174-2-tzimmermann@suse.de> X-Mailer: git-send-email 2.36.0 In-Reply-To: <20220502142514.2174-1-tzimmermann@suse.de> References: <20220502142514.2174-1-tzimmermann@suse.de> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 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: , Cc: Thomas Zimmermann , dri-devel@lists.freedesktop.org Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Add drmm_mutex_init(), a helper that provides managed mutex cleanup. The mutex will be destroyed with the final reference of the DRM device. Signed-off-by: Thomas Zimmermann --- drivers/gpu/drm/drm_managed.c | 27 +++++++++++++++++++++++++++ include/drm/drm_managed.h | 3 +++ 2 files changed, 30 insertions(+) diff --git a/drivers/gpu/drm/drm_managed.c b/drivers/gpu/drm/drm_managed.c index 37d7db6223be6..4cf214de50c40 100644 --- a/drivers/gpu/drm/drm_managed.c +++ b/drivers/gpu/drm/drm_managed.c @@ -8,6 +8,7 @@ #include #include +#include #include #include @@ -262,3 +263,29 @@ void drmm_kfree(struct drm_device *dev, void *data) free_dr(dr_match); } EXPORT_SYMBOL(drmm_kfree); + +static void drmm_mutex_release(struct drm_device *dev, void *res) +{ + struct mutex *lock = res; + + mutex_destroy(lock); +} + +/** + * drmm_mutex_init - &drm_device-managed mutex_init() + * @dev: DRM device + * @lock: lock to be initialized + * + * Returns: + * 0 on success, or a negative errno code otherwise. + * + * This is a &drm_device-managed version of mutex_init(). The initialized + * lock is automatically destroyed on the final drm_dev_put(). + */ +int drmm_mutex_init(struct drm_device *dev, struct mutex *lock) +{ + mutex_init(lock); + + return drmm_add_action_or_reset(dev, drmm_mutex_release, lock); +} +EXPORT_SYMBOL(drmm_mutex_init); diff --git a/include/drm/drm_managed.h b/include/drm/drm_managed.h index b45c6fbf53ac4..359883942612e 100644 --- a/include/drm/drm_managed.h +++ b/include/drm/drm_managed.h @@ -8,6 +8,7 @@ #include struct drm_device; +struct mutex; typedef void (*drmres_release_t)(struct drm_device *dev, void *res); @@ -104,4 +105,6 @@ char *drmm_kstrdup(struct drm_device *dev, const char *s, gfp_t gfp); void drmm_kfree(struct drm_device *dev, void *data); +int drmm_mutex_init(struct drm_device *dev, struct mutex *lock); + #endif -- 2.36.0