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drm/etnaviv: export client GPU usage statistics via fdinfo

Browse source 
This exposes a accumulated GPU active time per client via the
fdinfo infrastructure.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
This commit is contained in:
Lucas Stach 2023-02-01 16:26:09 +01:00
parent d306788b6e
commit 97804a133c
1 changed files with 42 additions and 1 deletions
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43
drivers/gpu/drm/etnaviv/etnaviv_drv.c
View file

@ -22,6 +22,7 @@
#include "etnaviv_gem.h"
#include "etnaviv_mmu.h"
#include "etnaviv_perfmon.h"
#include "common.xml.h"
/*
* DRM operations:
@ -475,7 +476,47 @@ static const struct drm_ioctl_desc etnaviv_ioctls[] = {
ETNA_IOCTL(PM_QUERY_SIG, pm_query_sig, DRM_RENDER_ALLOW),
};
DEFINE_DRM_GEM_FOPS(fops);
static void etnaviv_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 etnaviv_drm_private *priv = dev->dev_private;
struct etnaviv_file_private *ctx = file->driver_priv;
/*
* For a description of the text output format used here, see
* Documentation/gpu/drm-usage-stats.rst.
*/
seq_printf(m, "drm-driver:\t%s\n", dev->driver->name);
seq_printf(m, "drm-client-id:\t%u\n", ctx->id);
for (int i = 0; i < ETNA_MAX_PIPES; i++) {
struct etnaviv_gpu *gpu = priv->gpu[i];
char engine[10] = "UNK";
int cur = 0;
if (!gpu)
continue;
if (gpu->identity.features & chipFeatures_PIPE_2D)
cur = snprintf(engine, sizeof(engine), "2D");
if (gpu->identity.features & chipFeatures_PIPE_3D)
cur = snprintf(engine + cur, sizeof(engine) - cur,
"%s3D", cur ? "/" : "");
if (gpu->identity.nn_core_count > 0)
cur = snprintf(engine + cur, sizeof(engine) - cur,
"%sNN", cur ? "/" : "");
seq_printf(m, "drm-engine-%s:\t%llu ns\n", engine,
ctx->sched_entity[i].elapsed_ns);
}
}
static const struct file_operations fops = {
.owner = THIS_MODULE,
DRM_GEM_FOPS,
.show_fdinfo = etnaviv_fop_show_fdinfo,
};
static const struct drm_driver etnaviv_drm_driver = {
.driver_features = DRIVER_GEM | DRIVER_RENDER,