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Add an assert to make sure no unexpected spinlocks are held in mi_switch

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matt 2011-04-14 05:33:20 +00:00
parent 371b6bc22e
commit 05f173a862
1 changed files with 5 additions and 2 deletions
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7
sys/kern/kern_synch.c
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@ -1,4 +1,4 @@
/* $NetBSD: kern_synch.c,v 1.286 2011/01/03 13:22:32 pooka Exp $ */
/* $NetBSD: kern_synch.c,v 1.287 2011/04/14 05:33:20 matt Exp $ */
/*-
* Copyright (c) 1999, 2000, 2004, 2006, 2007, 2008, 2009
@ -69,7 +69,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: kern_synch.c,v 1.286 2011/01/03 13:22:32 pooka Exp $");
__KERNEL_RCSID(0, "$NetBSD: kern_synch.c,v 1.287 2011/04/14 05:33:20 matt Exp $");
#include "opt_kstack.h"
#include "opt_perfctrs.h"
@ -739,6 +739,9 @@ mi_switch(lwp_t *l)
* of the last lock - we must remain at IPL_SCHED during
* the context switch.
*/
KASSERTMSG(ci->ci_mtx_count == -1,
("%s: cpu%u: ci_mtx_count (%d) != -1",
__func__, cpu_index(ci), ci->ci_mtx_count));
oldspl = MUTEX_SPIN_OLDSPL(ci);
ci->ci_mtx_count--;
lwp_unlock(l);