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[PATCH] x86-64: Remove redundant max_mapnr and replace with end_pfn

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The FLATMEM people added it, but there doesn't seem a good reason
because end_pfn is identical.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Andi Kleen 2005-09-12 18:49:24 +02:00 committed by Linus Torvalds
parent 0a43e4bf74
commit b9aac10ddd
3 changed files with 3 additions and 8 deletions
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5
arch/x86_64/mm/init.c
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@ -411,11 +411,6 @@ void __init mem_init(void)
#ifdef CONFIG_NUMA
totalram_pages = numa_free_all_bootmem();
#else
#ifdef CONFIG_FLATMEM
max_mapnr = end_pfn;
if (!mem_map) BUG();
#endif
totalram_pages = free_all_bootmem();
#endif
reservedpages = end_pfn - totalram_pages - e820_hole_size(0, end_pfn);

4
include/asm-x86_64/page.h
View file

@ -32,6 +32,8 @@
#ifdef __KERNEL__
#ifndef __ASSEMBLY__
extern unsigned long end_pfn;
void clear_page(void *);
void copy_page(void *, void *);
@ -111,7 +113,7 @@ typedef struct { unsigned long pgprot; } pgprot_t;
#ifdef CONFIG_FLATMEM
#define pfn_to_page(pfn) (mem_map + (pfn))
#define page_to_pfn(page) ((unsigned long)((page) - mem_map))
#define pfn_valid(pfn) ((pfn) < max_mapnr)
#define pfn_valid(pfn) ((pfn) < end_pfn)
#endif
#define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)

2
include/asm-x86_64/proto.h
View file

@ -93,8 +93,6 @@ extern int unhandled_signal(struct task_struct *tsk, int sig);
extern void select_idle_routine(const struct cpuinfo_x86 *c);
extern void swiotlb_init(void);
extern unsigned long max_mapnr;
extern unsigned long end_pfn;
extern unsigned long table_start, table_end;
extern int exception_trace;