From: Andi Kleen <ak@suse.de>
To: Andrew Morton <akpm@osdl.org>
Cc: discuss@x86-64.org, William Cohen <wcohen@redhat.com>,
Eric Dumazet <dada1@cosmosbay.com>,
Komuro <komurojun-mbn@nifty.com>, Ernst Herzberg <earny@net4u.de>,
Andre Noll <maan@systemlinux.org>,
oprofile-list@lists.sourceforge.net,
Jens Axboe <jens.axboe@oracle.com>,
linux-usb-devel@lists.sourceforge.net, phil.el@wanadoo.fr,
Adrian Bunk <bunk@stusta.de>, Ingo Molnar <mingo@redhat.com>,
Alan Stern <stern@rowland.harvard.edu>,
linux-pci@atrey.karlin.mff.cuni.cz,
Stephen Hemminger <shemminger@osdl.org>,
Prakash Punnoor <prakash@punnoor.de>,
Len Brown <len.brown@intel.com>,
Alex Romosan <romosan@sycorax.lbl.gov>,
Linus Torvalds <torvalds@osdl.org>,
gregkh@suse.de,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
"Eric W. Biederman" <ebiederm@xmission.com>,
Andrey Borzenkov <arvidjaar@mail.ru>
Subject: Re: [discuss] Re: 2.6.19-rc5: known regressions (v3)
Date: Wed, 15 Nov 2006 19:45:30 +0100 [thread overview]
Message-ID: <200611151945.31535.ak@suse.de> (raw)
In-Reply-To: <20061115103915.46a70283.akpm@osdl.org>
On Wednesday 15 November 2006 19:39, Andrew Morton wrote:
> On Wed, 15 Nov 2006 17:48:05 +0100
> Andi Kleen <ak@suse.de> wrote:
>
> >
> > > OProfile has a simplistic view of the performance monitoring hardware. The
> > > routines in libop/op_alloc_counter.c determine what set of performance registers
> > > is available from the processor in use. There is no check to see what registers
> > > are actually available in the /dev/oprofile directory.
> > >
> > > opcontrol executes ophelp to determine which specific counters to count which
> > > events. The function map_event_to_counter() in libop/op_alloc_counter.c does the
> > > actual selection. It seems what is needed is for map_event_to_counter() to check
> > > to see which counters are available and mark the others as unavailable
> >
> > Thanks for the explanation. Can you please fix it and release a new version?
> > Documentation/Changes could be adapted then.
> >
>
> Meanwhile we should restore the NMI counter to fix this bug.
No, it was always oprofile who was buggy here, silently taking
the nmi watchdog away.
-Andi
next prev parent reply other threads:[~2006-11-15 18:45 UTC|newest]
Thread overview: 99+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-11-08 2:33 Linux 2.6.19-rc5 Linus Torvalds
2006-11-08 8:52 ` 2.6.19-rc5: known regressions Adrian Bunk
2006-11-08 9:29 ` [discuss] " Jan Beulich
2006-11-08 10:21 ` Adrian Bunk
2006-11-08 9:34 ` Jens Axboe
2006-11-08 19:09 ` Alex Romosan
2006-11-08 19:29 ` Jens Axboe
2006-11-08 19:38 ` Alex Romosan
2006-11-08 19:45 ` Jens Axboe
2006-11-08 21:40 ` Alex Romosan
2006-11-08 20:03 ` Arjan van de Ven
2006-11-08 20:19 ` Jens Axboe
2006-11-08 11:04 ` Eric W. Biederman
2006-11-08 11:18 ` Eric W. Biederman
2006-11-08 15:47 ` Linus Torvalds
2006-11-08 16:22 ` Adrian Bunk
2006-11-08 23:11 ` Tim Chen
2006-11-09 2:49 ` Tim Chen
2006-11-09 5:10 ` Eric W. Biederman
2006-11-13 22:46 ` Tim Chen
2006-11-14 0:03 ` Eric W. Biederman
2006-11-08 11:32 ` Thomas Gleixner
[not found] ` <7813413.118221162987983254.komurojun-mbn@nifty.com>
