The patch titled
Subject: mutex: use spin_[un]lock instead of arch_spin_[un]lock
has been added to the -mm tree. Its filename is
mutex-use-spin_lock-instead-of-arch_spin_lock.patch
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------------------------------------------------------
From: Yuanhan Liu <yuanhan.liu@xxxxxxxxxxxxxxx>
Subject: mutex: use spin_[un]lock instead of arch_spin_[un]lock
Use spin_[un]lock instead of arch_spin_[un]lock in mutex-debug.h so
that we can collect the lock statistics of spin_lock_mutex from
/proc/lock_stat.
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Signed-off-by: Yuanhan Liu <yuanhan.liu@xxxxxxxxxxxxxxx>
---
index 0799fd3..556c0bc 100644
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
kernel/mutex-debug.h | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff -puN kernel/mutex-debug.h~mutex-use-spin_lock-instead-of-arch_spin_lock kernel/mutex-debug.h
--- a/kernel/mutex-debug.h~mutex-use-spin_lock-instead-of-arch_spin_lock
+++ a/kernel/mutex-debug.h
@@ -43,13 +43,13 @@ static inline void mutex_clear_owner(str
\
DEBUG_LOCKS_WARN_ON(in_interrupt()); \
local_irq_save(flags); \
- arch_spin_lock(&(lock)->rlock.raw_lock);\
+ spin_lock(lock); \
DEBUG_LOCKS_WARN_ON(l->magic != l); \
} while (0)
#define spin_unlock_mutex(lock, flags) \
do { \
- arch_spin_unlock(&(lock)->rlock.raw_lock); \
+ spin_unlock(lock); \
local_irq_restore(flags); \
preempt_check_resched(); \
} while (0)
_
Patches currently in -mm which might be from yuanhan.liu@xxxxxxxxxxxxxxx are
mm-fix-wrong-comments-about-anon_vma-lock.patch
lockstat-fix-a-typo.patch
fs-execc-make-bprm_mm_init-static.patch
mutex-use-spin_lock-instead-of-arch_spin_lock.patch
mutex-use-spin_lock-instead-of-arch_spin_lock-fix.patch
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