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/*-
* SPDX-License-Identifier: BSD-2-Clause
*
* Copyright (c) 2020-2021 The FreeBSD Foundation
*
* This software was developed by Björn Zeeb under sponsorship from
* the FreeBSD Foundation.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef _LINUXKPI_LINUX_CPU_H
#define _LINUXKPI_LINUX_CPU_H
#include <sys/types.h>
#include <sys/systm.h>
#include <sys/cpuset.h>
#include <sys/smp.h>
#include <linux/compiler.h>
#include <linux/slab.h>
typedef cpuset_t cpumask_t;
extern cpumask_t cpu_online_mask;
cpumask_t *lkpi_get_static_single_cpu_mask(int);
static __inline int
cpumask_next(int cpuid, cpumask_t mask)
{
/*
* -1 can be an input to cpuid according to logic in drivers
* but is never a valid cpuid in a set!
*/
KASSERT((cpuid >= -1 && cpuid <= MAXCPU), ("%s: invalid cpuid %d\n",
__func__, cpuid));
KASSERT(!CPU_EMPTY(&mask), ("%s: empty CPU mask", __func__));
do {
cpuid++;
#ifdef SMP
if (cpuid > mp_maxid)
#endif
cpuid = 0;
} while (!CPU_ISSET(cpuid, &mask));
return (cpuid);
}
static __inline void
cpumask_set_cpu(int cpu, cpumask_t *mask)
{
CPU_SET(cpu, mask);
}
#define cpumask_of(_cpu) (lkpi_get_static_single_cpu_mask(_cpu))
#endif /* _LINUXKPI_LINUX_CPU_H */
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