mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-24 04:30:52 +07:00
Print out statistics in relation to fragmentation avoidance to /proc/pagetypeinfo
This patch provides fragmentation avoidance statistics via /proc/pagetypeinfo. The information is collected only on request so there is no runtime overhead. The statistics are in three parts: The first part prints information on the size of blocks that pages are being grouped on and looks like Page block order: 10 Pages per block: 1024 The second part is a more detailed version of /proc/buddyinfo and looks like Free pages count per migrate type at order 0 1 2 3 4 5 6 7 8 9 10 Node 0, zone DMA, type Unmovable 0 0 0 0 0 0 0 0 0 0 0 Node 0, zone DMA, type Reclaimable 1 0 0 0 0 0 0 0 0 0 0 Node 0, zone DMA, type Movable 0 0 0 0 0 0 0 0 0 0 0 Node 0, zone DMA, type Reserve 0 4 4 0 0 0 0 1 0 1 0 Node 0, zone Normal, type Unmovable 111 8 4 4 2 3 1 0 0 0 0 Node 0, zone Normal, type Reclaimable 293 89 8 0 0 0 0 0 0 0 0 Node 0, zone Normal, type Movable 1 6 13 9 7 6 3 0 0 0 0 Node 0, zone Normal, type Reserve 0 0 0 0 0 0 0 0 0 0 4 The third part looks like Number of blocks type Unmovable Reclaimable Movable Reserve Node 0, zone DMA 0 1 2 1 Node 0, zone Normal 3 17 94 4 To walk the zones within a node with interrupts disabled, walk_zones_in_node() is introduced and shared between /proc/buddyinfo, /proc/zoneinfo and /proc/pagetypeinfo to reduce code duplication. It seems specific to what vmstat.c requires but could be broken out as a general utility function in mmzone.c if there were other other potential users. Signed-off-by: Mel Gorman <mel@csn.ul.ie> Acked-by: Andy Whitcroft <apw@shadowen.org> Acked-by: Christoph Lameter <clameter@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Mel Gorman
Linus Torvalds
parent
d9c2340052
commit
467c996c1e
@ -229,6 +229,19 @@ static const struct file_operations fragmentation_file_operations = {
|
||||
.release = seq_release,
|
||||
};
|
||||
|
||||
extern struct seq_operations pagetypeinfo_op;
|
||||
static int pagetypeinfo_open(struct inode *inode, struct file *file)
|
||||
{
|
||||
return seq_open(file, &pagetypeinfo_op);
|
||||
}
|
||||
|
||||
static const struct file_operations pagetypeinfo_file_ops = {
|
||||
.open = pagetypeinfo_open,
|
||||
.read = seq_read,
|
||||
.llseek = seq_lseek,
|
||||
.release = seq_release,
|
||||
};
|
||||
|
||||
extern struct seq_operations zoneinfo_op;
|
||||
static int zoneinfo_open(struct inode *inode, struct file *file)
|
||||
{
|
||||
@ -724,6 +737,7 @@ void __init proc_misc_init(void)
|
||||
#endif
|
||||
#endif
|
||||
create_seq_entry("buddyinfo",S_IRUGO, &fragmentation_file_operations);
|
||||
create_seq_entry("pagetypeinfo", S_IRUGO, &pagetypeinfo_file_ops);
|
||||
create_seq_entry("vmstat",S_IRUGO, &proc_vmstat_file_operations);
|
||||
create_seq_entry("zoneinfo",S_IRUGO, &proc_zoneinfo_file_operations);
|
||||
#ifdef CONFIG_BLOCK
|
||||
|
||||
@ -104,6 +104,18 @@ struct vm_area_struct;
