lkml.org 
[lkml]   [2009]   [Jul]   [28]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRE: [PATCH 0/26] oprofile: Performance counter multiplexing
Date
From
Hi,

The user-space support is currently in AMD CodeAnalyst utility. I am
working on the more generic user-space support (non-AMD specific) and
will send the patches to OProfile for review.

Suravee

-----Original Message-----
From: Andi Kleen [mailto:andi@firstfloor.org]
Sent: Tuesday, July 28, 2009 1:45 PM
To: Richter, Robert
Cc: LKML; oprofile-list
Subject: Re: [PATCH 0/26] oprofile: Performance counter multiplexing
Robert Richter <robert.richter@amd.com> writes:
> If unsure, say N.
>
> +config OPROFILE_EVENT_MULTIPLEX
> + bool "OProfile multiplexing support (EXPERIMENTAL)"
> + default n
> + depends on OPROFILE && X86
> + help
> + The number of hardware counters is limited. The multiplexing
> + feature enables OProfile to gather more events than counters
> + are provided by the hardware. This is realized by switching
> + between events at an user specified time interval.
> +

I would suggest to drop that CONFIG and have the code unconditional.
It's not a lot code and should be always available.

Will do more detailed review later and will look at Intel P6 support.

Where's the userland support for this?

-Andi

--
ak@linux.intel.com -- Speaking for myself only.

------------------------------------------------------------------------
------
Let Crystal Reports handle the reporting - Free Crystal Reports 2008
30-Day
trial. Simplify your report design, integration and deployment - and
focus on
what you do best, core application coding. Discover what's new with
Crystal Reports now. http://p.sf.net/sfu/bobj-july
_______________________________________________
oprofile-list mailing list
oprofile-list@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/oprofile-list



\
 
 \ /
  Last update: 2009-07-29 00:21    [from the cache]
©2003-2011 Jasper Spaans