linux-kernel - [PATCH] android: lmk: add swap pte pmd in tasksize

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Date:	Fri, 11 Mar 2016 15:23:52 +0800
From:	Lu Bing <albert.lubing@...ilicon.com>
To:	<gregkh@...uxfoundation.org>, <arve@...roid.com>,
	<riandrews@...roid.com>, <devel@...verdev.osuosl.org>,
	<linux-kernel@...r.kernel.org>, <kirill.shutemov@...ux.intel.com>
CC:	<albert.lubing@...ilicon.com>, <suzhuangluan@...ilicon.com>,
	<yudongbin@...ilicon.com>, <xuyiping@...ilicon.com>,
	<chenxiang9@...wei.com>, <oliver.fu@...ilicon.com>,
	<liuzixing@...wei.com>, <shimingxing@...ilicon.com>,
	<alan.wei@...ilicon.com>, <saberlily.xia@...ilicon.com>,
	<puck.chen@...ilicon.com>, <dan.zhao@...ilicon.com>,
	<linuxarm@...wei.com>
Subject: [PATCH] android: lmk: add swap pte pmd in tasksize

From: l00215322 <albert.lubing@...ilicon.com>

Many android devices have zram,so we should add "MM_SWAPENTS" in tasksize.
Refer oom_kill.c,we add pte&pmd also.

Reviewed-by: Chen Feng <puck.chen@...ilicon.com>
Reviewed-by: Fu Jun <oliver.fu@...ilicon.com>
Reviewed-by: Xu YiPing <xuyiping@...ilicon.com>
Reviewed-by: Yu DongBin <yudongbin@...ilicon.com>
Signed-off-by: Lu Bing <albert.lubing@...ilicon.com>
---
 drivers/staging/android/lowmemorykiller.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/staging/android/lowmemorykiller.c b/drivers/staging/android/lowmemorykiller.c
index 8b5a4a8..0817d3b 100644
--- a/drivers/staging/android/lowmemorykiller.c
+++ b/drivers/staging/android/lowmemorykiller.c
@@ -139,7 +139,9 @@ static unsigned long lowmem_scan(struct shrinker *s, struct shrink_control *sc)
 			task_unlock(p);
 			continue;
 		}
-		tasksize = get_mm_rss(p->mm);
+		tasksize = get_mm_rss(p->mm) +
+			get_mm_counter(p->mm, MM_SWAPENTS) +
+			atomic_long_read(&p->mm->nr_ptes) + mm_nr_pmds(p->mm);
 		task_unlock(p);
 		if (tasksize <= 0)
 			continue;
-- 
1.8.3.2