From patchwork Mon Feb 27 19:35:06 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Rob Clark X-Patchwork-Id: 657220 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 502C3C7EE30 for ; Mon, 27 Feb 2023 19:35:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229755AbjB0Tfx (ORCPT ); Mon, 27 Feb 2023 14:35:53 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41258 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229607AbjB0Tfw (ORCPT ); Mon, 27 Feb 2023 14:35:52 -0500 Received: from mail-pf1-x430.google.com (mail-pf1-x430.google.com [IPv6:2607:f8b0:4864:20::430]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 437D924125; Mon, 27 Feb 2023 11:35:48 -0800 (PST) Received: by mail-pf1-x430.google.com with SMTP id ay18so4272339pfb.2; Mon, 27 Feb 2023 11:35:48 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=eqSkMkOWvo198Qe9ugotk8774STpM+o2a7uvWEbmyhI=; b=jpgyHcjyAaGnPsMXVAm2GRBpiP1WcxO7Je/7kLkTA3rtRPpZM63s2qAVsYJzi0Z0gN sfedtybQXMObhUoSB6y9kaEQUwpYBvE5uqw2j9KZiJ3AsKHyM8xHBGvHoM1hrJChMfgS HW76rauQ4oKtTsGw+TcaRTOsLD8Q3BdSv4+8YA+qJdQZ78IZXFcvMXZg4igKohmUyOSo HfVAk60hbp+MRj/bfKwx2ERa55V1Jxq+3hc2nq32saAa2qacGQQPrHqcBl+UWMEpSL3z p0vnauDCADHvZvjkSCmWO2Pkb9aJJESQoMbAQB6MqbN6dhdo7mTt9GkkeFELH/jg7Qrn CFzw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=eqSkMkOWvo198Qe9ugotk8774STpM+o2a7uvWEbmyhI=; b=kuq7onsLPbrVnS/Zz2Qvwb/Hragjf94zHRmdlEBkffWOV+E39y3CniP733X6HAFQg8 b3EMUCdOdgUqcnt+R7hapy7xT2akGfuDW7h+w1pX4Fz1W6qbVyFPbBFv8wpF6p+0hMeA bDrBI64/HMXBxKCLr85QVdvGfYd8T85zhetgrGkU7rbogEfvaBssTE0++dgYxC8UIyyJ EegZuYMbExKaHh0U1XM0FGnJ9fS3ZYbdNk9xPZ6fJ6AOT32kcgkRUxhFg0octYovENKP CIOqWs07GLGPMsIGhyck5A4rvl5uVHEIvfB8jjHLPP+1ZNJqAtYxZkQ5aVqqSxWHM1pg qPkQ== X-Gm-Message-State: AO0yUKU1G9jqYVpVGn9McaU2zlFN7liHFq4yy9HwUTgaV7niFXF+Avwt pUpHx3kJ8EI4vxwgUpVzmao= X-Google-Smtp-Source: AK7set8dR7Le+9Dq5U/mXM+Gk/dwWnvs8RpwgZNM20/ZapctF7B3kGBdAxp4COFbDivh6cmRzWmwoA== X-Received: by 2002:a05:6a00:47:b0:5a9:b4eb:d262 with SMTP id i7-20020a056a00004700b005a9b4ebd262mr181600pfk.1.1677526547630; Mon, 27 Feb 2023 11:35:47 -0800 (PST) Received: from localhost ([2a00:79e1:abd:4a00:61b:48ed:72ab:435b]) by smtp.gmail.com with ESMTPSA id y14-20020aa7854e000000b0056283e2bdbdsm4581119pfn.138.2023.02.27.11.35.46 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 27 Feb 2023 11:35:47 -0800 (PST) From: Rob Clark To: dri-devel@lists.freedesktop.org Cc: freedreno@lists.freedesktop.org, Daniel Vetter , =?utf-8?q?Christian_K=C3=B6nig?= , =?utf-8?q?Michel_D=C3=A4nzer?= , Tvrtko Ursulin , Rodrigo Vivi , Alex Deucher , Pekka Paalanen , Simon Ser , Luben Tuikov , Rob Clark , Abhinav Kumar , Dmitry Baryshkov , Douglas Anderson , Gustavo Padovan , intel-gfx@lists.freedesktop.org, linaro-mm-sig@lists.linaro.org (moderated list:DMA BUFFER SHARING FRAMEWORK), linux-arm-msm@vger.kernel.org (open list:DRM DRIVER FOR MSM ADRENO GPU), linux-doc@vger.kernel.org (open list:DOCUMENTATION), linux-kernel@vger.kernel.org (open list), linux-media@vger.kernel.org (open list:DMA BUFFER SHARING FRAMEWORK), Liu Shixin , Sean Paul , Stephen Boyd , Vinod Polimera Subject: [PATCH v7 00/15] dma-fence: Deadline awareness Date: Mon, 27 Feb 2023 11:35:06 -0800 Message-Id: <20230227193535.2822389-1-robdclark@gmail.com> X-Mailer: git-send-email 2.39.