linux-kernel - [PATCH 1/4] mm, page_alloc: do not report all nodes in show

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Date:   Tue, 17 Jan 2017 10:15:40 +0100
From:   Michal Hocko <mhocko@...nel.org>
To:     Andrew Morton <akpm@...ux-foundation.org>
Cc:     Johannes Weiner <hannes@...xchg.org>, Mel Gorman <mgorman@...e.de>,
        Vlastimil Babka <vbabka@...e.cz>,
        David Rientjes <rientjes@...gle.com>, <linux-mm@...ck.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Michal Hocko <mhocko@...e.com>
Subject: [PATCH 1/4] mm, page_alloc: do not report all nodes in show_mem

From: Michal Hocko <mhocko@...e.com>

599d0c954f91 ("mm, vmscan: move LRU lists to node") has added per numa
node statistics to show_mem but it forgot to add skip_free_areas_node
to fileter out nodes which are outside of the allocating task numa
policy. Add this check to not pollute the output with the pointless
information.

Acked-by: Mel Gorman <mgorman@...e.de>
Acked-by: Johannes Weiner <hannes@...xchg.org>
Signed-off-by: Michal Hocko <mhocko@...e.com>
---
 mm/page_alloc.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 8ff25883c172..8f4f306d804c 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -4345,6 +4345,9 @@ void show_free_areas(unsigned int filter)
 		global_page_state(NR_FREE_CMA_PAGES));
 
 	for_each_online_pgdat(pgdat) {
+		if (skip_free_areas_node(filter, pgdat->node_id))
+			continue;
+
 		printk("Node %d"
 			" active_anon:%lukB"
 			" inactive_anon:%lukB"
-- 
2.11.0