From patchwork Tue Jul 19 17:18:47 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Rob Clark X-Patchwork-Id: 591704 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 DF88BC433EF for ; Tue, 19 Jul 2022 17:18:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238719AbiGSRSv (ORCPT ); Tue, 19 Jul 2022 13:18:51 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42864 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238677AbiGSRSt (ORCPT ); Tue, 19 Jul 2022 13:18:49 -0400 Received: from mail-pg1-x532.google.com (mail-pg1-x532.google.com [IPv6:2607:f8b0:4864:20::532]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4EC7A481DC; Tue, 19 Jul 2022 10:18:46 -0700 (PDT) Received: by mail-pg1-x532.google.com with SMTP id q16so10976175pgq.6; Tue, 19 Jul 2022 10:18:46 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=AwYCVdrGkHnM2D+4h4BxfmYuAccPj8wFXhKV37+GyLo=; b=ZSfDdk6YMZ9Xin72zYX3eWgoVjeyCsNqo4nzrWEtQerLnQeGj7wiD+XdydEuSNBGiM AixBzDQDz9V5PL5tQ4STW7Mw9fb7b7vq1IGT7puboqUIyK84PeEKE/gUO/7uaZFUQE5Y Z81tah/N3JXlJ30gtWFPqJaW1j/+1FEJG40ZmHhw/qGAYwZgTk9jdCM/f9D/S+ZOQxDl SKLBbIG1cqZOK2TRo3kbaOch1HlfqECN6PnborDuNCfKfmQxUpi1stONUoUSWtLYfR0h i61xaa3uO0VhOLWj1M1U2Y4cIBjPCU0Q0ioyR6M1lTvD6XbBR7gq0kMWijeLBuZHYwGj w/Nw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=AwYCVdrGkHnM2D+4h4BxfmYuAccPj8wFXhKV37+GyLo=; b=GIpltOmuOeR8gRA153b/2aTMrtpF5j8ozy6P26j3cBQWkrvHMxQpKWXCm8TsUWb3Bf bl+wlpRR4pF1pwP3UhNw+jeEKFtBfwQoULY5OdCwvzHo5QIp7TA+pfk/gGBy+8KNzcLp ty7Gs0s6zzmg0qcruV0uK5vrIsEp0x0K4MTh8IV5Qx85YFoqd4eoY8SZMh2z9puIoE/V 8YPdSVN80RWDFHAzklflnXuSK+XWeZKbNqNH93SS6kWP82OPEvDaaiDWahIZbrgqOdwq +bpgpX/y2DZ6+tJVKNQm6422mvioj7RyCA1WfWeBt2gN1dqapObPQOrhbVINSBa0f8k6 mzvg== X-Gm-Message-State: AJIora/iGi4+z9yUmNBm2PAMEpkfQCmTTUzpW+jhxLlZ2GcWeGqX2z/a cq5dFRrdEJ1toPNvI4quBvo= X-Google-Smtp-Source: AGRyM1vrTXrLejBYmT+gXPQJMxY4GT3MYbQgcVB/BHfFc2lus4Q8+kzsdRFYebbfBQxkcNHsU67MRQ== X-Received: by 2002:a63:1246:0:b0:41a:58f:9fee with SMTP id 6-20020a631246000000b0041a058f9feemr14074197pgs.413.1658251126440; Tue, 19 Jul 2022 10:18:46 -0700 (PDT) Received: from localhost ([2a00:79e1:abd:4a00:2703:3c72:eb1a:cffd]) by smtp.gmail.com with ESMTPSA id go18-20020a17090b03d200b001ef87123615sm1995924pjb.37.2022.07.19.10.18.45 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 19 Jul 2022 10:18:45 -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 v2 03/13] drm/msm: Split out idr_lock Date: Tue, 19 Jul 2022 10:18:47 -0700 Message-Id: <20220719171900.289265-4-robdclark@gmail.com> X-Mailer: git-send-email 2.36.1 In-Reply-To: <20220719171900.289265-1-robdclark@gmail.com> References: <20220719171900.289265-1-robdclark@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org 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);