From patchwork Wed Oct 13 20:48:45 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Fernando Ramos X-Patchwork-Id: 12557077 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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id ED75EC433FE for ; Wed, 13 Oct 2021 20:50:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id CEF45611C0 for ; Wed, 13 Oct 2021 20:50:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230515AbhJMUwS (ORCPT ); Wed, 13 Oct 2021 16:52:18 -0400 Received: from new3-smtp.messagingengine.com ([66.111.4.229]:49011 "EHLO new3-smtp.messagingengine.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230246AbhJMUvx (ORCPT ); Wed, 13 Oct 2021 16:51:53 -0400 Received: from compute5.internal (compute5.nyi.internal [10.202.2.45]) by mailnew.nyi.internal (Postfix) with ESMTP id 6382758117B; Wed, 13 Oct 2021 16:49:49 -0400 (EDT) Received: from mailfrontend2 ([10.202.2.163]) by compute5.internal (MEProxy); Wed, 13 Oct 2021 16:49:49 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=u92.eu; h=from :to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; s=fm3; bh=u+zwLxcZ69Jq4 9MVAvz8TDTzcn5nvEKAlwdjPR/i2e4=; b=NEaScgCU7wtbl3SvTcTTAEV+p1JSn QrrVT4PYz67sYKP2gprqQCm3+w5crktcGclNsCsAzB4Z/lEfndarbEIu0RAEF0D1 qTFTwKV4OKiso+C1NJThfALD7i/EWKgDHHfcNMUNmmcDob/fKaHwcRdD8iCo+PEN GbsPfJFfgDCR04Fcam8IQTRFeZnxuN6L3mvDzLAOOipYElByTp++8uYrejyAJfmS Ce/w9zMFUkke94FOB5STrrkl7yDcXRWy64qpQizF83EIbcwCLpwh/ATKEqpDHRGi emPZShksi6/vt/vTG3x8ByplA7Nu8edjbwtWbxJxBfzRX9ECzioZF4ejw== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:content-transfer-encoding:date:from :in-reply-to:message-id:mime-version:references:subject:to :x-me-proxy:x-me-proxy:x-me-sender:x-me-sender:x-sasl-enc; s= fm1; bh=u+zwLxcZ69Jq49MVAvz8TDTzcn5nvEKAlwdjPR/i2e4=; b=JeeT7BKE X3uiLZhmU9SUoAO/f2UatIX3fQPg3pR3/vJSzqE2XOWEnJc6qVL7f3/4XETfAxkx jrEJGPJY+OYf5mPzx9HqFd55VsdtOwAZ6PnXM0OQm4ne/NRaLmEw/PBMNMfMC/ag SlMAzq8cNemoHIaoQe94TO599XwWrEmyejuejMkLmHL73CIGfRoECjTvag/oqTCL /R4yWoSZZdjlgnEh343aSUy4CnUCVNLxi6XxYef1VhayM8sLwNvvYv1EHd6J4h5s ZbchtvJeQDuCH8p7NagSq1Hul2IA0+fuN8k/y1XCgujVzeqfn5BaKNWJsi0eSjzC VohtOeMMQFn44g== X-ME-Sender: X-ME-Received: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgedvtddrvddutddgudehudcutefuodetggdotefrod ftvfcurfhrohhfihhlvgemucfhrghsthforghilhdpqfgfvfdpuffrtefokffrpgfnqfgh necuuegrihhlohhuthemuceftddtnecunecujfgurhephffvufffkffojghfggfgsedtke ertdertddtnecuhfhrohhmpefhvghrnhgrnhguohcutfgrmhhoshcuoehgrhgvvghnfhho ohesuhelvddrvghuqeenucggtffrrghtthgvrhhnpeekleekjedtheejheekfefggeevvd fgueegffeuveduhfehueegkeeijedvvdejfeenucevlhhushhtvghrufhiiigvpeegnecu rfgrrhgrmhepmhgrihhlfhhrohhmpehgrhgvvghnfhhoohesuhelvddrvghu X-ME-Proxy: Received: by mail.messagingengine.com (Postfix) with ESMTPA; Wed, 13 Oct 2021 16:49:46 -0400 (EDT) From: Fernando Ramos To: dri-devel@lists.freedesktop.org Cc: linux-kernel@vger.kernel.org, sean@poorly.run, linux-doc@vger.kernel.org, amd-gfx@lists.freedesktop.org, intel-gfx@lists.freedesktop.org, linux-arm-msm@vger.kernel.org, freedreno@lists.freedesktop.org, nouveau@lists.freedesktop.org, linux-renesas-soc@vger.kernel.org, linux-tegra@vger.kernel.org Subject: [PATCH v4 19/20] drm: cleanup: remove drm_modeset_(un)lock_all() Date: Wed, 13 Oct 2021 22:48:45 +0200 Message-Id: <20211013204846.90026-20-greenfoo@u92.eu> X-Mailer: git-send-email 2.33.0 In-Reply-To: <20211013204846.90026-1-greenfoo@u92.eu> References: <20211013204846.90026-1-greenfoo@u92.eu> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Functions drm_modeset_lock_all() and drm_modeset_unlock_all() are no longer used anywhere and can be removed. Signed-off-by: Fernando Ramos --- drivers/gpu/drm/drm_modeset_lock.c | 94 +----------------------------- include/drm/drm_modeset_lock.h | 2 - 2 files changed, 3 insertions(+), 93 deletions(-) diff --git a/drivers/gpu/drm/drm_modeset_lock.c b/drivers/gpu/drm/drm_modeset_lock.c index 4d32b61fa1fd..b2b84ca2b738 100644 --- a/drivers/gpu/drm/drm_modeset_lock.c +++ b/drivers/gpu/drm/drm_modeset_lock.c @@ -117,93 +117,6 @@ static void __stack_depot_print(depot_stack_handle_t stack_depot) } #endif /* CONFIG_DRM_DEBUG_MODESET_LOCK */ -/** - * drm_modeset_lock_all - take all modeset locks - * @dev: DRM device - * - * This function takes all modeset locks, suitable where a more fine-grained - * scheme isn't (yet) implemented. Locks must be dropped by calling the - * drm_modeset_unlock_all() function. - * - * This function is deprecated. It allocates a lock acquisition context and - * stores it in &drm_device.mode_config. This facilitate conversion of - * existing code because it removes the need to manually deal with the - * acquisition context, but it is also brittle because the context is global - * and care must be taken not to nest calls. New code should use the - * drm_modeset_lock_all_ctx() function and pass in the context explicitly. - */ -void drm_modeset_lock_all(struct drm_device *dev) -{ - struct drm_mode_config *config = &dev->mode_config; - struct drm_modeset_acquire_ctx *ctx; - int ret; - - ctx = kzalloc(sizeof(*ctx), GFP_KERNEL | __GFP_NOFAIL); - if (WARN_ON(!ctx)) - return; - - mutex_lock(&config->mutex); - - drm_modeset_acquire_init(ctx, 0); - -retry: - ret = drm_modeset_lock_all_ctx(dev, ctx); - if (ret < 0) { - if (ret == -EDEADLK) { - drm_modeset_backoff(ctx); - goto retry; - } - - drm_modeset_acquire_fini(ctx); - kfree(ctx); - return; - } - ww_acquire_done(&ctx->ww_ctx); - - WARN_ON(config->acquire_ctx); - - /* - * We hold the locks now, so it is safe to stash the acquisition - * context for drm_modeset_unlock_all(). - */ - config->acquire_ctx = ctx; - - drm_warn_on_modeset_not_all_locked(dev); -} -EXPORT_SYMBOL(drm_modeset_lock_all); - -/** - * drm_modeset_unlock_all - drop all modeset locks - * @dev: DRM device - * - * This function drops all modeset locks taken by a previous call to the - * drm_modeset_lock_all() function. - * - * This function is deprecated. It uses the lock acquisition context stored - * in &drm_device.mode_config. This facilitates conversion of existing - * code because it removes the need to manually deal with the acquisition - * context, but it is also brittle because the context is global and care must - * be taken not to nest calls. New code should pass the acquisition context - * directly to the drm_modeset_drop_locks() function. - */ -void drm_modeset_unlock_all(struct drm_device *dev) -{ - struct drm_mode_config *config = &dev->mode_config; - struct drm_modeset_acquire_ctx *ctx = config->acquire_ctx; - - if (WARN_ON(!ctx)) - return; - - config->acquire_ctx = NULL; - drm_modeset_drop_locks(ctx); - drm_modeset_acquire_fini(ctx); - - kfree(ctx); - - mutex_unlock(&dev->mode_config.mutex); -} -EXPORT_SYMBOL(drm_modeset_unlock_all); - /** * drm_warn_on_modeset_not_all_locked - check that all modeset locks are locked * @dev: device @@ -425,10 +338,9 @@ EXPORT_SYMBOL(drm_modeset_unlock); * This function takes all modeset locks, suitable where a more fine-grained * scheme isn't (yet) implemented. * - * Unlike drm_modeset_lock_all(), it doesn't take the &drm_mode_config.mutex - * since that lock isn't required for modeset state changes. Callers which - * need to grab that lock too need to do so outside of the acquire context - * @ctx. + * It doesn't take the &drm_mode_config.mutex since that lock isn't required for + * modeset state changes. Callers which need to grab that lock too need to do so + * outside of the acquire context @ctx. * * Locks acquired with this function should be released by calling the * drm_modeset_drop_locks() function on @ctx. diff --git a/include/drm/drm_modeset_lock.h b/include/drm/drm_modeset_lock.h index b84693fbd2b5..96b853530120 100644 --- a/include/drm/drm_modeset_lock.h +++ b/include/drm/drm_modeset_lock.h @@ -140,8 +140,6 @@ struct drm_device; struct drm_crtc; struct drm_plane; -void drm_modeset_lock_all(struct drm_device *dev); -void drm_modeset_unlock_all(struct drm_device *dev); void drm_warn_on_modeset_not_all_locked(struct drm_device *dev); int drm_modeset_lock_all_ctx(struct drm_device *dev,