From patchwork Tue Aug 2 15:51:36 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Rob Clark X-Patchwork-Id: 12934844 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 gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 3386CC19F28 for ; Tue, 2 Aug 2022 15:52:26 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 1E1289050B; Tue, 2 Aug 2022 15:51:55 +0000 (UTC) Received: from mail-pl1-x632.google.com (mail-pl1-x632.google.com [IPv6:2607:f8b0:4864:20::632]) by gabe.freedesktop.org (Postfix) with ESMTPS id 2795D9045B; Tue, 2 Aug 2022 15:51:27 +0000 (UTC) Received: by mail-pl1-x632.google.com with SMTP id w10so13869013plq.0; Tue, 02 Aug 2022 08:51:27 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc; bh=AwYCVdrGkHnM2D+4h4BxfmYuAccPj8wFXhKV37+GyLo=; b=ARajg9SXrp7L34xI/L1wA9184aueBkou7taRAYgfMmeFpXW82dWb/YI4KTnJKaEbNV OFtbKltU38+EurNqiYyNdr4uf/qnSQs7hT6xr+aJWWNNHwJSEj9k80xdZwBARN4jMAyg 9ur5vywUmCBQxIUPt2ql9Lw7EVeGMxHeF7/riXMIDRvMEjFM6MYHfbJo14nYlEgzahac TqX5N9JilHHTxo4Vzl9QxoRMXXlVC6TEHxhIfIxaxnszL+KVAuUSUjhT5+Z5DvzazeZI CkDOCDTemgWzlJi0uCdM1SP8gBncRJER24+oONSfIMWh9gLn2/gfKDYTzza4Yp9UYmG/ 8EgA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc; bh=AwYCVdrGkHnM2D+4h4BxfmYuAccPj8wFXhKV37+GyLo=; b=PqR4H9/bIvbv8+xdFvJq8WyvXLdbEyXXnIdW7vlwYp77cbiEQ/09oL4SS0abCRBGmX Eqw20G+lkZwAdvjIUlQ0ijrm05b1esO9GTvxWgmUx7eozIFrV5JxzKMlpEYLmbresa1y 5KxtaMx1ojREcEBSQNbIObcKmuyW8KJRiLRPOMrAjZXDqwV1n2mqk5gN5y8e4xLM8siP wlvk/oh8s7/XuvWSyBzNfTDsj4hknRcAbi4PelvU8YhF/tCWoeH9/scx/Yblc2opJ40M Ke/GVtmmrt2n7R+T+SObFbx17Eqrqjs9O9Iqw4U+1xna3Siiyie5op3utiEVcWvqH7Su 67Cg== X-Gm-Message-State: ACgBeo3pabSASEB0z5TOJS4kQeEJPBqdlPmwg5Bu9n+ZiCxZwKmBN2T2 FeUopOhaWebYcyMO+VbqqFTaC5NUTpU= X-Google-Smtp-Source: AA6agR5ybwbYaWs8UaMfNMG/agnFBgQ19TL8DiPTztRpVe/R+rveUXnDpdfNDBUn4PmfyOb+0vRVOQ== X-Received: by 2002:a17:902:e5d1:b0:16b:ece4:79e6 with SMTP id u17-20020a170902e5d100b0016bece479e6mr21971931plf.83.1659455486238; Tue, 02 Aug 2022 08:51:26 -0700 (PDT) Received: from localhost ([2a00:79e1:abd:4a00:2703:3c72:eb1a:cffd]) by smtp.gmail.com with ESMTPSA id y1-20020a17090a2b4100b001e292e30129sm11127180pjc.22.2022.08.02.08.51.24 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 02 Aug 2022 08:51:25 -0700 (PDT) From: Rob Clark To: dri-devel@lists.freedesktop.org Subject: [PATCH v4 03/15] drm/msm: Split out idr_lock Date: Tue, 2 Aug 2022 08:51:36 -0700 Message-Id: <20220802155152.1727594-4-robdclark@gmail.com> X-Mailer: git-send-email 2.36.1 In-Reply-To: <20220802155152.1727594-1-robdclark@gmail.com> References: <20220802155152.1727594-1-robdclark@gmail.com> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Rob Clark , David Airlie , linux-arm-msm@vger.kernel.org, Abhinav Kumar , open list , Sean Paul , Dmitry Baryshkov , freedreno@lists.freedesktop.org Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" From: Rob Clark Otherwise if we hit reclaim pinning objects in the submit path, we'll be blocking retire_worker trying to free a submit. Signed-off-by: Rob Clark --- drivers/gpu/drm/msm/msm_drv.c | 4 ++-- drivers/gpu/drm/msm/msm_gem_submit.c | 10 ++++++++-- drivers/gpu/drm/msm/msm_gpu.h | 4 +++- drivers/gpu/drm/msm/msm_submitqueue.c | 1 + 4 files changed, 14 insertions(+), 5 deletions(-) diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c