[patch V4 27/68] locking/rtmutex: Include only rbtree types

From: Thomas Gleixner
Date: Wed Aug 11 2021 - 08:24:29 EST

From: Sebastian Andrzej Siewior <bigeasy@xxxxxxxxxxxxx>

rtmutex.h needs the definition of struct rb_root_cached. rbtree.h includes
kernel.h which includes spinlock.h. That works nicely for non-RT enabled
kernels, but on RT enabled kernels spinlocks are based on rtmutexes which
creates another circular header dependency as spinlocks.h will require

Include rbtree_types.h instead.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@xxxxxxxxxxxxx>
Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
include/linux/rtmutex.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/include/linux/rtmutex.h
+++ b/include/linux/rtmutex.h
@@ -14,7 +14,7 @@
#define __LINUX_RT_MUTEX_H

#include <linux/linkage.h>
-#include <linux/rbtree.h>
+#include <linux/rbtree_types.h>
#include <linux/spinlock_types_raw.h>

extern int max_lock_depth; /* for sysctl */