Release 4.9 mm/mmzone.c

/*
 * linux/mm/mmzone.c
 *
 * management codes for pgdats, zones and page flags
 */


#include <linux/stddef.h>
#include <linux/mm.h>
#include <linux/mmzone.h>



struct pglist_data *first_online_pgdat(void)
{
	return NODE_DATA(first_online_node);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
kamezawa hiroyuki
kamezawa hiroyuki
15
100.00%
1
100.00%
Total
15
100.00%
1
100.00%



struct pglist_data *next_online_pgdat(struct pglist_data *pgdat)
{
	int nid = next_online_node(pgdat->node_id);

	if (nid == MAX_NUMNODES)
		return NULL;
	return NODE_DATA(nid);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
kamezawa hiroyuki
kamezawa hiroyuki
37
100.00%
1
100.00%
Total
37
100.00%
1
100.00%

/*
 * next_zone - helper magic for for_each_zone()
 */


struct zone *next_zone(struct zone *zone)
{
	pg_data_t *pgdat = zone->zone_pgdat;

	if (zone < pgdat->node_zones + MAX_NR_ZONES - 1)
		zone++;
	else {
		pgdat = next_online_pgdat(pgdat);
		if (pgdat)
			zone = pgdat->node_zones;
		else
			zone = NULL;
	}
	return zone;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
kamezawa hiroyuki
kamezawa hiroyuki
63
100.00%
1
100.00%
Total
63
100.00%
1
100.00%



static inline int zref_in_nodemask(struct zoneref *zref, nodemask_t *nodes)
{
#ifdef CONFIG_NUMA
	return node_isset(zonelist_node_idx(zref), *nodes);
#else
	return 1;
#endif /* CONFIG_NUMA */
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
mel gorman
mel gorman
39
100.00%
1
100.00%
Total
39
100.00%
1
100.00%

/* Returns the next zone at or below highest_zoneidx in a zonelist */


struct zoneref *__next_zones_zonelist(struct zoneref *z,
					enum zone_type highest_zoneidx,
					nodemask_t *nodes)
{
	/*
         * Find the next suitable zone to use for the allocation.
         * Only filter based on nodemask if it's set
         */
	if (likely(nodes == NULL))
		while (zonelist_zone_idx(z) > highest_zoneidx)
			z++;
	else
		while (zonelist_zone_idx(z) > highest_zoneidx ||
				(z->zone && !zref_in_nodemask(z, nodes)))
			z++;

	return z;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
mel gorman
mel gorman
72
100.00%
2
100.00%
Total
72
100.00%
2
100.00%

#ifdef CONFIG_ARCH_HAS_HOLES_MEMORYMODEL


bool memmap_valid_within(unsigned long pfn,
					struct page *page, struct zone *zone)
{
	if (page_to_pfn(page) != pfn)
		return false;

	if (page_zone(page) != zone)
		return false;

	return true;
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
mel gorman
mel gorman
42
91.30%
1
50.00%
yaowei bai
yaowei bai
4
8.70%
1
50.00%
Total
46
100.00%
2
100.00%

#endif /* CONFIG_ARCH_HAS_HOLES_MEMORYMODEL */



void lruvec_init(struct lruvec *lruvec)
{
	enum lru_list lru;

	memset(lruvec, 0, sizeof(struct lruvec));

	for_each_lru(lru)
		INIT_LIST_HEAD(&lruvec->lists[lru]);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
konstantin khlebnikov
konstantin khlebnikov
42
100.00%
1
100.00%
Total
42
100.00%
1
100.00%

#if defined(CONFIG_NUMA_BALANCING) && !defined(LAST_CPUPID_NOT_IN_PAGE_FLAGS)


int page_cpupid_xchg_last(struct page *page, int cpupid)
{
	unsigned long old_flags, flags;
	int last_cpupid;

	do {
		old_flags = flags = page->flags;
		last_cpupid = page_cpupid_last(page);

		flags &= ~(LAST_CPUPID_MASK << LAST_CPUPID_PGSHIFT);
		flags |= (cpupid & LAST_CPUPID_MASK) << LAST_CPUPID_PGSHIFT;
	} while (unlikely(cmpxchg(&page->flags, old_flags, flags) != old_flags));

	return last_cpupid;
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
mel gorman
mel gorman
71
86.59%
1
50.00%
peter zijlstra
peter zijlstra
11
13.41%
1
50.00%
Total
82
100.00%
2
100.00%

#endif
Overall Contributors
Person
Tokens
Prop
Commits
CommitProp
mel gorman
mel gorman
248
57.94%
4
50.00%
kamezawa hiroyuki
kamezawa hiroyuki
122
28.50%
1
12.50%
konstantin khlebnikov
konstantin khlebnikov
42
9.81%
1
12.50%
peter zijlstra
peter zijlstra
12
2.80%
1
12.50%
yaowei bai
yaowei bai
4
0.93%
1
12.50%
Total
428
100.00%
8
100.00%
  
Directory: mm