Commit 1be7d993 authored by Bob Picco's avatar Bob Picco Committed by Tony Luck
Browse files

[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: default avatarBob Picco <bob.picco@hp.com>
Signed-off-by: default avatarTony Luck <tony.luck@intel.com>
parent c678796c

include/asm-ia64/meminit.h

+1 −1
Original line number Diff line number Diff line
@@ -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)

include/asm-ia64/mmzone.h

+7 −3
Original line number Diff line number Diff line
@@ -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 */

include/asm-ia64/nodedata.h

+2 −2
Original line number Diff line number Diff line
@@ -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 */

include/asm-ia64/page.h

+3 −3
Original line number Diff line number Diff line
@@ -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))

include/asm-ia64/sparsemem.h

0 → 100644
+20 −0
Original line number Diff line number Diff line 
#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 */

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