mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-12-28 00:35:01 +00:00
mm: add per-order mTHP swpin counters
This helps profile the sizes of folios being swapped in. Currently, only mTHP swap-out is being counted. The new interface can be found at: /sys/kernel/mm/transparent_hugepage/hugepages-<size>/stats swpin For example, cat /sys/kernel/mm/transparent_hugepage/hugepages-64kB/stats/swpin 12809 cat /sys/kernel/mm/transparent_hugepage/hugepages-32kB/stats/swpin 4763 [v-songbaohua@oppo.com: add a blank line in doc] Link: https://lkml.kernel.org/r/20241030233423.80759-1-21cnbao@gmail.com Link: https://lkml.kernel.org/r/20241026082423.26298-1-21cnbao@gmail.com Signed-off-by: Barry Song <v-songbaohua@oppo.com> Reviewed-by: Baolin Wang <baolin.wang@linux.alibaba.com> Acked-by: David Hildenbrand <david@redhat.com> Cc: Chris Li <chrisl@kernel.org> Cc: Yosry Ahmed <yosryahmed@google.com> Cc: "Huang, Ying" <ying.huang@intel.com> Cc: Kairui Song <kasong@tencent.com> Cc: Ryan Roberts <ryan.roberts@arm.com> Cc: Kanchana P Sridhar <kanchana.p.sridhar@intel.com> Cc: Usama Arif <usamaarif642@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
parent
ed882add6d
commit
aaf2914aec
@ -534,6 +534,10 @@ zswpout
|
||||
is incremented every time a huge page is swapped out to zswap in one
|
||||
piece without splitting.
|
||||
|
||||
swpin
|
||||
is incremented every time a huge page is swapped in from a non-zswap
|
||||
swap device in one piece.
|
||||
|
||||
swpout
|
||||
is incremented every time a huge page is swapped out to a non-zswap
|
||||
swap device in one piece without splitting.
|
||||
|
@ -120,6 +120,7 @@ enum mthp_stat_item {
|
||||
MTHP_STAT_ANON_FAULT_FALLBACK,
|
||||
MTHP_STAT_ANON_FAULT_FALLBACK_CHARGE,
|
||||
MTHP_STAT_ZSWPOUT,
|
||||
MTHP_STAT_SWPIN,
|
||||
MTHP_STAT_SWPOUT,
|
||||
MTHP_STAT_SWPOUT_FALLBACK,
|
||||
MTHP_STAT_SHMEM_ALLOC,
|
||||
|
@ -616,6 +616,7 @@ DEFINE_MTHP_STAT_ATTR(anon_fault_alloc, MTHP_STAT_ANON_FAULT_ALLOC);
|
||||
DEFINE_MTHP_STAT_ATTR(anon_fault_fallback, MTHP_STAT_ANON_FAULT_FALLBACK);
|
||||
DEFINE_MTHP_STAT_ATTR(anon_fault_fallback_charge, MTHP_STAT_ANON_FAULT_FALLBACK_CHARGE);
|
||||
DEFINE_MTHP_STAT_ATTR(zswpout, MTHP_STAT_ZSWPOUT);
|
||||
DEFINE_MTHP_STAT_ATTR(swpin, MTHP_STAT_SWPIN);
|
||||
DEFINE_MTHP_STAT_ATTR(swpout, MTHP_STAT_SWPOUT);
|
||||
DEFINE_MTHP_STAT_ATTR(swpout_fallback, MTHP_STAT_SWPOUT_FALLBACK);
|
||||
#ifdef CONFIG_SHMEM
|
||||
@ -635,6 +636,7 @@ static struct attribute *anon_stats_attrs[] = {
|
||||
&anon_fault_fallback_charge_attr.attr,
|
||||
#ifndef CONFIG_SHMEM
|
||||
&zswpout_attr.attr,
|
||||
&swpin_attr.attr,
|
||||
&swpout_attr.attr,
|
||||
&swpout_fallback_attr.attr,
|
||||
#endif
|
||||
@ -666,6 +668,7 @@ static struct attribute_group file_stats_attr_grp = {
|
||||
static struct attribute *any_stats_attrs[] = {
|
||||
#ifdef CONFIG_SHMEM
|
||||
&zswpout_attr.attr,
|
||||
&swpin_attr.attr,
|
||||
&swpout_attr.attr,
|
||||
&swpout_fallback_attr.attr,
|
||||
#endif
|
||||
|
@ -495,6 +495,7 @@ static void sio_read_complete(struct kiocb *iocb, long ret)
|
||||
for (p = 0; p < sio->pages; p++) {
|
||||
struct folio *folio = page_folio(sio->bvec[p].bv_page);
|
||||
|
||||
count_mthp_stat(folio_order(folio), MTHP_STAT_SWPIN);
|
||||
count_memcg_folio_events(folio, PSWPIN, folio_nr_pages(folio));
|
||||
folio_mark_uptodate(folio);
|
||||
folio_unlock(folio);
|
||||
@ -589,6 +590,7 @@ static void swap_read_folio_bdev_sync(struct folio *folio,
|
||||
* attempt to access it in the page fault retry time check.
|
||||
*/
|
||||
get_task_struct(current);
|
||||
count_mthp_stat(folio_order(folio), MTHP_STAT_SWPIN);
|
||||
count_memcg_folio_events(folio, PSWPIN, folio_nr_pages(folio));
|
||||
count_vm_events(PSWPIN, folio_nr_pages(folio));
|
||||
submit_bio_wait(&bio);
|
||||
@ -605,6 +607,7 @@ static void swap_read_folio_bdev_async(struct folio *folio,
|
||||
bio->bi_iter.bi_sector = swap_folio_sector(folio);
|
||||
bio->bi_end_io = end_swap_bio_read;
|
||||
bio_add_folio_nofail(bio, folio, folio_size(folio), 0);
|
||||
count_mthp_stat(folio_order(folio), MTHP_STAT_SWPIN);
|
||||
count_memcg_folio_events(folio, PSWPIN, folio_nr_pages(folio));
|
||||
count_vm_events(PSWPIN, folio_nr_pages(folio));
|
||||
submit_bio(bio);
|
||||
|
Loading…
Reference in New Issue
Block a user