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lwp_lock_retry: return a pointer to the lock acquired. No functional change.

This commit is contained in:
ad 2008-06-16 09:45:20 +00:00
parent 54a1f88f19
commit b7f5063255
2 changed files with 7 additions and 5 deletions
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8
sys/kern/kern_lwp.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: kern_lwp.c,v 1.118 2008/06/16 01:41:20 rmind Exp $ */
/* $NetBSD: kern_lwp.c,v 1.119 2008/06/16 09:45:20 ad Exp $ */
/*-
* Copyright (c) 2001, 2006, 2007, 2008 The NetBSD Foundation, Inc.
@ -206,7 +206,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: kern_lwp.c,v 1.118 2008/06/16 01:41:20 rmind Exp $");
__KERNEL_RCSID(0, "$NetBSD: kern_lwp.c,v 1.119 2008/06/16 09:45:20 ad Exp $");
#include "opt_ddb.h"
#include "opt_lockdebug.h"
@ -1206,7 +1206,7 @@ lwp_locked(struct lwp *l, kmutex_t *mtx)
/*
* Lock an LWP.
*/
void
kmutex_t *
lwp_lock_retry(struct lwp *l, kmutex_t *old)
{
@ -1233,6 +1233,8 @@ lwp_lock_retry(struct lwp *l, kmutex_t *old)
#else
} while (__predict_false(l->l_mutex != old));
#endif
return old;
}
/*

4
sys/sys/lwp.h
View File

@ -1,4 +1,4 @@
/* $NetBSD: lwp.h,v 1.99 2008/06/15 20:32:57 christos Exp $ */
/* $NetBSD: lwp.h,v 1.100 2008/06/16 09:45:20 ad Exp $ */
/*-
* Copyright (c) 2001, 2006, 2007, 2008 The NetBSD Foundation, Inc.
@ -265,7 +265,7 @@ void lwp_startup(lwp_t *, lwp_t *);
int lwp_locked(lwp_t *, kmutex_t *);
void lwp_setlock(lwp_t *, kmutex_t *);
void lwp_unlock_to(lwp_t *, kmutex_t *);
void lwp_lock_retry(lwp_t *, kmutex_t *);
kmutex_t *lwp_lock_retry(lwp_t *, kmutex_t *);
void lwp_relock(lwp_t *, kmutex_t *);
int lwp_trylock(lwp_t *);
void lwp_addref(lwp_t *);