|
||||
/* 4GB DMA on some platforms */
|
||||
#define GFP_DMA32 __GFP_DMA32
|
||||
|
||||
/* Convert GFP flags to their corresponding migrate type */
|
||||
static inline int allocflags_to_migratetype(gfp_t gfp_flags)
|
||||
{
|
||||
WARN_ON((gfp_flags & GFP_MOVABLE_MASK) == GFP_MOVABLE_MASK);
|
||||
|
||||
if (unlikely(page_group_by_mobility_disabled))
|
||||
return MIGRATE_UNMOVABLE;
|
||||
|
||||
/* Group based on mobility */
|
||||
return (((gfp_flags & __GFP_MOVABLE) != 0) << 1) |
|
||||
((gfp_flags & __GFP_RECLAIMABLE) != 0);
|
||||
}
|
||||
|
||||
static inline enum zone_type gfp_zone(gfp_t flags)
|
||||
{
|
||||
|
||||
@ -43,6 +43,16 @@
|
||||
for (order = 0; order < MAX_ORDER; order++) \
|
||||
for (type = 0; type < MIGRATE_TYPES; type++)
|
||||
|
||||
extern int page_group_by_mobility_disabled;
|
||||
|
||||
static inline int get_pageblock_migratetype(struct page *page)
|
||||
{
|
||||
if (unlikely(page_group_by_mobility_disabled))
|
||||
return MIGRATE_UNMOVABLE;
|
||||
|
||||
return get_pageblock_flags_group(page, PB_migrate, PB_migrate_end);
|
||||
}
|
||||
|
||||
struct free_area {
|
||||
struct list_head free_list[MIGRATE_TYPES];
|
||||
unsigned long nr_free;
|
||||
|
||||
@ -164,32 +164,12 @@ EXPORT_SYMBOL(nr_node_ids);
|
||||
|
||||
int page_group_by_mobility_disabled __read_mostly;
|
||||
|
||||
static inline int get_pageblock_migratetype(struct page *page)
|
||||
{
|
||||
if (unlikely(page_group_by_mobility_disabled))
|
||||
return MIGRATE_UNMOVABLE;
|
||||
|
||||
return get_pageblock_flags_group(page, PB_migrate, PB_migrate_end);
|
||||
}
|
||||
|
||||
static void set_pageblock_migratetype(struct page *page, int migratetype)
|
||||
{
|
||||
set_pageblock_flags_group(page, (unsigned long)migratetype,
|
||||
PB_migrate, PB_migrate_end);
|
||||
}
|
||||
|
||||
static inline int allocflags_to_migratetype(gfp_t gfp_flags)
|
||||
{
|
||||
WARN_ON((gfp_flags & GFP_MOVABLE_MASK) == GFP_MOVABLE_MASK);
|
||||
|
||||
if (unlikely(page_group_by_mobility_disabled))
|
||||
return MIGRATE_UNMOVABLE;
|
||||
|
||||
/* Cluster based on mobility */
|
||||
return (((gfp_flags & __GFP_MOVABLE) != 0) << 1) |
|
||||
((gfp_flags & __GFP_RECLAIMABLE) != 0);
|
||||
}
|
||||
|
||||
#ifdef CONFIG_DEBUG_VM
|
||||
static int page_outside_zone_boundaries(struct zone *zone, struct page *page)
|
||||
{
|
||||
|
||||
172
mm/vmstat.c
172
mm/vmstat.c
@ -398,6 +398,13 @@ void zone_statistics(struct zonelist *zonelist, struct zone *z)
|
||||
|
||||
#include <linux/seq_file.h>
|
||||
|
||||
static char * const migratetype_names[MIGRATE_TYPES] = {
|
||||
"Unmovable",
|
||||
"Reclaimable",
|
||||
"Movable",
|
||||
"Reserve",
|
||||
};
|
||||
|
||||
static void *frag_start(struct seq_file *m, loff_t *pos)
|
||||
{
|
||||
pg_data_t *pgdat;
|
||||
@ -422,28 +429,144 @@ static void frag_stop(struct seq_file *m, void *arg)
|
||||
{
|
||||
}
|
||||
|
||||
/*
|
||||
* This walks the free areas for each zone.
