1 files changed, 10 insertions, 1 deletions

diff --git a/Documentation/trace/postprocess/trace-vmscan-postprocess.pl b/Documentation/trace/postprocess/trace-vmscan-postprocess.pl
index b3e73ddb1567..12cecc83cd91 100644
--- a/Documentation/trace/postprocess/trace-vmscan-postprocess.pl
+++ b/Documentation/trace/postprocess/trace-vmscan-postprocess.pl
@@ -373,9 +373,18 @@ EVENT_PROCESS:
                                 print "         $regex_lru_isolate/o\n";
                                 next;
                         }
+                        my $isolate_mode = $1;
                         my $nr_scanned = $4;
                         my $nr_contig_dirty = $7;
-                        $perprocesspid{$process_pid}->{HIGH_NR_SCANNED} += $nr_scanned;
+
+                        # To closer match vmstat scanning statistics, only count isolate_both
+                        # and isolate_inactive as scanning. isolate_active is rotation
+                        # isolate_inactive == 0
+                        # isolate_active   == 1
+                        # isolate_both     == 2
+                        if ($isolate_mode != 1) {
+                                $perprocesspid{$process_pid}->{HIGH_NR_SCANNED} += $nr_scanned;
+                        }
                         $perprocesspid{$process_pid}->{HIGH_NR_CONTIG_DIRTY} += $nr_contig_dirty;
                 } elsif ($tracepoint eq "mm_vmscan_lru_shrink_inactive") {
                         $details = $5;