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| author | Greg KH <greg@press.(none)> | 2005-06-29 22:54:31 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2005-06-29 22:54:31 -0700 |
| commit | bf164c790deb79b18faf304b0763e44a02c79f90 (patch) | |
| tree | 8fedcdce1f65aa6bc98fea0da6227d3fc0fc51fd /include/asm-arm/system.h | |
| parent | d62c0f9fd2d3943a3eca85b490d86e1605000ccb (diff) | |
| parent | 9b4311eedb17fa88f02e4876cd6aa9a08e383cd6 (diff) | |
| download | blackbird-op-linux-bf164c790deb79b18faf304b0763e44a02c79f90.tar.gz blackbird-op-linux-bf164c790deb79b18faf304b0763e44a02c79f90.zip | |
Merge rsync://rsync.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
Diffstat (limited to 'include/asm-arm/system.h')
| -rw-r--r-- | include/asm-arm/system.h | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/include/asm-arm/system.h b/include/asm-arm/system.h index 3d0d2860b6db..cdf49f442fd2 100644 --- a/include/asm-arm/system.h +++ b/include/asm-arm/system.h @@ -290,7 +290,6 @@ do { \ }) #ifdef CONFIG_SMP -#error SMP not supported #define smp_mb() mb() #define smp_rmb() rmb() @@ -304,6 +303,8 @@ do { \ #define smp_wmb() barrier() #define smp_read_barrier_depends() do { } while(0) +#endif /* CONFIG_SMP */ + #if defined(CONFIG_CPU_SA1100) || defined(CONFIG_CPU_SA110) /* * On the StrongARM, "swp" is terminally broken since it bypasses the @@ -316,9 +317,16 @@ do { \ * * We choose (1) since its the "easiest" to achieve here and is not * dependent on the processor type. + * + * NOTE that this solution won't work on an SMP system, so explcitly + * forbid it here. */ +#ifdef CONFIG_SMP +#error SMP is not supported on SA1100/SA110 +#else #define swp_is_buggy #endif +#endif static inline unsigned long __xchg(unsigned long x, volatile void *ptr, int size) { @@ -361,8 +369,6 @@ static inline unsigned long __xchg(unsigned long x, volatile void *ptr, int size return ret; } -#endif /* CONFIG_SMP */ - #endif /* __ASSEMBLY__ */ #define arch_align_stack(x) (x) |
