Commit 97804a13 authored by Lucas Stach's avatar Lucas Stach
Browse files

drm/etnaviv: export client GPU usage statistics via fdinfo 



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

Signed-off-by: default avatarLucas Stach <l.stach@pengutronix.de>
Reviewed-by: default avatarPhilipp Zabel <p.zabel@pengutronix.de>
parent d306788b

drivers/gpu/drm/etnaviv/etnaviv_drv.c

+42 −1
Original line number Diff line number Diff line
@@ -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,