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| author | Robert Watson <rwatson@FreeBSD.org> | 2009-04-19 20:19:13 +0000 |
|---|---|---|
| committer | Robert Watson <rwatson@FreeBSD.org> | 2009-04-19 20:19:13 +0000 |
| commit | a93fa8f2bbd27fcd845e2ed0b5359e14f0e19910 (patch) | |
| tree | 30f708f0df558e2567b5c3f03e96c6e13b769058 /sys/sparc64/include/param.h | |
| parent | 99d67eca502799fc5e63a6409033a0fabe79c64e (diff) | |
| download | src-a93fa8f2bbd27fcd845e2ed0b5359e14f0e19910.tar.gz src-a93fa8f2bbd27fcd845e2ed0b5359e14f0e19910.zip | |
For each architecture, define CACHE_LINE_SHIFT and a derived
CACHE_LINE_SIZE constant. These constants are intended to
over-estimate the cache line size, and be used at compile-time
when a run-time tuning alternative isn't appropriate or
available.
Defaults for all architectures are 64 bytes, except powerpc
where it is 128 bytes (used on G5 systems).
MFC after: 2 weeks
Discussed on: arch@
Notes
Notes:
svn path=/head/; revision=191276
Diffstat (limited to 'sys/sparc64/include/param.h')
| -rw-r--r-- | sys/sparc64/include/param.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/sys/sparc64/include/param.h b/sys/sparc64/include/param.h index 8a1c7df4aedf..e8f783f180b4 100644 --- a/sys/sparc64/include/param.h +++ b/sys/sparc64/include/param.h @@ -71,6 +71,11 @@ #define ALIGNBYTES _ALIGNBYTES #define ALIGN(p) _ALIGN(p) +#ifndef CACHE_LINE_SHIFT +#define CACHE_LINE_SHIFT 6 +#endif +#define CACHE_LINE_SIZE (1 << CACHE_LINE_SHIFT) + #define PAGE_SHIFT_8K 13 #define PAGE_SIZE_8K (1L<<PAGE_SHIFT_8K) #define PAGE_MASK_8K (PAGE_SIZE_8K-1) |