diff options
author | Mel Gorman <mgorman@suse.de> | 2014-01-10 12:41:02 +1100 |
---|---|---|
committer | Stephen Rothwell <sfr@canb.auug.org.au> | 2014-01-10 12:41:02 +1100 |
commit | fdca7a29ffa33bbb396bf096742670606fb3c8c1 (patch) | |
tree | 2dcad9cd53b39294cce44328cae7dbc5467df36b /arch/ia64/mm/contig.c | |
parent | 1ada7d85e3d467a35c090d150b31a3a5f32dcc1e (diff) |
mm, show_mem: remove SHOW_MEM_FILTER_PAGE_COUNT
Commit 4b59e6c4 ("mm, show_mem: suppress page counts in non-blockable
contexts") introduced SHOW_MEM_FILTER_PAGE_COUNT to suppress PFN walks on
large memory machines. Commit c78e9363 ("mm: do not walk all of system
memory during show_mem") avoided a PFN walk in the generic show_mem helper
which removes the requirement for SHOW_MEM_FILTER_PAGE_COUNT in that case.
This patch removes PFN walkers from the arch-specific implementations that
report on a per-node or per-zone granularity. ARM and unicore32 still do
a PFN walk as they report memory usage on each bank which is a much finer
granularity where the debugging information may still be of use. As the
remaining arches doing PFN walks have relatively small amounts of memory,
this patch simply removes SHOW_MEM_FILTER_PAGE_COUNT.
Signed-off-by: Mel Gorman <mgorman@suse.de>
Acked-by: David Rientjes <rientjes@google.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: James Bottomley <jejb@parisc-linux.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'arch/ia64/mm/contig.c')
-rw-r--r-- | arch/ia64/mm/contig.c | 68 |
1 files changed, 0 insertions, 68 deletions
diff --git a/arch/ia64/mm/contig.c b/arch/ia64/mm/contig.c index da5237d636d6..52715a71aede 100644 --- a/arch/ia64/mm/contig.c +++ b/arch/ia64/mm/contig.c @@ -31,74 +31,6 @@ static unsigned long max_gap; #endif -/** - * show_mem - give short summary of memory stats - * - * Shows a simple page count of reserved and used pages in the system. - * For discontig machines, it does this on a per-pgdat basis. - */ -void show_mem(unsigned int filter) -{ - int i, total_reserved = 0; - int total_shared = 0, total_cached = 0; - unsigned long total_present = 0; - pg_data_t *pgdat; - - printk(KERN_INFO "Mem-info:\n"); - show_free_areas(filter); - printk(KERN_INFO "Node memory in pages:\n"); - if (filter & SHOW_MEM_FILTER_PAGE_COUNT) - return; - for_each_online_pgdat(pgdat) { - unsigned long present; - unsigned long flags; - int shared = 0, cached = 0, reserved = 0; - int nid = pgdat->node_id; - - if (skip_free_areas_node(filter, nid)) - continue; - pgdat_resize_lock(pgdat, &flags); - present = pgdat->node_present_pages; - for(i = 0; i < pgdat->node_spanned_pages; i++) { - struct page *page; - if (unlikely(i % MAX_ORDER_NR_PAGES == 0)) - touch_nmi_watchdog(); - if (pfn_valid(pgdat->node_start_pfn + i)) - page = pfn_to_page(pgdat->node_start_pfn + i); - else { -#ifdef CONFIG_VIRTUAL_MEM_MAP - if (max_gap < LARGE_GAP) - continue; -#endif - i = vmemmap_find_next_valid_pfn(nid, i) - 1; - continue; - } - if (PageReserved(page)) - reserved++; - else if (PageSwapCache(page)) - cached++; - else if (page_count(page)) - shared += page_count(page)-1; - } - pgdat_resize_unlock(pgdat, &flags); - total_present += present; - total_reserved += reserved; - total_cached += cached; - total_shared += shared; - printk(KERN_INFO "Node %4d: RAM: %11ld, rsvd: %8d, " - "shrd: %10d, swpd: %10d\n", nid, - present, reserved, shared, cached); - } - printk(KERN_INFO "%ld pages of RAM\n", total_present); - printk(KERN_INFO "%d reserved pages\n", total_reserved); - printk(KERN_INFO "%d pages shared\n", total_shared); - printk(KERN_INFO "%d pages swap cached\n", total_cached); - printk(KERN_INFO "Total of %ld pages in page table cache\n", - quicklist_total_size()); - printk(KERN_INFO "%ld free buffer pages\n", nr_free_buffer_pages()); -} - - /* physical address where the bootmem map is located */ unsigned long bootmap_start; |