From patchwork Thu Jul 20 00:14:29 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Danilo Krummrich X-Patchwork-Id: 13319643 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 gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id D27F5C001DF for ; Thu, 20 Jul 2023 00:15:46 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id AAE1910E545; Thu, 20 Jul 2023 00:15:45 +0000 (UTC) Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) by gabe.freedesktop.org (Postfix) with ESMTPS id DB69210E53E for ; Thu, 20 Jul 2023 00:15:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1689812133; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=/pp7pCNssCFdX07s9SqyoLBjaIvnkOQtt7NO/vv36Sc=; b=Qh69X4OpAgZ9AcEC6nKNgUaaQf8n3qS5D9M8xfdhHi3LsV6UF7Qxd6qarsa8UwIOpAhcDN jDzQToGCtIX92MwB8GMZkAOqul5ruOjfBqlTXEGmUp3FpD9mwxoBiu24ro/8rfPr2Z5gES 4mOh9NKBe9o517/HNfiZ7Elzxb9SAIE= Received: from mail-ed1-f71.google.com (mail-ed1-f71.google.com [209.85.208.71]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-573-eA4p-gwOMom27vT_btegqg-1; Wed, 19 Jul 2023 20:15:31 -0400 X-MC-Unique: eA4p-gwOMom27vT_btegqg-1 Received: by mail-ed1-f71.google.com with SMTP id 4fb4d7f45d1cf-51da39aa6dcso84969a12.2 for ; Wed, 19 Jul 2023 17:15:31 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1689812130; x=1692404130; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=/pp7pCNssCFdX07s9SqyoLBjaIvnkOQtt7NO/vv36Sc=; b=OB8fQlCpHbsskmkBWCh83YKuPnzDXd8UbsbXJcfk0p+Gy3uh+kI371/Cq31b6rF65h 8GHPYHCONchOPu0DwVdBvfWOvoo1xJ1CByfoZCLUxF6RxjywKQK1mqfPkBTDUYy/KS5W 9WQkwUnxUI6usfAH76ntMxJe1xTE70aPhFq4ANxGeCRYnWEfM2W95MqsDnLzgHKEIoaI cnClx8CKcI7mv/S566FGrLgGybF1/kyiW592sgSD8hE+cyy9YYAgjLH98WGWKMsjvXc+ UhsEbb24uApF6SD3ufao4+tI6iCfr3d07aJ/guBXuIi7JWSFEBTnBKSuYCMd8F6vJ6/N eG2w== X-Gm-Message-State: ABy/qLbt1gikUbcXD5Rr6W/9B/hIQ+KhznUlLMUdsqZEnfA9PTaKrgof z8q4RbunIhlB+8JQKbahTlDCbRkaLJse5MuXWlllnt8mS342JJya1uqVSk3zayBO89gtsGW1aYA J0L8DJfs8ZOCs+3w9fEyHkagQ2m1L X-Received: by 2002:aa7:df82:0:b0:51e:5686:d0f8 with SMTP id b2-20020aa7df82000000b0051e5686d0f8mr3267115edy.10.1689812130840; Wed, 19 Jul 2023 17:15:30 -0700 (PDT) X-Google-Smtp-Source: APBJJlEY0jNJR563RWawHMsZiYL8i7vVzYGf6EAZKyG8JAuq4b4CkUSHn2cXQQXFqqniM+7z3huhmQ== X-Received: by 2002:aa7:df82:0:b0:51e:5686:d0f8 with SMTP id b2-20020aa7df82000000b0051e5686d0f8mr3267108edy.10.1689812130666; Wed, 19 Jul 2023 17:15:30 -0700 (PDT) Received: from cassiopeiae.. ([2a02:810d:4b3f:de9c:642:1aff:fe31:a19f]) by smtp.gmail.com with ESMTPSA id f24-20020a056402005800b0051dd4daf13fsm3401489edu.30.2023.07.19.17.15.29 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 19 Jul 2023 17:15:30 -0700 (PDT) From: Danilo Krummrich To: airlied@gmail.com, daniel@ffwll.ch, tzimmermann@suse.de, mripard@kernel.org, corbet@lwn.net, christian.koenig@amd.com, bskeggs@redhat.com, Liam.Howlett@oracle.com, matthew.brost@intel.com, boris.brezillon@collabora.com, alexdeucher@gmail.com, ogabbay@kernel.org, bagasdotme@gmail.com, willy@infradead.org, jason@jlekstrand.net, donald.robson@imgtec.com Subject: [PATCH drm-misc-next v8 08/12] drm/nouveau: fence: fail to emit when fence context is killed Date: Thu, 20 Jul 2023 02:14:29 +0200 Message-ID: <20230720001443.2380-9-dakr@redhat.com> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230720001443.2380-1-dakr@redhat.com> References: <20230720001443.2380-1-dakr@redhat.com> MIME-Version: 1.0 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: nouveau@lists.freedesktop.org, Danilo Krummrich , linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-doc@vger.kernel.org Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" The new VM_BIND UAPI implementation introduced in subsequent commits will allow asynchronous jobs processing push buffers and emitting fences. If a fence context is killed, e.g. due to a channel fault, jobs which are already queued for execution might still emit new fences. In such a case a job would hang forever. To fix that, fail to emit a new fence on a killed fence context with -ENODEV to unblock the job. Signed-off-by: Danilo Krummrich --- drivers/gpu/drm/nouveau/nouveau_fence.c | 7 +++++++ drivers/gpu/drm/nouveau/nouveau_fence.h | 2 +- 2 files changed, 8 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/nouveau/nouveau_fence.c b/drivers/gpu/drm/nouveau/nouveau_fence.c index e946408f945b..77c739a55b19 100644 --- a/drivers/gpu/drm/nouveau/nouveau_fence.c +++ b/drivers/gpu/drm/nouveau/nouveau_fence.c @@ -96,6 +96,7 @@ nouveau_fence_context_kill(struct nouveau_fence_chan *fctx, int error) if (nouveau_fence_signal(fence)) nvif_event_block(&fctx->event); } + fctx->killed = 1; spin_unlock_irqrestore(&fctx->lock, flags); } @@ -229,6 +230,12 @@ nouveau_fence_emit(struct nouveau_fence *fence, struct nouveau_channel *chan) dma_fence_get(&fence->base); spin_lock_irq(&fctx->lock); + if (unlikely(fctx->killed)) { + spin_unlock_irq(&fctx->lock); + dma_fence_put(&fence->base); + return -ENODEV; + } + if (nouveau_fence_update(chan, fctx)) nvif_event_block(&fctx->event); diff --git a/drivers/gpu/drm/nouveau/nouveau_fence.h b/drivers/gpu/drm/nouveau/nouveau_fence.h index 7c73c7c9834a..2c72d96ef17d 100644 --- a/drivers/gpu/drm/nouveau/nouveau_fence.h +++ b/drivers/gpu/drm/nouveau/nouveau_fence.h @@ -44,7 +44,7 @@ struct nouveau_fence_chan { char name[32]; struct nvif_event event; - int notify_ref, dead; + int notify_ref, dead, killed; }; struct nouveau_fence_priv {