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drm/lima: add show_fdinfo for drm usage stats

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This exposes an accumulated active time per client via the fdinfo
infrastructure per execution engine, following
Documentation/gpu/drm-usage-stats.rst.
In lima, the exposed execution engines are gp and pp.

Signed-off-by: Erico Nunes <nunes.erico@gmail.com>
Signed-off-by: Qiang Yu <yuq825@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230312233052.21095-4-nunes.erico@gmail.com
This commit is contained in:
Erico Nunes 2023-03-13 00:30:52 +01:00 committed by Qiang Yu
parent 87767de835
commit 4a66f3da99
1 changed files with 30 additions and 1 deletions
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31
drivers/gpu/drm/lima/lima_drv.c
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@ -261,7 +261,36 @@ static const struct drm_ioctl_desc lima_drm_driver_ioctls[] = {
DRM_IOCTL_DEF_DRV(LIMA_CTX_FREE, lima_ioctl_ctx_free, DRM_RENDER_ALLOW),
};
DEFINE_DRM_GEM_FOPS(lima_drm_driver_fops);
static void lima_drm_driver_show_fdinfo(struct seq_file *m, struct file *filp)
{
struct drm_file *file = filp->private_data;
struct drm_device *dev = file->minor->dev;
struct lima_device *ldev = to_lima_dev(dev);
struct lima_drm_priv *priv = file->driver_priv;
struct lima_ctx_mgr *ctx_mgr = &priv->ctx_mgr;
u64 usage[lima_pipe_num];
lima_ctx_mgr_usage(ctx_mgr, usage);
/*
* 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", priv->id);
for (int i = 0; i < lima_pipe_num; i++) {
struct lima_sched_pipe *pipe = &ldev->pipe[i];
struct drm_gpu_scheduler *sched = &pipe->base;
seq_printf(m, "drm-engine-%s:\t%llu ns\n", sched->name, usage[i]);
}
}
static const struct file_operations lima_drm_driver_fops = {
.owner = THIS_MODULE,
DRM_GEM_FOPS,
.show_fdinfo = lima_drm_driver_show_fdinfo,
};
/*
* Changelog: