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authorLinus Torvalds <torvalds@linux-foundation.org>2011-07-22 15:07:35 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2011-07-22 15:07:35 -0700
commit17413f5acd03224bcd09eefc5c4088894e832cad (patch)
tree9912a2a6fc13ce7e081d4b25e0051f0fb245c099 /arch/x86/include/asm
parent5a791ea4fa4495f7136679cb5366f6544148e613 (diff)
parent688d3be815b1563b1484ce67702249a4a7a6314e (diff)
Merge branch 'for-3.1' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu
* 'for-3.1' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu: percpu: Fixup __this_cpu_xchg* operations
Diffstat (limited to 'arch/x86/include/asm')
-rw-r--r--arch/x86/include/asm/percpu.h11
1 files changed, 5 insertions, 6 deletions
diff --git a/arch/x86/include/asm/percpu.h b/arch/x86/include/asm/percpu.h
index a0a9779084d1..3470c9d0ebba 100644
--- a/arch/x86/include/asm/percpu.h
+++ b/arch/x86/include/asm/percpu.h
@@ -388,12 +388,9 @@ do { \
#define __this_cpu_xor_1(pcp, val) percpu_to_op("xor", (pcp), val)
#define __this_cpu_xor_2(pcp, val) percpu_to_op("xor", (pcp), val)
#define __this_cpu_xor_4(pcp, val) percpu_to_op("xor", (pcp), val)
-/*
- * Generic fallback operations for __this_cpu_xchg_[1-4] are okay and much
- * faster than an xchg with forced lock semantics.
- */
-#define __this_cpu_xchg_8(pcp, nval) percpu_xchg_op(pcp, nval)
-#define __this_cpu_cmpxchg_8(pcp, oval, nval) percpu_cmpxchg_op(pcp, oval, nval)
+#define __this_cpu_xchg_1(pcp, val) percpu_xchg_op(pcp, val)
+#define __this_cpu_xchg_2(pcp, val) percpu_xchg_op(pcp, val)
+#define __this_cpu_xchg_4(pcp, val) percpu_xchg_op(pcp, val)
#define this_cpu_read_1(pcp) percpu_from_op("mov", (pcp), "m"(pcp))
#define this_cpu_read_2(pcp) percpu_from_op("mov", (pcp), "m"(pcp))
@@ -485,6 +482,8 @@ do { \
#define __this_cpu_or_8(pcp, val) percpu_to_op("or", (pcp), val)
#define __this_cpu_xor_8(pcp, val) percpu_to_op("xor", (pcp), val)
#define __this_cpu_add_return_8(pcp, val) percpu_add_return_op(pcp, val)
+#define __this_cpu_xchg_8(pcp, nval) percpu_xchg_op(pcp, nval)
+#define __this_cpu_cmpxchg_8(pcp, oval, nval) percpu_cmpxchg_op(pcp, oval, nval)
#define this_cpu_read_8(pcp) percpu_from_op("mov", (pcp), "m"(pcp))
#define this_cpu_write_8(pcp, val) percpu_to_op("mov", (pcp), val)

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