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selwakeup: convert a while() loop into a do/while() since the first test 

isn't needed.
This commit is contained in:
ad 2008-03-29 14:08:35 +00:00
parent 96a6231c10
commit bd9b59aafe
1 changed files with 4 additions and 4 deletions
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8
sys/kern/sys_select.c
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@ -1,4 +1,4 @@
/* $NetBSD: sys_select.c,v 1.2 2008/03/27 18:30:15 ad Exp $ */
/* $NetBSD: sys_select.c,v 1.3 2008/03/29 14:08:35 ad Exp $ */
/*-
* Copyright (c) 2007, 2008 The NetBSD Foundation, Inc.
@ -77,7 +77,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: sys_select.c,v 1.2 2008/03/27 18:30:15 ad Exp $");
__KERNEL_RCSID(0, "$NetBSD: sys_select.c,v 1.3 2008/03/29 14:08:35 ad Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@ -663,14 +663,14 @@ selnotify(struct selinfo *sip, int events, long knhint)
* inform all potentially interested waiters.
*/
sip->sel_collision = 0;
while (__predict_false(mask != 0)) {
do {
index = ffs(mask) - 1;
mask &= ~(1 << index);
sc = cpu_lookup_byindex(index)->ci_data.cpu_selcpu;
mutex_spin_enter(&sc->sc_lock);
sc->sc_ncoll++;
sleepq_wake(&sc->sc_sleepq, sc, (u_int)-1);
}
} while (__predict_false(mask != 0));
}
}