From: Adrián Larumbe <adrian.larumbe@collabora.com>
Date: Thu, 30 Jan 2025 17:28:10 +0000 (+0000)
Subject: drm/file: Add fdinfo helper for printing regions with prefix
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=af6c2b7c46e16701fba44a21326cb634786e3e71;p=users%2Fjedix%2Flinux-maple.git

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: 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
---

diff --git a/drivers/gpu/drm/drm_file.c b/drivers/gpu/drm/drm_file.c
index 2289e71e2fa2..c299cd94d3f7 100644
--- a/drivers/gpu/drm/drm_file.c
+++ b/drivers/gpu/drm/drm_file.c
@@ -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);
 
diff --git a/include/drm/drm_file.h b/include/drm/drm_file.h
index ef817926cddd..94d365b22505 100644
--- a/include/drm/drm_file.h
+++ b/include/drm/drm_file.h
@@ -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,