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| author | Christoph Lameter <clameter@sgi.com> | 2007-12-18 16:22:46 -0800 |
|---|---|---|
| committer | Tony Luck <tony.luck@intel.com> | 2007-12-18 16:22:46 -0800 |
| commit | a3ebdb6c423dff420168a3faf25c76e9e5f59258 (patch) | |
| tree | 397317fda83da7f745d802d5ba87735f163bf1c9 /include/asm-ia64/intel_intrin.h | |
| parent | c63a1190368771b8207d86c4217ae4afdf1cbd5e (diff) | |
| download | kernel_samsung_smdk4412-a3ebdb6c423dff420168a3faf25c76e9e5f59258.zip kernel_samsung_smdk4412-a3ebdb6c423dff420168a3faf25c76e9e5f59258.tar.gz kernel_samsung_smdk4412-a3ebdb6c423dff420168a3faf25c76e9e5f59258.tar.bz2 | |
IA64: Slim down __clear_bit_unlock
__clear_bit_unlock does not need to perform atomic operations on the
variable. Avoid a cmpxchg and simply do a store with release semantics.
Add a barrier to be safe that the compiler does not do funky things.
Tony: Use intrinsic rather than inline assembler
Signed-off-by: Christoph Lameter <clameter@sgi.com>
Acked-by: Nick Piggin <nickpiggin@yahoo.com.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Diffstat (limited to 'include/asm-ia64/intel_intrin.h')
| -rw-r--r-- | include/asm-ia64/intel_intrin.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/asm-ia64/intel_intrin.h b/include/asm-ia64/intel_intrin.h index d069b6a..a520d10 100644 --- a/include/asm-ia64/intel_intrin.h +++ b/include/asm-ia64/intel_intrin.h @@ -110,6 +110,9 @@ #define ia64_st4_rel __st4_rel #define ia64_st8_rel __st8_rel +/* FIXME: need st4.rel.nta intrinsic */ +#define ia64_st4_rel_nta __st4_rel + #define ia64_ld1_acq __ld1_acq #define ia64_ld2_acq __ld2_acq #define ia64_ld4_acq __ld4_acq |