[patch V4 35/68] locking/mutex: Move waiter to core header

Thomas Gleixner
2021-08-11T12:25:24Z

Move the mutex waiter declaration from the global to the core local
header. There is no reason to expose it outside of the core code.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
include/linux/mutex.h | 13 -------------
kernel/locking/mutex.h | 13 +++++++++++++
2 files changed, 13 insertions(+), 13 deletions(-)
---
--- a/include/linux/mutex.h
+++ b/include/linux/mutex.h
@@ -74,19 +74,6 @@ struct ww_mutex {
#endif
};

-/*
- * This is the control structure for tasks blocked on mutex,
- * which resides on the blocked task's kernel stack:
- */
-struct mutex_waiter {
- struct list_head list;
- struct task_struct *task;
- struct ww_acquire_ctx *ww_ctx;
-#ifdef CONFIG_DEBUG_MUTEXES
- void *magic;
-#endif
-};
-
#ifdef CONFIG_DEBUG_MUTEXES

#define __DEBUG_MUTEX_INITIALIZER(lockname) \
--- a/kernel/locking/mutex.h
+++ b/kernel/locking/mutex.h
@@ -7,6 +7,19 @@
* Copyright (C) 2004, 2005, 2006 Red Hat, Inc., Ingo Molnar <mingo@redhat.com>
*/

+/*
+ * This is the control structure for tasks blocked on mutex, which resides
+ * on the blocked task's kernel stack:
+ */
+struct mutex_waiter {
+ struct list_head list;
+ struct task_struct *task;
+ struct ww_acquire_ctx *ww_ctx;
+#ifdef CONFIG_DEBUG_MUTEXES
+ void *magic;
+#endif
+};
+
#ifdef CONFIG_DEBUG_MUTEXES
extern void debug_mutex_lock_common(struct mutex *lock,
struct mutex_waiter *waiter);