From patchwork Mon Apr 17 20:12:11 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Rob Clark X-Patchwork-Id: 13214498 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 1FD3BC77B7A for ; Mon, 17 Apr 2023 20:12:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230254AbjDQUMc (ORCPT ); Mon, 17 Apr 2023 16:12:32 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41996 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230093AbjDQUM0 (ORCPT ); Mon, 17 Apr 2023 16:12:26 -0400 Received: from mail-pj1-x1036.google.com (mail-pj1-x1036.google.com [IPv6:2607:f8b0:4864:20::1036]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 31DD14C3B; Mon, 17 Apr 2023 13:12:24 -0700 (PDT) Received: by mail-pj1-x1036.google.com with SMTP id hg14-20020a17090b300e00b002471efa7a8fso14182168pjb.0; Mon, 17 Apr 2023 13:12:24 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20221208; t=1681762343; x=1684354343; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=tG6YslYBKkuazr2dWr4ftni9ZweXIehBqMaA0S88C5g=; b=ranf+f0tP4Pb5Lh3n2WP/yUu2QmlnNs1+iNecDfUR5KzPGDF2bZRgZqk1mWXpHnHt5 LvjFfEz45tozCyPEEtQjKkO8d/GjRWICY4Hv4JwW6qTQHxWO9CZfLaHGX8p2r4CW9gPn jMzksiwIj2fJfm/8vwU20S8sWgres5UTA5RA7TWq47jF1gyXHpo9quj4zTNbN3BzCa/u opUoVSqp96ZbME/+aQRIHHBrCgoRQ4uAp9Giig/8md+Q4eWVzwdTzUdpfQWjKL0hFWnn Vc3VUfTXzlPtTiL1SdnAxgrtE/Cl2UhuPJaDPjJVqT9V/wnujeoXWsWJHFu7pNrDbT3C VwNw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1681762343; x=1684354343; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=tG6YslYBKkuazr2dWr4ftni9ZweXIehBqMaA0S88C5g=; b=Z+yJmrZ3ohZiOcr0CS+qokah6ZIqqtoEKieTVdm0C9mwZGRqgFVp2pt3YE3NKyf8+A aWfbh5fAfeUlHaUfe4kgVNjvB1RhLn1o8mvOhfWbE1TxjqMxlLDuk0JIlCJnuHM1AXzE re2o/IZxCmByxWlFJWOisuuKDF3vi96wvl+B/+l9wZ/dDrrbE+/Dn161xNUFPrb/y/cG wIAGi6xFIVnjLycJszRWCPNmksv/6SGV0JV8ja9YiOi88+AMu1JjCa7WEuSxCYSD/6Go ZbuzzbJvrCrse8VsKqy2c4KBh0Gl9Qh0DGo5/pE0w6asc422EMZ+LpZjvuGGOq1eS2VQ zoHA== X-Gm-Message-State: AAQBX9c3RCuUUsSZbA43h4nPFN8PewjoZHdXE/ZGwf5uIihVKUGWbMFR oss4zACsgjkAhbP7acZ9+UM= X-Google-Smtp-Source: AKy350Z897P0ebUOEGMZ5BJSTsfQqtu+SrNiRCFFaWIYGgI+O1qDjfMdnTtEGHt9vqVAg5JBSzDliQ== X-Received: by 2002:a17:902:82c5:b0:1a1:b11d:6af5 with SMTP id u5-20020a17090282c500b001a1b11d6af5mr76812plz.52.1681762343629; Mon, 17 Apr 2023 13:12:23 -0700 (PDT) Received: from localhost ([2a00:79e1:abd:4a00:61b:48ed:72ab:435b]) by smtp.gmail.com with ESMTPSA id u19-20020a170902a61300b001a20b31a23fsm8094636plq.293.2023.04.17.13.12.22 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 17 Apr 2023 13:12:23 -0700 (PDT) From: Rob Clark To: dri-devel@lists.freedesktop.org Cc: Tvrtko Ursulin , Rob Clark , Rob Clark , Abhinav Kumar , Dmitry Baryshkov , Sean Paul , David Airlie , Daniel Vetter , Akhil P Oommen , Chia-I Wu , Konrad Dybcio , linux-arm-msm@vger.kernel.org (open list:DRM DRIVER FOR MSM ADRENO GPU), freedreno@lists.freedesktop.org (open list:DRM DRIVER FOR MSM ADRENO GPU), linux-kernel@vger.kernel.org (open list) Subject: [RFC 2/3] drm/msm: Rework get_comm_cmdline() helper Date: Mon, 17 Apr 2023 13:12:11 -0700 Message-Id: <20230417201215.448099-3-robdclark@gmail.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230417201215.448099-1-robdclark@gmail.com> References: <20230417201215.448099-1-robdclark@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org From: Rob Clark Make it work in terms of ctx so that it can be re-used for fdinfo. Signed-off-by: Rob Clark Reviewed-by: Emil Velikov --- drivers/gpu/drm/msm/adreno/adreno_gpu.c | 4 ++-- drivers/gpu/drm/msm/msm_drv.c | 2 ++ drivers/gpu/drm/msm/msm_gpu.c | 13 ++++++------- drivers/gpu/drm/msm/msm_gpu.h | 12 ++++++++++-- drivers/gpu/drm/msm/msm_submitqueue.c | 1 + 5 files