This exposes a accumulated GPU active time per client via the
fdinfo infrastructure.
Signed-off-by: Lucas Stach <l.stach@xxxxxxxxxxxxxx>
---
v2:
- fix code style
- switch to raw seq_printf
- leave some breadcrumbs about the output format
---
drivers/gpu/drm/etnaviv/etnaviv_drv.c | 40 ++++++++++++++++++++++++++-
1 file changed, 39 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/etnaviv/etnaviv_drv.c b/drivers/gpu/drm/etnaviv/etnaviv_drv.c
index b69edb40ae2a..c08748472f74 100644
--- a/drivers/gpu/drm/etnaviv/etnaviv_drv.c
+++ b/drivers/gpu/drm/etnaviv/etnaviv_drv.c
@@ -22,6 +22,7 @@
#include "etnaviv_gem.h"
#include "etnaviv_mmu.h"
#include "etnaviv_perfmon.h"
+#include "common.xml.h"
/*
* DRM operations:
@@ -471,7 +472,44 @@ 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[8];
+ 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 ? "/" : "");
+
+ 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,
--
2.30.2
