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Message-Id: <20220225202614.225197-3-robdclark@gmail.com>
Date: Fri, 25 Feb 2022 12:26:14 -0800
From: Rob Clark <robdclark@...il.com>
To: dri-devel@...ts.freedesktop.org
Cc: freedreno@...ts.freedesktop.org, linux-arm-msm@...r.kernel.org,
Tvrtko Ursulin <tvrtko.ursulin@...ux.intel.com>,
Rob Clark <robdclark@...omium.org>,
Rob Clark <robdclark@...il.com>, Sean Paul <sean@...rly.run>,
Abhinav Kumar <quic_abhinavk@...cinc.com>,
David Airlie <airlied@...ux.ie>,
Daniel Vetter <daniel@...ll.ch>,
linux-kernel@...r.kernel.org (open list)
Subject: [PATCH 3/3] drm/msm: Expose client engine utilization via fdinfo
From: Rob Clark <robdclark@...omium.org>
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 <robdclark@...omium.org>
---
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 <robdclark@...il.com>
*/
+#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);
--
2.35.1
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