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| author | Nicolas Pitre <nico@cam.org> | 2008-09-17 21:21:55 +0200 |
|---|---|---|
| committer | Nicolas Pitre <nico@cam.org> | 2009-03-16 02:01:21 +0100 |
| commit | 3835f6cb645bdb9a58aa6e062fe1d5777f1a9748 (patch) | |
| tree | de3429794bb06cab351a7909da7c8c33bfa38567 | |
| parent | [ARM] kmap support (diff) | |
| download | linux-3835f6cb645bdb9a58aa6e062fe1d5777f1a9748.tar.xz linux-3835f6cb645bdb9a58aa6e062fe1d5777f1a9748.zip | |
[ARM] mem_init(): make highmem pages available for use
Signed-off-by: Nicolas Pitre <nico@marvell.com>
| -rw-r--r-- | arch/arm/mm/init.c | 21 |
1 files changed, 18 insertions, 3 deletions
diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c index 80fd3b69ae1f..8277802ec859 100644 --- a/arch/arm/mm/init.c +++ b/arch/arm/mm/init.c @@ -15,6 +15,7 @@ #include <linux/mman.h> #include <linux/nodemask.h> #include <linux/initrd.h> +#include <linux/highmem.h> #include <asm/mach-types.h> #include <asm/sections.h> @@ -485,7 +486,7 @@ void __init mem_init(void) int i, node; #ifndef CONFIG_DISCONTIGMEM - max_mapnr = virt_to_page(high_memory) - mem_map; + max_mapnr = pfn_to_page(max_pfn + PHYS_PFN_OFFSET) - mem_map; #endif /* this will put all unused low memory onto the freelists */ @@ -504,6 +505,19 @@ void __init mem_init(void) __phys_to_pfn(__pa(swapper_pg_dir)), NULL); #endif +#ifdef CONFIG_HIGHMEM + /* set highmem page free */ + for_each_online_node(node) { + for_each_nodebank (i, &meminfo, node) { + unsigned long start = bank_pfn_start(&meminfo.bank[i]); + unsigned long end = bank_pfn_end(&meminfo.bank[i]); + if (start >= max_low_pfn + PHYS_PFN_OFFSET) + totalhigh_pages += free_area(start, end, NULL); + } + } + totalram_pages += totalhigh_pages; +#endif + /* * Since our memory may not be contiguous, calculate the * real number of pages we have in this system @@ -521,9 +535,10 @@ void __init mem_init(void) initsize = __init_end - __init_begin; printk(KERN_NOTICE "Memory: %luKB available (%dK code, " - "%dK data, %dK init)\n", + "%dK data, %dK init, %luK highmem)\n", (unsigned long) nr_free_pages() << (PAGE_SHIFT-10), - codesize >> 10, datasize >> 10, initsize >> 10); + codesize >> 10, datasize >> 10, initsize >> 10, + (unsigned long) (totalhigh_pages << (PAGE_SHIFT-10))); if (PAGE_SIZE >= 16384 && num_physpages <= 128) { extern int sysctl_overcommit_memory; |