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[73.25.156.94]) by smtp.gmail.com with ESMTPSA id b3-20020a056a00114300b004e099ec2871sm4209159pfm.154.2022.02.25.12.25.42 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 25 Feb 2022 12:25:42 -0800 (PST) From: Rob Clark To: dri-devel@lists.freedesktop.org Cc: freedreno@lists.freedesktop.org, linux-arm-msm@vger.kernel.org, Tvrtko Ursulin , Rob Clark , Rob Clark , Sean Paul , Abhinav Kumar , David Airlie , Daniel Vetter , linux-kernel@vger.kernel.org (open list) Subject: [PATCH 3/3] drm/msm: Expose client engine utilization via fdinfo Date: Fri, 25 Feb 2022 12:26:14 -0800 Message-Id: <20220225202614.225197-3-robdclark@gmail.com> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220225202614.225197-1-robdclark@gmail.com> References: <20220225202614.225197-1-robdclark@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org From: Rob Clark Similar to AMD commit 874442541133 ("drm/amdgpu: Add show_fdinfo() interface"), using the infrastructure added in previous patches, we add basic client info and GPU engine utilisation for msm. Example output: # cat /proc/`pgrep glmark2`/fdinfo/6 pos: 0 flags: 02400002 mnt_id: 21 ino: 162 drm-driver: msm drm-client-id: 7 drm-engine-gpu: 1734371319 ns drm-cycles-gpu: 1153645024 See also: https://patchwork.freedesktop.org/patch/468505/ Signed-off-by: Rob Clark --- drivers/gpu/drm/msm/msm_drv.c | 17 ++++++++++++++++- drivers/gpu/drm/msm/msm_gpu.c | 20 ++++++++++++++++++-- drivers/gpu/drm/msm/msm_gpu.h | 19 +++++++++++++++++++ 3 files changed, 53 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c index 16f37f3d9061..fdf401e6f09e 100644 --- a/drivers/gpu/drm/msm/msm_drv.c +++ b/drivers/gpu/drm/msm/msm_drv.c @@ -911,7 +911,22 @@ static const struct drm_ioctl_desc msm_ioctls[] = { DRM_IOCTL_DEF_DRV(MSM_SUBMITQUEUE_QUERY, msm_ioctl_submitqueue_query, DRM_RENDER_ALLOW), }; -DEFINE_DRM_GEM_FOPS(fops); +static void msm_fop_show_fdinfo(struct seq_file *m, struct file *f) +{ + struct drm_file *file = f->private_data; + struct drm_device *dev = file->minor->dev; + struct msm_drm_private *priv = dev->dev_private; + struct drm_printer p = drm_seq_file_printer(m); + + if (!priv->gpu) + return; + + msm_gpu_show_fdinfo(priv->gpu, file->driver_priv, &p); +} + +DEFINE_DRM_GEM_FOPS(fops, + .show_fdinfo = msm_fop_show_fdinfo, +); static const struct drm_driver msm_driver = { .driver_features = DRIVER_GEM | diff --git a/drivers/gpu/drm/msm/msm_gpu.c b/drivers/gpu/drm/msm/msm_gpu.c index 173ebd449f2f..6302f3fe564b 100644 --- a/drivers/gpu/drm/msm/msm_gpu.c +++ b/drivers/gpu/drm/msm/msm_gpu.c @@ -4,6 +4,8 @@ * Author: Rob Clark */ +#include "drm/drm_drv.h" + #include "msm_gpu.h" #include "msm_gem.h" #include "msm_mmu.h" @@ -146,6 +148,15 @@ int msm_gpu_pm_suspend(struct msm_gpu *gpu) return 0; } +void msm_gpu_show_fdinfo(struct msm_gpu *gpu, struct msm_file_private *ctx, + struct drm_printer *p) +{ + drm_printf(p, "drm-driver:\t%s\n", gpu->dev->driver->name); + drm_printf(p, "drm-client-id:\t%u\n", ctx->seqno); + drm_printf(p, "drm-engine-gpu:\t%llu ns\n", ctx->elapsed_ns); + drm_printf(p, "drm-cycles-gpu:\t%llu\n", ctx->cycles); +} + int msm_gpu_hw_init(struct msm_gpu *gpu) { int ret; @@ -643,7 +654,7 @@ static void retire_submit(struct msm_gpu *gpu, struct msm_ringbuffer *ring, { int index = submit->seqno % MSM_GPU_SUBMIT_STATS_COUNT; volatile struct msm_gpu_submit_stats *stats; - u64 elapsed, clock = 0; + u64 elapsed, clock = 0, cycles; unsigned long flags; stats = &ring->memptrs->stats[index]; @@ -651,12 +662,17 @@ static void retire_submit(struct msm_gpu *gpu, struct msm_ringbuffer *ring, elapsed = (stats->alwayson_end - stats->alwayson_start) * 10000; do_div(elapsed, 192); + cycles = stats->cpcycles_end - stats->cpcycles_start; + /* Calculate the clock frequency from the number of CP cycles */ if (elapsed) { - clock = (stats->cpcycles_end - stats->cpcycles_start) * 1000; + clock = cycles * 1000; do_div(clock, elapsed); } + submit->queue->ctx->elapsed_ns += elapsed; + submit->queue->ctx->cycles += cycles; + trace_msm_gpu_submit_retired(submit, elapsed, clock, stats->alwayson_start, stats->alwayson_end); diff --git a/drivers/gpu/drm/msm/msm_gpu.h b/drivers/gpu/drm/msm/msm_gpu.h index 696e2ed8a236..ad4fe05dee03 100644 --- a/drivers/gpu/drm/msm/msm_gpu.h +++ b/drivers/gpu/drm/msm/msm_gpu.h @@ -328,6 +328,22 @@ struct msm_file_private { struct kref ref; int seqno; + /** + * elapsed: + * + * The total (cumulative) elapsed time GPU was busy with rendering + * from this context in ns. + */ + uint64_t elapsed_ns; + + /** + * cycles: + * + * The total (cumulative) GPU cycles elapsed attributed to this + * context. + */ + uint64_t cycles; + /** * entities: * @@ -511,6 +527,9 @@ static inline void gpu_write64(struct msm_gpu *gpu, u32 lo, u32 hi, u64 val) int msm_gpu_pm_suspend(struct msm_gpu *gpu); int msm_gpu_pm_resume(struct msm_gpu *gpu); +void msm_gpu_show_fdinfo(struct msm_gpu *gpu, struct msm_file_private *ctx, + struct drm_printer *p); + int msm_submitqueue_init(struct drm_device *drm, struct msm_file_private *ctx); struct msm_gpu_submitqueue *msm_submitqueue_get(struct msm_file_private *ctx, u32 id);