The patch titled
Add cmpxchg_local, cmpxchg64 and cmpxchg64_local to ia64
has been removed from the -mm tree. Its filename was
add-cmpxchg_local-cmpxchg64-and-cmpxchg64_local-to-ia64.patch
This patch was dropped because an updated version will be merged
------------------------------------------------------
Subject: Add cmpxchg_local, cmpxchg64 and cmpxchg64_local to ia64
From: Mathieu Desnoyers <mathieu.desnoyers@xxxxxxxxxx>
Add the primitives cmpxchg_local, cmpxchg64 and cmpxchg64_local to ia64. They
use cmpxchg_acq as underlying macro, just like the already existing ia64
cmpxchg().
Changelog:
ia64 cmpxchg_local coding style fix
Quoting Keith Owens:
As a matter of coding style, I prefer
#define cmpxchg_local cmpxchg
#define cmpxchg64_local cmpxchg64
Which makes it absolutely clear that they are the same code. With your
patch, humans have to do a string compare of two defines to see if they
are the same.
Note cmpxchg is *not* a performance win vs interrupt disable / enable on IA64.
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@xxxxxxxxxx>
Acked-by: Christoph Lameter <clameter@xxxxxxx>
Cc: Keith Owens <kaos@xxxxxxxxxx>
Cc: "Luck, Tony" <tony.luck@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/asm-ia64/intrinsics.h | 4 ++++
1 file changed, 4 insertions(+)
diff -puN include/asm-ia64/intrinsics.h~add-cmpxchg_local-cmpxchg64-and-cmpxchg64_local-to-ia64 include/asm-ia64/intrinsics.h
--- a/include/asm-ia64/intrinsics.h~add-cmpxchg_local-cmpxchg64-and-cmpxchg64_local-to-ia64
+++ a/include/asm-ia64/intrinsics.h
@@ -158,6 +158,10 @@ extern long ia64_cmpxchg_called_with_bad
/* for compatibility with other platforms: */
#define cmpxchg(ptr,o,n) cmpxchg_acq(ptr,o,n)
+#define cmpxchg64(ptr,o,n) cmpxchg_acq(ptr,o,n)
+
+#define cmpxchg_local cmpxchg
+#define cmpxchg64_local cmpxchg64
#ifdef CONFIG_IA64_DEBUG_CMPXCHG
# define CMPXCHG_BUGCHECK_DECL int _cmpxchg_bugcheck_count = 128;
_
Patches currently in -mm which might be from mathieu.desnoyers@xxxxxxxxxx are
local_t-documentation-update-2.patch
markers-fix-warnings.patch
add-cmpxchg_local-cmpxchg64-and-cmpxchg64_local-to-ia64.patch
new-cmpxchg_local-optimized-for-up-case-for-m32r.patch
fix-m32r-__xchg.patch
m32r-build-fix-of-arch-m32r-kernel-smpbootc.patch
local_t-m32r-use-architecture-specific-cmpxchg_local.patch
add-cmpxchg_local-to-m86k.patch
add-cmpxchg_local-to-m68knommu.patch
add-cmpxchg_local-to-parisc.patch
add-cmpxchg_local-to-ppc.patch
add-cmpxchg_local-to-s390.patch
add-cmpxchg_local-to-sh-use-generic-cmpxchg-instead-of-cmpxchg_u32.patch
add-cmpxchg_local-to-sh64.patch
add-cmpxchg_local-to-sparc-move-__cmpxchg-to-systemh.patch
add-cmpxchg_local-to-sparc64.patch
add-cmpxchg_local-to-v850.patch
add-cmpxchg_local-to-xtensa.patch
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