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authorChristoph Lameter <clameter@sgi.com>2007-12-18 16:22:46 -0800
committerTony Luck <tony.luck@intel.com>2007-12-18 16:22:46 -0800
commita3ebdb6c423dff420168a3faf25c76e9e5f59258 (patch)
tree397317fda83da7f745d802d5ba87735f163bf1c9 /include/asm-ia64/intel_intrin.h
parentc63a1190368771b8207d86c4217ae4afdf1cbd5e (diff)
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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.h3
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