diff options
| author | Bob Picco <bob.picco@hp.com> | 2005-10-04 15:13:50 -0400 |
|---|---|---|
| committer | Tony Luck <tony.luck@intel.com> | 2005-10-04 13:21:13 -0700 |
| commit | 1be7d9935b9c7fb9bd5964bfaf3ac543381277db (patch) | |
| tree | fe39c6d9e19fb890812318f5f3b318de6c3afc57 /include/asm-ia64/sparsemem.h | |
| parent | c678796cab4b5288ad578802a54cb1480ae20a08 (diff) | |
[PATCH] V5 ia64 SPARSEMEM - conditional changes for SPARSEMEM
This patch introduces the conditional changes required for the three
memory models. With [patch 1/4] there are three memory models; FLATMEM,
DISCONTIG and SPARSEMEM. Also a new arch include file sparemem.h is
introduced for defining SPARSEMEM parameters.
Signed-off-by: Bob Picco <bob.picco@hp.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Diffstat (limited to 'include/asm-ia64/sparsemem.h')
| -rw-r--r-- | include/asm-ia64/sparsemem.h | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/include/asm-ia64/sparsemem.h b/include/asm-ia64/sparsemem.h new file mode 100644 index 00000000000..67a7c40ec27 --- /dev/null +++ b/include/asm-ia64/sparsemem.h @@ -0,0 +1,20 @@ +#ifndef _ASM_IA64_SPARSEMEM_H +#define _ASM_IA64_SPARSEMEM_H + +#ifdef CONFIG_SPARSEMEM +/* + * SECTION_SIZE_BITS 2^N: how big each section will be + * MAX_PHYSMEM_BITS 2^N: how much memory we can have in that space + */ + +#define SECTION_SIZE_BITS (30) +#define MAX_PHYSMEM_BITS (50) +#ifdef CONFIG_FORCE_MAX_ZONEORDER +#if ((CONFIG_FORCE_MAX_ZONEORDER - 1 + PAGE_SHIFT) > SECTION_SIZE_BITS) +#undef SECTION_SIZE_BITS +#define SECTION_SIZE_BITS (CONFIG_FORCE_MAX_ZONEORDER - 1 + PAGE_SHIFT) +#endif +#endif + +#endif /* CONFIG_SPARSEMEM */ +#endif /* _ASM_IA64_SPARSEMEM_H */ |