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authorZi Yan <ziy@nvidia.com>2023-10-17 19:31:29 +0300
committerAndrew Morton <akpm@linux-foundation.org>2023-10-26 02:47:13 +0300
commit49cac03a8f0a56cafa5329911564c97c130ced43 (patch)
tree988d54e00d2d2b59ae2106db9777b782414ca83e /mm
parenta259945efe6ada94087ef666e9b38f8e34ea34ba (diff)
downloadlinux-49cac03a8f0a56cafa5329911564c97c130ced43.tar.xz
mm/migrate: add nr_split to trace_mm_migrate_pages stats.
Add nr_split to trace_mm_migrate_pages for large folio (including THP) split events. [akpm@linux-foundation.org: cleanup per Huang, Ying] Link: https://lkml.kernel.org/r/20231017163129.2025214-2-zi.yan@sent.com Signed-off-by: Zi Yan <ziy@nvidia.com> Reviewed-by: "Huang, Ying" <ying.huang@intel.com> Reviewed-by: Baolin Wang <baolin.wang@linux.alibaba.com> Cc: David Hildenbrand <david@redhat.com> Cc: Huang Ying <ying.huang@intel.com> Cc: Matthew Wilcox <willy@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm')
-rw-r--r--mm/migrate.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/mm/migrate.c b/mm/migrate.c
index 53244d283c3e..125194f5af0f 100644
--- a/mm/migrate.c
+++ b/mm/migrate.c
@@ -1686,7 +1686,7 @@ static int migrate_pages_batch(struct list_head *from,
if (!ret) {
stats->nr_thp_split += is_thp;
- stats->nr_split += is_large;
+ stats->nr_split++;
break;
} else if (reason == MR_LONGTERM_PIN &&
ret == -EAGAIN) {
@@ -1979,7 +1979,8 @@ out:
count_vm_events(THP_MIGRATION_SPLIT, stats.nr_thp_split);
trace_mm_migrate_pages(stats.nr_succeeded, stats.nr_failed_pages,
stats.nr_thp_succeeded, stats.nr_thp_failed,
- stats.nr_thp_split, mode, reason);
+ stats.nr_thp_split, stats.nr_split, mode,
+ reason);
if (ret_succeeded)
*ret_succeeded = stats.nr_succeeded;