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mm/ARC: prepare for removing num_physpages and simplify mem_init() 

Prepare for removing num_physpages and simplify mem_init().

Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Acked-by: Vineet Gupta <vgupta@synopsys.com>   # for arch/arc
Cc: James Hogan <james.hogan@imgtec.com>
Cc: Rob Herring <rob.herring@calxeda.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Jiang Liu 2013-07-03 15:03:47 -07:00 committed by Linus Torvalds
parent d385d9ee7a
commit de35e1b828
1 changed files with 3 additions and 33 deletions
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36
arch/arc/mm/init.c
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@ -74,7 +74,7 @@ void __init setup_arch_memory(void)
/* Last usable page of low mem (no HIGHMEM yet for ARC port) */
max_low_pfn = max_pfn = PFN_DOWN(end_mem);
max_mapnr = num_physpages = max_low_pfn - min_low_pfn;
max_mapnr = max_low_pfn - min_low_pfn;
/*------------- reserve kernel image -----------------------*/
memblock_reserve(CONFIG_LINUX_LINK_BASE,
@ -84,7 +84,7 @@ void __init setup_arch_memory(void)
/*-------------- node setup --------------------------------*/
memset(zones_size, 0, sizeof(zones_size));
zones_size[ZONE_NORMAL] = num_physpages;
zones_size[ZONE_NORMAL] = max_low_pfn - min_low_pfn;
/*
* We can't use the helper free_area_init(zones[]) because it uses
@ -106,39 +106,9 @@ void __init setup_arch_memory(void)
*/
void __init mem_init(void)
{
int codesize, datasize, initsize, reserved_pages, free_pages;
int tmp;
high_memory = (void *)(CONFIG_LINUX_LINK_BASE + arc_mem_sz);
free_all_bootmem();
/* count all reserved pages [kernel code/data/mem_map..] */
reserved_pages = 0;
for (tmp = 0; tmp < max_mapnr; tmp++)
if (PageReserved(mem_map + tmp))
reserved_pages++;
/* XXX: nr_free_pages() is equivalent */
free_pages = max_mapnr - reserved_pages;
/*
* For the purpose of display below, split the "reserve mem"
* kernel code/data is already shown explicitly,
* Show any other reservations (mem_map[ ] et al)
*/
reserved_pages -= (((unsigned int)_end - CONFIG_LINUX_LINK_BASE) >>
PAGE_SHIFT);
codesize = _etext - _text;
datasize = _end - _etext;
initsize = __init_end - __init_begin;
pr_info("Memory Available: %dM / %ldM (%dK code, %dK data, %dK init, %dK reserv)\n",
PAGES_TO_MB(free_pages),
TO_MB(arc_mem_sz),
TO_KB(codesize), TO_KB(datasize), TO_KB(initsize),
PAGES_TO_KB(reserved_pages));
mem_init_print_info(NULL);
}
/*