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22 lines
705 B
Diff
22 lines
705 B
Diff
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
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Date: Sat, 27 May 2017 19:02:06 +0200
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Subject: kernel/sched: add {put|get}_cpu_light()
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Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
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---
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include/linux/smp.h | 3 +++
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1 file changed, 3 insertions(+)
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--- a/include/linux/smp.h
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+++ b/include/linux/smp.h
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@@ -238,6 +238,9 @@ static inline int get_boot_cpu_id(void)
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#define get_cpu() ({ preempt_disable(); __smp_processor_id(); })
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#define put_cpu() preempt_enable()
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+#define get_cpu_light() ({ migrate_disable(); __smp_processor_id(); })
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+#define put_cpu_light() migrate_enable()
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+
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/*
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* Callback to arch code if there's nosmp or maxcpus=0 on the
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* boot command line:
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