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arrr, implement softint_disestablish(). this code be needin' an enema, matey.

This commit is contained in:
pooka 2009-09-19 14:18:01 +00:00
parent 961dc58afe
commit 64d32972db
1 changed files with 26 additions and 10 deletions
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36
sys/rump/librump/rumpkern/intr.c
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@ -1,4 +1,4 @@
/* $NetBSD: intr.c,v 1.17 2009/04/26 20:44:50 pooka Exp $ */
/* $NetBSD: intr.c,v 1.18 2009/09/19 14:18:01 pooka Exp $ */
/*
* Copyright (c) 2008 Antti Kantee. All Rights Reserved.
@ -26,7 +26,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: intr.c,v 1.17 2009/04/26 20:44:50 pooka Exp $");
__KERNEL_RCSID(0, "$NetBSD: intr.c,v 1.18 2009/09/19 14:18:01 pooka Exp $");
#include <sys/param.h>
#include <sys/cpu.h>
@ -44,11 +44,13 @@ __KERNEL_RCSID(0, "$NetBSD: intr.c,v 1.17 2009/04/26 20:44:50 pooka Exp $");
time_t time_uptime = 0;
#define SI_MPSAFE 0x01
#define SI_ONLIST 0x02
#define SI_KILLME 0x04
struct softint {
void (*si_func)(void *);
void *si_arg;
bool si_onlist;
bool si_mpsafe;
int si_flags;
LIST_ENTRY(softint) si_entries;
};
@ -174,10 +176,12 @@ sithread(void *arg)
si = LIST_FIRST(&si_pending);
func = si->si_func;
funarg = si->si_arg;
mpsafe = si->si_mpsafe;
mpsafe = si->si_flags & SI_MPSAFE;
si->si_onlist = false;
si->si_flags &= ~SI_ONLIST;
LIST_REMOVE(si, si_entries);
if (si->si_flags & SI_KILLME)
softint_disestablish(si);
} else {
cv_wait(&si_cv, &si_mtx);
continue;
@ -246,8 +250,7 @@ softint_establish(u_int flags, void (*func)(void *), void *arg)
si = kmem_alloc(sizeof(*si), KM_SLEEP);
si->si_func = func;
si->si_arg = arg;
si->si_onlist = false;
si->si_mpsafe = flags & SOFTINT_MPSAFE;
si->si_flags = flags & SOFTINT_MPSAFE ? SI_MPSAFE : 0;
return si;
}
@ -261,15 +264,28 @@ softint_schedule(void *arg)
si->si_func(si->si_arg);
} else {
mutex_enter(&si_mtx);
if (!si->si_onlist) {
if (!(si->si_flags & SI_ONLIST)) {
LIST_INSERT_HEAD(&si_pending, si, si_entries);
si->si_onlist = true;
si->si_flags |= SI_ONLIST;
}
cv_signal(&si_cv);
mutex_exit(&si_mtx);
}
}
/* flimsy disestablish: should wait for softints to finish */
void
softint_disestablish(void *cook)
{
struct softint *si = cook;
if (si->si_flags & SI_ONLIST) {
si->si_flags |= SI_KILLME;
return;
}
kmem_free(si, sizeof(*si));
}
bool
cpu_intr_p(void)
{