From patchwork Mon Mar 28 03:59:39 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: 12793141 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 23DE3C4332F for ; Mon, 28 Mar 2022 04:00:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237214AbiC1EBl (ORCPT ); Mon, 28 Mar 2022 00:01:41 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34018 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233550AbiC1EBk (ORCPT ); Mon, 28 Mar 2022 00:01:40 -0400 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 DC9804506A for ; Sun, 27 Mar 2022 20:59:57 -0700 (PDT) Received: by mail-yb1-xb4a.google.com with SMTP id n207-20020a25d6d8000000b0063bd7a74ae4so4353230ybg.21 for ; Sun, 27 Mar 2022 20:59:57 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=date:message-id:mime-version:subject:from:to:cc :content-transfer-encoding; bh=ZanSM+z+bqiT+dazTvxIhzoTPKfBDbdIJDmpkh0ngiA=; b=dEZSetUwhJ77JER9uOFHsQsp76JzF2DjT1q6+REMveb9Wt4BrGDGIQgD1zzZM9bma+ yhEZCho/DguXCN/LWIpS6/sXTLVs/7I8V57LnPEuNyRfMseJ+ScdFrLfEpJoGDWtMIFM t64Dd1vWRIhCANW1YNotTj71VdF86eU/Z1yZ/2P1/oZx3uAbxFDxrqLAVLQm8PT6wR0S qEnNzRfOZYWdnMNSE8GFnj9hFuliT0+m6mkGHNaGsEGbIMS5RBIfRao1fm6MCxklAbdl N8IuezzihPA3MdxNEuigRrXDRU77mTQDN2Wi23Fw13t4QVAYQLDOIAduNv28SyaFtkAo +W/Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:date:message-id:mime-version:subject:from:to:cc :content-transfer-encoding; bh=ZanSM+z+bqiT+dazTvxIhzoTPKfBDbdIJDmpkh0ngiA=; b=KsJcSXIvT18l2yJpRzLGc2NTq/AjCDfnzKLCUpyQgPyiJWhkOlvI8HGBZtRkPh/gAF nHpSPRihYEnf5qvcX/kljuffy2wIzoQdOya+fq+XPG6JLsfA+2mb/1I0iijy8uoGpnHY YQmoc6A48p5WqlIgPAJkLpXj0b7dXVxOyOZPX5cWRFX12WBs8m3Q4wV8wPwWz8/1M6Io OCoOGYx9qexZFtAaSNRFbU2FT/ySn6l0NXUG5WeV6yvNPyCr0PorcsvlZvtpc/hEASK2 jS/vWdk3kHR6XuQ5gy7Xv3XadTKZgoUdu/2XsoVizgIMJ43HVo3tASjWxAhSzzo8lyYD omTw== X-Gm-Message-State: AOAM5317ZghE3mn6F1ahxpkUclFcFNPzHPjKW1AmX7dZdkfM7+K0QA77 G4SaCb2tMjGNul1s2tEsVvtZwZo8gPGWzt4= X-Google-Smtp-Source: ABdhPJxDNziGYjzb/ZRm1pevbyvVdw8eQjc7VwyCozk0n3Hczh8k36e8/hVih9NxH0h+d3gtUEehLBH2IOPtLgg= X-Received: from tj2.c.googlers.com ([fda3:e722:ac3:cc00:20:ed76:c0a8:187]) (user=tjmercier job=sendgmr) by 2002:a25:25c3:0:b0:633:8079:1768 with SMTP id l186-20020a2525c3000000b0063380791768mr21066931ybl.488.1648439997054; Sun, 27 Mar 2022 20:59:57 -0700 (PDT) Date: Mon, 28 Mar 2022 03:59:39 +0000 Message-Id: <20220328035951.1817417-1-tjmercier@google.com> Mime-Version: 1.0 X-Mailer: git-send-email 2.35.1.1021.g381101b075-goog Subject: [RFC v4 0/8] Proposal for a GPU cgroup controller From: "T.J. Mercier" To: tjmercier@google.com, David Airlie , Daniel Vetter , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , 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, mkoutny@suse.com, skhan@linuxfoundation.org, 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-kselftest@vger.kernel.org This patch series revisits the proposal for a GPU cgroup controller to track and limit memory allocations by various device/allocator subsystems. The patch series also contains a simple prototype to illustrate how Android intends to implement DMA-BUF allocator attribution using the GPU cgroup controller. The prototype does not include resource limit enforcements. Changelog: v4: Skip test if not run as root per Shuah Khan Add better test logging for abnormal child termination per Shuah Khan Adjust ordering of charge/uncharge during transfer to avoid potentially hitting cgroup limit per Michal Koutný Adjust gpucg_try_charge critical section for charge transfer functionality Fix uninitialized return code error for dmabuf_try_charge error case v3: Remove Upstreaming Plan from gpu-cgroup.rst