From patchwork Sat Aug 10 15:34:27 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chris Wilson X-Patchwork-Id: 11088579 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 D5F1514D5 for ; Sat, 10 Aug 2019 15:36:21 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id C482B2228E for ; Sat, 10 Aug 2019 15:36:21 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id B863026E1A; Sat, 10 Aug 2019 15:36:21 +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 70D202228E for ; Sat, 10 Aug 2019 15:36:21 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id BD8F96E42B; Sat, 10 Aug 2019 15:36:14 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from fireflyinternet.com (mail.fireflyinternet.com [109.228.58.192]) by gabe.freedesktop.org (Postfix) with ESMTPS id 61DCB6E435; Sat, 10 Aug 2019 15:36:13 +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 17954016-1500050 for multiple; Sat, 10 Aug 2019 16:34:32 +0100 From: Chris Wilson To: dri-devel@lists.freedesktop.org Subject: [PATCH 1/4] dma-fence: Propagate errors to dma-fence-array container Date: Sat, 10 Aug 2019 16:34:27 +0100 Message-Id: <20190810153430.30636-1-chris@chris-wilson.co.uk> X-Mailer: git-send-email 2.23.0.rc1 MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Gustavo Padovan , intel-gfx@lists.freedesktop.org, christian.koenig@amd.com Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" X-Virus-Scanned: ClamAV using ClamSMTP When one of the array of fences is signaled, propagate its errors to the parent fence-array (keeping the first error to be raised). v2: Opencode cmpxchg_local to avoid compiler freakout. Signed-off-by: Chris Wilson Cc: Sumit Semwal Cc: Gustavo Padovan --- drivers/dma-buf/dma-fence-array.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/drivers/dma-buf/dma-fence-array.c b/drivers/dma-buf/dma-fence-array.c index 12c6f64c0bc2..d90675bb4fcc 100644 --- a/drivers/dma-buf/dma-fence-array.c +++ b/drivers/dma-buf/dma-fence-array.c @@ -13,6 +13,12 @@ #include #include +static void fence_set_error_once(struct dma_fence *fence, int error) +{ + if (!fence->error && error) + dma_fence_set_error(fence, error); +} + static const char *dma_fence_array_get_driver_name(struct dma_fence *fence) { return "dma_fence_array"; @@ -38,6 +44,13 @@ static void dma_fence_array_cb_func(struct dma_fence *f, container_of(cb, struct dma_fence_array_cb, cb); struct dma_fence_array *array = array_cb->array; + /* + * Propagate the first error reported by any of our fences, but only + * before we ourselves are signaled. + */ + if (atomic_read(&array->num_pending) > 0) + fence_set_error_once(&array->base, f->error); + if (atomic_dec_and_test(&array->num_pending)) irq_work_queue(&array->work); else @@ -63,6 +76,8 @@ static bool dma_fence_array_enable_signaling(struct dma_fence *fence) dma_fence_get(&array->base); if (dma_fence_add_callback(array->fences[i], &cb[i].cb, dma_fence_array_cb_func)) { + fence_set_error_once(&array->base, + array->fences[i]->error); dma_fence_put(&array->base); if (atomic_dec_and_test(&array->num_pending)) return false;