From patchwork Fri Nov 27 12:05:06 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Matthew Auld X-Patchwork-Id: 11935665 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5312EC64E75 for ; Fri, 27 Nov 2020 12:09:51 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 035FF2223D for ; Fri, 27 Nov 2020 12:09:50 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 035FF2223D Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 230076EC61; Fri, 27 Nov 2020 12:08:58 +0000 (UTC) Received: from mga11.intel.com (mga11.intel.com [192.55.52.93]) by gabe.freedesktop.org (Postfix) with ESMTPS id 610EF6EC29; Fri, 27 Nov 2020 12:08:24 +0000 (UTC) IronPort-SDR: owtmKndv1geWy3V66HLae2c7vXC3Kbg3Jgq/oaXi2hxDsUhyLSR7oA+2imM8j9VCH5iCZFvE4J +g8Ou2WE2cNg== X-IronPort-AV: E=McAfee;i="6000,8403,9817"; a="168883433" X-IronPort-AV: E=Sophos;i="5.78,374,1599548400"; d="scan'208";a="168883433" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga005.jf.intel.com ([10.7.209.41]) by fmsmga102.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 27 Nov 2020 04:08:21 -0800 IronPort-SDR: RWtMjk+F4btUkAY+O5zwMgf519sYcF4/YjgFHBuD/jhYrAGr8ka+asWKyGaeuLG0Qi+3uYfDoQ FfeJmuSjBxXQ== X-IronPort-AV: E=Sophos;i="5.78,374,1599548400"; d="scan'208";a="548028700" Received: from mjgleeso-mobl.ger.corp.intel.com (HELO mwauld-desk1.ger.corp.intel.com) ([10.251.85.2]) by orsmga005-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 27 Nov 2020 04:08:20 -0800 From: Matthew Auld To: intel-gfx@lists.freedesktop.org Subject: [RFC PATCH 030/162] drm/i915: Rework clflush to work correctly without obj->mm.lock. Date: Fri, 27 Nov 2020 12:05:06 +0000 Message-Id: <20201127120718.454037-31-matthew.auld@intel.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20201127120718.454037-1-matthew.auld@intel.com> References: <20201127120718.454037-1-matthew.auld@intel.com> MIME-Version: 1.0 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: dri-devel@lists.freedesktop.org, =?utf-8?q?Thomas_Hellstr=C3=B6m?= Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" From: Maarten Lankhorst Pin in the caller, not in the work itself. This should also work better for dma-fence annotations. Signed-off-by: Maarten Lankhorst Cc: Thomas Hellström --- drivers/gpu/drm/i915/gem/i915_gem_clflush.c | 15 +++++++-------- 1 file changed, 7 insertions(+), 8 deletions(-) diff --git a/drivers/gpu/drm/i915/gem/i915_gem_clflush.c b/drivers/gpu/drm/i915/gem/i915_gem_clflush.c index bc0223716906..daf9284ef1f5 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_clflush.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_clflush.c @@ -27,15 +27,8 @@ static void __do_clflush(struct drm_i915_gem_object *obj) static int clflush_work(struct dma_fence_work *base) { struct clflush *clflush = container_of(base, typeof(*clflush), base); - struct drm_i915_gem_object *obj = clflush->obj; - int err; - err = i915_gem_object_pin_pages(obj); - if (err) - return err; - - __do_clflush(obj); - i915_gem_object_unpin_pages(obj); + __do_clflush(clflush->obj); return 0; } @@ -44,6 +37,7 @@ static void clflush_release(struct dma_fence_work *base) { struct clflush *clflush = container_of(base, typeof(*clflush), base); + i915_gem_object_unpin_pages(clflush->obj); i915_gem_object_put(clflush->obj); } @@ -63,6 +57,11 @@ static struct clflush *clflush_work_create(struct drm_i915_gem_object *obj) if (!clflush) return NULL; + if (__i915_gem_object_get_pages(obj) < 0) { + kfree(clflush); + return NULL; + } + dma_fence_work_init(&clflush->base, &clflush_ops); clflush->obj = i915_gem_object_get(obj); /* obj <-> clflush cycle */