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org From: Rob Clark This series adds a deadline hint to fences, so realtime deadlines such as vblank can be communicated to the fence signaller for power/ frequency management decisions. This is partially inspired by a trick i915 does, but implemented via dma-fence for a couple of reasons: 1) To continue to be able to use the atomic helpers 2) To support cases where display and gpu are different drivers This iteration adds a dma-fence ioctl to set a deadline (both to support igt-tests, and compositors which delay decisions about which client buffer to display), and a sw_sync ioctl to read back the deadline. IGT tests utilizing these can be found at: https://gitlab.freedesktop.org/robclark/igt-gpu-tools/-/commits/fence-deadline v1: https://patchwork.freedesktop.org/series/93035/ v2: Move filtering out of later deadlines to fence implementation to avoid increasing the size of dma_fence v3: Add support in fence-array and fence-chain; Add some uabi to support igt tests and userspace compositors. v4: Rebase, address various comments, and add syncobj deadline support, and sync_file EPOLLPRI based on experience with perf/ freq issues with clvk compute workloads on i915 (anv) v5: Clarify that this is a hint as opposed to a more hard deadline guarantee, switch to using u64 ns values in UABI (still absolute CLOCK_MONOTONIC values), drop syncobj related cap and driver feature flag in favor of allowing count_handles==0 for probing kernel support. v6: Re-work vblank helper to calculate time of _start_ of vblank, and work correctly if the last vblank event was more than a frame ago. Add (mostly unrelated) drm/msm patch which also uses the vblank helper. Use dma_fence_chain_contained(). More verbose syncobj UABI comments. Drop DMA_FENCE_FLAG_HAS_DEADLINE_BIT. v7: Fix kbuild complaints about vblank helper. Add more docs. Rob Clark (15): dma-buf/dma-fence: Add deadline awareness dma-buf/fence-array: Add fence deadline support dma-buf/fence-chain: Add fence deadline support dma-buf/dma-resv: Add a way to set fence deadline dma-buf/sync_file: Add SET_DEADLINE ioctl dma-buf/sync_file: Support (E)POLLPRI dma-buf/sw_sync: Add fence deadline support drm/scheduler: Add fence deadline support drm/syncobj: Add deadline support for syncobj waits drm/vblank: Add helper to get next vblank time drm/atomic-helper: Set fence deadline for vblank drm/msm: Add deadline based boost support drm/msm: Add wait-boost support drm/msm/atomic: Switch to vblank_start helper drm/i915: Add deadline based boost support Documentation/driver-api/dma-buf.rst | 6 ++ drivers/dma-buf/dma-fence-array.c | 11 ++++ drivers/dma-buf/dma-fence-chain.c | 12 ++++ drivers/dma-buf/dma-fence.c | 60 ++++++++++++++++++++ drivers/dma-buf/dma-resv.c | 22 ++++++++ drivers/dma-buf/sw_sync.c | 58 +++++++++++++++++++ drivers/dma-buf/sync_debug.h | 2 + drivers/dma-buf/sync_file.c | 27 +++++++++ drivers/gpu/drm/drm_atomic_helper.c | 36 ++++++++++++ drivers/gpu/drm/drm_syncobj.c | 64 ++++++++++++++++----- drivers/gpu/drm/drm_vblank.c | 53 +++++++++++++++--- drivers/gpu/drm/i915/i915_request.c | 20 +++++++ drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c | 15 ----- drivers/gpu/drm/msm/msm_atomic.c | 8 ++- drivers/gpu/drm/msm/msm_drv.c | 12 ++-- drivers/gpu/drm/msm/msm_fence.c | 74 +++++++++++++++++++++++++ drivers/gpu/drm/msm/msm_fence.h | 20 +++++++ drivers/gpu/drm/msm/msm_gem.c | 5 ++ drivers/gpu/drm/msm/msm_kms.h | 8 --- drivers/gpu/drm/scheduler/sched_fence.c | 46 +++++++++++++++ drivers/gpu/drm/scheduler/sched_main.c | 2 +- include/drm/drm_vblank.h | 1 + include/drm/gpu_scheduler.h | 17 ++++++ include/linux/dma-fence.h | 20 +++++++ include/linux/dma-resv.h | 2 + include/uapi/drm/drm.h | 17 ++++++ include/uapi/drm/msm_drm.h | 14 ++++- include/uapi/linux/sync_file.h | 26 +++++++++ 28 files changed, 603 insertions(+), 55 deletions(-)