index 1ed4cd09dbf8..d7ca025457b6 100644 --- a/drivers/gpu/drm/msm/msm_drv.c +++ b/drivers/gpu/drm/msm/msm_drv.c @@ -883,13 +883,13 @@ static int wait_fence(struct msm_gpu_submitqueue *queue, uint32_t fence_id, * retired, so if the fence is not found it means there is nothing * to wait for */ - ret = mutex_lock_interruptible(&queue->lock); + ret = mutex_lock_interruptible(&queue->idr_lock); if (ret) return ret; fence = idr_find(&queue->fence_idr, fence_id); if (fence) fence = dma_fence_get_rcu(fence); - mutex_unlock(&queue->lock); + mutex_unlock(&queue->idr_lock); if (!fence) return 0; diff --git a/drivers/gpu/drm/msm/msm_gem_submit.c b/drivers/gpu/drm/msm/msm_gem_submit.c index c7819781879c..16c662808522 100644 --- a/drivers/gpu/drm/msm/msm_gem_submit.c +++ b/drivers/gpu/drm/msm/msm_gem_submit.c @@ -72,9 +72,9 @@ void __msm_gem_submit_destroy(struct kref *kref) unsigned i; if (submit->fence_id) { - mutex_lock(&submit->queue->lock); + mutex_lock(&submit->queue->idr_lock); idr_remove(&submit->queue->fence_idr, submit->fence_id); - mutex_unlock(&submit->queue->lock); + mutex_unlock(&submit->queue->idr_lock); } dma_fence_put(submit->user_fence); @@ -881,6 +881,8 @@ int msm_ioctl_gem_submit(struct drm_device *dev, void *data, submit->nr_cmds = i; + mutex_lock(&queue->idr_lock); + /* * If using userspace provided seqno fence, validate that the id * is available before arming sched job. Since access to fence_idr @@ -889,6 +891,7 @@ int msm_ioctl_gem_submit(struct drm_device *dev, void *data, */ if ((args->flags & MSM_SUBMIT_FENCE_SN_IN) && idr_find(&queue->fence_idr, args->fence)) { + mutex_unlock(&queue->idr_lock); ret = -EINVAL; goto out; } @@ -921,6 +924,9 @@ int msm_ioctl_gem_submit(struct drm_device *dev, void *data, submit->user_fence, 1, INT_MAX, GFP_KERNEL); } + + mutex_unlock(&queue->idr_lock); + if (submit->fence_id < 0) { ret = submit->fence_id; submit->fence_id = 0; diff --git a/drivers/gpu/drm/msm/msm_gpu.h b/drivers/gpu/drm/msm/msm_gpu.h index 4d935fedd2ac..962d2070bcdf 100644 --- a/drivers/gpu/drm/msm/msm_gpu.h +++ b/drivers/gpu/drm/msm/msm_gpu.h @@ -466,7 +466,8 @@ static inline int msm_gpu_convert_priority(struct msm_gpu *gpu, int prio, * @node: node in the context's list of submitqueues * @fence_idr: maps fence-id to dma_fence for userspace visible fence * seqno, protected by submitqueue lock - * @lock: submitqueue lock + * @idr_lock: for serializing access to fence_idr + * @lock: submitqueue lock for serializing submits on a queue * @ref: reference count * @entity: the submit job-queue */ @@ -479,6 +480,7 @@ struct msm_gpu_submitqueue { struct msm_file_private *ctx; struct list_head node; struct idr fence_idr; + struct mutex idr_lock; struct mutex lock; struct kref ref; struct drm_sched_entity *entity; diff --git a/drivers/gpu/drm/msm/msm_submitqueue.c b/drivers/gpu/drm/msm/msm_submitqueue.c index f486a3cd4e55..c6929e205b51 100644 --- a/drivers/gpu/drm/msm/msm_submitqueue.c +++ b/drivers/gpu/drm/msm/msm_submitqueue.c @@ -200,6 +200,7 @@ int msm_submitqueue_create(struct drm_device *drm, struct msm_file_private *ctx, *id = queue->id; idr_init(&queue->fence_idr); + mutex_init(&queue->idr_lock); mutex_init(&queue->lock); list_add_tail(&queue->node, &ctx->submitqueues);