The patch titled
Subject: zsmalloc: extend compaction statistics
has been added to the -mm mm-unstable branch. Its filename is
zsmalloc-extend-compaction-statistics.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/zsmalloc-extend-compaction-statistics.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: Sergey Senozhatsky <senozhatsky@xxxxxxxxxxxx>
Subject: zsmalloc: extend compaction statistics
Date: Thu, 23 Feb 2023 12:04:50 +0900
Extend zsmalloc zs_pool_stats with a new member that holds the number of
objects pool compaction moved between pool pages.
Link: https://lkml.kernel.org/r/20230223030451.543162-6-senozhatsky@xxxxxxxxxxxx
Signed-off-by: Sergey Senozhatsky <senozhatsky@xxxxxxxxxxxx>
Cc: Minchan Kim <minchan@xxxxxxxxxx>
Cc: Yosry Ahmed <yosryahmed@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/zsmalloc.h | 2 ++
mm/zsmalloc.c | 1 +
2 files changed, 3 insertions(+)
--- a/include/linux/zsmalloc.h~zsmalloc-extend-compaction-statistics
+++ a/include/linux/zsmalloc.h
@@ -36,6 +36,8 @@ enum zs_mapmode {
struct zs_pool_stats {
/* How many pages were migrated (freed) */
atomic_long_t pages_compacted;
+ /* How many objects were migrated during compaction */
+ atomic_long_t objs_moved;
};
struct zs_pool;
--- a/mm/zsmalloc.c~zsmalloc-extend-compaction-statistics
+++ a/mm/zsmalloc.c
@@ -1815,6 +1815,7 @@ static void migrate_zspage(struct zs_poo
obj_idx++;
record_obj(handle, free_obj);
obj_free(class->size, used_obj, NULL);
+ atomic_long_inc(&pool->stats.objs_moved);
}
/* Remember last position in this iteration */
_
Patches currently in -mm which might be from senozhatsky@xxxxxxxxxxxx are
zsmalloc-remove-insert_zspage-inuse-optimization.patch
zsmalloc-remove-stat-and-fullness-enums.patch
zsmalloc-fine-grained-inuse-ratio-based-fullness-grouping.patch
zsmalloc-rework-compaction-algorithm.patch
zsmalloc-extend-compaction-statistics.patch
zram-show-zsmalloc-objs_moved-stat-in-mm_stat.patch
