From patchwork Mon Apr 17 22:55:10 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Rob Clark X-Patchwork-Id: 13214847 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 83B05C77B72 for ; Mon, 17 Apr 2023 22:55:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229681AbjDQWzS (ORCPT ); Mon, 17 Apr 2023 18:55:18 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39336 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229825AbjDQWzR (ORCPT ); Mon, 17 Apr 2023 18:55:17 -0400 Received: from mail-pl1-x633.google.com (mail-pl1-x633.google.com [IPv6:2607:f8b0:4864:20::633]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CEE6059DF; Mon, 17 Apr 2023 15:55:14 -0700 (PDT) Received: by mail-pl1-x633.google.com with SMTP id d9443c01a7336-1a516fb6523so20838825ad.3; Mon, 17 Apr 2023 15:55:14 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20221208; t=1681772114; x=1684364114; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=m9iYR2Co4JKSAqYdknl1fdrnccybCVbaZOt1uS3IMoI=; b=jF1aSbP/z+VAHYr733tjVAKHQskfbcRGT7nHvMxcrpK92pui607eWFCtRtCh2nLSDo HlXrbyH/wCcw+k7urF9aALSN6UnsW57iFclyAsowmir0jPXmFIHFa76/6qYCxiwSoTJc Sll8+MqlZJhqpoICAHdpFyp3aArZMUFPhu5vr1SVG0E/H7ocGH7+4DFJYSDDAsSFGYRG 6G/UanZsG6hagEsnypDS/u42ZcD+7GRiNDFyEcoHnK2uYKgPr8WhpK9bW16YMlUTr6Y4 1mXU25UFA63hPICSQ7T277Hkgl2NeJVkSlNKRNSLCgrj+1Yzrn60y5ZjObUVNVR4RkEL z78w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1681772114; x=1684364114; 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=m9iYR2Co4JKSAqYdknl1fdrnccybCVbaZOt1uS3IMoI=; b=IQOOxXjYydyqrpk82iVdBx8aB/nG5Ji7kMoDabqQf8+FZNirEl8CI5tWGs+a+J9/Ak iDQXtSxTJHiVn8dz6s3fQO8FlNEfx8xzkhPWxMYO4K5wUfy3jj1qS39G910UcZV9wSmr 76JuqPIqNv6WD0jR7y1tWI39d3GaJkwP4rNv1gdBEiV1+mjNuHaAjU/qSyyAlRbLliZ4 crE/dAVz+d1NXCzHCzeKmJW+sLZvMHs9ePPRAIGEXJ4NMVkbxfdrR3aHm630FtZiItdL SbjH+RO3p1cjiYWDycZl9/LFVyPRKk75rXcr5dQiQhjpgumLCbEqfPilS+cLLLmUl0uR XFKg== X-Gm-Message-State: AAQBX9cz6mTC7fRpzSW7dB86amJMSpNmFcf9r06w83yTQZkLkT3i3xQt 8VikaxjrowXf3r4vT2lTlkk= X-Google-Smtp-Source: AKy350bDp91wqZ9o16qSqyOTp5/kQfreQ5CbUQ03iZ80C8Ymc/TVcSCdZHcYiomfdA9z85lKA89oDA== X-Received: by 2002:a17:902:7290:b0:1a6:8ed5:428a with SMTP id d16-20020a170902729000b001a68ed5428amr109735pll.22.1681772114120; Mon, 17 Apr 2023 15:55:14 -0700 (PDT) Received: from localhost ([2a00:79e1:abd:4a00:61b:48ed:72ab:435b]) by smtp.gmail.com with ESMTPSA id jf1-20020a170903268100b001a1ccb37847sm8209039plb.146.2023.04.17.15.55.13 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 17 Apr 2023 15:55:13 -0700 (PDT) From: Rob Clark To: dri-devel@lists.freedesktop.org Cc: freedreno@lists.freedesktop.org, linux-arm-msm@vger.kernel.org, Rob Clark , Rob Clark , Abhinav Kumar , Dmitry Baryshkov , Sean Paul , David Airlie , Daniel Vetter , linux-kernel@vger.kernel.org (open list) Subject: [PATCH] drm/msm: Move cmdstream dumping out of sched kthread Date: Mon, 17 Apr 2023 15:55:10 -0700 Message-Id: <20230417225510.494951-1-robdclark@gmail.com> X-Mailer: git-send-email 2.39.2 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org From: Rob Clark This is something that can block for arbitrary amounts of time as userspace consumes from the FIFO. So we don't really want this to be in the fence signaling path. Signed-off-by: Rob Clark --- drivers/gpu/drm/msm/msm_gem_submit.c | 2 ++ drivers/gpu/drm/msm/msm_gpu.c | 4 ---- drivers/gpu/drm/msm/msm_rd.c | 24 ++++++++---------------- 3 files changed, 10 insertions(+), 20 deletions(-) diff --git a/drivers/gpu/drm/msm/msm_gem_submit.c b/drivers/gpu/drm/msm/msm_gem_submit.c index 89375c2e422b..6c6aefaa72be 100644 --- a/drivers/gpu/drm/msm/msm_gem_submit.c +++ b/drivers/gpu/drm/msm/msm_gem_submit.c @@ -952,6 +952,8 @@ int msm_ioctl_gem_submit(struct drm_device *dev, void *data, /* The scheduler owns a ref now: */ msm_gem_submit_get(submit); + msm_rd_dump_submit(priv->rd, submit, NULL); + drm_sched_entity_push_job(&submit->base); args->fence = submit->fence_id; diff --git a/drivers/gpu/drm/msm/msm_gpu.c b/drivers/gpu/drm/msm/msm_gpu.c index 1150dcbf28aa..513e2fccfefc 100644 --- a/drivers/gpu/drm/msm/msm_gpu.c +++ b/drivers/gpu/drm/msm/msm_gpu.c @@ -759,8 +759,6 @@ void msm_gpu_retire(struct msm_gpu *gpu) /* add bo's to gpu's ring, and kick gpu: */ void msm_gpu_submit(struct msm_gpu *gpu, struct msm_gem_submit *submit) { - struct drm_device *dev = gpu->dev; - struct msm_drm_private *priv = dev->dev_private; struct msm_ringbuffer *ring = submit->ring; unsigned long flags; @@ -772,8 +770,6 @@ void msm_gpu_submit(struct msm_gpu *gpu, struct msm_gem_submit *submit) submit->seqno = submit->hw_fence->seqno; - msm_rd_dump_submit(priv->rd, submit, NULL); - update_sw_cntrs(gpu); /* diff --git a/drivers/gpu/drm/msm/msm_rd.c b/drivers/gpu/drm/msm/msm_rd.c index db2f847c8535..8d5687d5ed78 100644 --- a/drivers/gpu/drm/msm/msm_rd.c +++ b/drivers/gpu/drm/msm/msm_rd.c @@ -83,15 +83,10 @@ struct msm_rd_state { bool open; - /* current submit to read out: */ - struct msm_gem_submit *submit; - /* fifo access is synchronized on the producer side by - * gpu->lock held by submit code (otherwise we could - * end up w/ cmds logged in different order than they - * were executed). And read_lock synchronizes the reads + * write_lock. And read_lock synchronizes the reads */ - struct mutex read_lock; + struct mutex read_lock, write_lock; wait_queue_head_t fifo_event; struct circ_buf fifo; @@ -243,6 +238,7 @@ static void rd_cleanup(struct msm_rd_state *rd) return; mutex_destroy(&rd->read_lock); + mutex_destroy(&rd->write_lock); kfree(rd); } @@ -258,6 +254,7 @@ static struct msm_rd_state *rd_init(struct drm_minor *minor, const char *name) rd->fifo.buf = rd->buf; mutex_init(&rd->read_lock); + mutex_init(&rd->write_lock); init_waitqueue_head(&rd->fifo_event); @@ -338,19 +335,15 @@ static void snapshot_buf(struct msm_rd_state *rd, if (!(submit->bos[idx].flags & MSM_SUBMIT_BO_READ)) return; - msm_gem_lock(&obj->base); buf = msm_gem_get_vaddr_active(&obj->base); if (IS_ERR(buf)) - goto out_unlock; + return; buf += offset; rd_write_section(rd, RD_BUFFER_CONTENTS, buf, size); msm_gem_put_vaddr_locked(&obj->base); - -out_unlock: - msm_gem_unlock(&obj->base); } /* called under gpu->lock */ @@ -364,10 +357,7 @@ void msm_rd_dump_submit(struct msm_rd_state *rd, struct msm_gem_submit *submit, if (!rd->open) return; - /* writing into fifo is serialized by caller, and - * rd->read_lock is used to serialize the reads - */ - WARN_ON(!mutex_is_locked(&submit->gpu->lock)); + mutex_lock(&rd->write_lock); if (fmt) { va_list args; @@ -424,5 +414,7 @@ void msm_rd_dump_submit(struct msm_rd_state *rd, struct msm_gem_submit *submit, break; } } + + mutex_unlock(&rd->write_lock); } #endif