Author: rwatson Date: Sun Apr 19 20:19:13 2009 New Revision: 191276 URL: http://svn.freebsd.org/changeset/base/191276
Log: 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@ Modified: head/sys/amd64/include/param.h head/sys/arm/include/param.h head/sys/i386/include/param.h head/sys/ia64/include/param.h head/sys/mips/include/param.h head/sys/powerpc/include/param.h head/sys/sparc64/include/param.h head/sys/sun4v/include/param.h Modified: head/sys/amd64/include/param.h ============================================================================== --- head/sys/amd64/include/param.h Sun Apr 19 18:23:23 2009 (r191275) +++ head/sys/amd64/include/param.h Sun Apr 19 20:19:13 2009 (r191276) @@ -89,6 +89,10 @@ #define ALIGN(p) _ALIGN(p) #define ALIGNED_POINTER(p,t) _ALIGNED_POINTER(p,t) +#ifndef CACHE_LINE_SHIFT +#define CACHE_LINE_SHIFT 6 +#endif +#define CACHE_LINE_SIZE (1 << CACHE_LINE_SHIFT) /* Size of the level 1 page table units */ #define NPTEPG (PAGE_SIZE/(sizeof (pt_entry_t))) Modified: head/sys/arm/include/param.h ============================================================================== --- head/sys/arm/include/param.h Sun Apr 19 18:23:23 2009 (r191275) +++ head/sys/arm/include/param.h Sun Apr 19 20:19:13 2009 (r191276) @@ -81,6 +81,11 @@ #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 12 #define PAGE_SIZE (1 << PAGE_SHIFT) /* Page size */ #define PAGE_MASK (PAGE_SIZE - 1) Modified: head/sys/i386/include/param.h ============================================================================== --- head/sys/i386/include/param.h Sun Apr 19 18:23:23 2009 (r191275) +++ head/sys/i386/include/param.h Sun Apr 19 20:19:13 2009 (r191276) @@ -74,6 +74,11 @@ #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 12 /* LOG2(PAGE_SIZE) */ #define PAGE_SIZE (1<<PAGE_SHIFT) /* bytes/page */ #define PAGE_MASK (PAGE_SIZE-1) Modified: head/sys/ia64/include/param.h ============================================================================== --- head/sys/ia64/include/param.h Sun Apr 19 18:23:23 2009 (r191275) +++ head/sys/ia64/include/param.h Sun Apr 19 20:19:13 2009 (r191276) @@ -99,6 +99,11 @@ #define ALIGN(p) _ALIGN(p) #define ALIGNED_POINTER(p,t) _ALIGNED_POINTER(p,t) +#ifndef CACHE_LINE_SHIFT +#define CACHE_LINE_SHIFT 6 +#endif +#define CACHE_LINE_SIZE (1 << CACHE_LINE_SHIFT) + #ifndef LOG2_PAGE_SIZE #define LOG2_PAGE_SIZE 13 /* 8K pages by default. */ #endif Modified: head/sys/mips/include/param.h ============================================================================== --- head/sys/mips/include/param.h Sun Apr 19 18:23:23 2009 (r191275) +++ head/sys/mips/include/param.h Sun Apr 19 20:19:13 2009 (r191276) @@ -89,6 +89,11 @@ #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 NBPG 4096 /* bytes/page */ #define PGOFSET (NBPG-1) /* byte offset into page */ #define PGSHIFT 12 /* LOG2(NBPG) */ Modified: head/sys/powerpc/include/param.h ============================================================================== --- head/sys/powerpc/include/param.h Sun Apr 19 18:23:23 2009 (r191275) +++ head/sys/powerpc/include/param.h Sun Apr 19 20:19:13 2009 (r191276) @@ -79,6 +79,11 @@ #define ALIGNBYTES _ALIGNBYTES #define ALIGN(p) _ALIGN(p) +#ifndef CACHE_LINE_SHIFT +#define CACHE_LINE_SHIFT 7 +#endif +#define CACHE_LINE_SIZE (1 << CACHE_LINE_SHIFT) + #define PAGE_SHIFT 12 #define PAGE_SIZE (1 << PAGE_SHIFT) /* Page size */ #define PAGE_MASK (PAGE_SIZE - 1) Modified: head/sys/sparc64/include/param.h ============================================================================== --- head/sys/sparc64/include/param.h Sun Apr 19 18:23:23 2009 (r191275) +++ head/sys/sparc64/include/param.h Sun Apr 19 20:19:13 2009 (r191276) @@ -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) Modified: head/sys/sun4v/include/param.h ============================================================================== --- head/sys/sun4v/include/param.h Sun Apr 19 18:23:23 2009 (r191275) +++ head/sys/sun4v/include/param.h Sun Apr 19 20:19:13 2009 (r191276) @@ -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) _______________________________________________ svn-src-all@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/svn-src-all To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"
