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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
commit7b854121eb3e5ba0241882ff939e2c485228c9c5 (patch)
treee553bc3b3c2be3b36cfcce5219b2ef85646ea495 /mm
parentbbfd28eee9fbd73e780b19beb3dc562befbb94fa (diff)
downloadconfigs-7b854121eb3e5ba0241882ff939e2c485228c9c5.tar.gz
Unevictable LRU Page Statistics
Report unevictable pages per zone and system wide. Kosaki Motohiro added support for memory controller unevictable statistics. [riel@redhat.com: fix printk in show_free_areas()] [akpm@linux-foundation.org: fix units in /proc/vmstats] Signed-off-by: Lee Schermerhorn <lee.schermerhorn@hp.com> Signed-off-by: Rik van Riel <riel@redhat.com> Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Debugged-by: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm')
-rw-r--r--mm/memcontrol.c6
-rw-r--r--mm/page_alloc.c18
-rw-r--r--mm/vmstat.c3
3 files changed, 25 insertions, 2 deletions
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 82c065e7551..e93a4db93fb 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -1006,6 +1006,7 @@ static int mem_control_stat_show(struct cgroup *cont, struct cftype *cft,
{
unsigned long active_anon, inactive_anon;
unsigned long active_file, inactive_file;
+ unsigned long unevictable;
inactive_anon = mem_cgroup_get_all_zonestat(mem_cont,
LRU_INACTIVE_ANON);
@@ -1015,10 +1016,15 @@ static int mem_control_stat_show(struct cgroup *cont, struct cftype *cft,
LRU_INACTIVE_FILE);
active_file = mem_cgroup_get_all_zonestat(mem_cont,
LRU_ACTIVE_FILE);
+ unevictable = mem_cgroup_get_all_zonestat(mem_cont,
+ LRU_UNEVICTABLE);
+
cb->fill(cb, "active_anon", (active_anon) * PAGE_SIZE);
cb->fill(cb, "inactive_anon", (inactive_anon) * PAGE_SIZE);
cb->fill(cb, "active_file", (active_file) * PAGE_SIZE);
cb->fill(cb, "inactive_file", (inactive_file) * PAGE_SIZE);
+ cb->fill(cb, "unevictable", unevictable * PAGE_SIZE);
+
}
return 0;
}
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 79c0981b1d3..4125230a1b2 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -1864,13 +1864,21 @@ void show_free_areas(void)
}
}
- printk("Active_anon:%lu active_file:%lu inactive_anon%lu\n"
- " inactive_file:%lu dirty:%lu writeback:%lu unstable:%lu\n"
+ printk("Active_anon:%lu active_file:%lu inactive_anon:%lu\n"
+ " inactive_file:%lu"
+//TODO: check/adjust line lengths
+#ifdef CONFIG_UNEVICTABLE_LRU
+ " unevictable:%lu"
+#endif
+ " dirty:%lu writeback:%lu unstable:%lu\n"
" free:%lu slab:%lu mapped:%lu pagetables:%lu bounce:%lu\n",
global_page_state(NR_ACTIVE_ANON),
global_page_state(NR_ACTIVE_FILE),
global_page_state(NR_INACTIVE_ANON),
global_page_state(NR_INACTIVE_FILE),
+#ifdef CONFIG_UNEVICTABLE_LRU
+ global_page_state(NR_UNEVICTABLE),
+#endif
global_page_state(NR_FILE_DIRTY),
global_page_state(NR_WRITEBACK),
global_page_state(NR_UNSTABLE_NFS),
@@ -1897,6 +1905,9 @@ void show_free_areas(void)
" inactive_anon:%lukB"
" active_file:%lukB"
" inactive_file:%lukB"
+#ifdef CONFIG_UNEVICTABLE_LRU
+ " unevictable:%lukB"
+#endif
" present:%lukB"
" pages_scanned:%lu"
" all_unreclaimable? %s"
@@ -1910,6 +1921,9 @@ void show_free_areas(void)
K(zone_page_state(zone, NR_INACTIVE_ANON)),
K(zone_page_state(zone, NR_ACTIVE_FILE)),
K(zone_page_state(zone, NR_INACTIVE_FILE)),
+#ifdef CONFIG_UNEVICTABLE_LRU
+ K(zone_page_state(zone, NR_UNEVICTABLE)),
+#endif
K(zone->present_pages),
zone->pages_scanned,
(zone_is_all_unreclaimable(zone) ? "yes" : "no")
diff --git a/mm/vmstat.c b/mm/vmstat.c
index 6cb08cdd4f0..6db2f631931 100644
--- a/mm/vmstat.c
+++ b/mm/vmstat.c
@@ -623,6 +623,9 @@ static const char * const vmstat_text[] = {
"nr_active_anon",
"nr_inactive_file",
"nr_active_file",
+#ifdef CONFIG_UNEVICTABLE_LRU
+ "nr_unevictable",
+#endif
"nr_anon_pages",
"nr_mapped",
"nr_file_pages",