From patchwork Mon Jul 23 14:53:35 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chris Wilson X-Patchwork-Id: 10540435 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 2C1141805 for ; Mon, 23 Jul 2018 14:53:47 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 1BDF928C33 for ; Mon, 23 Jul 2018 14:53:47 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 102E228C6E; Mon, 23 Jul 2018 14:53:47 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id CBB8D28C33 for ; Mon, 23 Jul 2018 14:53:46 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 4D37D6E017; Mon, 23 Jul 2018 14:53:46 +0000 (UTC) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from fireflyinternet.com (mail.fireflyinternet.com [109.228.58.192]) by gabe.freedesktop.org (Postfix) with ESMTPS id E76596E017 for ; Mon, 23 Jul 2018 14:53:44 +0000 (UTC) X-Default-Received-SPF: pass (skip=forwardok (res=PASS)) x-ip-name=78.156.65.138; Received: from haswell.alporthouse.com (unverified [78.156.65.138]) by fireflyinternet.com (Firefly Internet (M1)) with ESMTP id 12436732-1500050 for multiple; Mon, 23 Jul 2018 15:53:38 +0100 From: Chris Wilson To: intel-gfx@lists.freedesktop.org Date: Mon, 23 Jul 2018 15:53:35 +0100 Message-Id: <20180723145335.24579-1-chris@chris-wilson.co.uk> X-Mailer: git-send-email 2.18.0 Subject: [Intel-gfx] [PATCH] drm/i915: Skip repeated calls to i915_gem_set_wedged() X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" X-Virus-Scanned: ClamAV using ClamSMTP If we already wedged, i915_gem_set_wedged() becomes a complicated no-op. References: https://bugs.freedesktop.org/show_bug.cgi?id=107343 Signed-off-by: Chris Wilson Reviewed-by: Rodrigo Vivi --- drivers/gpu/drm/i915/i915_gem.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c index 8b52cb768a67..a4031fab57b0 100644 --- a/drivers/gpu/drm/i915/i915_gem.c +++ b/drivers/gpu/drm/i915/i915_gem.c @@ -3312,8 +3312,8 @@ void i915_gem_set_wedged(struct drm_i915_private *i915) intel_engine_dump(engine, &p, "%s\n", engine->name); } - set_bit(I915_WEDGED, &i915->gpu_error.flags); - smp_mb__after_atomic(); + if (test_and_set_bit(I915_WEDGED, &i915->gpu_error.flags)) + goto out; /* * First, stop submission to hw, but do not yet complete requests by @@ -3372,6 +3372,7 @@ void i915_gem_set_wedged(struct drm_i915_private *i915) i915_gem_reset_finish_engine(engine); } +out: GEM_TRACE("end\n"); wake_up_all(&i915->gpu_error.reset_queue);