1 /* $NetBSD: kthread.h,v 1.14 2020/08/01 02:04:55 riastradh Exp $ */ 2 3 /*- 4 * Copyright (c) 1998, 2007, 2009 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 9 * NASA Ames Research Center, and by Andrew Doran. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 #ifndef _SYS_KTHREAD_H_ 34 #define _SYS_KTHREAD_H_ 35 36 #if !defined(_KERNEL) 37 #error "not supposed to be exposed to userland" 38 #endif 39 40 /* 41 * Kernel thread handling. 42 */ 43 44 #include <sys/proc.h> 45 46 #define KTHREAD_IDLE 0x01 /* Do not run on creation */ 47 #define KTHREAD_MPSAFE 0x02 /* Do not acquire kernel_lock */ 48 #define KTHREAD_INTR 0x04 /* Software interrupt handler */ 49 #define KTHREAD_TS 0x08 /* Time-sharing priority range */ 50 #define KTHREAD_MUSTJOIN 0x10 /* Must join on exit */ 51 52 void kthread_sysinit(void); 53 54 int kthread_create(pri_t, int, struct cpu_info *, 55 void (*)(void *), void *, lwp_t **, const char *, ...) __printflike(7, 8); 56 void kthread_exit(int) __dead; 57 int kthread_join(lwp_t *); 58 59 int kthread_fpu_enter(void); 60 void kthread_fpu_exit(int); 61 62 /* Internal MD routines -- for use only by kthread_fpu_enter/exit. */ 63 void kthread_fpu_enter_md(void); 64 void kthread_fpu_exit_md(void); 65 66 #endif /* _SYS_KTHREAD_H_ */ 67