From patchwork Mon Jul 16 10:47:27 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chris Wilson X-Patchwork-Id: 10526437 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 7D43C600D0 for ; Mon, 16 Jul 2018 10:47:42 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 5D10428999 for ; Mon, 16 Jul 2018 10:47:42 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 50666289A1; Mon, 16 Jul 2018 10:47:42 +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 047AC28999 for ; Mon, 16 Jul 2018 10:47:41 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 922D46E456; Mon, 16 Jul 2018 10:47:40 +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 D7DB36E456 for ; Mon, 16 Jul 2018 10:47:38 +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 12364719-1500050 for multiple; Mon, 16 Jul 2018 11:47:29 +0100 From: Chris Wilson To: intel-gfx@lists.freedesktop.org Date: Mon, 16 Jul 2018 11:47:27 +0100 Message-Id: <20180716104727.2625-1-chris@chris-wilson.co.uk> X-Mailer: git-send-email 2.18.0 Subject: [Intel-gfx] [PATCH] drm/i915/execlists: Always clear preempt status on cancelling all 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 On reset/wedging, we cancel all pending replies from the HW and we also want to cancel an outstanding preemption event. Since we use the same function to cancel the pending replies for reset and for a preemption event, we can simply clear the active tracking for all. v2: Keep execlists_user_end() markup for wedging Signed-off-by: Chris Wilson --- Email woes, so resending so we Tvrtko can ask his questions again. The reason why I didn't use multiple execlists_clear_active() was because there are multiple bits, and will be extended in future, that gcc doesn't optimise well because they are being tweaked inside asm volatile (and so untouched by gcc). Keeping the user_end() is for later, where it means more than just clearing the bit but is acted on for disabling RPS and the like. -Chris --- drivers/gpu/drm/i915/intel_guc_submission.c | 2 -- drivers/gpu/drm/i915/intel_lrc.c | 5 ++--- 2 files changed, 2 insertions(+), 5 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_guc_submission.c b/drivers/gpu/drm/i915/intel_guc_submission.c index cc444dc5f3ad..94d0674ea3c6 100644 --- a/drivers/gpu/drm/i915/intel_guc_submission.c +++ b/drivers/gpu/drm/i915/intel_guc_submission.c @@ -633,8 +633,6 @@ static void complete_preempt_context(struct intel_engine_cs *engine) wait_for_guc_preempt_report(engine); intel_write_status_page(engine, I915_GEM_HWS_PREEMPT_INDEX, 0); - - execlists_clear_active(execlists, EXECLISTS_ACTIVE_PREEMPT); } /** diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c index 6fef9d130d55..1fe5481470c3 100644 --- a/drivers/gpu/drm/i915/intel_lrc.c +++ b/drivers/gpu/drm/i915/intel_lrc.c @@ -563,8 +563,6 @@ static void complete_preempt_context(struct intel_engine_execlists *execlists) __unwind_incomplete_requests(container_of(execlists, struct intel_engine_cs, execlists)); - - execlists_clear_active(execlists, EXECLISTS_ACTIVE_PREEMPT); } static void execlists_dequeue(struct intel_engine_cs *engine) @@ -792,7 +790,7 @@ execlists_cancel_port_requests(struct intel_engine_execlists * const execlists) port++; } - execlists_user_end(execlists); + execlists->active = 0; } static void reset_csb_pointers(struct intel_engine_execlists *execlists) @@ -843,6 +841,7 @@ static void execlists_cancel_requests(struct intel_engine_cs *engine) /* Cancel the requests on the HW and clear the ELSP tracker. */ execlists_cancel_port_requests(execlists); + execlists_user_end(execlists); /* Mark all executing requests as skipped. */ list_for_each_entry(rq, &engine->timeline.requests, link) {