* [patch 2/8] mutex subsystem, add atomic_cmpxchg() to all arches
@ 2005-12-21 22:37 Ingo Molnar
0 siblings, 0 replies; 4+ messages in thread
From: Ingo Molnar @ 2005-12-21 22:37 UTC (permalink / raw)
To: Linus Torvalds
Cc: lkml, Andrew Morton, Arjan van de Ven, Jes Sorensen,
Zwane Mwaikambo, Oleg Nesterov, David Howells, Alan Cox,
Benjamin LaHaise, Steven Rostedt, Christoph Hellwig, Andi Kleen,
Russell King, Nicolas Pitre
add atomic_xchg() to all the architectures. Needed by the new mutex code.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
----
include/asm-alpha/atomic.h | 1 +
include/asm-arm/atomic.h | 2 ++
include/asm-arm26/atomic.h | 2 ++
include/asm-cris/atomic.h | 2 ++
include/asm-frv/atomic.h | 1 +
include/asm-h8300/atomic.h | 2 ++
include/asm-i386/atomic.h | 1 +
include/asm-ia64/atomic.h | 1 +
include/asm-m32r/atomic.h | 1 +
include/asm-m68k/atomic.h | 1 +
include/asm-m68knommu/atomic.h | 1 +
include/asm-mips/atomic.h | 1 +
include/asm-parisc/atomic.h | 1 +
include/asm-powerpc/atomic.h | 1 +
include/asm-s390/atomic.h | 1 +
include/asm-sh/atomic.h | 2 ++
include/asm-sh64/atomic.h | 2 ++
include/asm-sparc/atomic.h | 1 +
include/asm-sparc64/atomic.h | 1 +
include/asm-v850/atomic.h | 2 ++
include/asm-x86_64/atomic.h | 1 +
include/asm-xtensa/atomic.h | 1 +
22 files changed, 29 insertions(+)
Index: linux/include/asm-alpha/atomic.h
===================================================================
--- linux.orig/include/asm-alpha/atomic.h
+++ linux/include/asm-alpha/atomic.h
@@ -176,6 +176,7 @@ static __inline__ long atomic64_sub_retu
}
#define atomic_cmpxchg(v, o, n) ((int)cmpxchg(&((v)->counter), (o), (n)))
+#define atomic_xchg(v, new) (xchg(&((v)->counter), new))
#define atomic_add_unless(v, a, u) \
({ \
Index: linux/include/asm-arm/atomic.h
===================================================================
--- linux.orig/include/asm-arm/atomic.h
+++ linux/include/asm-arm/atomic.h
@@ -99,6 +99,8 @@ static inline int atomic_cmpxchg(atomic_
return oldval;
}
+#define atomic_xchg(v, new) (xchg(&((v)->counter), new))
+
static inline void atomic_clear_mask(unsigned long mask, unsigned long *addr)
{
unsigned long tmp, tmp2;
Index: linux/include/asm-arm26/atomic.h
===================================================================
--- linux.orig/include/asm-arm26/atomic.h
+++ linux/include/asm-arm26/atomic.h
@@ -76,6 +76,8 @@ static inline int atomic_cmpxchg(atomic_
return ret;
}
+#define atomic_xchg(v, new) (xchg(&((v)->counter), new))
+
static inline int atomic_add_unless(atomic_t *v, int a, int u)
{
int ret;
Index: linux/include/asm-cris/atomic.h
===================================================================
--- linux.orig/include/asm-cris/atomic.h
+++ linux/include/asm-cris/atomic.h
@@ -136,6 +136,8 @@ static inline int atomic_cmpxchg(atomic_
return ret;
}
+#define atomic_xchg(v, new) (xchg(&((v)->counter), new))
+
static inline int atomic_add_unless(atomic_t *v, int a, int u)
{
int ret;
Index: linux/include/asm-frv/atomic.h
===================================================================
--- linux.orig/include/asm-frv/atomic.h
+++ linux/include/asm-frv/atomic.h
@@ -415,6 +415,7 @@ extern uint32_t __cmpxchg_32(uint32_t *v
#endif
#define atomic_cmpxchg(v, old, new) ((int)cmpxchg(&((v)->counter), old, new))
