From patchwork Mon Oct 1 10:32:20 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Gerd Hoffmann X-Patchwork-Id: 10621803 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 2B96FA6A for ; Mon, 1 Oct 2018 10:32:49 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 1BE1B293B7 for ; Mon, 1 Oct 2018 10:32:49 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 10388293DA; Mon, 1 Oct 2018 10:32:49 +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 96B3E293B7 for ; Mon, 1 Oct 2018 10:32:48 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 8A0A96E121; Mon, 1 Oct 2018 10:32:31 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mx1.redhat.com (mx1.redhat.com [209.132.183.28]) by gabe.freedesktop.org (Postfix) with ESMTPS id 3783A6E118 for ; Mon, 1 Oct 2018 10:32:30 +0000 (UTC) Received: from smtp.corp.redhat.com (int-mx08.intmail.prod.int.phx2.redhat.com [10.5.11.23]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 50D3E309174E; Mon, 1 Oct 2018 10:32:29 +0000 (UTC) Received: from sirius.home.kraxel.org (ovpn-116-29.ams2.redhat.com [10.36.116.29]) by smtp.corp.redhat.com (Postfix) with ESMTP id 40BC12936C; Mon, 1 Oct 2018 10:32:26 +0000 (UTC) Received: by sirius.home.kraxel.org (Postfix, from userid 1000) id 4032F9D388; Mon, 1 Oct 2018 12:32:24 +0200 (CEST) From: Gerd Hoffmann To: dri-devel@lists.freedesktop.org Subject: [PATCH 6/8] drm/virtio: fix resource id handling Date: Mon, 1 Oct 2018 12:32:20 +0200 Message-Id: <20181001103222.11924-7-kraxel@redhat.com> In-Reply-To: <20181001103222.11924-1-kraxel@redhat.com> References: <20181001103222.11924-1-kraxel@redhat.com> X-Scanned-By: MIMEDefang 2.84 on 10.5.11.23 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.41]); Mon, 01 Oct 2018 10:32:29 +0000 (UTC) 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: David Airlie , open list , Gerd Hoffmann , "open list:VIRTIO GPU DRIVER" MIME-Version: 1.0 Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" X-Virus-Scanned: ClamAV using ClamSMTP Move virtio_gpu_resource_id_{get,put} to virtgpu_object.c and make them static. Allocate and free the id on creation and destroy, drop all other calls. That way objects have a valid handle for the whole lifetime of the object. Also fixes ids leaking. Worst offender are dumb buffers, and I think some error paths too. Signed-off-by: Gerd Hoffmann --- drivers/gpu/drm/virtio/virtgpu_drv.h | 3 --- drivers/gpu/drm/virtio/virtgpu_fb.c | 1 - drivers/gpu/drm/virtio/virtgpu_gem.c | 1 - drivers/gpu/drm/virtio/virtgpu_ioctl.c | 1 - drivers/gpu/drm/virtio/virtgpu_object.c | 23 +++++++++++++++++++++++ drivers/gpu/drm/virtio/virtgpu_vq.c | 20 -------------------- 6 files changed, 23 insertions(+), 26 deletions(-) diff --git a/drivers/gpu/drm/virtio/virtgpu_drv.h b/drivers/gpu/drm/virtio/virtgpu_drv.h index 4a39877ce6..1c321e484d 100644 --- a/drivers/gpu/drm/virtio/virtgpu_drv.h +++ b/drivers/gpu/drm/virtio/virtgpu_drv.h @@ -260,9 +260,6 @@ int virtio_gpu_surface_dirty(struct virtio_gpu_framebuffer *qfb, /* virtio vg */ int virtio_gpu_alloc_vbufs(struct virtio_gpu_device *vgdev); void virtio_gpu_free_vbufs(struct virtio_gpu_device *vgdev); -void virtio_gpu_resource_id_get(struct virtio_gpu_device *vgdev, - uint32_t *resid); -void virtio_gpu_resource_id_put(struct virtio_gpu_device *vgdev, uint32_t id); void virtio_gpu_cmd_create_resource(struct virtio_gpu_device *vgdev, struct virtio_gpu_object *bo, uint32_t format, diff --git a/drivers/gpu/drm/virtio/virtgpu_fb.c b/drivers/gpu/drm/virtio/virtgpu_fb.c index c22a8246b6..fb1cc8b2f1 100644 --- a/drivers/gpu/drm/virtio/virtgpu_fb.c +++ b/drivers/gpu/drm/virtio/virtgpu_fb.c @@ -231,7 +231,6 @@ static int virtio_gpufb_create(struct drm_fb_helper *helper, if (IS_ERR(obj)) return PTR_ERR(obj); - virtio_gpu_resource_id_get(vgdev, &obj->hw_res_handle); virtio_gpu_cmd_create_resource(vgdev, obj, format, mode_cmd.width, mode_cmd.height); diff --git a/drivers/gpu/drm/virtio/virtgpu_gem.c b/drivers/gpu/drm/virtio/virtgpu_gem.c index 665d18a49d..f065863939 100644 --- a/drivers/gpu/drm/virtio/virtgpu_gem.c +++ b/drivers/gpu/drm/virtio/virtgpu_gem.c @@ -103,7 +103,6 @@ int virtio_gpu_mode_dumb_create(struct drm_file *file_priv, format = virtio_gpu_translate_format(DRM_FORMAT_HOST_XRGB8888); obj = gem_to_virtio_gpu_obj(gobj); - virtio_gpu_resource_id_get(vgdev, &obj->hw_res_handle); virtio_gpu_cmd_create_resource(vgdev, obj, format, args->width, args->height); diff --git a/drivers/gpu/drm/virtio/virtgpu_ioctl.c b/drivers/gpu/drm/virtio/virtgpu_ioctl.c index f9c55ecfca..681edd9c92 100644 --- a/drivers/gpu/drm/virtio/virtgpu_ioctl.c +++ b/drivers/gpu/drm/virtio/virtgpu_ioctl.c @@ -253,7 +253,6 @@ static int virtio_gpu_resource_create_ioctl(struct drm_device *dev, void *data, if (IS_ERR(qobj)) return PTR_ERR(qobj); obj = &qobj->gem_base; - virtio_gpu_resource_id_get(vgdev, &qobj->hw_res_handle); if (!vgdev->has_virgl_3d) { virtio_gpu_cmd_create_resource(vgdev, qobj, rc->format, diff --git a/drivers/gpu/drm/virtio/virtgpu_object.c b/drivers/gpu/drm/virtio/virtgpu_object.c index 6611c487d7..8bd1ebe13b 100644 --- a/drivers/gpu/drm/virtio/virtgpu_object.c +++ b/drivers/gpu/drm/virtio/virtgpu_object.c @@ -25,6 +25,26 @@ #include "virtgpu_drv.h" +static void virtio_gpu_resource_id_get(struct virtio_gpu_device *vgdev, + uint32_t *resid) +{ + int handle; + + idr_preload(GFP_KERNEL); + spin_lock(&vgdev->resource_idr_lock); + handle = idr_alloc(&vgdev->resource_idr, NULL, 1, 0, GFP_NOWAIT); + spin_unlock(&vgdev->resource_idr_lock); + idr_preload_end(); + *resid = handle; +} + +static void virtio_gpu_resource_id_put(struct virtio_gpu_device *vgdev, uint32_t id) +{ + spin_lock(&vgdev->resource_idr_lock); + idr_remove(&vgdev->resource_idr, id); + spin_unlock(&vgdev->resource_idr_lock); +} + static void virtio_gpu_ttm_bo_destroy(struct ttm_buffer_object *tbo) { struct virtio_gpu_object *bo; @@ -40,6 +60,7 @@ static void virtio_gpu_ttm_bo_destroy(struct ttm_buffer_object *tbo) if (bo->vmap) virtio_gpu_object_kunmap(bo); drm_gem_object_release(&bo->gem_base); + virtio_gpu_resource_id_put(vgdev, bo->hw_res_handle); kfree(bo); } @@ -81,9 +102,11 @@ int virtio_gpu_object_create(struct virtio_gpu_device *vgdev, bo = kzalloc(sizeof(struct virtio_gpu_object), GFP_KERNEL); if (bo == NULL) return -ENOMEM; + virtio_gpu_resource_id_get(vgdev, &bo->hw_res_handle); size = roundup(size, PAGE_SIZE); ret = drm_gem_object_init(vgdev->ddev, &bo->gem_base, size); if (ret != 0) { + virtio_gpu_resource_id_put(vgdev, bo->hw_res_handle); kfree(bo); return ret; } diff --git a/drivers/gpu/drm/virtio/virtgpu_vq.c b/drivers/gpu/drm/virtio/virtgpu_vq.c index 45da3c87b6..f6e875cdcd 100644 --- a/drivers/gpu/drm/virtio/virtgpu_vq.c +++ b/drivers/gpu/drm/virtio/virtgpu_vq.c @@ -38,26 +38,6 @@ + MAX_INLINE_CMD_SIZE \ + MAX_INLINE_RESP_SIZE) -void virtio_gpu_resource_id_get(struct virtio_gpu_device *vgdev, - uint32_t *resid) -{ - int handle; - - idr_preload(GFP_KERNEL); - spin_lock(&vgdev->resource_idr_lock); - handle = idr_alloc(&vgdev->resource_idr, NULL, 1, 0, GFP_NOWAIT); - spin_unlock(&vgdev->resource_idr_lock); - idr_preload_end(); - *resid = handle; -} - -void virtio_gpu_resource_id_put(struct virtio_gpu_device *vgdev, uint32_t id) -{ - spin_lock(&vgdev->resource_idr_lock); - idr_remove(&vgdev->resource_idr, id); - spin_unlock(&vgdev->resource_idr_lock); -} - void virtio_gpu_ctrl_ack(struct virtqueue *vq) { struct drm_device *dev = vq->vdev->priv;