|
||||
*/
|
||||
static int frag_show(struct seq_file *m, void *arg)
|
||||
/* Walk all the zones in a node and print using a callback */
|
||||
static void walk_zones_in_node(struct seq_file *m, pg_data_t *pgdat,
|
||||
void (*print)(struct seq_file *m, pg_data_t *, struct zone *))
|
||||
{
|
||||
pg_data_t *pgdat = (pg_data_t *)arg;
|
||||
struct zone *zone;
|
||||
struct zone *node_zones = pgdat->node_zones;
|
||||
unsigned long flags;
|
||||
int order;
|
||||
|
||||
for (zone = node_zones; zone - node_zones < MAX_NR_ZONES; ++zone) {
|
||||
if (!populated_zone(zone))
|
||||
continue;
|
||||
|
||||
spin_lock_irqsave(&zone->lock, flags);
|
||||
print(m, pgdat, zone);
|
||||
spin_unlock_irqrestore(&zone->lock, flags);
|
||||
}
|
||||
}
|
||||
|
||||
static void frag_show_print(struct seq_file *m, pg_data_t *pgdat,
|
||||
struct zone *zone)
|
||||
{
|
||||
int order;
|
||||
|
||||
seq_printf(m, "Node %d, zone %8s ", pgdat->node_id, zone->name);
|
||||
for (order = 0; order < MAX_ORDER; ++order)
|
||||
seq_printf(m, "%6lu ", zone->free_area[order].nr_free);
|
||||
spin_unlock_irqrestore(&zone->lock, flags);
|
||||
seq_putc(m, '\n');
|
||||
}
|
||||
|
||||
/*
|
||||
* This walks the free areas for each zone.
|
||||
*/
|
||||
static int frag_show(struct seq_file *m, void *arg)
|
||||
{
|
||||
pg_data_t *pgdat = (pg_data_t *)arg;
|
||||
walk_zones_in_node(m, pgdat, frag_show_print);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void pagetypeinfo_showfree_print(struct seq_file *m,
|
||||
pg_data_t *pgdat, struct zone *zone)
|
||||
{
|
||||
int order, mtype;
|
||||
|
||||
for (mtype = 0; mtype < MIGRATE_TYPES; mtype++) {
|
||||
seq_printf(m, "Node %4d, zone %8s, type %12s ",
|
||||
pgdat->node_id,
|
||||
zone->name,
|
||||
migratetype_names[mtype]);
|
||||
for (order = 0; order < MAX_ORDER; ++order) {
|
||||
unsigned long freecount = 0;
|
||||
struct free_area *area;
|
||||
struct list_head *curr;
|
||||
|
||||
area = &(zone->free_area[order]);
|
||||
|
||||
list_for_each(curr, &area->free_list[mtype])
|
||||
freecount++;
|
||||
seq_printf(m, "%6lu ", freecount);
|
||||
}
|
||||
seq_putc(m, '\n');
|
||||
}
|
||||
}
|
||||
|
||||
/* Print out the free pages at each order for each migatetype */
|
||||
static int pagetypeinfo_showfree(struct seq_file *m, void *arg)
|
||||
{
|
||||
int order;
|
||||
pg_data_t *pgdat = (pg_data_t *)arg;
|
||||
|
||||
/* Print header */
|
||||
seq_printf(m, "%-43s ", "Free pages count per migrate type at order");
|
||||
for (order = 0; order < MAX_ORDER; ++order)
|
||||
seq_printf(m, "%6d ", order);
|
||||
seq_putc(m, '\n');
|
||||
|
||||
walk_zones_in_node(m, pgdat, pagetypeinfo_showfree_print);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void pagetypeinfo_showblockcount_print(struct seq_file *m,
|
||||
pg_data_t *pgdat, struct zone *zone)
|
||||
{
|
||||
int mtype;
|
||||
unsigned long pfn;
|
||||
unsigned long start_pfn = zone->zone_start_pfn;
|
||||
unsigned long end_pfn = start_pfn + zone->spanned_pages;
|
||||
unsigned long count[MIGRATE_TYPES] = { 0, };
|
||||
|
||||
for (pfn = start_pfn; pfn < end_pfn; pfn += pageblock_nr_pages) {
|
||||
struct page *page;
|
||||
|
||||
if (!pfn_valid(pfn))
|
||||
continue;
|
||||
|
||||
page = pfn_to_page(pfn);
|
||||
mtype = get_pageblock_migratetype(page);
|
||||
|
||||
count[mtype]++;
|
||||
}
|
||||
|
||||
/* Print counts */
|
||||
seq_printf(m, "Node %d, zone %8s ", pgdat->node_id, zone->name);
|
||||
for (mtype = 0; mtype < MIGRATE_TYPES; mtype++)
|
||||
seq_printf(m, "%12lu ", count[mtype]);
|
||||
seq_putc(m, '\n');
|
||||
}
|
||||
|
||||
/* Print out the free pages at each order for each migratetype */
|
||||
static int pagetypeinfo_showblockcount(struct seq_file *m, void *arg)
|
||||
{
|
||||
int mtype;
|
||||
pg_data_t *pgdat = (pg_data_t *)arg;
|
||||
|
||||
seq_printf(m, "\n%-23s", "Number of blocks type ");
|
||||
for (mtype = 0; mtype < MIGRATE_TYPES; mtype++)
|
||||
seq_printf(m, "%12s ", migratetype_names[mtype]);
|
||||
seq_putc(m, '\n');
|
||||
walk_zones_in_node(m, pgdat, pagetypeinfo_showblockcount_print);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/*
|
||||
* This prints out statistics in relation to grouping pages by mobility.