+#define atomic_xchg(v, new) (xchg(&((v)->counter), new))
#define atomic_add_unless(v, a, u) \
({ \
Index: linux/include/asm-h8300/atomic.h
===================================================================
--- linux.orig/include/asm-h8300/atomic.h
+++ linux/include/asm-h8300/atomic.h
@@ -95,6 +95,8 @@ static inline int atomic_cmpxchg(atomic_
return ret;
}
+#define atomic_xchg(v, new) (xchg(&((v)->counter), new))
+
static inline int atomic_add_unless(atomic_t *v, int a, int u)
{
int ret;
Index: linux/include/asm-i386/atomic.h
===================================================================
--- linux.orig/include/asm-i386/atomic.h
+++ linux/include/asm-i386/atomic.h
@@ -216,6 +216,7 @@ static __inline__ int atomic_sub_return(
}
#define atomic_cmpxchg(v, old, new) ((int)cmpxchg(&((v)->counter), old, new))
+#define atomic_xchg(v, new) (xchg(&((v)->counter), new))
/**
* atomic_add_unless - add unless the number is a given value
Index: linux/include/asm-ia64/atomic.h
===================================================================
--- linux.orig/include/asm-ia64/atomic.h
+++ linux/include/asm-ia64/atomic.h
@@ -89,6 +89,7 @@ ia64_atomic64_sub (__s64 i, atomic64_t *
}
#define atomic_cmpxchg(v, old, new) ((int)cmpxchg(&((v)->counter), old, new))
+#define atomic_xchg(v, new) (xchg(&((v)->counter), new))
#define atomic_add_unless(v, a, u) \
({ \
Index: linux/include/asm-m32r/atomic.h
===================================================================
--- linux.orig/include/asm-m32r/atomic.h
+++ linux/include/asm-m32r/atomic.h
@@ -243,6 +243,7 @@ static __inline__ int atomic_dec_return(
#define atomic_add_negative(i,v) (atomic_add_return((i), (v)) < 0)
#define atomic_cmpxchg(v, o, n) ((int)cmpxchg(&((v)->counter), (o), (n)))
+#define atomic_xchg(v, new) (xchg(&((v)->counter), new))
/**
* atomic_add_unless - add unless the number is a given value
Index: linux/include/asm-m68k/atomic.h
===================================================================
--- linux.orig/include/asm-m68k/atomic.h
+++ linux/include/asm-m68k/atomic.h
@@ -140,6 +140,7 @@ static inline void atomic_set_mask(unsig
}
#define atomic_cmpxchg(v, o, n) ((int)cmpxchg(&((v)->counter), (o), (n)))
+#define atomic_xchg(v, new) (xchg(&((v)->counter), new))
#define atomic_add_unless(v, a, u) \
({ \
Index: linux/include/asm-m68knommu/atomic.h
===================================================================
--- linux.orig/include/asm-m68knommu/atomic.h
+++ linux/include/asm-m68knommu/atomic.h
@@ -129,6 +129,7 @@ static inline int atomic_sub_return(int
}
#define atomic_cmpxchg(v, o, n) ((int)cmpxchg(&((v)->counter), (o), (n)))
+#define atomic_xchg(v, new) (xchg(&((v)->counter), new))
#define atomic_add_unless(v, a, u) \
({ \
Index: linux/include/asm-mips/atomic.h
===================================================================
--- linux.orig/include/asm-mips/atomic.h
+++ linux/include/asm-mips/atomic.h
@@ -289,6 +289,7 @@ static __inline__ int atomic_sub_if_posi
}
#define atomic_cmpxchg(v, o, n) ((int)cmpxchg(&((v)->counter), (o), (n)))
+#define atomic_xchg(v, new) (xchg(&((v)->counter), new))
/**
* atomic_add_unless - add unless the number is a given value
Index: linux/include/asm-parisc/atomic.h
