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authorLinus Torvalds <torvalds@linux-foundation.org>2018-07-30 11:37:16 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2018-07-30 11:37:16 -0700
commitfb20c03d3748fc6991dd58a3161c0d954485c2ce (patch)
tree751c3d121f489111b54aa32793570516bd2f36db /include
parentd464b0314c79996a0a4ae9ed3b13f914052d747d (diff)
parentc0dc373a780f4ec63e45a573b9551763abd8cd1a (diff)
Merge branch 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull locking fixes from Ingo Molnar: "A paravirt UP-patching fix, and an I2C MUX driver lockdep warning fix" * 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: locking/pvqspinlock/x86: Use LOCK_PREFIX in __pv_queued_spin_unlock() assembly code i2c/mux, locking/core: Annotate the nested rt_mutex usage locking/rtmutex: Allow specifying a subclass for nested locking
Diffstat (limited to 'include')
-rw-r--r--include/linux/rtmutex.h7
1 files changed, 7 insertions, 0 deletions
diff --git a/include/linux/rtmutex.h b/include/linux/rtmutex.h
index 1b92a28dd672..6fd615a0eea9 100644
--- a/include/linux/rtmutex.h
+++ b/include/linux/rtmutex.h
@@ -106,7 +106,14 @@ static inline int rt_mutex_is_locked(struct rt_mutex *lock)
extern void __rt_mutex_init(struct rt_mutex *lock, const char *name, struct lock_class_key *key);
extern void rt_mutex_destroy(struct rt_mutex *lock);
+#ifdef CONFIG_DEBUG_LOCK_ALLOC
+extern void rt_mutex_lock_nested(struct rt_mutex *lock, unsigned int subclass);
+#define rt_mutex_lock(lock) rt_mutex_lock_nested(lock, 0)
+#else
extern void rt_mutex_lock(struct rt_mutex *lock);
+#define rt_mutex_lock_nested(lock, subclass) rt_mutex_lock(lock)
+#endif
+
extern int rt_mutex_lock_interruptible(struct rt_mutex *lock);
extern int rt_mutex_timed_lock(struct rt_mutex *lock,
struct hrtimer_sleeper *timeout);