5fce802722
Add linux/cpu.h for cpumask_*() functions found in wireless drivers and make sure cpu_online_mask is always initialised. Sponsored by: The FreeBSD Foundation MFC after: 2 weeks Reviewed by: hselasky Differential Revision: https://reviews.freebsd.org/D30421
77 lines
2.3 KiB
C
77 lines
2.3 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 2020-2021 The FreeBSD Foundation
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*
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* This software was developed by Björn Zeeb under sponsorship from
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* the FreeBSD Foundation.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef __LKPI_LINUX_CPU_H
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#define __LKPI_LINUX_CPU_H
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#include <sys/types.h>
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#include <sys/systm.h>
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#include <sys/cpuset.h>
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#include <sys/smp.h>
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#include <linux/compiler.h>
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#include <linux/slab.h>
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typedef cpuset_t cpumask_t;
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extern cpumask_t cpu_online_mask;
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static __inline int
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cpumask_next(int cpuid, cpumask_t mask)
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{
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/*
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* -1 can be an input to cpuid according to logic in drivers
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* but is never a valid cpuid in a set!
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*/
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KASSERT((cpuid >= -1 && cpuid <= MAXCPU), ("%s: invalid cpuid %d\n",
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__func__, cpuid));
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KASSERT(!CPU_EMPTY(&mask), ("%s: empty CPU mask", __func__));
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do {
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cpuid++;
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#ifdef SMP
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if (cpuid > mp_maxid)
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#endif
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cpuid = 0;
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} while (!CPU_ISSET(cpuid, &mask));
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return (cpuid);
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}
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static __inline void
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cpumask_set_cpu(int cpu, cpumask_t *mask)
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{
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CPU_SET(cpu, mask);
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}
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#endif /* __LKPI_LINUX_CPU_H */
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