===================================================================
--- linux.orig/include/asm-parisc/atomic.h
+++ linux/include/asm-parisc/atomic.h
@@ -165,6 +165,7 @@ static __inline__ int atomic_read(const
/* exported interface */
#define atomic_cmpxchg(v, o, n) ((int)cmpxchg(&((v)->counter), (o), (n)))
+#define atomic_xchg(v, new) (xchg(&((v)->counter), new))
/**
* atomic_add_unless - add unless the number is a given value
Index: linux/include/asm-powerpc/atomic.h
===================================================================
--- linux.orig/include/asm-powerpc/atomic.h
+++ linux/include/asm-powerpc/atomic.h
@@ -165,6 +165,7 @@ static __inline__ int atomic_dec_return(
}
#define atomic_cmpxchg(v, o, n) ((int)cmpxchg(&((v)->counter), (o), (n)))
+#define atomic_xchg(v, new) (xchg(&((v)->counter), new))
/**
* atomic_add_unless - add unless the number is a given value
Index: linux/include/asm-s390/atomic.h
===================================================================
--- linux.orig/include/asm-s390/atomic.h
+++ linux/include/asm-s390/atomic.h
@@ -199,6 +199,7 @@ atomic_compare_and_swap(int expected_old
}
#define atomic_cmpxchg(v, o, n) (atomic_compare_and_swap((o), (n), &((v)->counter)))
+#define atomic_xchg(v, new) (xchg(&((v)->counter), new))
#define atomic_add_unless(v, a, u) \
({ \
Index: linux/include/asm-sh/atomic.h
===================================================================
--- linux.orig/include/asm-sh/atomic.h
+++ linux/include/asm-sh/atomic.h
@@ -101,6 +101,8 @@ static inline int atomic_cmpxchg(atomic_
return ret;
}
+#define atomic_xchg(v, new) (xchg(&((v)->counter), new))
+
static inline int atomic_add_unless(atomic_t *v, int a, int u)
{
int ret;
Index: linux/include/asm-sh64/atomic.h
===================================================================
--- linux.orig/include/asm-sh64/atomic.h
+++ linux/include/asm-sh64/atomic.h
@@ -113,6 +113,8 @@ static inline int atomic_cmpxchg(atomic_
return ret;
}
+#define atomic_xchg(v, new) (xchg(&((v)->counter), new))
+
static inline int atomic_add_unless(atomic_t *v, int a, int u)
{
int ret;
Index: linux/include/asm-sparc/atomic.h
===================================================================
--- linux.orig/include/asm-sparc/atomic.h
+++ linux/include/asm-sparc/atomic.h
@@ -20,6 +20,7 @@ typedef struct { volatile int counter; }
extern int __atomic_add_return(int, atomic_t *);
extern int atomic_cmpxchg(atomic_t *, int, int);
+#define atomic_xchg(v, new) (xchg(&((v)->counter), new))
extern int atomic_add_unless(atomic_t *, int, int);
extern void atomic_set(atomic_t *, int);
Index: linux/include/asm-sparc64/atomic.h
===================================================================
--- linux.orig/include/asm-sparc64/atomic.h
+++ linux/include/asm-sparc64/atomic.h
@@ -72,6 +72,7 @@ extern int atomic64_sub_ret(int, atomic6
#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_xchg(v, new) (xchg(&((v)->counter), new))
#define atomic_add_unless(v, a, u) \
({ \
Index: linux/include/asm-v850/atomic.h
===================================================================
--- linux.orig/include/asm-v850/atomic.h
+++ linux/include/asm-v850/atomic.h
@@ -104,6 +104,8 @@ static inline int atomic_cmpxchg(atomic_
return ret;
}
