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Commit f9c4650b authored by Mathieu Desnoyers's avatar Mathieu Desnoyers Committed by Linus Torvalds
Browse files

Add cmpxchg64 and cmpxchg64_local to powerpc 



Make sure that at least cmpxchg64_local is available on all architectures to use
for unsigned long long values.

Signed-off-by: default avatarMathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
Acked-by: default avatarPaul Mackerras <paulus@samba.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 3b96a56d

include/asm-powerpc/system.h

+16 −2
Original line number Diff line number Diff line
@@ -492,6 +492,20 @@ __cmpxchg_local(volatile void *ptr, unsigned long old, unsigned long new, 
 */

#define NET_IP_ALIGN	0

#define NET_SKB_PAD	L1_CACHE_BYTES



#define cmpxchg64(ptr, o, n)						\

  ({									\

	BUILD_BUG_ON(sizeof(*(ptr)) != 8);				\

	cmpxchg((ptr), (o), (n));					\

  })

#define cmpxchg64_local(ptr, o, n)					\

  ({									\

	BUILD_BUG_ON(sizeof(*(ptr)) != 8);				\

	cmpxchg_local((ptr), (o), (n));					\

  })

#else

#include <asm-generic/cmpxchg-local.h>

#define cmpxchg64_local(ptr, o, n) __cmpxchg64_local_generic((ptr), (o), (n))

#endif



#define arch_align_stack(x) (x)