1*5fce8027SBjoern A. Zeeb /*- 2*5fce8027SBjoern A. Zeeb * SPDX-License-Identifier: BSD-2-Clause 3*5fce8027SBjoern A. Zeeb * 4*5fce8027SBjoern A. Zeeb * Copyright (c) 2020-2021 The FreeBSD Foundation 5*5fce8027SBjoern A. Zeeb * 6*5fce8027SBjoern A. Zeeb * This software was developed by Björn Zeeb under sponsorship from 7*5fce8027SBjoern A. Zeeb * the FreeBSD Foundation. 8*5fce8027SBjoern A. Zeeb * 9*5fce8027SBjoern A. Zeeb * Redistribution and use in source and binary forms, with or without 10*5fce8027SBjoern A. Zeeb * modification, are permitted provided that the following conditions 11*5fce8027SBjoern A. Zeeb * are met: 12*5fce8027SBjoern A. Zeeb * 1. Redistributions of source code must retain the above copyright 13*5fce8027SBjoern A. Zeeb * notice, this list of conditions and the following disclaimer. 14*5fce8027SBjoern A. Zeeb * 2. Redistributions in binary form must reproduce the above copyright 15*5fce8027SBjoern A. Zeeb * notice, this list of conditions and the following disclaimer in the 16*5fce8027SBjoern A. Zeeb * documentation and/or other materials provided with the distribution. 17*5fce8027SBjoern A. Zeeb * 18*5fce8027SBjoern A. Zeeb * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 19*5fce8027SBjoern A. Zeeb * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20*5fce8027SBjoern A. Zeeb * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21*5fce8027SBjoern A. Zeeb * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 22*5fce8027SBjoern A. Zeeb * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23*5fce8027SBjoern A. Zeeb * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24*5fce8027SBjoern A. Zeeb * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25*5fce8027SBjoern A. Zeeb * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26*5fce8027SBjoern A. Zeeb * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27*5fce8027SBjoern A. Zeeb * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28*5fce8027SBjoern A. Zeeb * SUCH DAMAGE. 29*5fce8027SBjoern A. Zeeb * 30*5fce8027SBjoern A. Zeeb * $FreeBSD$ 31*5fce8027SBjoern A. Zeeb */ 32*5fce8027SBjoern A. Zeeb 33*5fce8027SBjoern A. Zeeb #ifndef __LKPI_LINUX_CPU_H 34*5fce8027SBjoern A. Zeeb #define __LKPI_LINUX_CPU_H 35*5fce8027SBjoern A. Zeeb 36*5fce8027SBjoern A. Zeeb #include <sys/types.h> 37*5fce8027SBjoern A. Zeeb #include <sys/systm.h> 38*5fce8027SBjoern A. Zeeb #include <sys/cpuset.h> 39*5fce8027SBjoern A. Zeeb #include <sys/smp.h> 40*5fce8027SBjoern A. Zeeb #include <linux/compiler.h> 41*5fce8027SBjoern A. Zeeb #include <linux/slab.h> 42*5fce8027SBjoern A. Zeeb 43*5fce8027SBjoern A. Zeeb typedef cpuset_t cpumask_t; 44*5fce8027SBjoern A. Zeeb 45*5fce8027SBjoern A. Zeeb extern cpumask_t cpu_online_mask; 46*5fce8027SBjoern A. Zeeb 47*5fce8027SBjoern A. Zeeb static __inline int 48*5fce8027SBjoern A. Zeeb cpumask_next(int cpuid, cpumask_t mask) 49*5fce8027SBjoern A. Zeeb { 50*5fce8027SBjoern A. Zeeb 51*5fce8027SBjoern A. Zeeb /* 52*5fce8027SBjoern A. Zeeb * -1 can be an input to cpuid according to logic in drivers 53*5fce8027SBjoern A. Zeeb * but is never a valid cpuid in a set! 54*5fce8027SBjoern A. Zeeb */ 55*5fce8027SBjoern A. Zeeb KASSERT((cpuid >= -1 && cpuid <= MAXCPU), ("%s: invalid cpuid %d\n", 56*5fce8027SBjoern A. Zeeb __func__, cpuid)); 57*5fce8027SBjoern A. Zeeb KASSERT(!CPU_EMPTY(&mask), ("%s: empty CPU mask", __func__)); 58*5fce8027SBjoern A. Zeeb 59*5fce8027SBjoern A. Zeeb do { 60*5fce8027SBjoern A. Zeeb cpuid++; 61*5fce8027SBjoern A. Zeeb #ifdef SMP 62*5fce8027SBjoern A. Zeeb if (cpuid > mp_maxid) 63*5fce8027SBjoern A. Zeeb #endif 64*5fce8027SBjoern A. Zeeb cpuid = 0; 65*5fce8027SBjoern A. Zeeb } while (!CPU_ISSET(cpuid, &mask)); 66*5fce8027SBjoern A. Zeeb return (cpuid); 67*5fce8027SBjoern A. Zeeb } 68*5fce8027SBjoern A. Zeeb 69*5fce8027SBjoern A. Zeeb static __inline void 70*5fce8027SBjoern A. Zeeb cpumask_set_cpu(int cpu, cpumask_t *mask) 71*5fce8027SBjoern A. Zeeb { 72*5fce8027SBjoern A. Zeeb 73*5fce8027SBjoern A. Zeeb CPU_SET(cpu, mask); 74*5fce8027SBjoern A. Zeeb } 75*5fce8027SBjoern A. Zeeb 76*5fce8027SBjoern A. Zeeb #endif /* __LKPI_LINUX_CPU_H */ 77