From 1a89eddfc1f79624e30b5906daa3ddb8e5c58a35 Mon Sep 17 00:00:00 2001
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Sat, 27 May 2017 19:02:06 +0200
Subject: [PATCH] kernel/sched: add {put|get}_cpu_light()
References: SLE Realtime Extension
Patch-mainline: Queued in subsystem maintainer repository
Git-commit: 7640c94c6053a8886b04746d3a9e9522b3813aab
Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Mel Gorman <mgorman@suse.de>
---
include/linux/smp.h | 3 +++
1 file changed, 3 insertions(+)
diff --git a/include/linux/smp.h b/include/linux/smp.h
index 510519e8a1eb..7ac9fdb5ad09 100644
--- a/include/linux/smp.h
+++ b/include/linux/smp.h
@@ -268,6 +268,9 @@ static inline int get_boot_cpu_id(void)
#define get_cpu() ({ preempt_disable(); __smp_processor_id(); })
#define put_cpu() preempt_enable()
+#define get_cpu_light() ({ migrate_disable(); __smp_processor_id(); })
+#define put_cpu_light() migrate_enable()
+
/*
* Callback to arch code if there's nosmp or maxcpus=0 on the
* boot command line: