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yield: don't drop priority to zero. libpthread doesn't make much use of

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this any more but applications do and it now pessimizes benchmarks.
This commit is contained in:
ad 2008-04-02 17:38:16 +00:00
parent c4f793a0d0
commit 42bc09155e
1 changed files with 2 additions and 9 deletions
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11
sys/kern/kern_synch.c
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@ -1,4 +1,4 @@
/* $NetBSD: kern_synch.c,v 1.221 2008/03/17 16:54:51 ad Exp $ */ /* $NetBSD: kern_synch.c,v 1.222 2008/04/02 17:38:16 ad Exp $ */
/*- /*-
* Copyright (c) 1999, 2000, 2004, 2006, 2007, 2008 The NetBSD Foundation, Inc. * Copyright (c) 1999, 2000, 2004, 2006, 2007, 2008 The NetBSD Foundation, Inc.
@ -75,7 +75,7 @@
*/ */
#include <sys/cdefs.h> #include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: kern_synch.c,v 1.221 2008/03/17 16:54:51 ad Exp $"); __KERNEL_RCSID(0, "$NetBSD: kern_synch.c,v 1.222 2008/04/02 17:38:16 ad Exp $");
#include "opt_kstack.h" #include "opt_kstack.h"
#include "opt_lockdebug.h" #include "opt_lockdebug.h"
@ -298,13 +298,6 @@ yield(void)
KASSERT(lwp_locked(l, l->l_cpu->ci_schedstate.spc_lwplock)); KASSERT(lwp_locked(l, l->l_cpu->ci_schedstate.spc_lwplock));
KASSERT(l->l_stat == LSONPROC); KASSERT(l->l_stat == LSONPROC);
l->l_kpriority = false; l->l_kpriority = false;
if (l->l_class == SCHED_OTHER) {
/*
* Only for timeshared threads. It will be reset
* by the scheduler in due course.
*/
l->l_priority = 0;
}
(void)mi_switch(l); (void)mi_switch(l);
KERNEL_LOCK(l->l_biglocks, l); KERNEL_LOCK(l->l_biglocks, l);
} }