add comment about prospective perils to previous
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@ -1,4 +1,4 @@
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/* $NetBSD: ltsleep.c,v 1.24 2009/12/20 13:49:36 pooka Exp $ */
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/* $NetBSD: ltsleep.c,v 1.25 2009/12/20 13:56:36 pooka Exp $ */
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/*
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* Copyright (c) 2007 Antti Kantee. All Rights Reserved.
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@ -35,7 +35,7 @@
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: ltsleep.c,v 1.24 2009/12/20 13:49:36 pooka Exp $");
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__KERNEL_RCSID(0, "$NetBSD: ltsleep.c,v 1.25 2009/12/20 13:56:36 pooka Exp $");
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#include <sys/param.h>
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#include <sys/kernel.h>
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@ -66,10 +66,16 @@ sleeper(struct ltsleeper *ltsp, int timo)
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/* protected by biglock */
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if (timo) {
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/*
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* Calculate wakeup-time.
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* XXX: should assert nanotime() does not block,
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* i.e. yield the cpu and/or biglock.
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*/
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ticks.tv_sec = timo / hz;
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ticks.tv_nsec = (timo % hz) * (1000000000/hz);
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nanotime(&ts);
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timespecadd(&ts, &ticks, &ts);
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if (rumpuser_cv_timedwait(ltsp->cv, rump_giantlock,
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ts.tv_sec, ts.tv_nsec) == 0)
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rv = 0;
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