lkml.org 
[lkml]   [2000]   [Sep]   [29]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [patch] enabling APIC and NMI watchdog on UP systems
From
Date
Ingo Molnar <mingo@elte.hu> writes:

> that having all said, i'm not against a generic, nonpriviledged (kernel
> based) performance counter API within the kernel (if there is demand), and
> such an API should of course have close control over the contents of the
> performance counter registers, and in this case the NMI oopser has to
> cooperate. Something like doing per-process performance monitoring and
> potentially switching the MSRs on task-switch.


regarding perf. counters, there is also the PAPI initiative, standard
*user level* API :

Performance Data Standard and API
http://icl.cs.utk.edu/projects/papi/


Linux 2.2 and 2.4 (CVS) are actively supported with a patch. Probably
PAPI developers would also be glad to have a standard linux kernel API.

d.
--
David.Mentre@irisa.fr -- http://www.irisa.fr/prive/dmentre/
Linux SMP HOWTO: http://www.irisa.fr/prive/dmentre/smp-howto/
Opinions expressed here are only mine.
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 12:39    [W:0.077 / U:0.624 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site