The patch titled
Subject: mm: workingset: add vmstat counter for shadow nodes
has been added to the -mm tree. Its filename is
mm-workingset-add-vmstat-counter-for-shadow-nodes.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-workingset-add-vmstat-counter-for-shadow-nodes.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-workingset-add-vmstat-counter-for-shadow-nodes.patch
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The -mm tree is included into linux-next and is updated
there every 3-4 working days
------------------------------------------------------
From: Johannes Weiner <hannes@xxxxxxxxxxx>
Subject: mm: workingset: add vmstat counter for shadow nodes
Make it easier to catch bugs in the shadow node shrinker by adding a
counter for the shadow nodes in circulation.
Link: http://lkml.kernel.org/r/20181009184732.762-4-hannes@xxxxxxxxxxx
Signed-off-by: Johannes Weiner <hannes@xxxxxxxxxxx>
Reviewed-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Cc: Rik van Riel <riel@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/mmzone.h | 1 +
mm/vmstat.c | 1 +
mm/workingset.c | 12 ++++++++++--
3 files changed, 12 insertions(+), 2 deletions(-)
--- a/include/linux/mmzone.h~mm-workingset-add-vmstat-counter-for-shadow-nodes
+++ a/include/linux/mmzone.h
@@ -161,6 +161,7 @@ enum node_stat_item {
NR_SLAB_UNRECLAIMABLE,
NR_ISOLATED_ANON, /* Temporary isolated pages from anon lru */
NR_ISOLATED_FILE, /* Temporary isolated pages from file lru */
+ WORKINGSET_NODES,
WORKINGSET_REFAULT,
WORKINGSET_ACTIVATE,
WORKINGSET_RESTORE,
--- a/mm/vmstat.c~mm-workingset-add-vmstat-counter-for-shadow-nodes
+++ a/mm/vmstat.c
@@ -1143,6 +1143,7 @@ const char * const vmstat_text[] = {
"nr_slab_unreclaimable",
"nr_isolated_anon",
"nr_isolated_file",
+ "workingset_nodes",
"workingset_refault",
"workingset_activate",
"workingset_restore",
--- a/mm/workingset.c~mm-workingset-add-vmstat-counter-for-shadow-nodes
+++ a/mm/workingset.c
@@ -378,11 +378,17 @@ void workingset_update_node(struct radix
* as node->private_list is protected by the i_pages lock.
*/
if (node->count && node->count == node->exceptional) {
- if (list_empty(&node->private_list))
+ if (list_empty(&node->private_list)) {
list_lru_add(&shadow_nodes, &node->private_list);
+ __inc_lruvec_page_state(virt_to_page(node),
+ WORKINGSET_NODES);
+ }
} else {
- if (!list_empty(&node->private_list))
+ if (!list_empty(&node->private_list)) {
list_lru_del(&shadow_nodes, &node->private_list);
+ __dec_lruvec_page_state(virt_to_page(node),
+ WORKINGSET_NODES);
+ }
}
}
@@ -473,6 +479,8 @@ static enum lru_status shadow_lru_isolat
}
list_lru_isolate(lru, item);
+ __dec_lruvec_page_state(virt_to_page(node), WORKINGSET_NODES);
+
spin_unlock(lru_lock);
/*
_
Patches currently in -mm which might be from hannes@xxxxxxxxxxx are
mm-workingset-dont-drop-refault-information-prematurely-fix.patch
mm-workingset-tell-cache-transitions-from-workingset-thrashing.patch
delayacct-track-delays-from-thrashing-cache-pages.patch
sched-loadavg-consolidate-load_int-load_frac-calc_load.patch
sched-loadavg-consolidate-load_int-load_frac-calc_load-fix-fix.patch
sched-loadavg-make-calc_load_n-public.patch
sched-schedh-make-rq-locking-and-clock-functions-available-in-statsh.patch
sched-introduce-this_rq_lock_irq.patch
psi-pressure-stall-information-for-cpu-memory-and-io.patch
psi-pressure-stall-information-for-cpu-memory-and-io-fix.patch
psi-pressure-stall-information-for-cpu-memory-and-io-fix-2.patch
psi-pressure-stall-information-for-cpu-memory-and-io-fix-3.patch
psi-pressure-stall-information-for-cpu-memory-and-io-fix-4.patch
psi-cgroup-support.patch
mm-workingset-use-cheaper-__inc_lruvec_state-in-irqsafe-node-reclaim.patch
mm-workingset-add-vmstat-counter-for-shadow-nodes.patch
mm-zero-seek-shrinkers.patch
