diff options
Diffstat (limited to 'sys/kern/kern_sched.c')
| -rw-r--r-- | sys/kern/kern_sched.c | 53 |
1 files changed, 51 insertions, 2 deletions
diff --git a/sys/kern/kern_sched.c b/sys/kern/kern_sched.c index 7625440b7ee..1b58a16a367 100644 --- a/sys/kern/kern_sched.c +++ b/sys/kern/kern_sched.c @@ -1,4 +1,4 @@ -/* $OpenBSD: kern_sched.c,v 1.17 2010/01/09 02:44:17 kettenis Exp $ */ +/* $OpenBSD: kern_sched.c,v 1.18 2010/04/06 20:33:28 kettenis Exp $ */ /* * Copyright (c) 2007, 2008 Artur Grabowski <art@openbsd.org> * @@ -32,7 +32,6 @@ void sched_kthreads_create(void *); -void sched_idle(void *); int sched_proc_to_cpu_cost(struct cpu_info *ci, struct proc *p); struct proc *sched_steal_proc(struct cpu_info *); @@ -546,6 +545,56 @@ sched_peg_curproc(struct cpu_info *ci) SCHED_UNLOCK(s); } +#ifdef MULTIPROCESSOR + +void +sched_start_secondary_cpus(void) +{ + CPU_INFO_ITERATOR cii; + struct cpu_info *ci; + + CPU_INFO_FOREACH(cii, ci) { + struct schedstate_percpu *spc = &ci->ci_schedstate; + + if (CPU_IS_PRIMARY(ci)) + continue; + atomic_clearbits_int(&spc->spc_schedflags, + SPCF_SHOULDHALT | SPCF_HALTED); + } +} + +void +sched_stop_secondary_cpus(void) +{ + CPU_INFO_ITERATOR cii; + struct cpu_info *ci; + + /* + * Make sure we stop the secondary CPUs. + */ + CPU_INFO_FOREACH(cii, ci) { + struct schedstate_percpu *spc = &ci->ci_schedstate; + + if (CPU_IS_PRIMARY(ci)) + continue; + atomic_setbits_int(&spc->spc_schedflags, SPCF_SHOULDHALT); + } + CPU_INFO_FOREACH(cii, ci) { + struct schedstate_percpu *spc = &ci->ci_schedstate; + struct sleep_state sls; + + if (CPU_IS_PRIMARY(ci)) + continue; + while ((spc->spc_schedflags & SPCF_HALTED) == 0) { + sleep_setup(&sls, spc, PZERO, "schedstate"); + sleep_finish(&sls, + (spc->spc_schedflags & SPCF_HALTED) == 0); + } + } +} + +#endif + /* * Functions to manipulate cpu sets. */ |