lkml.org 
[lkml]   [2005]   [Mar]   [24]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH] add a clear_pages function to clear pages of higher order
On Thu, 24 Mar 2005, David Mosberger wrote:

> That's definitely the case. See my earlier post on this topic:
>
> http://www.gelato.unsw.edu.au/linux-ia64/0409/11012.html
>
> Unfortunately, nobody reported any results for larger machines and/or
> more interesting workloads, so the patch is in limbo at this time.
> Clearly, if the CPU that's clearing the page is likely to use that
> same page soon after, it'd be useful to use temporal stores.


So it would be useful to have

clear_page -> Temporal. Only zaps one page

and

clear_pages -> Zaps arbitrary order of page non-temporal


Rework the clear_pages patch to do just that? Maybe rename clear_pages
clear_pages_nt?

prep_zero_page would use a temporal clear for an order 0 page but a
nontemporal clear for higher order pages.
-
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: 2005-04-06 13:30    [W:0.144 / U:2.280 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site