From patchwork Fri Feb 11 16:18:27 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: "T.J. 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Mercier" To: Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Daniel Vetter , Jonathan Corbet , Greg Kroah-Hartman , " =?utf-8?q?Arve_Hj=C3=B8?= =?utf-8?q?nnev=C3=A5g?= " , Todd Kjos , Martijn Coenen , Joel Fernandes , Christian Brauner , Hridya Valsaraju , Suren Baghdasaryan , Sumit Semwal , " =?utf-8?q?Christian_K=C3=B6nig?= " , Benjamin Gaignard , Liam Mark , Laura Abbott , Brian Starkey , John Stultz , Tejun Heo , Zefan Li , Johannes Weiner X-Mailman-Approved-At: Fri, 11 Feb 2022 22:40:02 +0000 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-doc@vger.kernel.org, Kenny.Ho@amd.com, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, linaro-mm-sig@lists.linaro.org, kaleshsingh@google.com, cgroups@vger.kernel.org, "T.J. Mercier" , linux-media@vger.kernel.org Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" All DMA heaps now register a new GPU cgroup device upon creation, and the system_heap now exports buffers associated with its GPU cgroup device for tracking purposes. From: Hridya Valsaraju Signed-off-by: Hridya Valsaraju Co-developed-by: T.J. Mercier Signed-off-by: T.J. Mercier --- changes in v2 - Move dma-buf cgroup charge transfer from a dma_buf_op defined by every heap to a single dma-buf function for all heaps per Daniel Vetter and Christian König. drivers/dma-buf/dma-heap.c | 27 +++++++++++++++++++++++++++ drivers/dma-buf/heaps/system_heap.c | 3 +++ include/linux/dma-heap.h | 11 +++++++++++ 3 files changed, 41 insertions(+) diff --git a/drivers/dma-buf/dma-heap.c b/drivers/dma-buf/dma-heap.c index 8f5848aa144f..885072427775 100644 --- a/drivers/dma-buf/dma-heap.c +++ b/drivers/dma-buf/dma-heap.c @@ -7,6 +7,7 @@ */ #include +#include #include #include #include @@ -31,6 +32,7 @@ * @heap_devt heap device node * @list list head connecting to list of heaps * @heap_cdev heap char device + * @gpucg_dev gpu cgroup device for memory accounting * * Represents a heap of memory from which buffers can be made. */ @@ -41,6 +43,9 @@ struct dma_heap { dev_t heap_devt; struct list_head list; struct cdev heap_cdev; +#ifdef CONFIG_CGROUP_GPU + struct gpucg_device gpucg_dev; +#endif }; static LIST_HEAD(heap_list); @@ -216,6 +221,26 @@ const char *dma_heap_get_name(struct dma_heap *heap) return heap->name; } +#ifdef CONFIG_CGROUP_GPU +/** + * dma_heap_get_gpucg_dev() - get struct gpucg_device for the heap. + * @heap: DMA-Heap to get the gpucg_device struct for. + * + * Returns: + * The gpucg_device struct for the heap. NULL if the GPU cgroup controller is + * not enabled. + */ +struct gpucg_device *dma_heap_get_gpucg_dev(struct dma_heap *heap) +{ + return &heap->gpucg_dev; +} +#else /* CONFIG_CGROUP_GPU */ +struct gpucg_device *dma_heap_get_gpucg_dev(struct dma_heap *heap) +{ + return NULL; +} +#endif /* CONFIG_CGROUP_GPU */ + struct dma_heap *dma_heap_add(const struct dma_heap_export_info *exp_info) { struct dma_heap *heap, *h, *err_ret; @@ -288,6 +313,8 @@ struct dma_heap *dma_heap_add(const struct dma_heap_export_info *exp_info) list_add(&heap->list, &heap_list); mutex_unlock(&heap_list_lock); + gpucg_register_device(dma_heap_get_gpucg_dev(heap), exp_info->name); + return heap; err2: diff --git a/drivers/dma-buf/heaps/system_heap.c b/drivers/dma-buf/heaps/system_heap.c index ab7fd896d2c4..752a05c3cfe2 100644 --- a/drivers/dma-buf/heaps/system_heap.c +++ b/drivers/dma-buf/heaps/system_heap.c @@ -395,6 +395,9 @@ static struct dma_buf *system_heap_allocate(struct dma_heap *heap, exp_info.ops = &system_heap_buf_ops; exp_info.size = buffer->len; exp_info.flags = fd_flags; +#ifdef CONFIG_CGROUP_GPU + exp_info.gpucg_dev = dma_heap_get_gpucg_dev(heap); +#endif exp_info.priv = buffer; dmabuf = dma_buf_export(&exp_info); if (IS_ERR(dmabuf)) { diff --git a/include/linux/dma-heap.h b/include/linux/dma-heap.h index 0c05561cad6e..e447a61d054e 100644 --- a/include/linux/dma-heap.h +++ b/include/linux/dma-heap.h @@ -10,6 +10,7 @@ #define _DMA_HEAPS_H #include +#include #include struct dma_heap; @@ -59,6 +60,16 @@ void *dma_heap_get_drvdata(struct dma_heap *heap); */ const char *dma_heap_get_name(struct dma_heap *heap); +/** + * dma_heap_get_gpucg_dev() - get a pointer to the struct gpucg_device for the + * heap. + * @heap: DMA-Heap to retrieve gpucg_device for. + * + * Returns: + * The gpucg_device struct for the heap. + */ +struct gpucg_device *dma_heap_get_gpucg_dev(struct dma_heap *heap); + /** * dma_heap_add - adds a heap to dmabuf heaps * @exp_info: information needed to register this heap