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6472a2dcc4
Use the per-cpu CIF_ENABLED_WAIT flag to decide if an interrupt occurred while a cpu was idle, instead of checking two conditions within the old psw. Also move clearing of the CIF_ENABLED_WAIT bit to the early interrupt handler, which in turn makes arch_vcpu_is_preempted() also a bit more precise, since the flag is now cleared before interrupt handlers have been called. Reviewed-by: Sven Schnelle <svens@linux.ibm.com> Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
27 lines
614 B
C
27 lines
614 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright IBM Corp. 2014
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*
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* Author: Martin Schwidefsky <schwidefsky@de.ibm.com>
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*/
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#ifndef _S390_IDLE_H
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#define _S390_IDLE_H
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#include <linux/types.h>
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#include <linux/device.h>
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struct s390_idle_data {
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unsigned long idle_count;
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unsigned long idle_time;
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unsigned long clock_idle_enter;
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unsigned long timer_idle_enter;
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unsigned long mt_cycles_enter[8];
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};
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extern struct device_attribute dev_attr_idle_count;
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extern struct device_attribute dev_attr_idle_time_us;
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void psw_idle(struct s390_idle_data *data, unsigned long psw_mask);
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#endif /* _S390_IDLE_H */
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