+#define atomic_xchg(v, new) (xchg(&((v)->counter), new))
+
static inline int atomic_add_unless(atomic_t *v, int a, int u)
{
int ret;
Index: linux/include/asm-x86_64/atomic.h
===================================================================
--- linux.orig/include/asm-x86_64/atomic.h
+++ linux/include/asm-x86_64/atomic.h
@@ -389,6 +389,7 @@ static __inline__ long atomic64_sub_retu
#define atomic64_dec_return(v) (atomic64_sub_return(1,v))
#define atomic_cmpxchg(v, old, new) ((int)cmpxchg(&((v)->counter), old, new))
+#define atomic_xchg(v, new) (xchg(&((v)->counter), new))
/**
* atomic_add_unless - add unless the number is a given value
Index: linux/include/asm-xtensa/atomic.h
===================================================================
--- linux.orig/include/asm-xtensa/atomic.h
+++ linux/include/asm-xtensa/atomic.h
@@ -224,6 +224,7 @@ static inline int atomic_sub_return(int
#define atomic_add_negative(i,v) (atomic_add_return((i),(v)) < 0)
#define atomic_cmpxchg(v, o, n) ((int)cmpxchg(&((v)->counter), (o), (n)))
+#define atomic_xchg(v, new) (xchg(&((v)->counter), new))
/**
* atomic_add_unless - add unless the number is a given value
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [patch 2/8] mutex subsystem, add atomic_cmpxchg() to all arches
2005-12-21 21:55 ` Ingo Oeser
@ 2005-12-21 22:38 ` Ingo Molnar
0 siblings, 0 replies; 4+ messages in thread
From: Ingo Molnar @ 2005-12-21 22:38 UTC (permalink / raw)
To: Ingo Oeser
Cc: linux-kernel, Linus Torvalds, Andrew Morton, Arjan van de Ven,
Jes Sorensen, Zwane Mwaikambo, Oleg Nesterov, David Howells,
Alan Cox, Benjamin LaHaise, Steven Rostedt, Christoph Hellwig,
Andi Kleen, Russell King, Nicolas Pitre
* Ingo Oeser <ioe-lkml@rameria.de> wrote:
> On Wednesday 21 December 2005 16:54, Ingo Molnar wrote:
> > add atomic_cmpxchg() to all the architectures. Needed by the new mutex code.
>
> You add atomic_xchg(), since the above exists already.
>
> Please fixup your patch description!
thanks, done.
Ingo
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [patch 2/8] mutex subsystem, add atomic_cmpxchg() to all arches
2005-12-21 15:54 Ingo Molnar
@ 2005-12-21 21:55 ` Ingo Oeser
2005-12-21 22:38 ` Ingo Molnar
0 siblings, 1 reply; 4+ messages in thread
From: Ingo Oeser @ 2005-12-21 21:55 UTC (permalink / raw)
To: linux-kernel
Cc: Ingo Molnar, Linus Torvalds, Andrew Morton, Arjan van de Ven,
Jes Sorensen, Zwane Mwaikambo, Oleg Nesterov, David Howells,
Alan Cox, Benjamin LaHaise, Steven Rostedt, Christoph Hellwig,
Andi Kleen, Russell King, Nicolas Pitre
[-- Attachment #1: Type: text/plain, Size: 709 bytes --]
On Wednesday 21 December 2005 16:54, Ingo Molnar wrote:
> add atomic_cmpxchg() to all the architectures. Needed by the new mutex code.
You add atomic_xchg(), since the above exists already.
Please fixup your patch description!
> Index: linux/include/asm-alpha/atomic.h
> ===================================================================
> --- linux.orig/include/asm-alpha/atomic.h
> +++ linux/include/asm-alpha/atomic.h
> @@ -176,6 +176,7 @@ static __inline__ long atomic64_sub_retu
> }
>
> #define atomic_cmpxchg(v, o, n) ((int)cmpxchg(&((v)->counter), (o), (n)))
> +#define atomic_xchg(v, new) (xchg(&((v)->counter), new))
^^^^^^^^^^^^^^^^^^^^^^ see?
