From patchwork Tue May 12 08:59:36 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Daniel Vetter X-Patchwork-Id: 11542489 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id C271B15AB for ; Tue, 12 May 2020 09:00:46 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id A17DA214DB for ; Tue, 12 May 2020 09:00:46 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=ffwll.ch header.i=@ffwll.ch header.b="SDwGwQpJ" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A17DA214DB Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=ffwll.ch Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 181F06E8C9; Tue, 12 May 2020 09:00:11 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mail-wr1-x442.google.com (mail-wr1-x442.google.com [IPv6:2a00:1450:4864:20::442]) by gabe.freedesktop.org (Postfix) with ESMTPS id E36BA6E8BD for ; Tue, 12 May 2020 09:00:08 +0000 (UTC) Received: by mail-wr1-x442.google.com with SMTP id y16so7170850wrs.3 for ; Tue, 12 May 2020 02:00:08 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ffwll.ch; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=3/9uzJ3fevUELKKtrW0wppzXu6P75uy22NGdQSlmDz8=; b=SDwGwQpJaRBMJHLwj1aebHZrNlfPB3lM8R5Nxnw2iursO6/Tq0w7BeIxMzSmD391GY iPFvU8Hqv0qaq3/SShkh7frLZZM3Zpz71K/gsOA/w0EdvszMgINIghxumAUMRmpCHVZ6 PNjddJYrJBWaP/HRgZfmAEs0NKLQNEFW8NDqo= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=3/9uzJ3fevUELKKtrW0wppzXu6P75uy22NGdQSlmDz8=; b=rAwFGxRXPq4Fkahp9W8+V9C7ve27luYEpiaoLeZbWEa5j5AEGeAXwrEwuFTakyUS0z JHz8voXuhmSxrLAMmW29KswT5DndJGrNvwJTQfLGt4woFccScBJRSS1KtD6l5gY38eCI Lq6IyZJZkVhTeFel+CFWHKzfyWYZErZealMS/yu1mrJ9+vsn6zYgxIlvVl8Eq9zQzqBr kBLIVzxwLU+EqhTkP2GOJJyfRcdy6ILIqPs7zV0La1NvZmIWoqkfjiBH6kxzKst12/zs WWL4wLEQ+l9PmmBhaoZfrGFPDXaO5Ig1iMpyfDcuOyuibwVvQsHHZy+2yZL2+cH5W3mA O3+A== X-Gm-Message-State: AGi0PuZjviZ5KjG6OvayPmM8mR08NKbs/Ygy3kX9+XUZ5gpIJUZK/VeU TQ666CdrOyvvMJnT5ZJiAOENV3zXAFw= X-Google-Smtp-Source: APiQypJNdraV8h80zz8iXZE8tE3/9vYAqexMkf4hJDDcWF5MN2cVkPdcNZnVM3rSm/bq3B4xJ2e1wQ== X-Received: by 2002:a5d:6702:: with SMTP id o2mr17490653wru.231.1589274006358; Tue, 12 May 2020 02:00:06 -0700 (PDT) Received: from phenom.ffwll.local ([2a02:168:57f4:0:efd0:b9e5:5ae6:c2fa]) by smtp.gmail.com with ESMTPSA id y10sm18845457wrd.95.2020.05.12.02.00.05 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 12 May 2020 02:00:05 -0700 (PDT) From: Daniel Vetter To: DRI Development Subject: [RFC 09/17] drm/amdgpu: use dma-fence annotations in cs_submit() Date: Tue, 12 May 2020 10:59:36 +0200 Message-Id: <20200512085944.222637-10-daniel.vetter@ffwll.ch> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200512085944.222637-1-daniel.vetter@ffwll.ch> References: <20200512085944.222637-1-daniel.vetter@ffwll.ch> MIME-Version: 1.0 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: linux-rdma@vger.kernel.org, Daniel Vetter , intel-gfx@lists.freedesktop.org, LKML , amd-gfx@lists.freedesktop.org, Chris Wilson , linaro-mm-sig@lists.linaro.org, Daniel Vetter , =?utf-8?q?Christian_K=C3=B6nig?= , linux-media@vger.kernel.org Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" This is a bit tricky, since ->notifier_lock is held while calling dma_fence_wait we must ensure that also the read side (i.e. dma_fence_begin_signalling) is on the same side. If we mix this up lockdep complaints, and that's again why we want to have these annotations. A nice side effect of this is that because of the fs_reclaim priming for dma_fence_enable lockdep now automatically checks for us that nothing in here allocates memory, without even running any userptr workloads. Cc: linux-media@vger.kernel.org Cc: linaro-mm-sig@lists.linaro.org Cc: linux-rdma@vger.kernel.org Cc: amd-gfx@lists.freedesktop.org Cc: intel-gfx@lists.freedesktop.org Cc: Chris Wilson Cc: Maarten Lankhorst Cc: Christian König Signed-off-by: Daniel Vetter --- drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c index 7653f62b1b2d..6db3f3c629b0 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c @@ -1213,6 +1213,7 @@ static int amdgpu_cs_submit(struct amdgpu_cs_parser *p, struct amdgpu_job *job; uint64_t seq; int r; + bool fence_cookie; job = p->job; p->job = NULL; @@ -1227,6 +1228,8 @@ static int amdgpu_cs_submit(struct amdgpu_cs_parser *p, */ mutex_lock(&p->adev->notifier_lock); + fence_cookie = dma_fence_begin_signalling(); + /* If userptr are invalidated after amdgpu_cs_parser_bos(), return * -EAGAIN, drmIoctl in libdrm will restart the amdgpu_cs_ioctl. */ @@ -1264,12 +1267,14 @@ static int amdgpu_cs_submit(struct amdgpu_cs_parser *p, amdgpu_vm_move_to_lru_tail(p->adev, &fpriv->vm); ttm_eu_fence_buffer_objects(&p->ticket, &p->validated, p->fence); + dma_fence_end_signalling(fence_cookie); mutex_unlock(&p->adev->notifier_lock); return 0; error_abort: drm_sched_job_cleanup(&job->base); + dma_fence_end_signalling(fence_cookie); mutex_unlock(&p->adev->notifier_lock); error_unlock: