patches/old/trace-vmscan-postprocess-sync-with-tracepoints-updates.patch

From: Vlastimil Babka <vbabka@suse.cz>
Subject: trace-vmscan-postprocess: sync with tracepoints updates
Date: Thu, 14 Sep 2023 15:16:38 +0200

The script has fallen behind tracepoint changes for a while, fix it up.

Most changes are mechanical (renames, removal of tracepoint parameters
that are not used by the script).  More notable change involves
mm_vmscan_lru_isolate which is relying on the isolate_mode to determine if
the inactive list is being scanned.  However the parameter currently only
indicates ISOLATE_UNMAPPED.  We can use the lru parameter instead to
determine which list is scanned, and stop checking isolate_mode.

Link: https://lkml.kernel.org/r/20230914131637.12204-3-vbabka@suse.cz
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Hugh Dickins <hughd@google.com>
Cc: Mel Gorman <mgorman@techsingularity.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 Documentation/trace/postprocess/trace-vmscan-postprocess.pl |   38 ++++------
 1 file changed, 16 insertions(+), 22 deletions(-)

--- a/Documentation/trace/postprocess/trace-vmscan-postprocess.pl~trace-vmscan-postprocess-sync-with-tracepoints-updates
+++ a/Documentation/trace/postprocess/trace-vmscan-postprocess.pl
@@ -107,14 +107,14 @@ GetOptions(
 );
 
 # Defaults for dynamically discovered regex's
-my $regex_direct_begin_default = 'order=([0-9]*) may_writepage=([0-9]*) gfp_flags=([A-Z_|]*)';
+my $regex_direct_begin_default = 'order=([0-9]*) gfp_flags=([A-Z_|]*)';
 my $regex_direct_end_default = 'nr_reclaimed=([0-9]*)';
 my $regex_kswapd_wake_default = 'nid=([0-9]*) order=([0-9]*)';
 my $regex_kswapd_sleep_default = 'nid=([0-9]*)';
-my $regex_wakeup_kswapd_default = 'nid=([0-9]*) zid=([0-9]*) order=([0-9]*) gfp_flags=([A-Z_|]*)';
-my $regex_lru_isolate_default = 'isolate_mode=([0-9]*) classzone_idx=([0-9]*) order=([0-9]*) nr_requested=([0-9]*) nr_scanned=([0-9]*) nr_skipped=([0-9]*) nr_taken=([0-9]*) lru=([a-z_]*)';
+my $regex_wakeup_kswapd_default = 'nid=([0-9]*) order=([0-9]*) gfp_flags=([A-Z_|]*)';
+my $regex_lru_isolate_default = 'isolate_mode=([0-9]*) classzone=([0-9]*) order=([0-9]*) nr_requested=([0-9]*) nr_scanned=([0-9]*) nr_skipped=([0-9]*) nr_taken=([0-9]*) lru=([a-z_]*)';
 my $regex_lru_shrink_inactive_default = 'nid=([0-9]*) nr_scanned=([0-9]*) nr_reclaimed=([0-9]*) nr_dirty=([0-9]*) nr_writeback=([0-9]*) nr_congested=([0-9]*) nr_immediate=([0-9]*) nr_activate_anon=([0-9]*) nr_activate_file=([0-9]*) nr_ref_keep=([0-9]*) nr_unmap_fail=([0-9]*) priority=([0-9]*) flags=([A-Z_|]*)';
-my $regex_lru_shrink_active_default = 'lru=([A-Z_]*) nr_scanned=([0-9]*) nr_rotated=([0-9]*) priority=([0-9]*)';
+my $regex_lru_shrink_active_default = 'lru=([A-Z_]*) nr_taken=([0-9]*) nr_active=([0-9]*) nr_deactivated=([0-9]*) nr_referenced=([0-9]*) priority=([0-9]*) flags=([A-Z_|]*)' ;
 my $regex_writepage_default = 'page=([0-9a-f]*) pfn=([0-9]*) flags=([A-Z_|]*)';
 
 # Dyanically discovered regex
@@ -184,8 +184,7 @@ sub generate_traceevent_regex {
 $regex_direct_begin = generate_traceevent_regex(
 			"vmscan/mm_vmscan_direct_reclaim_begin",
 			$regex_direct_begin_default,
-			"order", "may_writepage",
-			"gfp_flags");
+			"order", "gfp_flags");
 $regex_direct_end = generate_traceevent_regex(
 			"vmscan/mm_vmscan_direct_reclaim_end",
 			$regex_direct_end_default,
@@ -201,11 +200,11 @@ $regex_kswapd_sleep = generate_traceeven
 $regex_wakeup_kswapd = generate_traceevent_regex(
 			"vmscan/mm_vmscan_wakeup_kswapd",
 			$regex_wakeup_kswapd_default,
-			"nid", "zid", "order", "gfp_flags");
+			"nid", "order", "gfp_flags");
 $regex_lru_isolate = generate_traceevent_regex(
 			"vmscan/mm_vmscan_lru_isolate",
 			$regex_lru_isolate_default,
-			"isolate_mode", "classzone_idx", "order",
+			"isolate_mode", classzone", "order",
 			"nr_requested", "nr_scanned", "nr_skipped", "nr_taken",
 			"lru");
 $regex_lru_shrink_inactive = generate_traceevent_regex(
@@ -218,11 +217,10 @@ $regex_lru_shrink_inactive = generate_tr
 $regex_lru_shrink_active = generate_traceevent_regex(
 			"vmscan/mm_vmscan_lru_shrink_active",
 			$regex_lru_shrink_active_default,
-			"nid", "zid",
-			"lru",
-			"nr_scanned", "nr_rotated", "priority");
+			"nid", "nr_taken", "nr_active", "nr_deactivated", "nr_referenced",
+			"priority", "flags");
 $regex_writepage = generate_traceevent_regex(
-			"vmscan/mm_vmscan_writepage",
+			"vmscan/mm_vmscan_write_folio",
 			$regex_writepage_default,
 			"page", "pfn", "flags");
 
@@ -371,7 +369,7 @@ EVENT_PROCESS:
 				print "         $regex_wakeup_kswapd\n";
 				next;
 			}
-			my $order = $3;
+			my $order = $2;
 			$perprocesspid{$process_pid}->{MM_VMSCAN_WAKEUP_KSWAPD_PERORDER}[$order]++;
 		} elsif ($tracepoint eq "mm_vmscan_lru_isolate") {
 			$details = $6;
@@ -381,18 +379,14 @@ EVENT_PROCESS:
 				print "         $regex_lru_isolate/o\n";
 				next;
 			}
-			my $isolate_mode = $1;
 			my $nr_scanned = $5;
-			my $file = $8;
+			my $lru = $8;
 
-			# To closer match vmstat scanning statistics, only count isolate_both
-			# and isolate_inactive as scanning. isolate_active is rotation
-			# isolate_inactive == 1
-			# isolate_active   == 2
-			# isolate_both     == 3
-			if ($isolate_mode != 2) {
+			# To closer match vmstat scanning statistics, only count
+			# inactive lru as scanning
+			if ($lru =~ /inactive_/) {
 				$perprocesspid{$process_pid}->{HIGH_NR_SCANNED} += $nr_scanned;
-				if ($file =~ /_file/) {
+				if ($lru =~ /_file/) {
 					$perprocesspid{$process_pid}->{HIGH_NR_FILE_SCANNED} += $nr_scanned;
 				} else {
 					$perprocesspid{$process_pid}->{HIGH_NR_ANON_SCANNED} += $nr_scanned;
_