From patchwork Fri Oct 12 15:08:56 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Maarten Lankhorst X-Patchwork-Id: 1587131 Return-Path: X-Original-To: patchwork-dri-devel@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork2.kernel.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) by patchwork2.kernel.org (Postfix) with ESMTP id A6A4FDFF71 for ; Fri, 12 Oct 2012 15:13:06 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 6C4C2A0E79 for ; Fri, 12 Oct 2012 08:13:06 -0700 (PDT) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from youngberry.canonical.com (youngberry.canonical.com [91.189.89.112]) by gabe.freedesktop.org (Postfix) with ESMTP id 72722A0E6E; Fri, 12 Oct 2012 08:08:57 -0700 (PDT) Received: from 5ed48cef.cm-7-5c.dynamic.ziggo.nl ([94.212.140.239] helo=[192.168.1.128]) by youngberry.canonical.com with esmtpsa (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1TMgrB-0006WY-1I; Fri, 12 Oct 2012 15:08:57 +0000 Message-ID: <50783288.6070701@canonical.com> Date: Fri, 12 Oct 2012 17:08:56 +0200 From: Maarten Lankhorst User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:15.0) Gecko/20120912 Thunderbird/15.0.1 MIME-Version: 1.0 To: nouveau@lists.freedesktop.org Subject: [PATCH 3/3, resend with fixed to field] drm/nouveau: unpin buffers before releasing to prevent lockdep warnings Cc: dri-devel@lists.freedesktop.org X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.13 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: dri-devel-bounces+patchwork-dri-devel=patchwork.kernel.org@lists.freedesktop.org Errors-To: dri-devel-bounces+patchwork-dri-devel=patchwork.kernel.org@lists.freedesktop.org This will otherwise cause a lockdep splat, so warn when nouveau forgets to unpin a buffer, and fix up the ones I've hit. Signed-off-by: Maarten Lankhorst --- drivers/gpu/drm/nouveau/nouveau_abi16.c | 1 + drivers/gpu/drm/nouveau/nouveau_fbcon.c | 1 + drivers/gpu/drm/nouveau/nouveau_gem.c | 3 ++- drivers/gpu/drm/nouveau/nouveau_prime.c | 13 +++++++++---- 4 files changed, 13 insertions(+), 5 deletions(-) diff --git a/drivers/gpu/drm/nouveau/nouveau_abi16.c b/drivers/gpu/drm/nouveau/nouveau_abi16.c index cc79c79..acc6b08 100644 --- a/drivers/gpu/drm/nouveau/nouveau_abi16.c +++ b/drivers/gpu/drm/nouveau/nouveau_abi16.c @@ -123,6 +123,7 @@ nouveau_abi16_chan_fini(struct nouveau_abi16 *abi16, if (chan->ntfy) { nouveau_bo_vma_del(chan->ntfy, &chan->ntfy_vma); + nouveau_bo_unpin(chan->ntfy); drm_gem_object_unreference_unlocked(chan->ntfy->gem); } diff --git a/drivers/gpu/drm/nouveau/nouveau_fbcon.c b/drivers/gpu/drm/nouveau/nouveau_fbcon.c index 67a1a06..f337976 100644 --- a/drivers/gpu/drm/nouveau/nouveau_fbcon.c +++ b/drivers/gpu/drm/nouveau/nouveau_fbcon.c @@ -429,6 +429,7 @@ nouveau_fbcon_destroy(struct drm_device *dev, struct nouveau_fbdev *fbcon) if (nouveau_fb->nvbo) { nouveau_bo_unmap(nouveau_fb->nvbo); nouveau_bo_vma_del(nouveau_fb->nvbo, &nouveau_fb->vma); + nouveau_bo_unpin(nouveau_fb->nvbo); drm_gem_object_unreference_unlocked(nouveau_fb->nvbo->gem); nouveau_fb->nvbo = NULL; } diff --git a/drivers/gpu/drm/nouveau/nouveau_gem.c b/drivers/gpu/drm/nouveau/nouveau_gem.c index 5972ecd..6d8391d 100644 --- a/drivers/gpu/drm/nouveau/nouveau_gem.c +++ b/drivers/gpu/drm/nouveau/nouveau_gem.c @@ -52,7 +52,8 @@ nouveau_gem_object_del(struct drm_gem_object *gem) return; nvbo->gem = NULL; - if (unlikely(nvbo->pin_refcnt)) { + /* Lockdep hates you for doing reserve with gem object lock held */ + if (WARN_ON_ONCE(nvbo->pin_refcnt)) { nvbo->pin_refcnt = 1; nouveau_bo_unpin(nvbo); } diff --git a/drivers/gpu/drm/nouveau/nouveau_prime.c b/drivers/gpu/drm/nouveau/nouveau_prime.c index 366462c..bd785dd 100644 --- a/drivers/gpu/drm/nouveau/nouveau_prime.c +++ b/drivers/gpu/drm/nouveau/nouveau_prime.c @@ -57,10 +57,11 @@ static void nouveau_gem_dmabuf_release(struct dma_buf *dma_buf) { struct nouveau_bo *nvbo = dma_buf->priv; - if (nvbo->gem->export_dma_buf == dma_buf) { + if (nvbo->gem->export_dma_buf == dma_buf) nvbo->gem->export_dma_buf = NULL; - drm_gem_object_unreference_unlocked(nvbo->gem); - } + + nouveau_bo_unpin(nvbo); + drm_gem_object_unreference_unlocked(nvbo->gem); } static void *nouveau_gem_kmap_atomic(struct dma_buf *dma_buf, unsigned long page_num) @@ -175,13 +176,17 @@ struct dma_buf *nouveau_gem_prime_export(struct drm_device *dev, { struct nouveau_bo *nvbo = nouveau_gem_object(obj); int ret = 0; + struct dma_buf *buf; /* pin buffer into GTT */ ret = nouveau_bo_pin(nvbo, TTM_PL_FLAG_TT); if (ret) return ERR_PTR(-EINVAL); - return dma_buf_export(nvbo, &nouveau_dmabuf_ops, obj->size, flags); + buf = dma_buf_export(nvbo, &nouveau_dmabuf_ops, obj->size, flags); + if (IS_ERR(buf)) + nouveau_bo_unpin(nvbo); + return buf; } struct drm_gem_object *nouveau_gem_prime_import(struct drm_device *dev,