- add-cmpxchg_local-to-xtensa.patch removed from -mm tree

[akpm@linux-foundation.org]

The patch titled
     Add cmpxchg_local to xtensa
has been removed from the -mm tree.  Its filename was
     add-cmpxchg_local-to-xtensa.patch

This patch was dropped because an updated version will be merged

------------------------------------------------------
Subject: Add cmpxchg_local to xtensa
From: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>

Use the architecture specific __cmpxchg_u32 for 32 bits cmpxchg)_local.  Else,
use the new generic cmpxchg_local (disables interrupt).

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
Cc: Christian Zankel <chris@zankel.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 include/asm-xtensa/system.h |   22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff -puN include/asm-xtensa/system.h~add-cmpxchg_local-to-xtensa include/asm-xtensa/system.h
--- a/include/asm-xtensa/system.h~add-cmpxchg_local-to-xtensa
+++ a/include/asm-xtensa/system.h
@@ -156,8 +156,30 @@ __cmpxchg(volatile void *ptr, unsigned l
 	   			        (unsigned long)_n_, sizeof (*(ptr))); \
 	})
 
+#include <asm-generic/cmpxchg-local.h>
 
+static inline unsigned long __cmpxchg_local(volatile void *ptr,
+				      unsigned long old,
+				      unsigned long new, int size)
+{
+	switch (size) {
+	case 4:
+		return __cmpxchg_u32(ptr, old, new);
+	default:
+		return __cmpxchg_local_generic(ptr, old, new, size);
+	}
 
+	return old;
+}
+
+/*
+ * cmpxchg_local and cmpxchg64_local are atomic wrt current CPU. Always make
+ * them available.
+ */
+#define cmpxchg_local(ptr,o,n)					  	    \
+     (__typeof__(*(ptr)))__cmpxchg_local_generic((ptr), (unsigned long)(o), \
+			   	 (unsigned long)(n), sizeof(*(ptr)))
+#define cmpxchg64_local(ptr,o,n) __cmpxchg64_local_generic((ptr), (o), (n))
 
 /*
  * xchg_u32
_

Patches currently in -mm which might be from mathieu.desnoyers@polymtl.ca are

local_t-documentation-update-2.patch
markers-fix-warnings.patch
add-cmpxchg_local-to-xtensa.patch