linux-kernel - [PATCH 2/4] mm: vmstat: account per-zone stalls and pages skipped during reclaim -fix

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Date:	Wed, 13 Jul 2016 11:00:02 +0100
From:	Mel Gorman <mgorman@...hsingularity.net>
To:	Andrew Morton <akpm@...ux-foundation.org>,
	Linux-MM <linux-mm@...ck.org>
Cc:	Johannes Weiner <hannes@...xchg.org>,
	Minchan Kim <minchan@...nel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Mel Gorman <mgorman@...hsingularity.net>
Subject: [PATCH 2/4] mm: vmstat: account per-zone stalls and pages skipped during reclaim -fix

As pointed out by Johannes -- the PG prefix seems to stand for page, and
all stat names that contain it represent some per-page event. PGSTALL is
not a page event. This patch renames it.

This is a fix for the mmotm patch
mm-vmstat-account-per-zone-stalls-and-pages-skipped-during-reclaim.patch

Signed-off-by: Mel Gorman <mgorman@...hsingularity.net>
---
 include/linux/vm_event_item.h | 2 +-
 mm/vmscan.c                   | 2 +-
 mm/vmstat.c                   | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/include/linux/vm_event_item.h b/include/linux/vm_event_item.h
index 6d47f66f0e9c..4d6ec58a8d45 100644
--- a/include/linux/vm_event_item.h
+++ b/include/linux/vm_event_item.h
@@ -23,7 +23,7 @@
 
 enum vm_event_item { PGPGIN, PGPGOUT, PSWPIN, PSWPOUT,
 		FOR_ALL_ZONES(PGALLOC),
-		FOR_ALL_ZONES(PGSTALL),
+		FOR_ALL_ZONES(ALLOCSTALL),
 		FOR_ALL_ZONES(PGSCAN_SKIP),
 		PGFREE, PGACTIVATE, PGDEACTIVATE,
 		PGFAULT, PGMAJFAULT,
diff --git a/mm/vmscan.c b/mm/vmscan.c
index 21eae17ee730..429bf3a9c06c 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -2674,7 +2674,7 @@ static unsigned long do_try_to_free_pages(struct zonelist *zonelist,
 	delayacct_freepages_start();
 
 	if (global_reclaim(sc))
-		__count_zid_vm_events(PGSTALL, sc->reclaim_idx, 1);
+		__count_zid_vm_events(ALLOCSTALL, sc->reclaim_idx, 1);
 
 	do {
 		vmpressure_prio(sc->gfp_mask, sc->target_mem_cgroup,
diff --git a/mm/vmstat.c b/mm/vmstat.c
index 7415775faf08..91ecca96dcae 100644
--- a/mm/vmstat.c
+++ b/mm/vmstat.c
@@ -980,7 +980,7 @@ const char * const vmstat_text[] = {
 	"pswpout",
 
 	TEXTS_FOR_ZONES("pgalloc")
-	TEXTS_FOR_ZONES("pgstall")
+	TEXTS_FOR_ZONES("allocstall")
 	TEXTS_FOR_ZONES("pgskip")
 
 	"pgfree",
-- 
2.6.4