mm: oom analysis: add per-zone statistics to show_free_areas() (4a0aa73f) · Commits · 戴 / test

show_free_areas() displays only a limited amount of zone counters. This patch includes additional counters in the display to allow easier debugging. This may be especially useful if an OOM is due to running out of DMA memory. Signed-off-by:

KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Reviewed-by:

Christoph Lameter <cl@linux-foundation.org> Acked-by:

Wu Fengguang <fengguang.wu@intel.com> Reviewed-by:

Minchan Kim <minchan.kim@gmail.com> Reviewed-by:

Rik van Riel <riel@redhat.com> Cc: David Rientjes <rientjes@google.com> Signed-off-by:

Andrew Morton <akpm@linux-foundation.org> Signed-off-by:

Linus Torvalds <torvalds@linux-foundation.org>

mm/page_alloc.c

+20 −0

Original line number	Diff line number	Diff line
		@@ -2170,6 +2170,16 @@ void show_free_areas(void)
		" inactive_file:%lukB"
		" unevictable:%lukB"
		" present:%lukB"
		" mlocked:%lukB"
		" dirty:%lukB"
		" writeback:%lukB"
		" mapped:%lukB"
		" slab_reclaimable:%lukB"
		" slab_unreclaimable:%lukB"
		" pagetables:%lukB"
		" unstable:%lukB"
		" bounce:%lukB"
		" writeback_tmp:%lukB"
		" pages_scanned:%lu"
		" all_unreclaimable? %s"
		"\n",
		@@ -2184,6 +2194,16 @@ void show_free_areas(void)
		K(zone_page_state(zone, NR_INACTIVE_FILE)),
		K(zone_page_state(zone, NR_UNEVICTABLE)),
		K(zone->present_pages),
		K(zone_page_state(zone, NR_MLOCK)),
		K(zone_page_state(zone, NR_FILE_DIRTY)),
		K(zone_page_state(zone, NR_WRITEBACK)),
		K(zone_page_state(zone, NR_FILE_MAPPED)),
		K(zone_page_state(zone, NR_SLAB_RECLAIMABLE)),
		K(zone_page_state(zone, NR_SLAB_UNRECLAIMABLE)),
		K(zone_page_state(zone, NR_PAGETABLE)),
		K(zone_page_state(zone, NR_UNSTABLE_NFS)),
		K(zone_page_state(zone, NR_BOUNCE)),
		K(zone_page_state(zone, NR_WRITEBACK_TEMP)),
		zone->pages_scanned,
		(zone_is_all_unreclaimable(zone) ? "yes" : "no")
		);

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