From patchwork Wed Mar 9 16:52:14 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: "T.J. Mercier" X-Patchwork-Id: 12775334 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id D36B7C46467 for ; Wed, 9 Mar 2022 17:04:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237593AbiCIRFk (ORCPT ); Wed, 9 Mar 2022 12:05:40 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51114 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238944AbiCIREN (ORCPT ); Wed, 9 Mar 2022 12:04:13 -0500 Received: from mail-yb1-xb4a.google.com (mail-yb1-xb4a.google.com [IPv6:2607:f8b0:4864:20::b4a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8098619DEA6 for ; Wed, 9 Mar 2022 08:53:01 -0800 (PST) Received: by mail-yb1-xb4a.google.com with SMTP id n66-20020a254045000000b0062883b59ddbso2135796yba.12 for ; Wed, 09 Mar 2022 08:53:01 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=date:in-reply-to:message-id:mime-version:references:subject:from:to :cc:content-transfer-encoding; bh=lhHGzZoREQNnf55wN1HaeVUD3hjLL00JJ5cetBP+eaQ=; b=gKIbC0k/5p+fyNlConlMN+xPe/ebk8ebvd/uWg6T6vooL8MMIfva9qwy7Lpdbivqq7 oJoIgx2KDTrB7PC2LXU6JYkOQgHlH1J78wsI/1CybgkEOgCETFPbvTPvvBZjF3KtEYrW 804ENocSNg1iNY0zuUQhjo4BolEmxZkdv9JShsHPaP3w6yigklJE9Q9l+xaJDLCwR09A 4DGED7VchRj5zoSQ42M5Way/Ra/0h5dn8HeEz5ZQ9KAEmdn2oNLN4RDfrLj7Imh7317M J7FgGxhT0IWthtTIVaNXYJbTS5HECV7f+G560rkLLiA/e5xw92yjAG61zMDzxkzWjfrM JpaQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:date:in-reply-to:message-id:mime-version :references:subject:from:to:cc:content-transfer-encoding; bh=lhHGzZoREQNnf55wN1HaeVUD3hjLL00JJ5cetBP+eaQ=; b=sL+dQ7Nx/3WtcRCPsioMqkOQjlOD7zmzLWKY8Ci9D9neEDwKtX5SvbAZavuqIFkYIZ WWTgiC8khx6bZhOSclug8wsRNcjRc1tYa3Ff+7bBjXjViDdbV88P0JN8irAXp5H5XWxA wXJShZwaib32tjdS+Hw69YUqMqnMcZGXWqBcL8z5gO3rxAeC4aFUzuOktY/DfZ+v2CI7 YWkL+8JxHS2VBFPQ/AEwicwRa73paQjdKF4yasIWqkLmx1VZWx33/NXQlGZHfJVE2vhz SbMYEub+KwNBPoIzni75BdIYN/bkXiB7t1TmwMpeilVsFtlVFHWNFAPP6wI2i1b+HY+7 8VOA== X-Gm-Message-State: AOAM532Hi8+tA0z2icx3bnAbHq8Ny3mRu3qBZw+nS+p9S7jeknEGufZC fATO7A9a1HDa2Y1nyv4Ol1jlwOKXkfnu5WM= X-Google-Smtp-Source: ABdhPJwK4yKwsDlaoEUAS3Vm5fm7rENo1CQsEFqudzHVLPT45CzkuU3D+7W8hxwy+2V9Wem//6DQfWjRXmIBTMk= X-Received: from tj2.c.googlers.com ([fda3:e722:ac3:cc00:20:ed76:c0a8:187]) (user=tjmercier job=sendgmr) by 2002:a05:6902:1541:b0:628:a0ed:ad49 with SMTP id r1-20020a056902154100b00628a0edad49mr513167ybu.419.1646844765074; Wed, 09 Mar 2022 08:52:45 -0800 (PST) Date: Wed, 9 Mar 2022 16:52:14 +0000 In-Reply-To: <20220309165222.2843651-1-tjmercier@google.com> Message-Id: <20220309165222.2843651-5-tjmercier@google.com> Mime-Version: 1.0 References: <20220309165222.2843651-1-tjmercier@google.com> X-Mailer: git-send-email 2.35.1.616.g0bdcbb4464-goog Subject: [RFC v3 4/8] dmabuf: heaps: export system_heap buffers with GPU cgroup charging From: "T.J. Mercier" To: Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Daniel Vetter , Jonathan Corbet , Greg Kroah-Hartman , " =?utf-8?q?Arve_Hj=C3=B8n?= =?utf-8?q?nev=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 , Shuah Khan Cc: kaleshsingh@google.com, Kenny.Ho@amd.com, "T.J. Mercier" , dri-devel@lists.freedesktop.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, linaro-mm-sig@lists.linaro.org, cgroups@vger.kernel.org, linux-kselftest@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org From: Hridya Valsaraju 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. Signed-off-by: Hridya Valsaraju Signed-off-by: T.J. Mercier --- v3 changes Use more common dual author commit message format per John Stultz. v2 changes 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