Regards
Ingo Oeser
[-- Attachment #2: Type: application/pgp-signature, Size: 189 bytes --]
^ permalink raw reply [flat|nested] 4+ messages in thread
* [patch 2/8] mutex subsystem, add atomic_cmpxchg() to all arches
@ 2005-12-21 15:54 Ingo Molnar
2005-12-21 21:55 ` Ingo Oeser
0 siblings, 1 reply; 4+ messages in thread
From: Ingo Molnar @ 2005-12-21 15:54 UTC (permalink / raw)
To: Linus Torvalds
Cc: lkml, Andrew Morton, Arjan van de Ven, Jes Sorensen,
Zwane Mwaikambo, Oleg Nesterov, David Howells, Alan Cox,
Benjamin LaHaise, Steven Rostedt, Christoph Hellwig, Andi Kleen,
Russell King, Nicolas Pitre
add atomic_cmpxchg() to all the architectures. Needed by the new mutex code.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
----
include/asm-alpha/atomic.h | 1 +
include/asm-arm/atomic.h | 2 ++
include/asm-arm26/atomic.h | 2 ++
include/asm-cris/atomic.h | 2 ++
include/asm-frv/atomic.h | 1 +
include/asm-h8300/atomic.h | 2 ++
include/asm-i386/atomic.h | 1 +
include/asm-ia64/atomic.h | 1 +
include/asm-m32r/atomic.h | 1 +
include/asm-m68k/atomic.h | 1 +
include/asm-m68knommu/atomic.h | 1 +
include/asm-mips/atomic.h | 1 +
include/asm-parisc/atomic.h | 1 +
include/asm-powerpc/atomic.h | 1 +
include/asm-s390/atomic.h | 1 +
include/asm-sh/atomic.h | 2 ++
include/asm-sh64/atomic.h | 2 ++
include/asm-sparc/atomic.h | 1 +
include/asm-sparc64/atomic.h | 1 +
include/asm-v850/atomic.h | 2 ++
include/asm-x86_64/atomic.h | 1 +
include/asm-xtensa/atomic.h | 1 +
22 files changed, 29 insertions(+)
Index: linux/include/asm-alpha/atomic.h
===================================================================
--- linux.orig/include/asm-alpha/atomic.h
+++ linux/include/asm-alpha/atomic.h
@@ -176,6 +176,7 @@ static __inline__ long atomic64_sub_retu
}
#define atomic_cmpxchg(v, o, n) ((int)cmpxchg(&((v)->counter), (o), (n)))
+#define atomic_xchg(v, new) (xchg(&((v)->counter), new))
#define atomic_add_unless(v, a, u) \
({ \
Index: linux/include/asm-arm/atomic.h
===================================================================
--- linux.orig/include/asm-arm/atomic.h
+++ linux/include/asm-arm/atomic.h
@@ -99,6 +99,8 @@ static inline int atomic_cmpxchg(atomic_
return oldval;
}
+#define atomic_xchg(v, new) (xchg(&((v)->counter), new))
+
static inline void atomic_clear_mask(unsigned long mask, unsigned long *addr)
{
unsigned long tmp, tmp2;
Index: linux/include/asm-arm26/atomic.h
===================================================================
--- linux.orig/include/asm-arm26/atomic.h
+++ linux/include/asm-arm26/atomic.h
@@ -76,6 +76,8 @@ static inline int atomic_cmpxchg(atomic_
return ret;
}
+#define atomic_xchg(v, new) (xchg(&((v)->counter), new))
+
static inline int atomic_add_unless(atomic_t *v, int a, int u)
{
int ret;
Index: linux/include/asm-cris/atomic.h
===================================================================
--- linux.orig/include/asm-cris/atomic.h
+++ linux/include/asm-cris/atomic.h
@@ -136,6 +136,8 @@ static inline int atomic_cmpxchg(atomic_
return ret;
}
+#define atomic_xchg(v, new) (xchg(&((v)->counter), new))
+
static inline int atomic_add_unless(atomic_t *v, int a, int u)
{
int ret;
Index: linux/include/asm-frv/atomic.h
===================================================================
--- linux.orig/include/asm-frv/atomic.h
+++ linux/include/asm-frv/atomic.h
@@ -415,6 +415,7 @@ extern uint32_t __cmpxchg_32(uint32_t *v
#endif
#define atomic_cmpxchg(v, old, new) ((int)cmpxchg(&((v)->counter), old, new))
+#define atomic_xchg(v, new) (xchg(&((v)->counter), new))
#define atomic_add_unless(v, a, u) \
({ \
Index: linux/include/asm-h8300/atomic.h
===================================================================
--- linux.orig/include/asm-h8300/atomic.h
+++ linux/include/asm-h8300/atomic.h
@@ -95,6 +95,8 @@ static inline int atomic_cmpxchg(atomic_
return ret;
}
