From d5b510eb13fdfdddaad81c817ef5f6d06c996063 Mon Sep 17 00:00:00 2001
From: Colin Cross <ccross@android.com>
Date: Mon, 14 Jul 2014 14:31:15 -0700
Subject: [PATCH] lmkd: make lmkd SCHED_FIFO

If kswapd runs more than lmkd it may throw away all page cache pages
before lmkd gets a chance to kill a process.  Make lmkd SCHED_FIFO
so it can react quickly to kernel low memory notifications.

Bug: 16236289
Change-Id: I46767b4ec81ef8638d0c9e47d168a68b62e3cac5
---
 lmkd.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/lmkd.c b/lmkd.c
index a952855..a1261d1 100644
--- a/lmkd.c
+++ b/lmkd.c
@@ -748,7 +748,12 @@ static void mainloop(void) {
 }
 
 int main(int argc __unused, char **argv __unused) {
+    struct sched_param param = {
+            .sched_priority = 1,
+    };
+
     mlockall(MCL_FUTURE);
+    sched_setscheduler(0, SCHED_FIFO, &param);
     if (!init())
         mainloop();