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[PATCH] V5 ia64 SPARSEMEM - conditional changes for SPARSEMEM

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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>
This commit is contained in:
Bob Picco 2005-10-04 15:13:50 -04:00 committed by Tony Luck
parent c678796cab
commit 1be7d9935b
5 changed files with 33 additions and 9 deletions
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2
include/asm-ia64/meminit.h
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@ -41,7 +41,7 @@ extern int filter_rsvd_memory (unsigned long start, unsigned long end, void *arg
#define GRANULEROUNDUP(n) (((n)+IA64_GRANULE_SIZE-1) & ~(IA64_GRANULE_SIZE-1))
#define ORDERROUNDDOWN(n) ((n) & ~((PAGE_SIZE<<MAX_ORDER)-1))
#ifdef CONFIG_DISCONTIGMEM
#ifdef CONFIG_NUMA
extern void call_pernode_memory (unsigned long start, unsigned long len, void *func);
#else
# define call_pernode_memory(start, len, func) (*func)(start, len, 0)

10
include/asm-ia64/mmzone.h
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@ -15,7 +15,7 @@
#include <asm/page.h>
#include <asm/meminit.h>
#ifdef CONFIG_DISCONTIGMEM
#ifdef CONFIG_NUMA
static inline int pfn_to_nid(unsigned long pfn)
{
@ -31,6 +31,10 @@ static inline int pfn_to_nid(unsigned long pfn)
#endif
}
#ifdef CONFIG_HAVE_ARCH_EARLY_PFN_TO_NID
extern int early_pfn_to_nid(unsigned long pfn);
#endif
#ifdef CONFIG_IA64_DIG /* DIG systems are small */
# define MAX_PHYSNODE_ID 8
# define NR_NODE_MEMBLKS (MAX_NUMNODES * 8)
@ -39,8 +43,8 @@ static inline int pfn_to_nid(unsigned long pfn)
# define NR_NODE_MEMBLKS (MAX_NUMNODES * 4)
#endif
#else /* CONFIG_DISCONTIGMEM */
#else /* CONFIG_NUMA */
# define NR_NODE_MEMBLKS (MAX_NUMNODES * 4)
#endif /* CONFIG_DISCONTIGMEM */
#endif /* CONFIG_NUMA */
#endif /* _ASM_IA64_MMZONE_H */

4
include/asm-ia64/nodedata.h
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@ -17,7 +17,7 @@
#include <asm/percpu.h>
#include <asm/mmzone.h>
#ifdef CONFIG_DISCONTIGMEM
#ifdef CONFIG_NUMA
/*
* Node Data. One of these structures is located on each node of a NUMA system.
@ -47,6 +47,6 @@ struct ia64_node_data {
*/
#define NODE_DATA(nid) (local_node_data->pg_data_ptrs[nid])
#endif /* CONFIG_DISCONTIGMEM */
#endif /* CONFIG_NUMA */
#endif /* _ASM_IA64_NODEDATA_H */

6
include/asm-ia64/page.h
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@ -102,15 +102,15 @@ do { \
#ifdef CONFIG_VIRTUAL_MEM_MAP
extern int ia64_pfn_valid (unsigned long pfn);
#else
#elif defined(CONFIG_FLATMEM)
# define ia64_pfn_valid(pfn) 1
#endif
#ifndef CONFIG_DISCONTIGMEM
#ifdef CONFIG_FLATMEM
# define pfn_valid(pfn) (((pfn) < max_mapnr) && ia64_pfn_valid(pfn))
# define page_to_pfn(page) ((unsigned long) (page - mem_map))
# define pfn_to_page(pfn) (mem_map + (pfn))
#else
#elif defined(CONFIG_DISCONTIGMEM)
extern struct page *vmem_map;
extern unsigned long max_low_pfn;
# define pfn_valid(pfn) (((pfn) < max_low_pfn) && ia64_pfn_valid(pfn))

20
include/asm-ia64/sparsemem.h Normal file
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@ -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 */