+#define atomic_xchg(v, new) (xchg(&((v)->counter), new))
+
static inline int atomic_add_unless(atomic_t *v, int a, int u)
{
int ret;
Index: linux/include/asm-i386/atomic.h
===================================================================
--- linux.orig/include/asm-i386/atomic.h
+++ linux/include/asm-i386/atomic.h
@@ -216,6 +216,7 @@ static __inline__ int atomic_sub_return(
}
#define atomic_cmpxchg(v, old, new) ((int)cmpxchg(&((v)->counter), old, new))
+#define atomic_xchg(v, new) (xchg(&((v)->counter), new))
/**
* atomic_add_unless - add unless the number is a given value
Index: linux/include/asm-ia64/atomic.h
===================================================================
--- linux.orig/include/asm-ia64/atomic.h
+++ linux/include/asm-ia64/atomic.h
@@ -89,6 +89,7 @@ ia64_atomic64_sub (__s64 i, atomic64_t *
}
#define atomic_cmpxchg(v, old, new) ((int)cmpxchg(&((v)->counter), old, new))
+#define atomic_xchg(v, new) (xchg(&((v)->counter), new))
#define atomic_add_unless(v, a, u) \
({ \
Index: linux/include/asm-m32r/atomic.h
===================================================================
--- linux.orig/include/asm-m32r/atomic.h
+++ linux/include/asm-m32r/atomic.h
@@ -243,6 +243,7 @@ static __inline__ int atomic_dec_return(
#define atomic_add_negative(i,v) (atomic_add_return((i), (v)) < 0)
#define atomic_cmpxchg(v, o, n) ((int)cmpxchg(&((v)->counter), (o), (n)))
+#define atomic_xchg(v, new) (xchg(&((v)->counter), new))
/**
* atomic_add_unless - add unless the number is a given value
Index: linux/include/asm-m68k/atomic.h
===================================================================
--- linux.orig/include/asm-m68k/atomic.h
+++ linux/include/asm-m68k/atomic.h
@@ -140,6 +140,7 @@ static inline void atomic_set_mask(unsig
}
#define atomic_cmpxchg(v, o, n) ((int)cmpxchg(&((v)->counter), (o), (n)))
+#define atomic_xchg(v, new) (xchg(&((v)->counter), new))
#define atomic_add_unless(v, a, u) \
({ \
Index: linux/include/asm-m68knommu/atomic.h
===================================================================
--- linux.orig/include/asm-m68knommu/atomic.h
+++ linux/include/asm-m68knommu/atomic.h
@@ -129,6 +129,7 @@ static inline int atomic_sub_return(int
}
#define atomic_cmpxchg(v, o, n) ((int)cmpxchg(&((v)->counter), (o), (n)))
+#define atomic_xchg(v, new) (xchg(&((v)->counter), new))
#define atomic_add_unless(v, a, u) \
({ \
Index: linux/include/asm-mips/atomic.h
===================================================================
--- linux.orig/include/asm-mips/atomic.h
+++ linux/include/asm-mips/atomic.h
@@ -289,6 +289,7 @@ static __inline__ int atomic_sub_if_posi
}
#define atomic_cmpxchg(v, o, n) ((int)cmpxchg(&((v)->counter), (o), (n)))
+#define atomic_xchg(v, new) (xchg(&((v)->counter), new))
/**
* atomic_add_unless - add unless the number is a given value
Index: linux/include/asm-parisc/atomic.h
===================================================================
--- linux.orig/include/asm-parisc/atomic.h
+++ linux/include/asm-parisc/atomic.h
@@ -165,6 +165,7 @@ static __inline__ int atomic_read(const
/* exported interface */
#define atomic_cmpxchg(v, o, n) ((int)cmpxchg(&((v)->counter), (o), (n)))
+#define atomic_xchg(v, new) (xchg(&((v)->counter), new))
/**
* atomic_add_unless - add unless the number is a given value
Index: linux/include/asm-powerpc/atomic.h
===================================================================
--- linux.orig/include/asm-powerpc/atomic.h
+++ linux/include/asm-powerpc/atomic.h
@@ -165,6 +165,7 @@ static __inline__ int atomic_dec_return(
}
#define atomic_cmpxchg(v, o, n) ((int)cmpxchg(&((v)->counter), (o), (n)))
+#define atomic_xchg(v, new) (xchg(&((v)->counter), new))
/**
* atomic_add_unless - add unless the number is a given value
Index: linux/include/asm-s390/atomic.h
===================================================================
