The patch titled
Subject: mm/page_owner: move page_owner specific function to page_owner.c
has been added to the -mm tree. Its filename is
mm-page_owner-move-page_owner-specific-function-to-page_ownerc.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-page_owner-move-page_owner-specific-function-to-page_ownerc.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-page_owner-move-page_owner-specific-function-to-page_ownerc.patch
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------------------------------------------------------
From: Joonsoo Kim <iamjoonsoo.kim@xxxxxxx>
Subject: 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@xxxxxxx
Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@xxxxxxx>
Reviewed-by: Sergey Senozhatsky <sergey.senozhatsky@xxxxxxxxx>
Acked-by: Vlastimil Babka <vbabka@xxxxxxx>
Cc: Minchan Kim <minchan@xxxxxxxxxx>
Cc: Michal Hocko <mhocko@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/page_owner.h | 2
mm/page_owner.c | 77 +++++++++++++++++++++++++++++++++++
2 files changed, 79 insertions(+)
diff -puN include/linux/page_owner.h~mm-page_owner-move-page_owner-specific-function-to-page_ownerc include/linux/page_owner.h
--- a/include/linux/page_owner.h~mm-page_owner-move-page_owner-specific-function-to-page_ownerc
+++ a/include/linux/page_owner.h
@@ -14,6 +14,8 @@ extern void __split_page_owner(struct pa
extern void __copy_page_owner(struct page *oldpage, struct page *newpage);
extern void __set_page_owner_migrate_reason(struct page *page, int reason);
extern void __dump_page_owner(struct page *page);
+extern void pagetypeinfo_showmixedcount_print(struct seq_file *m,
+ pg_data_t *pgdat, struct zone *zone);
static inline void reset_page_owner(struct page *page, unsigned int order)
{
diff -puN mm/page_owner.c~mm-page_owner-move-page_owner-specific-function-to-page_ownerc mm/page_owner.c
--- a/mm/page_owner.c~mm-page_owner-move-page_owner-specific-function-to-page_ownerc
+++ a/mm/page_owner.c
@@ -8,6 +8,7 @@
#include <linux/jump_label.h>
#include <linux/migrate.h>
#include <linux/stackdepot.h>
+#include <linux/seq_file.h>
#include "internal.h"
@@ -214,6 +215,82 @@ void __copy_page_owner(struct page *oldp
__set_bit(PAGE_EXT_OWNER, &new_ext->flags);
}
+static void pagetypeinfo_showmixedcount_print(struct seq_file *m,
+ pg_data_t *pgdat,
+ struct zone *zone)
+{
+ struct page *page;
+ struct page_ext *page_ext;
+ unsigned long pfn = zone->zone_start_pfn, block_end_pfn;
+ unsigned long end_pfn = pfn + zone->spanned_pages;
+ unsigned long count[MIGRATE_TYPES] = { 0, };
+ int pageblock_mt, page_mt;
+ int i;
+
+ /* Scan block by block. First and last block may be incomplete */
+ pfn = zone->zone_start_pfn;
+
+ /*
+ * Walk the zone in pageblock_nr_pages steps. If a page block spans
+ * a zone boundary, it will be double counted between zones. This does
+ * not matter as the mixed block count will still be correct
+ */
+ for (; pfn < end_pfn; ) {
+ if (!pfn_valid(pfn)) {
+ pfn = ALIGN(pfn + 1, MAX_ORDER_NR_PAGES);
+ continue;
+ }
+
+ block_end_pfn = ALIGN(pfn + 1, pageblock_nr_pages);
+ block_end_pfn = min(block_end_pfn, end_pfn);
+
+ page = pfn_to_page(pfn);
+ pageblock_mt = get_pageblock_migratetype(page);
+
+ for (; pfn < block_end_pfn; pfn++) {
+ if (!pfn_valid_within(pfn))
+ continue;
+
+ page = pfn_to_page(pfn);
+
+ if (page_zone(page) != zone)
+ continue;
+
+ if (PageBuddy(page)) {
+ pfn += (1UL << page_order(page)) - 1;
+ continue;
+ }
+
+ if (PageReserved(page))
+ continue;
+
+ page_ext = lookup_page_ext(page);
+ if (unlikely(!page_ext))
+ continue;
+
+ if (!test_bit(PAGE_EXT_OWNER, &page_ext->flags))
+ continue;
+
+ page_mt = gfpflags_to_migratetype(page_ext->gfp_mask);
+ if (pageblock_mt != page_mt) {
+ if (is_migrate_cma(pageblock_mt))
+ count[MIGRATE_MOVABLE]++;
+ else
+ count[pageblock_mt]++;
+
+ pfn = block_end_pfn;
+ break;
+ }
+ pfn += (1UL << page_ext->order) - 1;
+ }
+ }
+
+ /* Print counts */
+ seq_printf(m, "Node %d, zone %8s ", pgdat->node_id, zone->name);
+ for (i = 0; i < MIGRATE_TYPES; i++)
+ seq_printf(m, "%12lu ", count[i]);
+ seq_putc(m, '\n');
+}
static ssize_t
print_page_owner(char __user *buf, size_t count, unsigned long pfn,
struct page *page, struct page_ext *page_ext,
_
Patches currently in -mm which might be from iamjoonsoo.kim@xxxxxxx are
mm-debug_pagealloc-clean-up-guard-page-handling-code.patch
mm-debug_pagealloc-dont-allocate-page_ext-if-we-dont-use-guard-page.patch
mm-page_owner-move-page_owner-specific-function-to-page_ownerc.patch
mm-page_ext-rename-offset-to-index.patch
mm-page_ext-support-extra-space-allocation-by-page_ext-user.patch
mm-page_owner-dont-define-fields-on-struct-page_ext-by-hard-coding.patch
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