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authorLinus Torvalds <torvalds@linux-foundation.org>2014-06-03 23:57:53 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2014-06-03 23:57:53 +0400
commit776edb59317ada867dfcddde40b55648beeb0078 (patch)
treef6a6136374642323cfefd7d6399ea429f9018ade /arch/blackfin
parent59a3d4c3631e553357b7305dc09db1990aa6757c (diff)
parent3cf2f34e1a3d4d5ff209d087925cf950e52f4805 (diff)
downloadlinux-776edb59317ada867dfcddde40b55648beeb0078.tar.xz
Merge branch 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip into next
Pull core locking updates from Ingo Molnar: "The main changes in this cycle were: - reduced/streamlined smp_mb__*() interface that allows more usecases and makes the existing ones less buggy, especially in rarer architectures - add rwsem implementation comments - bump up lockdep limits" * 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (33 commits) rwsem: Add comments to explain the meaning of the rwsem's count field lockdep: Increase static allocations arch: Mass conversion of smp_mb__*() arch,doc: Convert smp_mb__*() arch,xtensa: Convert smp_mb__*() arch,x86: Convert smp_mb__*() arch,tile: Convert smp_mb__*() arch,sparc: Convert smp_mb__*() arch,sh: Convert smp_mb__*() arch,score: Convert smp_mb__*() arch,s390: Convert smp_mb__*() arch,powerpc: Convert smp_mb__*() arch,parisc: Convert smp_mb__*() arch,openrisc: Convert smp_mb__*() arch,mn10300: Convert smp_mb__*() arch,mips: Convert smp_mb__*() arch,metag: Convert smp_mb__*() arch,m68k: Convert smp_mb__*() arch,m32r: Convert smp_mb__*() arch,ia64: Convert smp_mb__*() ...
Diffstat (limited to 'arch/blackfin')
-rw-r--r--arch/blackfin/include/asm/barrier.h3
-rw-r--r--arch/blackfin/include/asm/bitops.h14
2 files changed, 5 insertions, 12 deletions
diff --git a/arch/blackfin/include/asm/barrier.h b/arch/blackfin/include/asm/barrier.h
index 19283a16ac08..420006877998 100644
--- a/arch/blackfin/include/asm/barrier.h
+++ b/arch/blackfin/include/asm/barrier.h
@@ -27,6 +27,9 @@
#endif /* !CONFIG_SMP */
+#define smp_mb__before_atomic() barrier()
+#define smp_mb__after_atomic() barrier()
+
#include <asm-generic/barrier.h>
#endif /* _BLACKFIN_BARRIER_H */
diff --git a/arch/blackfin/include/asm/bitops.h b/arch/blackfin/include/asm/bitops.h
index 0ca40dd44724..b298b654a26f 100644
--- a/arch/blackfin/include/asm/bitops.h
+++ b/arch/blackfin/include/asm/bitops.h
@@ -27,21 +27,17 @@
#include <asm-generic/bitops/ext2-atomic.h>
+#include <asm/barrier.h>
+
#ifndef CONFIG_SMP
#include <linux/irqflags.h>
-
/*
* clear_bit may not imply a memory barrier
*/
-#ifndef smp_mb__before_clear_bit
-#define smp_mb__before_clear_bit() smp_mb()
-#define smp_mb__after_clear_bit() smp_mb()
-#endif
#include <asm-generic/bitops/atomic.h>
#include <asm-generic/bitops/non-atomic.h>
#else
-#include <asm/barrier.h>
#include <asm/byteorder.h> /* swab32 */
#include <linux/linkage.h>
@@ -101,12 +97,6 @@ static inline int test_and_change_bit(int nr, volatile unsigned long *addr)
return __raw_bit_test_toggle_asm(a, nr & 0x1f);
}
-/*
- * clear_bit() doesn't provide any barrier for the compiler.
- */
-#define smp_mb__before_clear_bit() barrier()
-#define smp_mb__after_clear_bit() barrier()
-
#define test_bit __skip_test_bit
#include <asm-generic/bitops/non-atomic.h>
#undef test_bit