From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Sun, 15 Aug 2021 21:28:16 +0000 (+0200)
Subject: locking/rtmutex: Prevent future include recursion hell
X-Git-Tag: accepted/tizen/unified/20230118.172025~6489^2~49
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=a403abbdc715986760821e67731d60ff65bde4bd;p=platform%2Fkernel%2Flinux-rpi.git

locking/rtmutex: Prevent future include recursion hell

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
---

diff --git a/include/linux/rtmutex.h b/include/linux/rtmutex.h
index 174419e..4be97ae 100644
--- a/include/linux/rtmutex.h
+++ b/include/linux/rtmutex.h
@@ -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 */