[v3,06/54] dyndbg: make ddebug_class_param union members same size

Commit Message

Jim Cromie April 2, 2025, 5:41 p.m. UTC

struct ddebug_class_param keeps a ref to the state-storage of the
param; make both class-types use the same unsigned long storage type.

ISTM this is simpler and safer; it avoids an irrelevant difference,
and if 2 users somehow get class-type mixed up (or refer to the wrong
union member), at least they will both see the same value.

Signed-off-by: Jim Cromie <[e-mail]>
Reviewed-by: Louis Chauvet <[e-mail]>
---
 include/linux/dynamic_debug.h | 2 +-
 lib/dynamic_debug.c           | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

Patch

diff --git a/include/linux/dynamic_debug.h b/include/linux/dynamic_debug.h
index ff44ec346162..b9afc7731b7c 100644
--- a/include/linux/dynamic_debug.h
+++ b/include/linux/dynamic_debug.h
@@ -124,7 +124,7 @@  struct _ddebug_info {
 struct ddebug_class_param {
 	union {
 		unsigned long *bits;
-		unsigned int *lvl;
+		unsigned long *lvl;
 	};
 	char flags[8];
 	const struct ddebug_class_map *map;
diff --git a/lib/dynamic_debug.c b/lib/dynamic_debug.c
index 147540c57154..55df35df093b 100644
--- a/lib/dynamic_debug.c
+++ b/lib/dynamic_debug.c
@@ -799,7 +799,7 @@  int param_get_dyndbg_classes(char *buffer, const struct kernel_param *kp)
 
 	case DD_CLASS_TYPE_LEVEL_NAMES:
 	case DD_CLASS_TYPE_LEVEL_NUM:
-		return scnprintf(buffer, PAGE_SIZE, "%d\n", *dcp->lvl);
+		return scnprintf(buffer, PAGE_SIZE, "%ld\n", *dcp->lvl);
 	default:
 		return -1;
 	}