--- linux.orig/include/asm-s390/atomic.h
+++ linux/include/asm-s390/atomic.h
@@ -199,6 +199,7 @@ atomic_compare_and_swap(int expected_old
}
#define atomic_cmpxchg(v, o, n) (atomic_compare_and_swap((o), (n), &((v)->counter)))
+#define atomic_xchg(v, new) (xchg(&((v)->counter), new))
#define atomic_add_unless(v, a, u) \
({ \
Index: linux/include/asm-sh/atomic.h
===================================================================
--- linux.orig/include/asm-sh/atomic.h
+++ linux/include/asm-sh/atomic.h
@@ -101,6 +101,8 @@ static inline int atomic_cmpxchg(atomic_
return ret;
}
+#define atomic_xchg(v, new) (xchg(&((v)->counter), new))
+
static inline int atomic_add_unless(atomic_t *v, int a, int u)
{
int ret;
Index: linux/include/asm-sh64/atomic.h
===================================================================
--- linux.orig/include/asm-sh64/atomic.h
+++ linux/include/asm-sh64/atomic.h
@@ -113,6 +113,8 @@ static inline int atomic_cmpxchg(atomic_
return ret;
}
+#define atomic_xchg(v, new) (xchg(&((v)->counter), new))
+
static inline int atomic_add_unless(atomic_t *v, int a, int u)
{
int ret;
Index: linux/include/asm-sparc/atomic.h
===================================================================
--- linux.orig/include/asm-sparc/atomic.h
+++ linux/include/asm-sparc/atomic.h
@@ -20,6 +20,7 @@ typedef struct { volatile int counter; }
extern int __atomic_add_return(int, atomic_t *);
extern int atomic_cmpxchg(atomic_t *, int, int);
+#define atomic_xchg(v, new) (xchg(&((v)->counter), new))
extern int atomic_add_unless(atomic_t *, int, int);
extern void atomic_set(atomic_t *, int);
Index: linux/include/asm-sparc64/atomic.h
===================================================================
--- linux.orig/include/asm-sparc64/atomic.h
+++ linux/include/asm-sparc64/atomic.h
@@ -72,6 +72,7 @@ extern int atomic64_sub_ret(int, atomic6
#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_xchg(v, new) (xchg(&((v)->counter), new))
#define atomic_add_unless(v, a, u) \
({ \
Index: linux/include/asm-v850/atomic.h
===================================================================
--- linux.orig/include/asm-v850/atomic.h
+++ linux/include/asm-v850/atomic.h
@@ -104,6 +104,8 @@ static inline int atomic_cmpxchg(atomic_
return ret;
}
+#define atomic_xchg(v, new) (xchg(&((v)->counter), new))
+
static inline int atomic_add_unless(atomic_t *v, int a, int u)
{
int ret;
Index: linux/include/asm-x86_64/atomic.h
===================================================================
--- linux.orig/include/asm-x86_64/atomic.h
+++ linux/include/asm-x86_64/atomic.h
@@ -389,6 +389,7 @@ static __inline__ long atomic64_sub_retu
#define atomic64_dec_return(v) (atomic64_sub_return(1,v))
#define atomic_cmpxchg(v, old, new) ((int)cmpxchg(&((v)->counter), old, new))
+#define atomic_xchg(v, new) (xchg(&((v)->counter), new))
/**
* atomic_add_unless - add unless the number is a given value
Index: linux/include/asm-xtensa/atomic.h
===================================================================
--- linux.orig/include/asm-xtensa/atomic.h
+++ linux/include/asm-xtensa/atomic.h
@@ -224,6 +224,7 @@ static inline int atomic_sub_return(int
#define atomic_add_negative(i,v) (atomic_add_return((i),(v)) < 0)
#define atomic_cmpxchg(v, o, n) ((int)cmpxchg(&((v)->counter), (o), (n)))
+#define atomic_xchg(v, new) (xchg(&((v)->counter), new))
/**
* atomic_add_unless - add unless the number is a given value
^ permalink raw reply [flat|nested] 4+ messages in thread
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2005-12-21 22:37 [patch 2/8] mutex subsystem, add atomic_cmpxchg() to all arches Ingo Molnar
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2005-12-21 15:54 Ingo Molnar
2005-12-21 21:55 ` Ingo Oeser
2005-12-21 22:38 ` Ingo Molnar
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