lkml.org 
[lkml]   [2006]   [Aug]   [8]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
SubjectRe: [PATCH] x86_64: Auto size the per cpu area.
Date
Andi Kleen <ak@suse.de> writes:

> On Tuesday 08 August 2006 07:47, Eric W. Biederman wrote:
>>
>> Now for a completely different but trivial approach.
>> I just boot tested it with 255 CPUS and everything worked.
>>
>> Currently everything (except module data) we place in
>> the per cpu area we know about at compile time. So
>> instead of allocating a fixed size for the per_cpu area
>> allocate the number of bytes we need plus a fixed constant
>> for to be used for modules.
>>
>> It isn't perfect but it is much less of a pain to
>> work with than what we are doing now.
>
> Yes makes sense.
>
> However not that particular patch - i already changed that
> code in my tree because I needed really early per cpu for something and
> i had switched to using a static array for cpu0's cpudata.
>
> I will modify it to work like your proposal.

Sounds good to me.


Eric
-
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: 2006-08-08 08:49    [W:0.148 / U:3.424 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site