lkml.org 
[lkml]   [2004]   [Apr]   [8]   [last100]   RSS Feed
Views: [more markup]  [less markup]  [headers]  [forward] 
 
Messages in this thread
/
From kuznet@ms2 ...
SubjectRe: route cache DoS testing and softirqs
DateThu, 8 Apr 2004 17:38:27 +0400 (MSD)
Hello!

> This sounds reasonable. However as a start I was thinking at having
> hardirq run only the softirq they posted actively, and local_bh_enable
> run only the softirq that have been posted by the critical section (not
> from hardirqs happening on top of it).

To all that I remember Ingo insisted that the run from local_bh_enable() 
is necessary for softirqs triggered by hardirqs while softirqs are disabled.
Otherwise he observed random delays and redundant scheduler activity
breaking at least tux fast path.

Alexey
-
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 13:02    [from the cache]
©2003-2008