From patchwork Mon Jul 26 14:46:47 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Rob Clark X-Patchwork-Id: 486851 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-10.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7474CC4338F for ; Mon, 26 Jul 2021 14:42:42 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5CB7E60EB2 for ; Mon, 26 Jul 2021 14:42:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234201AbhGZOCM (ORCPT ); Mon, 26 Jul 2021 10:02:12 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60500 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233206AbhGZOCM (ORCPT ); Mon, 26 Jul 2021 10:02:12 -0400 Received: from mail-pj1-x102b.google.com (mail-pj1-x102b.google.com [IPv6:2607:f8b0:4864:20::102b]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0CB59C061757; Mon, 26 Jul 2021 07:42:41 -0700 (PDT) Received: by mail-pj1-x102b.google.com with SMTP id k4-20020a17090a5144b02901731c776526so20055495pjm.4; Mon, 26 Jul 2021 07:42:41 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=mmZtBUD8FI8lAdMJxftPxEHcUSTCfysVGalUwueoWH4=; b=p6gTRrXebriroz5lpJEedRHHLPEF5PrQW1oT4GLT9AVhBp7eORVPfvllupeNgycSmR p5jSMkjoNKDCl6E8RtISCfFzfgZovrOraoOzWacbDlJwLCZpkBHTMNHU8NoHJtGZFlhr pxD6nrJcYY2R7rgnHobaAkNU1+hYNRZD4ym8PrlPFwWJ1zGW8b+fnrVNB0fqXRbkmPJ2 GM0Xrl30CliMAo2TJk6F4/ekpu0TuwMwBwBXszH8yB3q0ILiISxRLX8X8UItLM3+8Mg5 xaj4nMqYKJiJOXFvwMQSSthfphnxlQeoKPbNgAbGr6h6vFvF0Q0TZIwV68sihktFjK+x TnAQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=mmZtBUD8FI8lAdMJxftPxEHcUSTCfysVGalUwueoWH4=; b=CR2CO+N1Q72rK/S9L2ruXc5C5AERUtc5TTXmQIYyfugnrYjvl67KHCxcv6PnLvjqMU fwIDYh3j9JqAnEJOnWV9sJmgwkG23uMmk0M5vbk24GQZ2aM/ZPgUW6mcHEq36Jz6JT2u XjCccHlFcoNzhEFw4adfRoQqnBLtcVfa9VIkUZuYqKusYmW35J/pORCO5GQB5HqqybHb suoQfv11yrjhRp0CRkTaA+hZ8ulefCPdyImUXTwRofQ9tWAQJSb8J6CvP4JvrD/i6RBo SsZhc/+WDwiFa/CeqEib/s1+Re83B8BnPshZ7+AxzogoSM+r7nvScd8ykArIYrURDB/w R5Pg== X-Gm-Message-State: AOAM532X0BgffNPHVSXWzudEs4xz+UOQBqt3Q8bD1NuDqXlKi+DmMfTN O52BbwZWNwwHsNc7bei42eQ= X-Google-Smtp-Source: ABdhPJzxc+2f2N1SAJHTHCLInNoulpVt4huSwpjsfugRuLUGMSOT3GQkEv6zxQQcCZkDBlj7z4sPfw== X-Received: by 2002:a17:90a:5886:: with SMTP id j6mr9527059pji.34.1627310560540; Mon, 26 Jul 2021 07:42:40 -0700 (PDT) Received: from localhost ([2601:1c0:5200:a6:307:a401:7b76:c6e5]) by smtp.gmail.com with ESMTPSA id f4sm47901401pgs.3.2021.07.26.07.42.39 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 26 Jul 2021 07:42:39 -0700 (PDT) From: Rob Clark To: dri-devel@lists.freedesktop.org Cc: Rob Clark , Akhil P Oommen , Douglas Anderson , freedreno@lists.freedesktop.org (open list:DRM DRIVER FOR MSM ADRENO GPU), Jonathan Marek , Jordan Crouse , linux-arm-msm@vger.kernel.org (open list:DRM DRIVER FOR MSM ADRENO GPU), linux-kernel@vger.kernel.org (open list), Sai Prakash Ranjan , Sharat Masetty Subject: [PATCH v2 0/3] drm/msm: Improved devfreq tuning Date: Mon, 26 Jul 2021 07:46:47 -0700 Message-Id: <20210726144653.2180096-1-robdclark@gmail.com> X-Mailer: git-send-email 2.31.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org From: Rob Clark This is the outcome of trying to fix some bad gpu freq behavior seen in some use-cases, in particular mobile games that throttle themselves to 30fps. With the existing tuning, we'd end up spending most of the time that we should be running fast at a low freq, and most of the idle time at a high freq. First two patches are prep, 3/3 is the interesting bit. See the patch description in 3/3 for more details. v2: struct_mutex serializes the submit path, but not the retire path, so add a dedicated lock to serialize active<->idle transitions. Rob Clark (3): drm/msm: Split out devfreq handling drm/msm: Split out get_freq() helper drm/msm: Devfreq tuning drivers/gpu/drm/msm/Makefile | 1 + drivers/gpu/drm/msm/adreno/a6xx_gpu.c | 4 +- drivers/gpu/drm/msm/msm_gpu.c | 132 +++-------------- drivers/gpu/drm/msm/msm_gpu.h | 61 +++++++- drivers/gpu/drm/msm/msm_gpu_devfreq.c | 203 ++++++++++++++++++++++++++ 5 files changed, 280 insertions(+), 121 deletions(-) create mode 100644 drivers/gpu/drm/msm/msm_gpu_devfreq.c