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authorLee Schermerhorn <lee.schermerhorn@hp.com>2008-10-18 20:26:40 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-10-20 08:50:26 -0700
commitbbfd28eee9fbd73e780b19beb3dc562befbb94fa (patch)
tree0e810fcd61501ef57e613a737593067b0bc61d40 /include
parent894bc310419ac95f4fa4142dc364401a7e607f65 (diff)
unevictable lru: add event counting with statistics
Fix to unevictable-lru-page-statistics.patch Add unevictable lru infrastructure vm events to the statistics patch. Rename the "NORECL_" and "noreclaim_" symbols and text strings to "UNEVICTABLE_" and "unevictable_", respectively. Currently, both the infrastructure and the mlocked pages event are added by a single patch later in the series. This makes it difficult to add or rework the incremental patches. The events actually "belong" with the stats, so pull them up to here. Also, restore the event counting to putback_lru_page(). This was removed from previous patch in series where it was "misplaced". The actual events weren't defined that early. Signed-off-by: Lee Schermerhorn <lee.schermerhorn@hp.com> Cc: Rik van Riel <riel@redhat.com> Reviewed-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include')
-rw-r--r--include/linux/vmstat.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/vmstat.h b/include/linux/vmstat.h
index ff5179f2b153..135840cd7feb 100644
--- a/include/linux/vmstat.h
+++ b/include/linux/vmstat.h
@@ -41,6 +41,11 @@ enum vm_event_item { PGPGIN, PGPGOUT, PSWPIN, PSWPOUT,
#ifdef CONFIG_HUGETLB_PAGE
HTLB_BUDDY_PGALLOC, HTLB_BUDDY_PGALLOC_FAIL,
#endif
+#ifdef CONFIG_UNEVICTABLE_LRU
+ UNEVICTABLE_PGCULLED, /* culled to noreclaim list */
+ UNEVICTABLE_PGSCANNED, /* scanned for reclaimability */
+ UNEVICTABLE_PGRESCUED, /* rescued from noreclaim list */
+#endif
NR_VM_EVENT_ITEMS
};