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 4409BCD37AC for ; Wed, 13 May 2026 16:59:07 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 2237010EF7D; Wed, 13 May 2026 16:59:05 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=collabora.com header.i=@collabora.com header.b="iz7J+lbh"; dkim-atps=neutral Received: from bali.collaboradmins.com (bali.collaboradmins.com [148.251.105.195]) by gabe.freedesktop.org (Postfix) with ESMTPS id 4933410EF7D for ; Wed, 13 May 2026 16:59:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1778691542; bh=AAqKJoPOOkLMripnuQaHw9xbx35RrEUMeTSdxMx4p6s=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=iz7J+lbh0ukvjOToMFhD5Zp8Se4seX2ihx25f/7zzFUb0I7hTL8179T8uCclw+FSw 1MRunWebsti7/QI1M/oKi7k3n2cTIo/Mb1LtRxiV4099JPsz8qbhZdDKsYSoFqDtb7 B9hN248Y6p+ePLN9GNKED/cXdduVAQb0q485ypZmmKxANrbTGBD+4eqCZqGY2YfkrJ z12Go3GpLzOD3CKfNRrw5ud+cAnuQtUyDNaqNblSrYjK6NyUdkKn4ADkxANeNdT6ro CAszu8lPyEaUkjJW2sFw01FhuRYrqlWH83unEuhlFyH8Q9mKVU6axEOViIayI0oDAB A685TKVXB1fTQ== Received: from [192.168.1.38] (unknown [100.64.0.11]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: bbrezillon) by bali.collaboradmins.com (Postfix) with ESMTPSA id 86F8B17E1584; Wed, 13 May 2026 18:59:01 +0200 (CEST) From: Boris Brezillon Date: Wed, 13 May 2026 18:58:51 +0200 Subject: [PATCH 3/6] drm: Define a conditional guard for drm_dev_{enter,exit}() MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20260513-panthor-guard-refactor-v1-3-f2d8c15a97ce@collabora.com> References: <20260513-panthor-guard-refactor-v1-0-f2d8c15a97ce@collabora.com> In-Reply-To: <20260513-panthor-guard-refactor-v1-0-f2d8c15a97ce@collabora.com> To: Steven Price , Liviu Dudau Cc: Sumit Semwal , =?utf-8?q?Christian_K=C3=B6nig?= , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , linux-media@vger.kernel.org, dri-devel@lists.freedesktop.org, linaro-mm-sig@lists.linaro.org, linux-kernel@vger.kernel.org, Boris Brezillon X-Mailer: b4 0.14.3 X-Developer-Signature: v=1; a=ed25519-sha256; t=1778691539; l=1053; i=boris.brezillon@collabora.com; s=20260429; h=from:subject:message-id; bh=AAqKJoPOOkLMripnuQaHw9xbx35RrEUMeTSdxMx4p6s=; b=FYRu54IWmcIrt4VqItE/N6hDpklTqfnMHVMRaefA+rhpji77Nnesrd2OBc/n1HO3aQJVUjjtc z7TIGQgNP8uDMCgjQngOurcrLUVY/qExit+MP4PzEpPLSs8Pva8lVXu X-Developer-Key: i=boris.brezillon@collabora.com; a=ed25519; pk=eN+ORdOgQY7d5U+0kA8h5bf67XdD8bhKbjD/TCHexSY= 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" Define a conditional drm_dev_access guard to automate the drm_dev_{enter,exit}() sequence. Signed-off-by: Boris Brezillon --- include/drm/drm_drv.h | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/include/drm/drm_drv.h b/include/drm/drm_drv.h index 42fc085f986d..79d1958f93e4 100644 --- a/include/drm/drm_drv.h +++ b/include/drm/drm_drv.h @@ -490,6 +490,15 @@ void drm_dev_unplug(struct drm_device *dev); int drm_dev_wedged_event(struct drm_device *dev, unsigned long method, struct drm_wedge_task_info *info); +/* + * Only the conditional drm_dev_access guard is valid. The drm_dev one is + * here so we can extend it with a conditional variant. + */ +DEFINE_LOCK_GUARD_1(drm_dev, struct drm_device, + { WARN_ON("Use cond guards"); _T->idx = -1; }, + drm_dev_exit(_T->idx), int idx); +DEFINE_LOCK_GUARD_1_COND(drm_dev, _access, drm_dev_enter(_T->lock, &_T->idx)); + /** * drm_dev_is_unplugged - is a DRM device unplugged * @dev: DRM device -- 2.54.0