From 37359cbc08f0106ff480515c1e54244ec14a9b7f 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 089/158] kernel/sched: add {put|get}_cpu_light()
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
include/linux/smp.h | 3 +++
1 file changed, 3 insertions(+)
Index: linux-5.15.19-rt29/include/linux/smp.h
===================================================================
@ linux-5.15.19-rt29/include/linux/smp.h:271 @ 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: