lkml.org 
[lkml]   [2007]   [Jul]   [5]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
SubjectRe: [patch 10/10] Scheduler profiling - Use immediate values
Date
Andi Kleen <andi@firstfloor.org> wrote:
> Alexey Dobriyan <adobriyan@gmail.com> writes:
>> On Tue, Jul 03, 2007 at 12:40:56PM -0400, Mathieu Desnoyers wrote:

>> > Use immediate values with lower d-cache hit in optimized version as a
>> > condition for scheduler profiling call.
>>
>> I think it's better to put profile.c under CONFIG_PROFILING as
>> _expected_, so CONFIG_PROFILING=n users won't get any overhead, immediate or
>> not. That's what I'm going to do after test-booting bunch of kernels.
>
> No, it's better to handle this efficiently at runtime e.g. for
> distribution kernels. Mathieu's patch is good

IMO you should combine them. For distibutions, it may be good to include
profiling support unconditionally, but how many of the vanilla kernel users
are going to use profiling at all?
--
A man inserted an advertisement in the classified: Wife Wanted."
The next day he received a hundred letters. They all said the
same thing: "You can have mine."
Friß, Spammer: oztx1@nAQd3C.7eggert.dyndns.org wGhu@InUYZ.7eggert.dyndns.org
-
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: 2007-07-05 17:27    [W:0.081 / U:0.668 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site