Aren
/
NetBSD
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Under control of "slowchild" global, make child process inherit the 

scheduling penalty for being cpu-bound (p_estcpu) of its parent.
This commit is contained in:
sommerfe 1999-01-23 17:02:35 +00:00
parent 6484a78535
commit 068dd91745
1 changed files with 9 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
sys/kern/kern_fork.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: kern_fork.c,v 1.50 1998/11/11 22:44:25 thorpej Exp $ */
/* $NetBSD: kern_fork.c,v 1.51 1999/01/23 17:02:35 sommerfe Exp $ */
/*
* Copyright (c) 1982, 1986, 1989, 1991, 1993
@ -111,6 +111,8 @@ sys___vfork14(p, v, retval)
return (fork1(p, FORK_PPWAIT|FORK_SHAREVM, retval, NULL));
}
int slowchild = 1;
int
fork1(p1, flags, retval, rnewprocp)
register struct proc *p1;
@ -276,6 +278,12 @@ again:
p2->p_cred->p_refcnt = 1;
crhold(p1->p_ucred);
/*
* slow us down if parent was cpu-bound
*/
if (slowchild)
p2->p_estcpu = p1->p_estcpu;
/* bump references to the text vnode (for procfs) */
p2->p_textvp = p1->p_textvp;
if (p2->p_textvp)