summaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
-rw-r--r--include/linux/vm_event_item.h2
-rw-r--r--mm/compaction.c8
-rw-r--r--mm/vmstat.c3
3 files changed, 13 insertions, 0 deletions
diff --git a/include/linux/vm_event_item.h b/include/linux/vm_event_item.h
index 8aa7cb9..a1f750b 100644
--- a/include/linux/vm_event_item.h
+++ b/include/linux/vm_event_item.h
@@ -42,6 +42,8 @@ enum vm_event_item { PGPGIN, PGPGOUT, PSWPIN, PSWPOUT,
PGMIGRATE_SUCCESS, PGMIGRATE_FAIL,
#endif
#ifdef CONFIG_COMPACTION
+ COMPACTMIGRATE_SCANNED, COMPACTFREE_SCANNED,
+ COMPACTISOLATED,
COMPACTSTALL, COMPACTFAIL, COMPACTSUCCESS,
#endif
#ifdef CONFIG_HUGETLB_PAGE
diff --git a/mm/compaction.c b/mm/compaction.c
index 2c077a7..aee7443 100644
--- a/mm/compaction.c
+++ b/mm/compaction.c
@@ -356,6 +356,10 @@ static unsigned long isolate_freepages_block(struct compact_control *cc,
if (blockpfn == end_pfn)
update_pageblock_skip(cc, valid_page, total_isolated, false);
+ count_vm_events(COMPACTFREE_SCANNED, nr_scanned);
+ if (total_isolated)
+ count_vm_events(COMPACTISOLATED, total_isolated);
+
return total_isolated;
}
@@ -646,6 +650,10 @@ next_pageblock:
trace_mm_compaction_isolate_migratepages(nr_scanned, nr_isolated);
+ count_vm_events(COMPACTMIGRATE_SCANNED, nr_scanned);
+ if (nr_isolated)
+ count_vm_events(COMPACTISOLATED, nr_isolated);
+
return low_pfn;
}
diff --git a/mm/vmstat.c b/mm/vmstat.c
index 89a7fd6..3a067fa 100644
--- a/mm/vmstat.c
+++ b/mm/vmstat.c
@@ -779,6 +779,9 @@ const char * const vmstat_text[] = {
"pgmigrate_fail",
#endif
#ifdef CONFIG_COMPACTION
+ "compact_migrate_scanned",
+ "compact_free_scanned",
+ "compact_isolated",
"compact_stall",
"compact_fail",
"compact_success",
OpenPOWER on IntegriCloud