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

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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: Tvrtko Ursulin <tvrtko.ursulin@igalia.com>
Signed-off-by: Adrián Larumbe <adrian.larumbe@collabora.com>
Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250130172851.941597-3-adrian.larumbe@collabora.com
This commit is contained in:
Adrián Larumbe 2025-01-30 17:28:10 +00:00 • committed by Jianfeng Liu
parent 25c0d76891
commit ca18fdf2f1
2 changed files with 23 additions and 8 deletions
Download patch file Download diff file Expand all files Collapse all files

26
drivers/gpu/drm/drm_file.c
View file

@ -872,8 +872,11 @@ 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;
@ -884,8 +887,10 @@ 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)
{
@ -910,17 +915,22 @@ 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);

5
include/drm/drm_file.h
View file

@ -444,6 +444,11 @@ 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,