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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2014-06-08 11:31:16 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-06-08 11:31:16 -0700 |
| commit | 3f17ea6dea8ba5668873afa54628a91aaa3fb1c0 (patch) | |
| tree | afbeb2accd4c2199ddd705ae943995b143a0af02 /arch/tile/include/asm/barrier.h | |
| parent | 1860e379875dfe7271c649058aeddffe5afd9d0d (diff) | |
| parent | 1a5700bc2d10cd379a795fd2bb377a190af5acd4 (diff) | |
Merge branch 'next' (accumulated 3.16 merge window patches) into master
Now that 3.15 is released, this merges the 'next' branch into 'master',
bringing us to the normal situation where my 'master' branch is the
merge window.
* accumulated work in next: (6809 commits)
ufs: sb mutex merge + mutex_destroy
powerpc: update comments for generic idle conversion
cris: update comments for generic idle conversion
idle: remove cpu_idle() forward declarations
nbd: zero from and len fields in NBD_CMD_DISCONNECT.
mm: convert some level-less printks to pr_*
MAINTAINERS: adi-buildroot-devel is moderated
MAINTAINERS: add linux-api for review of API/ABI changes
mm/kmemleak-test.c: use pr_fmt for logging
fs/dlm/debug_fs.c: replace seq_printf by seq_puts
fs/dlm/lockspace.c: convert simple_str to kstr
fs/dlm/config.c: convert simple_str to kstr
mm: mark remap_file_pages() syscall as deprecated
mm: memcontrol: remove unnecessary memcg argument from soft limit functions
mm: memcontrol: clean up memcg zoneinfo lookup
mm/memblock.c: call kmemleak directly from memblock_(alloc|free)
mm/mempool.c: update the kmemleak stack trace for mempool allocations
lib/radix-tree.c: update the kmemleak stack trace for radix tree allocations
mm: introduce kmemleak_update_trace()
mm/kmemleak.c: use %u to print ->checksum
...
Diffstat (limited to 'arch/tile/include/asm/barrier.h')
| -rw-r--r-- | arch/tile/include/asm/barrier.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/arch/tile/include/asm/barrier.h b/arch/tile/include/asm/barrier.h index b5a05d050a8f..96a42ae79f4d 100644 --- a/arch/tile/include/asm/barrier.h +++ b/arch/tile/include/asm/barrier.h @@ -72,6 +72,20 @@ mb_incoherent(void) #define mb() fast_mb() #define iob() fast_iob() +#ifndef __tilegx__ /* 32 bit */ +/* + * We need to barrier before modifying the word, since the _atomic_xxx() + * routines just tns the lock and then read/modify/write of the word. + * But after the word is updated, the routine issues an "mf" before returning, + * and since it's a function call, we don't even need a compiler barrier. + */ +#define smp_mb__before_atomic() smp_mb() +#define smp_mb__after_atomic() do { } while (0) +#else /* 64 bit */ +#define smp_mb__before_atomic() smp_mb() +#define smp_mb__after_atomic() smp_mb() +#endif + #include <asm-generic/barrier.h> #endif /* !__ASSEMBLY__ */ |