per John Stultz Use more common dual author commit message format per John Stultz Remove android from binder changes title per Todd Kjos Add a kselftest for this new behavior per Greg Kroah-Hartman Include details on behavior for all combinations of kernel/userspace versions in changelog (thanks Suren Baghdasaryan) per Greg Kroah-Hartman. Fix pid and uid types in binder UAPI header v2: See the previous revision of this change submitted by Hridya Valsaraju at: https://lore.kernel.org/all/20220115010622.3185921-1-hridya@google.com/ 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. Pointers to struct gpucg and struct gpucg_device tracking the current associations were added to the dma_buf struct to achieve this. Fix incorrect Kconfig help section indentation per Randy Dunlap. History of the GPU cgroup controller ==================================== The GPU/DRM cgroup controller came into being when a consensus[1] was reached that the resources it tracked were unsuitable to be integrated into memcg. Originally, the proposed controller was specific to the DRM subsystem and was intended to track GEM buffers and GPU-specific resources[2]. In order to help establish a unified memory accounting model for all GPU and all related subsystems, Daniel Vetter put forth a suggestion to move it out of the DRM subsystem so that it can be used by other DMA-BUF exporters as well[3]. This RFC proposes an interface that does the same. [1]: https://patchwork.kernel.org/project/dri-devel/cover/20190501140438.9506-1-brian.welty@intel.com/#22624705 [2]: https://lore.kernel.org/amd-gfx/20210126214626.16260-1-brian.welty@intel.com/ [3]: https://lore.kernel.org/amd-gfx/YCVOl8%2F87bqRSQei@phenom.ffwll.local/ Hridya Valsaraju (5): gpu: rfc: Proposal for a GPU cgroup controller cgroup: gpu: Add a cgroup controller for allocator attribution of GPU memory dmabuf: heaps: export system_heap buffers with GPU cgroup charging dmabuf: Add gpu cgroup charge transfer function binder: Add a buffer flag to relinquish ownership of fds T.J. Mercier (3): dmabuf: Use the GPU cgroup charge/uncharge APIs binder: use __kernel_pid_t and __kernel_uid_t for userspace selftests: Add binder cgroup gpu memory transfer test Documentation/gpu/rfc/gpu-cgroup.rst | 183 +++++++ Documentation/gpu/rfc/index.rst | 4 + drivers/android/binder.c | 26 + drivers/dma-buf/dma-buf.c | 107 ++++ drivers/dma-buf/dma-heap.c | 27 + drivers/dma-buf/heaps/system_heap.c | 3 + include/linux/cgroup_gpu.h | 139 +++++ include/linux/cgroup_subsys.h | 4 + include/linux/dma-buf.h | 22 +- include/linux/dma-heap.h | 11 + include/uapi/linux/android/binder.h | 5 +- init/Kconfig | 7 + kernel/cgroup/Makefile | 1 + kernel/cgroup/gpu.c | 362 +++++++++++++ .../selftests/drivers/android/binder/Makefile | 8 + .../drivers/android/binder/binder_util.c | 254 +++++++++ .../drivers/android/binder/binder_util.h | 32 ++ .../selftests/drivers/android/binder/config | 4 + .../binder/test_dmabuf_cgroup_transfer.c | 484 ++++++++++++++++++ 19 files changed, 1679 insertions(+), 4 deletions(-) create mode 100644 Documentation/gpu/rfc/gpu-cgroup.rst create mode 100644 include/linux/cgroup_gpu.h create mode 100644 kernel/cgroup/gpu.c create mode 100644 tools/testing/selftests/drivers/android/binder/Makefile create mode 100644 tools/testing/selftests/drivers/android/binder/binder_util.c create mode 100644 tools/testing/selftests/drivers/android/binder/binder_util.h create mode 100644 tools/testing/selftests/drivers/android/binder/config create mode 100644 tools/testing/selftests/drivers/android/binder/test_dmabuf_cgroup_transfer.c