lkml.org 
[lkml]   [2007]   [Dec]   [30]   [last100]   RSS Feed
Views: [more markup]  [less markup]  [headers]  [forward] 
 
Messages in this thread
/
DateSun, 30 Dec 2007 22:54:35 +0100
FromIngo Molnar <>
SubjectRe: [PATCH] x86: provide a DMI based port 0x80 I/O delay override
* Alan Cox <alan@lxorguk.ukuu.org.uk> wrote:

> You won't bisect obscure timing triggered problems, and the _p users 
> are almost all for hardware where performance doesn't matter one iota 
> (eg CMOS).

actually, people have, and i have too. But i agree that io_delay=none 
would be stupid now, and would probably be stupid in v2.6.26 too.

i also have a debug patch that counts the number of _p() API uses and 
prints a stacktrace (once per bootup) if it occurs [wrote it 2 weeks 
ago] - so i agree with you that we can do this more gradually and more 
intelligently. As long as it does not turn into a BKL situation. It's 
2008 in a day and we've still got the NFS client code running under the 
BKL - quite ridiculous IMO.

	Ingo


\
 
 \ /
  Last update: 2007-12-30 23:05    [from the cache]
©2003-2008