Commit af6c2b7c authored by Adrián Larumbe's avatar Adrián Larumbe Committed by Boris Brezillon
Browse files

drm/file: Add fdinfo helper for printing regions with prefix 



This is motivated by the desire of some drivers (eg. Panthor) to print the
size of internal memory regions with a prefix that reflects the driver
name, as suggested in the previous documentation commit.

That means adding a new argument to print_size and making it available for
DRM users.

Cc: Tvrtko Ursulin <tursulin@ursulin.net>
Reviewed-by: default avatarTvrtko Ursulin <tvrtko.ursulin@igalia.com>
Signed-off-by: default avatarAdrián Larumbe <adrian.larumbe@collabora.com>
Signed-off-by: default avatarBoris Brezillon <boris.brezillon@collabora.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250130172851.941597-3-adrian.larumbe@collabora.com
parent 3ddf003c

drivers/gpu/drm/drm_file.c

+18 −8
Original line number Diff line number Diff line
@@ -830,8 +830,11 @@ void drm_send_event(struct drm_device *dev, struct drm_pending_event *e) 
}

EXPORT_SYMBOL(drm_send_event);



static void print_size(struct drm_printer *p, const char *stat,

		       const char *region, u64 sz)

void drm_fdinfo_print_size(struct drm_printer *p,

			   const char *prefix,

			   const char *stat,

			   const char *region,

			   u64 sz)

{

	const char *units[] = {"", " KiB", " MiB"};

	unsigned u;
@@ -842,8 +845,10 @@ static void print_size(struct drm_printer *p, const char *stat, 
		sz = div_u64(sz, SZ_1K);

	}



	drm_printf(p, "drm-%s-%s:\t%llu%s\n", stat, region, sz, units[u]);

	drm_printf(p, "%s-%s-%s:\t%llu%s\n",

		   prefix, stat, region, sz, units[u]);

}

EXPORT_SYMBOL(drm_fdinfo_print_size);



int drm_memory_stats_is_zero(const struct drm_memory_stats *stats)

{
@@ -868,17 +873,22 @@ void drm_print_memory_stats(struct drm_printer *p, 
			    enum drm_gem_object_status supported_status,

			    const char *region)

{

	print_size(p, "total", region, stats->private + stats->shared);

	print_size(p, "shared", region, stats->shared);

	const char *prefix = "drm";



	drm_fdinfo_print_size(p, prefix, "total", region,

			      stats->private + stats->shared);

	drm_fdinfo_print_size(p, prefix, "shared", region, stats->shared);



	if (supported_status & DRM_GEM_OBJECT_ACTIVE)

		print_size(p, "active", region, stats->active);

		drm_fdinfo_print_size(p, prefix, "active", region, stats->active);



	if (supported_status & DRM_GEM_OBJECT_RESIDENT)

		print_size(p, "resident", region, stats->resident);

		drm_fdinfo_print_size(p, prefix, "resident", region,

				      stats->resident);



	if (supported_status & DRM_GEM_OBJECT_PURGEABLE)

		print_size(p, "purgeable", region, stats->purgeable);

		drm_fdinfo_print_size(p, prefix, "purgeable", region,

				      stats->purgeable);

}

EXPORT_SYMBOL(drm_print_memory_stats);

include/drm/drm_file.h

+5 −0
Original line number Diff line number Diff line
@@ -495,6 +495,11 @@ struct drm_memory_stats { 
enum drm_gem_object_status;



int drm_memory_stats_is_zero(const struct drm_memory_stats *stats);

void drm_fdinfo_print_size(struct drm_printer *p,

			   const char *prefix,

			   const char *stat,

			   const char *region,

			   u64 sz);

void drm_print_memory_stats(struct drm_printer *p,

			    const struct drm_memory_stats *stats,

			    enum drm_gem_object_status supported_status,