From: Yu Zhao <yuzhao@xxxxxxxxxx>
The removed stats, MM_LEAF_OLD and MM_NONLEAF_TOTAL, are not very
helpful and become more complicated to properly compute when adding
test/clear_young() notifiers in MGLRU's mm walk.
Signed-off-by: Yu Zhao <yuzhao@xxxxxxxxxx>
Signed-off-by: James Houghton <jthoughton@xxxxxxxxxx>
---
include/linux/mmzone.h | 2 --
mm/vmscan.c | 14 +++++---------
2 files changed, 5 insertions(+), 11 deletions(-)
diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index 96dea31fb211..691c635d8d1f 100644
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -460,9 +460,7 @@ struct lru_gen_folio {
enum {
MM_LEAF_TOTAL, /* total leaf entries */
- MM_LEAF_OLD, /* old leaf entries */
MM_LEAF_YOUNG, /* young leaf entries */
- MM_NONLEAF_TOTAL, /* total non-leaf entries */
MM_NONLEAF_FOUND, /* non-leaf entries found in Bloom filters */
MM_NONLEAF_ADDED, /* non-leaf entries added to Bloom filters */
NR_MM_STATS
diff --git a/mm/vmscan.c b/mm/vmscan.c
index 2d0486189804..60669f8bba46 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -3405,7 +3405,6 @@ static bool walk_pte_range(pmd_t *pmd, unsigned long start, unsigned long end,
continue;
if (!pte_young(ptent)) {
- walk->mm_stats[MM_LEAF_OLD]++;
continue;
}
@@ -3558,7 +3557,6 @@ static void walk_pmd_range(pud_t *pud, unsigned long start, unsigned long end,
walk->mm_stats[MM_LEAF_TOTAL]++;
if (!pmd_young(val)) {
- walk->mm_stats[MM_LEAF_OLD]++;
continue;
}
@@ -3570,8 +3568,6 @@ static void walk_pmd_range(pud_t *pud, unsigned long start, unsigned long end,
continue;
}
- walk->mm_stats[MM_NONLEAF_TOTAL]++;
-
if (!walk->force_scan && should_clear_pmd_young()) {
if (!pmd_young(val))
continue;
@@ -5262,11 +5258,11 @@ static void lru_gen_seq_show_full(struct seq_file *m, struct lruvec *lruvec,
for (tier = 0; tier < MAX_NR_TIERS; tier++) {
seq_printf(m, " %10d", tier);
for (type = 0; type < ANON_AND_FILE; type++) {
- const char *s = " ";
+ const char *s = "xxx";
unsigned long n[3] = {};
if (seq == max_seq) {
- s = "RT ";
+ s = "RTx";
n[0] = READ_ONCE(lrugen->avg_refaulted[type][tier]);
n[1] = READ_ONCE(lrugen->avg_total[type][tier]);
} else if (seq == min_seq[type] || NR_HIST_GENS > 1) {
@@ -5288,14 +5284,14 @@ static void lru_gen_seq_show_full(struct seq_file *m, struct lruvec *lruvec,
seq_puts(m, " ");
for (i = 0; i < NR_MM_STATS; i++) {
- const char *s = " ";
+ const char *s = "xxxx";
unsigned long n = 0;
if (seq == max_seq && NR_HIST_GENS == 1) {
- s = "LOYNFA";
+ s = "TYFA";
n = READ_ONCE(mm_state->stats[hist][i]);
} else if (seq != max_seq && NR_HIST_GENS > 1) {
- s = "loynfa";
+ s = "tyfa";
n = READ_ONCE(mm_state->stats[hist][i]);
}
--
2.47.0.105.g07ac214952-goog
