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author | Becky Bruce <bgill@freescale.com> | 2005-09-22 14:20:04 -0500 |
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committer | Paul Mackerras <paulus@samba.org> | 2005-09-25 22:38:46 +1000 |
commit | feaf7cf153335fe7100b65ed6f4585c3574fe69a (patch) | |
tree | c57198f01b5f12ffe8ce90f4e1399505c1f84a02 /include/asm-powerpc/synch.h | |
parent | 2bfadee32f1501faa3184d574f6a769f17236c87 (diff) | |
download | kernel_samsung_smdk4412-feaf7cf153335fe7100b65ed6f4585c3574fe69a.zip kernel_samsung_smdk4412-feaf7cf153335fe7100b65ed6f4585c3574fe69a.tar.gz kernel_samsung_smdk4412-feaf7cf153335fe7100b65ed6f4585c3574fe69a.tar.bz2 |
[PATCH] powerpc: merge atomic.h, memory.h
powerpc: Merge atomic.h and memory.h into powerpc
Merged atomic.h into include/powerpc. Moved asm-style HMT_ defines from
memory.h into ppc_asm.h, where there were already HMT_defines; moved c-style
HMT_ defines to processor.h. Renamed memory.h to synch.h to better reflect
its contents.
Signed-off-by: Kumar Gala <kumar.gala@freescale.com>
Signed-off-by: Becky Bruce <becky.bruce@freescale.com>
Signed-off-by: Jon Loeliger <linuxppc@jdl.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'include/asm-powerpc/synch.h')
-rw-r--r-- | include/asm-powerpc/synch.h | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/include/asm-powerpc/synch.h b/include/asm-powerpc/synch.h new file mode 100644 index 0000000..4660c03 --- /dev/null +++ b/include/asm-powerpc/synch.h @@ -0,0 +1,51 @@ +#ifndef _ASM_POWERPC_SYNCH_H +#define _ASM_POWERPC_SYNCH_H + +#include <linux/config.h> + +#ifdef __powerpc64__ +#define __SUBARCH_HAS_LWSYNC +#endif + +#ifdef __SUBARCH_HAS_LWSYNC +# define LWSYNC lwsync +#else +# define LWSYNC sync +#endif + + +/* + * Arguably the bitops and *xchg operations don't imply any memory barrier + * or SMP ordering, but in fact a lot of drivers expect them to imply + * both, since they do on x86 cpus. + */ +#ifdef CONFIG_SMP +#define EIEIO_ON_SMP "eieio\n" +#define ISYNC_ON_SMP "\n\tisync" +#define SYNC_ON_SMP __stringify(LWSYNC) "\n" +#else +#define EIEIO_ON_SMP +#define ISYNC_ON_SMP +#define SYNC_ON_SMP +#endif + +static inline void eieio(void) +{ + __asm__ __volatile__ ("eieio" : : : "memory"); +} + +static inline void isync(void) +{ + __asm__ __volatile__ ("isync" : : : "memory"); +} + +#ifdef CONFIG_SMP +#define eieio_on_smp() eieio() +#define isync_on_smp() isync() +#else +#define eieio_on_smp() __asm__ __volatile__("": : :"memory") +#define isync_on_smp() __asm__ __volatile__("": : :"memory") +#endif + +#endif /* _ASM_POWERPC_SYNCH_H */ + |