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cv_wakeup: the entire queue has to be searched, as we can't know how many 

waiters there are.
This commit is contained in:
ad 2007-08-02 22:01:40 +00:00
parent 1ef79ebc7d
commit a363c5f5b2
1 changed files with 4 additions and 8 deletions
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12
sys/kern/kern_condvar.c
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@ -1,4 +1,4 @@
/* $NetBSD: kern_condvar.c,v 1.11 2007/08/01 23:21:14 ad Exp $ */
/* $NetBSD: kern_condvar.c,v 1.12 2007/08/02 22:01:40 ad Exp $ */
/*-
* Copyright (c) 2006, 2007 The NetBSD Foundation, Inc.
@ -45,7 +45,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: kern_condvar.c,v 1.11 2007/08/01 23:21:14 ad Exp $");
__KERNEL_RCSID(0, "$NetBSD: kern_condvar.c,v 1.12 2007/08/02 22:01:40 ad Exp $");
#include <sys/param.h>
#include <sys/proc.h>
@ -353,14 +353,10 @@ void
cv_wakeup(kcondvar_t *cv)
{
sleepq_t *sq;
u_int cnt;
sq = sleeptab_lookup(&sleeptab, cv);
if ((cnt = cv->cv_waiters) != 0) {
cv->cv_waiters = 0;
sleepq_wake(sq, cv, cnt);
} else
sleepq_unlock(sq);
cv->cv_waiters = 0;
sleepq_wake(sq, cv, (u_int)-1);
}
/*