locking: Simplify spinlock inlining

For !DEBUG_SPINLOCK && !PREEMPT && SMP the spin_unlock()
functions were always inlined by using special defines which
would call the __raw* functions.

The out-of-line variants for these functions would be generated
anyway.

Use the new per unlock/locking variant mechanism to force
inlining of the unlock functions like before. This is not a
functional change, we just get rid of one additional way to
force inlining.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Horst Hartmann <horsth@linux.vnet.ibm.com>
Cc: Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: David Miller <davem@davemloft.net>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Roman Zippel <zippel@linux-m68k.org>
Cc: <linux-arch@vger.kernel.org>
LKML-Reference: <20090831124418.848735034@de.ibm.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 6 insertions, 40 deletions

diff --git a/include/linux/spinlock.h b/include/linux/spinlock.h
index da76a06556bd..f0ca7a7a1757 100644
--- a/include/linux/spinlock.h
+++ b/include/linux/spinlock.h
@@ -259,50 +259,16 @@ static inline void smp_mb__after_lock(void) { smp_mb(); }
 
 #define spin_lock_irq(lock)		_spin_lock_irq(lock)
 #define spin_lock_bh(lock)		_spin_lock_bh(lock)
-
 #define read_lock_irq(lock)		_read_lock_irq(lock)
 #define read_lock_bh(lock)		_read_lock_bh(lock)
-
 #define write_lock_irq(lock)		_write_lock_irq(lock)
 #define write_lock_bh(lock)		_write_lock_bh(lock)
-
-/*
- * We inline the unlock functions in the nondebug case:
- */
-#if defined(CONFIG_DEBUG_SPINLOCK) || defined(CONFIG_PREEMPT) || \
-	!defined(CONFIG_SMP)
-# define spin_unlock(lock)		_spin_unlock(lock)
-# define read_unlock(lock)		_read_unlock(lock)
-# define write_unlock(lock)		_write_unlock(lock)
-# define spin_unlock_irq(lock)		_spin_unlock_irq(lock)
-# define read_unlock_irq(lock)		_read_unlock_irq(lock)
-# define write_unlock_irq(lock)		_write_unlock_irq(lock)
-#else
-# define spin_unlock(lock) \
-    do {__raw_spin_unlock(&(lock)->raw_lock); __release(lock); } while (0)
-# define read_unlock(lock) \
-    do {__raw_read_unlock(&(lock)->raw_lock); __release(lock); } while (0)
-# define write_unlock(lock) \
-    do {__raw_write_unlock(&(lock)->raw_lock); __release(lock); } while (0)
-# define spin_unlock_irq(lock)			\
-do {						\
-	__raw_spin_unlock(&(lock)->raw_lock);	\
-	__release(lock);			\
-	local_irq_enable();			\
-} while (0)
-# define read_unlock_irq(lock)			\
-do {						\
-	__raw_read_unlock(&(lock)->raw_lock);	\
-	__release(lock);			\
-	local_irq_enable();			\
-} while (0)
-# define write_unlock_irq(lock)			\
-do {						\
-	__raw_write_unlock(&(lock)->raw_lock);	\
-	__release(lock);			\
-	local_irq_enable();			\
-} while (0)
-#endif
+#define spin_unlock(lock)		_spin_unlock(lock)
+#define read_unlock(lock)		_read_unlock(lock)
+#define write_unlock(lock)		_write_unlock(lock)
+#define spin_unlock_irq(lock)		_spin_unlock_irq(lock)
+#define read_unlock_irq(lock)		_read_unlock_irq(lock)
+#define write_unlock_irq(lock)		_write_unlock_irq(lock)
 
 #define spin_unlock_irqrestore(lock, flags)		\
 	do {						\