From patchwork Mon Jan 15 21:24:54 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chris Wilson X-Patchwork-Id: 10165387 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id C69FF60245 for ; Mon, 15 Jan 2018 21:25:30 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id B9309209CE for ; Mon, 15 Jan 2018 21:25:30 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id AE101268AE; Mon, 15 Jan 2018 21:25:30 +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=-4.2 required=2.0 tests=BAYES_00, 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 6B284209CE for ; Mon, 15 Jan 2018 21:25:30 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id A56BC6E16D; Mon, 15 Jan 2018 21:25:29 +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 5201C6E166 for ; Mon, 15 Jan 2018 21:25:25 +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 10328383-1500050 for multiple; Mon, 15 Jan 2018 21:25:14 +0000 Received: by haswell.alporthouse.com (sSMTP sendmail emulation); Mon, 15 Jan 2018 21:25:16 +0000 From: Chris Wilson To: intel-gfx@lists.freedesktop.org Date: Mon, 15 Jan 2018 21:24:54 +0000 Message-Id: <20180115212455.24046-10-chris@chris-wilson.co.uk> X-Mailer: git-send-email 2.15.1 In-Reply-To: <20180115212455.24046-1-chris@chris-wilson.co.uk> References: <20180115212455.24046-1-chris@chris-wilson.co.uk> X-Originating-IP: 78.156.65.138 X-Country: code=GB country="United Kingdom" ip=78.156.65.138 Subject: [Intel-gfx] [PATCH 09/10] drm/i915: Only signal from interrupt when requested X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.18 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 Avoid calling dma_fence_signal() from inside the interrupt if we haven't enabled signaling on the request. Signed-off-by: Chris Wilson --- drivers/gpu/drm/i915/i915_gem_request.c | 2 +- drivers/gpu/drm/i915/i915_irq.c | 3 ++- drivers/gpu/drm/i915/intel_ringbuffer.h | 5 ++--- 3 files changed, 5 insertions(+), 5 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_gem_request.c b/drivers/gpu/drm/i915/i915_gem_request.c index 08bbd56277e5..46848aef1648 100644 --- a/drivers/gpu/drm/i915/i915_gem_request.c +++ b/drivers/gpu/drm/i915/i915_gem_request.c @@ -1214,7 +1214,7 @@ long i915_wait_request(struct drm_i915_gem_request *req, if (flags & I915_WAIT_LOCKED) add_wait_queue(errq, &reset); - intel_wait_init(&wait, req); + intel_wait_init(&wait); restart: do { diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c index e5f76d580010..ea290f102784 100644 --- a/drivers/gpu/drm/i915/i915_irq.c +++ b/drivers/gpu/drm/i915/i915_irq.c @@ -1093,7 +1093,8 @@ static void notify_ring(struct intel_engine_cs *engine) if (i915_seqno_passed(seqno, wait->seqno)) { struct drm_i915_gem_request *waiter = wait->request; - if (!test_bit(DMA_FENCE_FLAG_SIGNALED_BIT, + if (waiter && + !test_bit(DMA_FENCE_FLAG_SIGNALED_BIT, &waiter->fence.flags) && intel_wait_check_request(wait, waiter)) rq = i915_gem_request_get(waiter); diff --git a/drivers/gpu/drm/i915/intel_ringbuffer.h b/drivers/gpu/drm/i915/intel_ringbuffer.h index f406d0ff4612..cea2092d25d9 100644 --- a/drivers/gpu/drm/i915/intel_ringbuffer.h +++ b/drivers/gpu/drm/i915/intel_ringbuffer.h @@ -874,11 +874,10 @@ static inline u32 intel_hws_preempt_done_address(struct intel_engine_cs *engine) /* intel_breadcrumbs.c -- user interrupt bottom-half for waiters */ int intel_engine_init_breadcrumbs(struct intel_engine_cs *engine); -static inline void intel_wait_init(struct intel_wait *wait, - struct drm_i915_gem_request *rq) +static inline void intel_wait_init(struct intel_wait *wait) { wait->tsk = current; - wait->request = rq; + wait->request = NULL; } static inline void intel_wait_init_for_seqno(struct intel_wait *wait, u32 seqno)