The patch titled
atomic.h: add atomic64 cmpxchg, xchg and add_unless to sparc64
has been added to the -mm tree. Its filename is
atomich-add-atomic64-cmpxchg-xchg-and-add_unless-to-sparc64.patch
*** Remember to use Documentation/SubmitChecklist when testing your code ***
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: atomic.h: add atomic64 cmpxchg, xchg and add_unless to sparc64
From: Mathieu Desnoyers <mathieu.desnoyers@xxxxxxxxxx>
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@xxxxxxxxxx>
Cc: "David S. Miller" <davem@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
include/asm-sparc64/atomic.h | 25 +++++++++++++++++++++++--
1 file changed, 23 insertions(+), 2 deletions(-)
diff -puN include/asm-sparc64/atomic.h~atomich-add-atomic64-cmpxchg-xchg-and-add_unless-to-sparc64 include/asm-sparc64/atomic.h
--- a/include/asm-sparc64/atomic.h~atomich-add-atomic64-cmpxchg-xchg-and-add_unless-to-sparc64
+++ a/include/asm-sparc64/atomic.h
@@ -70,12 +70,13 @@ extern int atomic64_sub_ret(int, atomic6
#define atomic_add_negative(i, v) (atomic_add_ret(i, v) < 0)
#define atomic64_add_negative(i, v) (atomic64_add_ret(i, v) < 0)
-#define atomic_cmpxchg(v, o, n) ((int)cmpxchg(&((v)->counter), (o), (n)))
+#define atomic_cmpxchg(v, o, n) \
+ ((__typeof__((v)->counter))cmpxchg(&((v)->counter), (o), (n)))
#define atomic_xchg(v, new) (xchg(&((v)->counter), new))
#define atomic_add_unless(v, a, u) \
({ \
- int c, old; \
+ __typeof__((v)->counter) c, old; \
c = atomic_read(v); \
for (;;) { \
if (unlikely(c == (u))) \
@@ -89,6 +90,26 @@ extern int atomic64_sub_ret(int, atomic6
})
#define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0)
+#define atomic64_cmpxchg(v, o, n) \
+ ((__typeof__((v)->counter))cmpxchg(&((v)->counter), (o), (n)))
+#define atomic64_xchg(v, new) (xchg(&((v)->counter), new))
+
+#define atomic64_add_unless(v, a, u) \
+({ \
+ __typeof__((v)->counter) c, old; \
+ c = atomic64_read(v); \
+ for (;;) { \
+ if (unlikely(c == (u))) \
+ break; \
+ old = atomic64_cmpxchg((v), c, c + (a)); \
+ if (likely(old == c)) \
+ break; \
+ c = old; \
+ } \
+ likely(c != (u)); \
+})
+#define atomic64_inc_not_zero(v) atomic64_add_unless((v), 1, 0)
+
/* Atomic operations are already serializing */
#ifdef CONFIG_SMP
#define smp_mb__before_atomic_dec() membar_storeload_loadload();
_
Patches currently in -mm which might be from mathieu.desnoyers@xxxxxxxxxx are
relay-add-cpu-hotplug-support.patch
local_t-documentation.patch
local_t-documentation-fix.patch
order-of-lockdep-off-on-in-vprintk-should-be-changed.patch
minimize-lockdep_on-off-side-effect.patch
atomich-add-atomic64-cmpxchg-xchg-and-add_unless-to-alpha.patch
atomich-complete-atomic_long-operations-in-asm-generic.patch
atomich-complete-atomic_long-operations-in-asm-generic-fix.patch
atomich-i386-type-safety-fix.patch
atomich-add-atomic64-cmpxchg-xchg-and-add_unless-to-ia64.patch
atomich-add-atomic64-cmpxchg-xchg-and-add_unless-to-mips.patch
atomich-add-atomic64-cmpxchg-xchg-and-add_unless-to-parisc.patch
atomich-add-atomic64-cmpxchg-xchg-and-add_unless-to-powerpc.patch
atomich-add-atomic64-cmpxchg-xchg-and-add_unless-to-sparc64.patch
atomich-add-atomic64-cmpxchg-xchg-and-add_unless-to-x86_64.patch
local_t-architecture-independant-extension.patch
-
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