|
||||
* It is expensive to collect so do not constantly read the file.
|
||||
*/
|
||||
static int pagetypeinfo_show(struct seq_file *m, void *arg)
|
||||
{
|
||||
pg_data_t *pgdat = (pg_data_t *)arg;
|
||||
|
||||
seq_printf(m, "Page block order: %d\n", pageblock_order);
|
||||
seq_printf(m, "Pages per block: %lu\n", pageblock_nr_pages);
|
||||
seq_putc(m, '\n');
|
||||
pagetypeinfo_showfree(m, pgdat);
|
||||
pagetypeinfo_showblockcount(m, pgdat);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
@ -454,6 +577,13 @@ const struct seq_operations fragmentation_op = {
|
||||
.show = frag_show,
|
||||
};
|
||||
|
||||
const struct seq_operations pagetypeinfo_op = {
|
||||
.start = frag_start,
|
||||
.next = frag_next,
|
||||
.stop = frag_stop,
|
||||
.show = pagetypeinfo_show,
|
||||
};
|
||||
|
||||
#ifdef CONFIG_ZONE_DMA
|
||||
#define TEXT_FOR_DMA(xx) xx "_dma",
|
||||
#else
|
||||
@ -532,23 +662,10 @@ static const char * const vmstat_text[] = {
|
||||
#endif
|
||||
};
|
||||
|
||||
/*
|
||||
* Output information about zones in @pgdat.
|
||||
*/
|
||||
static int zoneinfo_show(struct seq_file *m, void *arg)
|
||||
static void zoneinfo_show_print(struct seq_file *m, pg_data_t *pgdat,
|
||||
struct zone *zone)
|
||||
{
|
||||
pg_data_t *pgdat = arg;
|
||||
struct zone *zone;
|
||||
struct zone *node_zones = pgdat->node_zones;
|
||||
unsigned long flags;
|
||||
|
||||
for (zone = node_zones; zone - node_zones < MAX_NR_ZONES; zone++) {
|
||||
int i;
|
||||
|
||||
if (!populated_zone(zone))
|
||||
continue;
|
||||
|
||||
spin_lock_irqsave(&zone->lock, flags);
|
||||
seq_printf(m, "Node %d, zone %8s", pgdat->node_id, zone->name);
|
||||
seq_printf(m,
|
||||
"\n pages free %lu"
|
||||
@ -607,9 +724,16 @@ static int zoneinfo_show(struct seq_file *m, void *arg)
|
||||
zone->all_unreclaimable,
|
||||
zone->prev_priority,
|
||||
zone->zone_start_pfn);
|
||||
spin_unlock_irqrestore(&zone->lock, flags);
|
||||
seq_putc(m, '\n');
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
* Output information about zones in @pgdat.
|
||||
*/
|
||||
static int zoneinfo_show(struct seq_file *m, void *arg)
|
||||
{
|
||||
pg_data_t *pgdat = (pg_data_t *)arg;
|
||||
walk_zones_in_node(m, pgdat, zoneinfo_show_print);
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user