From 2856f5e31c1413bf6e4f1371e07e17078a5fee5e Mon Sep 17 00:00:00 2001 From: Mathieu Desnoyers Date: Tue, 8 May 2007 00:34:38 -0700 Subject: atomic.h: atomic_add_unless as inline. Remove system.h atomic.h circular dependency atomic_add_unless as inline. Remove system.h atomic.h circular dependency. I agree (with Andi Kleen) this typeof is not needed and more error prone. All the original atomic.h code that uses cmpxchg (which includes the atomic_add_unless) uses defines instead of inline functions, probably to circumvent a circular dependency between system.h and atomic.h on powerpc (which my patch addresses). Therefore, it makes sense to use inline functions that will provide type checking. atomic_add_unless as inline. Remove system.h atomic.h circular dependency. Digging into the FRV architecture shows me that it is also affected by such a circular dependency. Here is the diff applying this against the rest of my atomic.h patches. It applies over the atomic.h standardization patches. Signed-off-by: Mathieu Desnoyers Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/asm-ia64/atomic.h | 59 +++++++++++++++++++++++++---------------------- 1 file changed, 31 insertions(+), 28 deletions(-) (limited to 'include/asm-ia64') diff --git a/include/asm-ia64/atomic.h b/include/asm-ia64/atomic.h index b16ad235c7ee..1fc3b83325da 100644 --- a/include/asm-ia64/atomic.h +++ b/include/asm-ia64/atomic.h @@ -15,6 +15,7 @@ #include #include +#include /* * On IA-64, counter must always be volatile to ensure that that the @@ -95,36 +96,38 @@ ia64_atomic64_sub (__s64 i, atomic64_t *v) (cmpxchg(&((v)->counter), old, new)) #define atomic64_xchg(v, new) (xchg(&((v)->counter), new)) -#define atomic_add_unless(v, a, u) \ -({ \ - __typeof__(v->counter) c, old; \ - c = atomic_read(v); \ - for (;;) { \ - if (unlikely(c == (u))) \ - break; \ - old = atomic_cmpxchg((v), c, c + (a)); \ - if (likely(old == c)) \ - break; \ - c = old; \ - } \ - c != (u); \ -}) +static __inline__ int atomic_add_unless(atomic_t *v, int a, int u) +{ + int c, old; + c = atomic_read(v); + for (;;) { + if (unlikely(c == (u))) + break; + old = atomic_cmpxchg((v), c, c + (a)); + if (likely(old == c)) + break; + c = old; + } + return c != (u); +} + #define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0) -#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; \ - } \ - c != (u); \ -}) +static __inline__ int atomic64_add_unless(atomic64_t *v, long a, long u) +{ + long 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; + } + return c != (u); +} + #define atomic64_inc_not_zero(v) atomic64_add_unless((v), 1, 0) #define atomic_add_return(i,v) \ -- cgit v1.2.2