linux-kernel - [PATCH] mm: add kernel_misc_reclaimable in show_free

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Message-Id: <20210813104725.4562-1-liuhailong@oppo.com>
Date:   Fri, 13 Aug 2021 18:47:25 +0800
From:   liuhailong <liuhailong@...o.com>
To:     akpm@...ux-foundation.org
Cc:     linux-mm@...ck.org, linux-kernel@...r.kernel.org,
        liuhailong <liuhailong@...o.com>
Subject: [PATCH] mm: add kernel_misc_reclaimable in show_free_areas

print NR_KERNEL_MISC_RECLAIMABLE stat from show_free_areas
to check whether shrinker work correctly and current mem usage.

Signed-off-by: liuhailong <liuhailong@...o.com>
---
 mm/page_alloc.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 856b175c15a4..0eb29a56f349 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -5904,6 +5904,7 @@ void show_free_areas(unsigned int filter, nodemask_t *nodemask)
 		" unevictable:%lu dirty:%lu writeback:%lu\n"
 		" slab_reclaimable:%lu slab_unreclaimable:%lu\n"
 		" mapped:%lu shmem:%lu pagetables:%lu bounce:%lu\n"
+		" kernel_misc_reclaimable:%lu\n"
 		" free:%lu free_pcp:%lu free_cma:%lu\n",
 		global_node_page_state(NR_ACTIVE_ANON),
 		global_node_page_state(NR_INACTIVE_ANON),
@@ -5920,6 +5921,7 @@ void show_free_areas(unsigned int filter, nodemask_t *nodemask)
 		global_node_page_state(NR_SHMEM),
 		global_node_page_state(NR_PAGETABLE),
 		global_zone_page_state(NR_BOUNCE),
+		global_node_page_state(NR_KERNEL_MISC_RECLAIMABLE),
 		global_zone_page_state(NR_FREE_PAGES),
 		free_pcp,
 		global_zone_page_state(NR_FREE_CMA_PAGES));
-- 
2.17.1