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mm/page_owner: move page_owner specific function to page_owner.c
There is no reason that page_owner specific function resides on vmstat.c. Link: http://lkml.kernel.org/r/1471315879-32294-4-git-send-email-iamjoonsoo.kim@lge.com Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com> Reviewed-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com> Acked-by: Vlastimil Babka <vbabka@suse.cz> Cc: Minchan Kim <minchan@kernel.org> Cc: Michal Hocko <mhocko@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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@ -14,6 +14,8 @@ extern void __split_page_owner(struct page *page, unsigned int order);
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extern void __copy_page_owner(struct page *oldpage, struct page *newpage);
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extern void __set_page_owner_migrate_reason(struct page *page, int reason);
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extern void __dump_page_owner(struct page *page);
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extern void pagetypeinfo_showmixedcount_print(struct seq_file *m,
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pg_data_t *pgdat, struct zone *zone);
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static inline void reset_page_owner(struct page *page, unsigned int order)
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{
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@ -8,6 +8,7 @@
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#include <linux/jump_label.h>
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#include <linux/migrate.h>
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#include <linux/stackdepot.h>
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#include <linux/seq_file.h>
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#include "internal.h"
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@ -214,6 +215,82 @@ void __copy_page_owner(struct page *oldpage, struct page *newpage)
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__set_bit(PAGE_EXT_OWNER, &new_ext->flags);
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}
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void pagetypeinfo_showmixedcount_print(struct seq_file *m,
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pg_data_t *pgdat, struct zone *zone)
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{
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struct page *page;
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struct page_ext *page_ext;
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unsigned long pfn = zone->zone_start_pfn, block_end_pfn;
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unsigned long end_pfn = pfn + zone->spanned_pages;
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unsigned long count[MIGRATE_TYPES] = { 0, };
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int pageblock_mt, page_mt;
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int i;
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/* Scan block by block. First and last block may be incomplete */
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pfn = zone->zone_start_pfn;
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/*
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* Walk the zone in pageblock_nr_pages steps. If a page block spans
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* a zone boundary, it will be double counted between zones. This does
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* not matter as the mixed block count will still be correct
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*/
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for (; pfn < end_pfn; ) {
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if (!pfn_valid(pfn)) {
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pfn = ALIGN(pfn + 1, MAX_ORDER_NR_PAGES);
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continue;
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}
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block_end_pfn = ALIGN(pfn + 1, pageblock_nr_pages);
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block_end_pfn = min(block_end_pfn, end_pfn);
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page = pfn_to_page(pfn);
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pageblock_mt = get_pageblock_migratetype(page);
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for (; pfn < block_end_pfn; pfn++) {
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if (!pfn_valid_within(pfn))
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continue;
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page = pfn_to_page(pfn);
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if (page_zone(page) != zone)
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continue;
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if (PageBuddy(page)) {
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pfn += (1UL << page_order(page)) - 1;
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continue;
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}
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if (PageReserved(page))
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continue;
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page_ext = lookup_page_ext(page);
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if (unlikely(!page_ext))
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continue;
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if (!test_bit(PAGE_EXT_OWNER, &page_ext->flags))
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continue;
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page_mt = gfpflags_to_migratetype(page_ext->gfp_mask);
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if (pageblock_mt != page_mt) {
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if (is_migrate_cma(pageblock_mt))
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count[MIGRATE_MOVABLE]++;
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else
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count[pageblock_mt]++;
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pfn = block_end_pfn;
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break;
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}
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pfn += (1UL << page_ext->order) - 1;
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}
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}
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/* Print counts */
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seq_printf(m, "Node %d, zone %8s ", pgdat->node_id, zone->name);
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for (i = 0; i < MIGRATE_TYPES; i++)
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seq_printf(m, "%12lu ", count[i]);
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seq_putc(m, '\n');
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}
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static ssize_t
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print_page_owner(char __user *buf, size_t count, unsigned long pfn,
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struct page *page, struct page_ext *page_ext,
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79
mm/vmstat.c
79
mm/vmstat.c
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@ -1254,85 +1254,6 @@ static int pagetypeinfo_showblockcount(struct seq_file *m, void *arg)
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return 0;
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}
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#ifdef CONFIG_PAGE_OWNER
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static void pagetypeinfo_showmixedcount_print(struct seq_file *m,
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pg_data_t *pgdat,
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struct zone *zone)
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{
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struct page *page;
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struct page_ext *page_ext;
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unsigned long pfn = zone->zone_start_pfn, block_end_pfn;
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unsigned long end_pfn = pfn + zone->spanned_pages;
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unsigned long count[MIGRATE_TYPES] = { 0, };
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int pageblock_mt, page_mt;
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int i;
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/* Scan block by block. First and last block may be incomplete */
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pfn = zone->zone_start_pfn;
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/*
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* Walk the zone in pageblock_nr_pages steps. If a page block spans
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* a zone boundary, it will be double counted between zones. This does
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* not matter as the mixed block count will still be correct
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*/
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for (; pfn < end_pfn; ) {
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if (!pfn_valid(pfn)) {
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pfn = ALIGN(pfn + 1, MAX_ORDER_NR_PAGES);
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continue;
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}
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block_end_pfn = ALIGN(pfn + 1, pageblock_nr_pages);
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block_end_pfn = min(block_end_pfn, end_pfn);
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page = pfn_to_page(pfn);
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pageblock_mt = get_pageblock_migratetype(page);
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for (; pfn < block_end_pfn; pfn++) {
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if (!pfn_valid_within(pfn))
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continue;
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page = pfn_to_page(pfn);
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if (page_zone(page) != zone)
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continue;
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if (PageBuddy(page)) {
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pfn += (1UL << page_order(page)) - 1;
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continue;
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}
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if (PageReserved(page))
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continue;
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page_ext = lookup_page_ext(page);
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if (unlikely(!page_ext))
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continue;
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if (!test_bit(PAGE_EXT_OWNER, &page_ext->flags))
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continue;
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page_mt = gfpflags_to_migratetype(page_ext->gfp_mask);
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if (pageblock_mt != page_mt) {
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if (is_migrate_cma(pageblock_mt))
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count[MIGRATE_MOVABLE]++;
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else
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count[pageblock_mt]++;
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pfn = block_end_pfn;
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break;
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}
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pfn += (1UL << page_ext->order) - 1;
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}
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}
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/* Print counts */
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seq_printf(m, "Node %d, zone %8s ", pgdat->node_id, zone->name);
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for (i = 0; i < MIGRATE_TYPES; i++)
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seq_printf(m, "%12lu ", count[i]);
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seq_putc(m, '\n');
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}
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#endif /* CONFIG_PAGE_OWNER */
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/*
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* Print out the number of pageblocks for each migratetype that contain pages
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* of other types. This gives an indication of how well fallbacks are being
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