[lkml]   [2009]   [Sep]   [26]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [RFC PATCH] perf_core: provide a kernel-internal interface to get to performance counters
On Sun, 27 Sep 2009 00:02:46 +0530
"K.Prasad" <> wrote:

> On Sat, Sep 26, 2009 at 12:03:28PM -0400, Frank Ch. Eigler wrote:

> > For what it's worth, this sort of thing also looks useful from
> > systemtap's point of view.
> Wouldn't SystemTap be another user that desires support for
> multiple/all CPU perf-counters (apart from hw-breakpoints as a
> potential user)? As Arjan pointed out, perf's present design would
> support only a per-CPU or per-task counter; not both.

I'm sorry but I think I am missing your point.
"all cpu counters" would be one small helper wrapper away, a helper I'm
sure the SystemTap people are happy to submit as part of their patch
series when they submit SystemTap to the kernel.

Arjan van de Ven Intel Open Source Technology Centre
For development, discussion and tips for power savings,

 \ /
  Last update: 2009-09-26 20:51    [W:0.068 / U:1.464 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site