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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3436FC46467 for ; Wed, 4 Jan 2023 14:40:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239326AbjADOkR (ORCPT ); Wed, 4 Jan 2023 09:40:17 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59458 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239670AbjADOjk (ORCPT ); Wed, 4 Jan 2023 09:39:40 -0500 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CDE5D6167 for ; Wed, 4 Jan 2023 06:39:30 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 6B2C361748 for ; Wed, 4 Jan 2023 14:39:30 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 750C1C433D2; Wed, 4 Jan 2023 14:39:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1672843169; bh=Yj2Wk5z0dE6ZJivn7If0k4zwYCeJ0FZc4ZmC1XRtV0M=; h=Subject:To:Cc:From:Date:From; b=iOcQ8lfZJVjewSmJEUYMFBwuyqyLIAgIRlWIyTcnCJVl/mT8Yj4S2W294WArfSyvU QdK+HRF4QlkF3rlD9RsOQplz9YVh6gqyF9fFVe79I/5walp0jkK9ZsyGqZm27HDqq9 B2+hop7yJ2OfFdE8peVBhSUWcgVgj73xQYAq4cTE= Subject: FAILED: patch "[PATCH] drm/i915: Never return 0 if not all requests retired" failed to apply to 5.10-stable tree To: janusz.krzysztofik@linux.intel.com, andrzej.hajda@intel.com, rodrigo.vivi@intel.com, tvrtko.ursulin@intel.com Cc: From: Date: Wed, 04 Jan 2023 15:39:15 +0100 Message-ID: <16728431552714@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org The patch below does not apply to the 5.10-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to . Possible dependencies: 35aba5f51a39 ("drm/i915: Never return 0 if not all requests retired") b97060a99b01 ("drm/i915/guc: Update intel_gt_wait_for_idle to work with GuC") f4eb1f3fe946 ("drm/i915/guc: Ensure G2H response has space in buffer") e0717063ccb4 ("drm/i915/guc: Defer context unpin until scheduling is disabled") 3a4cdf1982f0 ("drm/i915/guc: Implement GuC context operations for new inteface") 925dc1cf58ed ("drm/i915/guc: Implement GuC submission tasklet") 27213d79b384 ("drm/i915/guc: Add LRC descriptor context lookup array") 7518d9b67cf5 ("drm/i915/guc: Remove GuC stage descriptor, add LRC descriptor") 56bc88745e73 ("drm/i915/guc: Add new GuC interface defines and structures") 75452167a279 ("drm/i915/guc: Optimize CTB writes and reads") b43b9950486e ("drm/i915/guc: Add stall timer to non blocking CTB send function") 1681924d8bde ("drm/i915/guc: Add non blocking CTB send function") c26e289f1d8d ("drm/i915/guc: Increase size of CTB buffers") 572f2a5cd974 ("drm/i915/guc: Update firmware to v62.0.0") 22916bad07a5 ("drm/i915: Move submission tasklet to i915_sched_engine") d2a31d026492 ("drm/i915: Update i915_scheduler to operate on i915_sched_engine") 71ed60112d5d ("drm/i915: Add kick_backend function to i915_sched_engine") 3f623e06cd56 ("drm/i915: Move engine->schedule to i915_sched_engine") 349a2bc5aae4 ("drm/i915: Move active tracking to i915_sched_engine") c4fd7d8cc3ca ("drm/i915: Reset sched_engine.no_priolist immediately after dequeue") thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From 35aba5f51a39fb95351844ffb14ec02b8970e19f Mon Sep 17 00:00:00 2001 From: Janusz Krzysztofik Date: Mon, 21 Nov 2022 15:56:55 +0100 Subject: [PATCH] drm/i915: Never return 0 if not all requests retired Users of intel_gt_retire_requests_timeout() expect 0 return value on success. However, we have no protection from passing back 0 potentially returned by a call to dma_fence_wait_timeout() when it succedes right after its timeout has expired. Replace 0 with -ETIME before potentially using the timeout value as return code, so -ETIME is returned if there are still some requests not retired after timeout, 0 otherwise. v3: Use conditional expression, more compact but also better reflecting intention standing behind the change. v2: Move the added lines down so flush_submission() is not affected. Fixes: f33a8a51602c ("drm/i915: Merge wait_for_timelines with retire_request") Signed-off-by: Janusz Krzysztofik Reviewed-by: Andrzej Hajda Cc: stable@vger.kernel.org # v5.5+ Signed-off-by: Tvrtko Ursulin Link: https://patchwork.freedesktop.org/patch/msgid/20221121145655.75141-3-janusz.krzysztofik@linux.intel.com (cherry picked from commit f301a29f143760ce8d3d6b6a8436d45d3448cde6) Signed-off-by: Rodrigo Vivi diff --git a/drivers/gpu/drm/i915/gt/intel_gt_requests.c b/drivers/gpu/drm/i915/gt/intel_gt_requests.c index edb881d75630..1dfd01668c79 100644 --- a/drivers/gpu/drm/i915/gt/intel_gt_requests.c +++ b/drivers/gpu/drm/i915/gt/intel_gt_requests.c @@ -199,7 +199,7 @@ out_active: spin_lock(&timelines->lock); if (remaining_timeout) *remaining_timeout = timeout; - return active_count ? timeout : 0; + return active_count ? timeout ?: -ETIME : 0; } static void retire_work_handler(struct work_struct *work)