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schedclk() -> schedclock(), for consistency with hardclock(), statclock(), ... 

update comments for recent scheduler mods
This commit is contained in:
ross 1999-02-28 18:14:57 +00:00
parent 91d6272def
commit e47e3c9f45
4 changed files with 24 additions and 23 deletions
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6
sys/arch/alpha/alpha/interrupt.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: interrupt.c,v 1.37 1999/02/24 23:35:25 thorpej Exp $ */
/* $NetBSD: interrupt.c,v 1.38 1999/02/28 18:14:57 ross Exp $ */
/*
* Copyright (c) 1994, 1995, 1996 Carnegie-Mellon University.
@ -37,7 +37,7 @@
#include <sys/cdefs.h> /* RCS ID & Copyright macro defns */
__KERNEL_RCSID(0, "$NetBSD: interrupt.c,v 1.37 1999/02/24 23:35:25 thorpej Exp $");
__KERNEL_RCSID(0, "$NetBSD: interrupt.c,v 1.38 1999/02/28 18:14:57 ross Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@ -130,7 +130,7 @@ interrupt(a0, a1, a2, framep)
if((++schedclk2 & 0x3f) == 0
&& (p = curproc) != NULL
&& schedhz)
schedclk(p);
schedclock(p);
}
break;

10
sys/kern/kern_clock.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: kern_clock.c,v 1.46 1999/02/23 17:41:48 mycroft Exp $ */
/* $NetBSD: kern_clock.c,v 1.47 1999/02/28 18:14:57 ross Exp $ */
/*-
* Copyright (c) 1982, 1986, 1991, 1993
@ -919,7 +919,7 @@ statclock(frame)
register struct gmonparam *g;
register int i;
#endif
static int schedclk2;
static int schedclk;
register struct proc *p;
if (CLKF_USERMODE(frame)) {
@ -981,12 +981,12 @@ statclock(frame)
if (p != NULL) {
++p->p_cpticks;
/*
* If no schedclk is provided, call it here at ~~12-25 Hz,
* If no schedclock is provided, call it here at ~~12-25 Hz,
* ~~16 Hz is best
*/
if(schedhz == 0)
if ((++schedclk2 & 3) == 0)
schedclk(p);
if ((++schedclk & 3) == 0)
schedclock(p);
}
}

27
sys/kern/kern_synch.c
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@ -1,4 +1,4 @@
/* $NetBSD: kern_synch.c,v 1.55 1999/02/23 02:56:03 ross Exp $ */
/* $NetBSD: kern_synch.c,v 1.56 1999/02/28 18:14:57 ross Exp $ */
/*-
* Copyright (c) 1982, 1986, 1990, 1991, 1993
@ -723,21 +723,22 @@ resetpriority(p)
}
/*
* We adjust the priority of the current process. The priority of
* a process gets worse as it accumulates CPU time. The cpu usage
* estimator (p_estcpu) is increased here. The formula for computing
* priorities (in kern_synch.c) will compute a different value each
* time p_estcpu increases by 4. The cpu usage estimator ramps up
* quite quickly when the process is running (linearly), and decays
* away exponentially, at a rate which is proportionally slower when
* the system is busy. The basic principal is that the system will
* 90% forget that the process used a lot of CPU time in 5 * loadav
* seconds. This causes the system to favor processes which haven't
* run much recently, and to round-robin among other processes.
* We adjust the priority of the current process. The priority of a process
* gets worse as it accumulates CPU time. The cpu usage estimator (p_estcpu)
* is increased here. The formula for computing priorities (in kern_synch.c)
* will compute a different value each time p_estcpu increases. This can
* cause a switch, but unless the priority crosses a PPQ boundary the actual
* queue will not change. The cpu usage estimator ramps up quite quickly
* when the process is running (linearly), and decays away exponentially, at
* a rate which is proportionally slower when the system is busy. The basic
* principal is that the system will 90% forget that the process used a lot
* of CPU time in 5 * loadav seconds. This causes the system to favor
* processes which haven't run much recently, and to round-robin among other
* processes.
*/
void
schedclk(p)
schedclock(p)
struct proc *p;
{
p->p_estcpu = ESTCPULIM(p->p_estcpu + 1);

4
sys/sys/sched.h
View File

@ -1,4 +1,4 @@
/* $NetBSD: sched.h,v 1.1 1999/02/23 02:56:04 ross Exp $ */
/* $NetBSD: sched.h,v 1.2 1999/02/28 18:14:58 ross Exp $ */
/*-
* Copyright (c) 1999 The NetBSD Foundation, Inc.
@ -92,7 +92,7 @@
int schedhz; /* ideally: 16 */
#ifdef _SYS_PROC_H_
void schedclk __P((struct proc *p));
void schedclock __P((struct proc *p));
static __inline void scheduler_fork_hook __P((
struct proc *parent, struct proc *child));
static __inline void scheduler_wait_hook __P((