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Commit 4a0aa73f authored by KOSAKI Motohiro's avatar KOSAKI Motohiro Committed by Linus Torvalds
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mm: oom analysis: add per-zone statistics to show_free_areas() 



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: default avatarKOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Reviewed-by: default avatarChristoph Lameter <cl@linux-foundation.org>
Acked-by: default avatarWu Fengguang <fengguang.wu@intel.com>
Reviewed-by: default avatarMinchan Kim <minchan.kim@gmail.com>
Reviewed-by: default avatarRik van Riel <riel@redhat.com>
Cc: David Rientjes <rientjes@google.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 3b2b9a87

mm/page_alloc.c

+20 −0
Original line number Original line Diff line number Diff line
@@ -2170,6 +2170,16 @@ void show_free_areas(void) 
			" inactive_file:%lukB"

			" inactive_file:%lukB"

			" unevictable:%lukB"

			" unevictable:%lukB"

			" present:%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"

			" pages_scanned:%lu"

			" all_unreclaimable? %s"

			" all_unreclaimable? %s"

			"\n",

			"\n",
@@ -2184,6 +2194,16 @@ void show_free_areas(void) 
			K(zone_page_state(zone, NR_INACTIVE_FILE)),

			K(zone_page_state(zone, NR_INACTIVE_FILE)),

			K(zone_page_state(zone, NR_UNEVICTABLE)),

			K(zone_page_state(zone, NR_UNEVICTABLE)),

			K(zone->present_pages),

			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->pages_scanned,

			(zone_is_all_unreclaimable(zone) ? "yes" : "no")

			(zone_is_all_unreclaimable(zone) ? "yes" : "no")

			);

			);