mm: show node_pages_scanned per node, not zone (33e077bd) · Commits · 戴 / test

The node_pages_scanned represents the number of scanned pages of node for reclaim so it's pointless to show it as kilobytes. As well, node_pages_scanned is per-node value, not per-zone. This patch changes node_pages_scanned per-zone-killobytes with per-node-count. [minchan@kernel.org: fix node_pages_scanned] Link: http://lkml.kernel.org/r/20160716101431.GA10305@bbox Link: http://lkml.kernel.org/r/1468588165-12461-5-git-send-email-mgorman@techsingularity.net Signed-off-by:

mm/page_alloc.c

+3 −3

Original line number	Diff line number	Diff line
		@@ -4313,6 +4313,7 @@ void show_free_areas(unsigned int filter)
		#endif
		" writeback_tmp:%lukB"
		" unstable:%lukB"
		" pages_scanned:%lu"
		" all_unreclaimable? %s"
		"\n",
		pgdat->node_id,
		@@ -4335,6 +4336,7 @@ void show_free_areas(unsigned int filter)
		K(node_page_state(pgdat, NR_SHMEM)),
		K(node_page_state(pgdat, NR_WRITEBACK_TEMP)),
		K(node_page_state(pgdat, NR_UNSTABLE_NFS)),
		node_page_state(pgdat, NR_PAGES_SCANNED),
		!pgdat_reclaimable(pgdat) ? "yes" : "no");
		}

		@@ -4365,7 +4367,6 @@ void show_free_areas(unsigned int filter)
		" free_pcp:%lukB"
		" local_pcp:%ukB"
		" free_cma:%lukB"
		" node_pages_scanned:%lu"
		"\n",
		zone->name,
		K(zone_page_state(zone, NR_FREE_PAGES)),
		@@ -4383,8 +4384,7 @@ void show_free_areas(unsigned int filter)
		K(zone_page_state(zone, NR_BOUNCE)),
		K(free_pcp),
		K(this_cpu_read(zone->pageset->pcp.count)),
		K(zone_page_state(zone, NR_FREE_CMA_PAGES)),
		K(node_page_state(zone->zone_pgdat, NR_PAGES_SCANNED)));
		K(zone_page_state(zone, NR_FREE_CMA_PAGES)));
		printk("lowmem_reserve[]:");
		for (i = 0; i < MAX_NR_ZONES; i++)
		printk(" %ld", zone->lowmem_reserve[i]);