locking/rtmutex: Prevent future include recursion hell
authorSebastian Andrzej Siewior <bigeasy@linutronix.de>
Sun, 15 Aug 2021 21:28:16 +0000 (23:28 +0200)
committerIngo Molnar <mingo@kernel.org>
Tue, 17 Aug 2021 15:27:28 +0000 (17:27 +0200)
rtmutex only needs raw_spinlock_t, but it includes spinlock_types.h, which
is not a problem on an non RT enabled kernel.

RT kernels substitute regular spinlocks with 'sleeping' spinlocks, which
are based on rtmutexes, and therefore must be able to include rtmutex.h.

Include <linux/spinlock_types_raw.h> instead.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20210815211303.428224188@linutronix.de
include/linux/rtmutex.h

index 174419ee58e9136b918152710bfc948d2dc1144a..4be97aee02bf60af40d6961de238920e10a0c4f7 100644 (file)
@@ -16,7 +16,7 @@
 #include <linux/compiler.h>
 #include <linux/linkage.h>
 #include <linux/rbtree.h>
-#include <linux/spinlock_types.h>
+#include <linux/spinlock_types_raw.h>
 
 extern int max_lock_depth; /* for sysctl */