diff options
Diffstat (limited to 'sys/kern/kern_exit.c')
| -rw-r--r-- | sys/kern/kern_exit.c | 28 |
1 files changed, 17 insertions, 11 deletions
diff --git a/sys/kern/kern_exit.c b/sys/kern/kern_exit.c index ab2f0de086d..570aa737f2f 100644 --- a/sys/kern/kern_exit.c +++ b/sys/kern/kern_exit.c @@ -1,4 +1,4 @@ -/* $OpenBSD: kern_exit.c,v 1.178 2019/06/21 09:39:48 visa Exp $ */ +/* $OpenBSD: kern_exit.c,v 1.179 2019/11/02 05:31:20 visa Exp $ */ /* $NetBSD: kern_exit.c,v 1.39 1996/04/22 01:38:25 christos Exp $ */ /* @@ -367,21 +367,27 @@ struct mutex deadproc_mutex = struct proclist deadproc = LIST_HEAD_INITIALIZER(deadproc); /* - * We are called from cpu_exit() once it is safe to schedule the - * dead process's resources to be freed. + * Move dead procs from the CPU's local list to the reaper list and + * wake up the reaper. * - * NOTE: One must be careful with locking in this routine. It's - * called from a critical section in machine-dependent code, so - * we should refrain from changing any interrupt state. - * - * We lock the deadproc list, place the proc on that list (using - * the p_hash member), and wake up the reaper. + * This is called once it is safe to free the resources of dead processes. */ void -exit2(struct proc *p) +dispatch_deadproc(void) { + struct proc *dead; + struct schedstate_percpu *spc = &curcpu()->ci_schedstate; + + if (LIST_EMPTY(&spc->spc_deadproc)) + return; + + KERNEL_ASSERT_UNLOCKED(); + mtx_enter(&deadproc_mutex); - LIST_INSERT_HEAD(&deadproc, p, p_hash); + while ((dead = LIST_FIRST(&spc->spc_deadproc)) != NULL) { + LIST_REMOVE(dead, p_hash); + LIST_INSERT_HEAD(&deadproc, dead, p_hash); + } mtx_leave(&deadproc_mutex); wakeup(&deadproc); |