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Merge branch 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip into next

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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__*()
  ...
This commit is contained in:
Linus Torvalds
2014-06-03 12:57:53 -07:00
parent 59a3d4c363 3cf2f34e1a
commit 776edb5931
185 changed files with 549 additions and 650 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
arch/sh/include/asm/atomic.h
View File

@@ -10,6 +10,7 @@
#include <linux/compiler.h>
#include <linux/types.h>
#include <asm/cmpxchg.h>
#include <asm/barrier.h>
#define ATOMIC_INIT(i) { (i) }
@@ -62,9 +63,4 @@ static inline int __atomic_add_unless(atomic_t *v, int a, int u)
return c;
}
#define smp_mb__before_atomic_dec() smp_mb()
#define smp_mb__after_atomic_dec() smp_mb()
#define smp_mb__before_atomic_inc() smp_mb()
#define smp_mb__after_atomic_inc() smp_mb()
#endif /* __ASM_SH_ATOMIC_H */

7
arch/sh/include/asm/bitops.h
View File

@@ -9,6 +9,7 @@
/* For __swab32 */
#include <asm/byteorder.h>
#include <asm/barrier.h>
#ifdef CONFIG_GUSA_RB
#include <asm/bitops-grb.h>
@@ -22,12 +23,6 @@
#include <asm-generic/bitops/non-atomic.h>
#endif
/*
* clear_bit() doesn't provide any barrier for the compiler.
*/
#define smp_mb__before_clear_bit() smp_mb()
#define smp_mb__after_clear_bit() smp_mb()
#ifdef CONFIG_SUPERH32
static inline unsigned long ffz(unsigned long word)
{