2006-11-08 16:00 ` Linus Torvalds
2006-11-10 12:42 ` Re: Re: 2.6.19-rc5: known regressions :SMP kernel can not generate ISA irq Komuro
2006-11-13 16:02 ` Linus Torvalds
2006-11-13 17:11 ` Eric W. Biederman
2006-11-13 20:44 ` Ingo Molnar
2006-11-13 21:11 ` Eric W. Biederman
2006-11-14 8:14 ` [patch] irq: do not mask interrupts by default Ingo Molnar
2006-11-14 8:20 ` Arjan van de Ven
2006-11-14 12:43 ` Komuro
2006-11-14 16:10 ` Linus Torvalds
2006-11-14 17:52 ` [PATCH] Use delayed disable mode of ioapic edge triggered interrupts Eric W. Biederman
2006-11-14 23:35 ` Linus Torvalds
2006-11-15 1:17 ` Linus Torvalds
2006-11-15 5:14 ` Eric W. Biederman
2006-11-15 16:06 ` Linus Torvalds
2006-11-15 16:58 ` Eric W. Biederman
2006-11-15 12:40 ` Komuro
[not found] ` <20061115090427.GA16173@elte.hu>
2006-11-15 16:13 ` [patch] genirq: do not mask interrupts by default Linus Torvalds
2006-11-15 17:46 ` Ingo Molnar
2006-11-09 8:04 ` 2.6.19-rc5: known regressions Martin Lorenz
2006-11-09 13:55 ` Martin Lorenz
2006-11-10 7:53 ` Martin Lorenz
2006-11-08 9:43 ` Linux 2.6.19-rc5 Nigel Cunningham
2006-11-08 9:59 ` Alessandro Suardi
2006-11-08 10:04 ` Nigel Cunningham
2006-11-08 14:19 ` Gene Heskett
2006-11-08 15:43 ` Linus Torvalds
2006-11-11 1:50 ` 2.6.19-rc5: known regressions (v2) Adrian Bunk
2006-11-11 9:08 ` [discuss] " Rafael J. Wysocki
2006-11-11 9:25 ` Paolo Ornati
2006-11-11 10:49 ` Rafael J. Wysocki
2006-11-11 12:29 ` Paolo Ornati
2006-11-14 16:44 ` Paolo Ornati
2006-11-29 10:10 ` [SOLVED] " Paolo Ornati
2006-11-13 22:14 ` 2.6.19-rc5: known regressions with patches Adrian Bunk
2006-11-13 22:56 ` Brian King
2006-11-13 23:15 ` Linus Torvalds
2006-11-14 2:35 ` Jeff Garzik
2006-11-15 10:21 ` 2.6.19-rc5: known regressions (v3) Adrian Bunk
2006-11-15 10:35 ` Jens Axboe
2006-11-15 10:53 ` Adrian Bunk
2006-11-15 10:35 ` Eric Dumazet
2006-11-15 10:50 ` Andi Kleen
2006-11-15 16:40 ` William Cohen
2006-11-15 16:48 ` [discuss] " Andi Kleen
2006-11-15 18:39 ` Andrew Morton
2006-11-15 18:45 ` Andi Kleen [this message]
2006-11-15 19:07 ` Linus Torvalds
2006-11-15 19:23 ` Andi Kleen
2006-11-15 20:21 ` Andrew Morton
2006-11-15 21:18 ` Eric W. Biederman
2006-11-15 21:31 ` Andrew Morton
2006-11-16 10:55 ` Mikael Pettersson
2006-11-16 20:23 ` Andrew Morton
2006-11-17 9:59 ` Mikael Pettersson
2006-11-17 10:13 ` Andrew Morton
2006-11-19 3:05 ` Bill Davidsen
2006-11-17 10:29 ` Andi Kleen
2006-11-16 3:21 ` Andi Kleen
2006-11-16 5:05 ` Andrew Morton
2006-11-16 7:04 ` Andi Kleen
2006-11-16 15:34 ` William Cohen
2006-11-16 15:47 ` Andi Kleen
2006-11-16 21:32 ` Stephane Eranian
2006-11-22 10:28 ` Eric Dumazet
2006-11-22 10:36 ` Andi Kleen
2006-11-22 18:42 ` Andrew Morton
2006-12-16 11:20 ` Ray Lee
2006-11-22 17:59 ` William Cohen
2006-11-22 18:05 ` William Cohen
2006-11-22 18:26 ` Eric Dumazet
2006-11-15 11:06 ` Brice Goglin
2006-11-15 22:32 ` Adrian Bunk
2006-11-15 12:07 ` Alan
2006-11-15 15:52 ` Stephen Hemminger
2006-11-15 16:35 ` Eric W. Biederman
-- strict thread matches above, loose matches on Subject: below --
2006-11-17 18:05 [discuss] " Mikael Pettersson
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