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Split sys_lwp_suspend, just like sys_lwp_unsuspend is split. We get

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sys_lwp_suspend, with the sanity checks, and lwp_suspend, with the
actual implementation.
This commit is contained in:
manu 2003-12-24 22:42:11 +00:00
parent 5786d9fb02
commit 54db0e51ad
2 changed files with 20 additions and 6 deletions
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23
sys/kern/kern_lwp.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: kern_lwp.c,v 1.16 2003/12/20 18:22:17 manu Exp $ */
/* $NetBSD: kern_lwp.c,v 1.17 2003/12/24 22:42:11 manu Exp $ */
/*-
* Copyright (c) 2001 The NetBSD Foundation, Inc.
@ -37,7 +37,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: kern_lwp.c,v 1.16 2003/12/20 18:22:17 manu Exp $");
__KERNEL_RCSID(0, "$NetBSD: kern_lwp.c,v 1.17 2003/12/24 22:42:11 manu Exp $");
#include "opt_multiprocessor.h"
@ -177,8 +177,8 @@ sys__lwp_suspend(struct lwp *l, void *v, register_t *retval)
} */ *uap = v;
int target_lid;
struct proc *p = l->l_proc;
struct lwp *t, *t2;
int s;
struct lwp *t;
struct lwp *t2;
target_lid = SCARG(uap, target);
@ -201,11 +201,24 @@ sys__lwp_suspend(struct lwp *l, void *v, register_t *retval)
if (t2 == NULL) /* All other LWPs are suspended */
return (EDEADLK);
}
return lwp_suspend(l, t);
}
inline int
lwp_suspend(l, t)
struct lwp *l;
struct lwp *t;
{
struct proc *p = t->l_proc;
int s;
if (t == l) {
SCHED_LOCK(s);
l->l_stat = LSSUSPENDED;
/* XXX NJWLWP check if this makes sense here: */
l->l_proc->p_stats->p_ru.ru_nvcsw++;
p->p_stats->p_ru.ru_nvcsw++;
mi_switch(l, NULL);
SCHED_ASSERT_UNLOCKED();
splx(s);

3
sys/sys/lwp.h
View File

@ -1,4 +1,4 @@
/* $NetBSD: lwp.h,v 1.15 2003/12/20 18:22:16 manu Exp $ */
/* $NetBSD: lwp.h,v 1.16 2003/12/24 22:42:11 manu Exp $ */
/*-
* Copyright (c) 2001 The NetBSD Foundation, Inc.
@ -181,6 +181,7 @@ void upcallret(struct lwp *);
void lwp_exit (struct lwp *);
void lwp_exit2 (struct lwp *);
struct lwp *proc_representative_lwp(struct proc *);
inline int lwp_suspend(struct lwp *, struct lwp *);
#endif /* _KERNEL */
/* Flags for _lwp_create(), as per Solaris. */