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| author |   Anton Blanchard <anton@samba.org> | 2010-02-10 01:04:06 +0000 |
|---|---|---|
| committer |   Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2010-02-17 14:03:15 +1100 |
| commit | f10e2e5b4b4c9937de596f96ffe028be3a565598 (patch) | |
| tree | 89808d05159ac5bd4aeea53b52dc0ddb3373fe65 /arch/powerpc/include/asm/bitops.h | |
| parent | powerpc: Convert open coded native hashtable bit lock (diff) | |
| download | linux-dev-f10e2e5b4b4c9937de596f96ffe028be3a565598.tar.xz linux-dev-f10e2e5b4b4c9937de596f96ffe028be3a565598.zip | |
powerpc: Rename LWSYNC_ON_SMP to PPC_RELEASE_BARRIER, ISYNC_ON_SMP to PPC_ACQUIRE_BARRIER
For performance reasons we are about to change ISYNC_ON_SMP to sometimes be
lwsync. Now that the macro name doesn't make sense, change it and LWSYNC_ON_SMP
to better explain what the barriers are doing.
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/include/asm/bitops.h')
| -rw-r--r-- | arch/powerpc/include/asm/bitops.h | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/arch/powerpc/include/asm/bitops.h b/arch/powerpc/include/asm/bitops.h index 3c7c37bd92e3..30964ae2d096 100644 --- a/arch/powerpc/include/asm/bitops.h +++ b/arch/powerpc/include/asm/bitops.h @@ -78,7 +78,7 @@ static __inline__ void fn(unsigned long mask, \ DEFINE_BITOP(set_bits, or, "", "") DEFINE_BITOP(clear_bits, andc, "", "") -DEFINE_BITOP(clear_bits_unlock, andc, LWSYNC_ON_SMP, "") +DEFINE_BITOP(clear_bits_unlock, andc, PPC_RELEASE_BARRIER, "") DEFINE_BITOP(change_bits, xor, "", "") static __inline__ void set_bit(int nr, volatile unsigned long *addr) @@ -124,10 +124,14 @@ static __inline__ unsigned long fn( \ return (old & mask); \ } -DEFINE_TESTOP(test_and_set_bits, or, LWSYNC_ON_SMP, ISYNC_ON_SMP, 0) -DEFINE_TESTOP(test_and_set_bits_lock, or, "", ISYNC_ON_SMP, 1) -DEFINE_TESTOP(test_and_clear_bits, andc, LWSYNC_ON_SMP, ISYNC_ON_SMP, 0) -DEFINE_TESTOP(test_and_change_bits, xor, LWSYNC_ON_SMP, ISYNC_ON_SMP, 0) +DEFINE_TESTOP(test_and_set_bits, or, PPC_RELEASE_BARRIER, + PPC_ACQUIRE_BARRIER, 0) +DEFINE_TESTOP(test_and_set_bits_lock, or, "", + PPC_ACQUIRE_BARRIER, 1) +DEFINE_TESTOP(test_and_clear_bits, andc, PPC_RELEASE_BARRIER, + PPC_ACQUIRE_BARRIER, 0) +DEFINE_TESTOP(test_and_change_bits, xor, PPC_RELEASE_BARRIER, + PPC_ACQUIRE_BARRIER, 0) static __inline__ int test_and_set_bit(unsigned long nr, volatile unsigned long *addr) @@ -158,7 +162,7 @@ static __inline__ int test_and_change_bit(unsigned long nr, static __inline__ void __clear_bit_unlock(int nr, volatile unsigned long *addr) { - __asm__ __volatile__(LWSYNC_ON_SMP "" ::: "memory"); + __asm__ __volatile__(PPC_RELEASE_BARRIER "" ::: "memory"); __clear_bit(nr, addr); } |