changed, 21 insertions(+), 11 deletions(-) diff --git a/drivers/gpu/drm/msm/adreno/adreno_gpu.c b/drivers/gpu/drm/msm/adreno/adreno_gpu.c index bb38e728864d..43c4e1fea83f 100644 --- a/drivers/gpu/drm/msm/adreno/adreno_gpu.c +++ b/drivers/gpu/drm/msm/adreno/adreno_gpu.c @@ -412,7 +412,7 @@ int adreno_set_param(struct msm_gpu *gpu, struct msm_file_private *ctx, /* Ensure string is null terminated: */ str[len] = '\0'; - mutex_lock(&gpu->lock); + mutex_lock(&ctx->lock); if (param == MSM_PARAM_COMM) { paramp = &ctx->comm; @@ -423,7 +423,7 @@ int adreno_set_param(struct msm_gpu *gpu, struct msm_file_private *ctx, kfree(*paramp); *paramp = str; - mutex_unlock(&gpu->lock); + mutex_unlock(&ctx->lock); return 0; } diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c index 3d73b98d6a9c..ca0e89e46e13 100644 --- a/drivers/gpu/drm/msm/msm_drv.c +++ b/drivers/gpu/drm/msm/msm_drv.c @@ -581,6 +581,8 @@ static int context_init(struct drm_device *dev, struct drm_file *file) rwlock_init(&ctx->queuelock); kref_init(&ctx->ref); + ctx->pid = get_pid(task_pid(current)); + mutex_init(&ctx->lock); msm_submitqueue_init(dev, ctx); ctx->aspace = msm_gpu_create_private_address_space(priv->gpu, current); diff --git a/drivers/gpu/drm/msm/msm_gpu.c b/drivers/gpu/drm/msm/msm_gpu.c index c403912d13ab..f0f4f845c32d 100644 --- a/drivers/gpu/drm/msm/msm_gpu.c +++ b/drivers/gpu/drm/msm/msm_gpu.c @@ -327,18 +327,17 @@ find_submit(struct msm_ringbuffer *ring, uint32_t fence) static void retire_submits(struct msm_gpu *gpu); -static void get_comm_cmdline(struct msm_gem_submit *submit, char **comm, char **cmd) +static void get_comm_cmdline(struct msm_file_private *ctx, char **comm, char **cmd) { - struct msm_file_private *ctx = submit->queue->ctx; struct task_struct *task; - WARN_ON(!mutex_is_locked(&submit->gpu->lock)); - /* Note that kstrdup will return NULL if argument is NULL: */ + mutex_lock(&ctx->lock); *comm = kstrdup(ctx->comm, GFP_KERNEL); *cmd = kstrdup(ctx->cmdline, GFP_KERNEL); + mutex_unlock(&ctx->lock); - task = get_pid_task(submit->pid, PIDTYPE_PID); + task = get_pid_task(ctx->pid, PIDTYPE_PID); if (!task) return; @@ -372,7 +371,7 @@ static void recover_worker(struct kthread_work *work) if (submit->aspace) submit->aspace->faults++; - get_comm_cmdline(submit, &comm, &cmd); + get_comm_cmdline(submit->queue->ctx, &comm, &cmd); if (comm && cmd) { DRM_DEV_ERROR(dev->dev, "%s: offending task: %s (%s)\n", @@ -460,7 +459,7 @@ static void fault_worker(struct kthread_work *work) goto resume_smmu; if (submit) { - get_comm_cmdline(submit, &comm, &cmd); + get_comm_cmdline(submit->queue->ctx, &comm, &cmd); /* * When we get GPU iova faults, we can get 1000s of them, diff --git a/drivers/gpu/drm/msm/msm_gpu.h b/drivers/gpu/drm/msm/msm_gpu.h index 7a4fa1b8655b..b2023a42116b 100644 --- a/drivers/gpu/drm/msm/msm_gpu.h +++ b/drivers/gpu/drm/msm/msm_gpu.h @@ -377,17 +377,25 @@ struct msm_file_private { */ int sysprof; + /** @pid: Process that opened this file. */ + struct pid *pid; + + /** + * lock: Protects comm and cmdline + */ + struct mutex lock; + /** * comm: Overridden task comm, see MSM_PARAM_COMM * - * Accessed under msm_gpu::lock + * Accessed under msm_file_private::lock */ char *comm; /** * cmdline: Overridden task cmdline, see MSM_PARAM_CMDLINE * - * Accessed under msm_gpu::lock + * Accessed under msm_file_private::lock */ char *cmdline; diff --git a/drivers/gpu/drm/msm/msm_submitqueue.c b/drivers/gpu/drm/msm/msm_submitqueue.c index 0e803125a325..0444ba04fa06 100644 --- a/drivers/gpu/drm/msm/msm_submitqueue.c +++ b/drivers/gpu/drm/msm/msm_submitqueue.c @@ -61,6 +61,7 @@ void __msm_file_private_destroy(struct kref *kref) } msm_gem_address_space_put(ctx->aspace); + put_pid(ctx->pid); kfree(ctx->comm); kfree(ctx->cmdline); kfree(ctx); From patchwork Mon Apr 17 20:12:12 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Rob Clark X-Patchwork-Id: 13214497 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 C1800C77B76 for ; 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Mon, 17 Apr 2023 13:12:25 -0700 (PDT) Received: from localhost ([2a00:79e1:abd:4a00:61b:48ed:72ab:435b]) by smtp.gmail.com with ESMTPSA id w24-20020a17090aaf9800b0023d0c2f39f2sm9118078pjq.19.2023.04.17.13.12.24 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 17 Apr 2023 13:12:24 -0700 (PDT) From: Rob Clark To: dri-devel@lists.freedesktop.org Cc: Tvrtko Ursulin , Rob Clark , David Airlie , Daniel Vetter , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , Jonathan Corbet , Rob Clark , Abhinav Kumar , Dmitry Baryshkov , Sean Paul , linux-doc@vger.kernel.org (open list:DOCUMENTATION), linux-kernel@vger.kernel.org (open list), linux-arm-msm@vger.kernel.org (open list:DRM DRIVER FOR MSM ADRENO GPU), freedreno@lists.freedesktop.org (open list:DRM DRIVER FOR MSM ADRENO GPU) Subject: [RFC 3/3] drm/msm: Add comm/cmdline fields Date: Mon, 17 Apr 2023 13:12:12 -0700 Message-Id: <20230417201215.448099-4-robdclark@gmail.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230417201215.448099-1-robdclark@gmail.com> References: <20230417201215.448099-1-robdclark@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org From: Rob Clark Normally this would be the same information that can be obtained in other ways. But in some cases the process opening the drm fd is merely a sort of proxy for the actual process using the GPU. This is the case for guest VM processes using the GPU via virglrenderer, in which case the msm native-context renderer in virglrenderer overrides the comm/ cmdline to be the guest process's values. Exposing this via fdinfo allows tools like gputop to show something more meaningful than just a bunch of "pcivirtio-gpu" users. Signed-off-by: Rob Clark --- Documentation/gpu/drm-usage-stats.rst | 8 ++++++++ drivers/gpu/drm/msm/msm_gpu.c | 14 ++++++++++++++ 2 files changed, 22 insertions(+) diff --git a/Documentation/gpu/drm-usage-stats.rst b/Documentation/gpu/drm-usage-stats.rst index 8e00d53231e0..bc90bed455e3 100644 --- a/Documentation/gpu/drm-usage-stats.rst +++ b/Documentation/gpu/drm-usage-stats.rst @@ -148,6 +148,14 @@ percentage utilization of the engine, whereas drm-engine- only reflects time active without considering what frequency the engine is operating as a percentage of it's maximum frequency. +- drm-comm: + +Returns the clients executable path. + +- drm-cmdline: + +Returns the clients cmdline. + Implementation Details ====================== diff --git a/drivers/gpu/drm/msm/msm_gpu.c b/drivers/gpu/drm/msm/msm_gpu.c index f0f4f845c32d..1150dcbf28aa 100644 --- a/drivers/gpu/drm/msm/msm_gpu.c +++ b/drivers/gpu/drm/msm/msm_gpu.c @@ -148,12 +148,26 @@ int msm_gpu_pm_suspend(struct msm_gpu *gpu) return 0; } +static void get_comm_cmdline(struct msm_file_private *ctx, char **comm, char **cmd); + void msm_gpu_show_fdinfo(struct msm_gpu *gpu, struct msm_file_private *ctx, struct drm_printer *p) { + char *comm, *cmdline; + + get_comm_cmdline(ctx, &comm, &cmdline); + drm_printf(p, "drm-engine-gpu:\t%llu ns\n", ctx->elapsed_ns); drm_printf(p, "drm-cycles-gpu:\t%llu\n", ctx->cycles); drm_printf(p, "drm-maxfreq-gpu:\t%u Hz\n", gpu->fast_rate); + + if (comm) + drm_printf(p, "drm-comm:\t%s\n", comm); + if (cmdline) + drm_printf(p, "drm-cmdline:\t%s\n", cmdline); + + kfree(comm); + kfree(cmdline); } int msm_gpu_hw_init(struct msm_gpu *gpu)