lkml.org 
[lkml]   [2004]   [Oct]   [21]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
SubjectRe: [patch] Real-Time Preemption, -RT-2.6.9-rc4-mm1-U8
From
On Thu, Oct 21, 2004 at 12:11:03PM +0200, Jens Axboe wrote:
> I didn't look at the USB code, I'm just saying that it's perfectly valid
> use of a semaphore the pattern you describe (process A holding it,
> process B releasing it).

A lot of things are perfectly "valid" in the Linux kernel regarding
stuff like that are a bit irregular. But the preemption work about
to stress these things in ways that was never designed to which is
why these patches are needed. Having a clear use of various locking
conventions is key to getting this system to behave in a predictable
manner. Quite simply, Linux was never targetted to do this and the
sloppiness is showing so it's got to be removed.

bill

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 14:07    [W:1.170 / U:0.632 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site