lkml.org 
[lkml]   [2007]   [Nov]   [13]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [PATCH, RFC] improved hacks to allow -rt to run kernbench on POWER
From
Date

On Tue, 2007-11-13 at 11:05 +0100, Peter Zijlstra wrote:

> Anyway, it seems its the generic irq stuff that uses raw_spinlock_t and
> disables IRQs, so there isn't much we can do from the ARCH level I'm
> afraid :-(
>
> Ingo, any sane ideas?

Ok benh came up with a workable idea, he just needs a night's sleep to
come up with the details :-)

The idea is to fill the radix tree from host->ops->map() (or
irq_create_mapping()) as that should still be preemptable, and then
convert all other uses to RCU lookups.



-
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: 2007-11-13 12:01    [W:0.111 / U:0.444 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site