From: Ingo Molnar <mingo@elte.hu>
To: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Cyrill Gorcunov <gorcunov@gmail.com>,
Don Zickus <dzickus@redhat.com>,
Stephane Eranian <eranian@google.com>,
Lin Ming <ming.m.lin@intel.com>,
Arnaldo Carvalho de Melo <acme@redhat.com>,
Frederic Weisbecker <fweisbec@gmail.com>,
LKML <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH -tip, final] perf, x86: Add hw_watchdog_set_attr() in a sake of nmi-watchdog on P4
Date: Tue, 5 Jul 2011 16:56:56 +0200 [thread overview]
Message-ID: <20110705145656.GA18116@elte.hu> (raw)
In-Reply-To: <1309876851.3282.235.camel@twins>
* Peter Zijlstra <a.p.zijlstra@chello.nl> wrote:
> On Tue, 2011-07-05 at 15:31 +0200, Ingo Molnar wrote:
> > So there's lots of options to fix/improve this more intelligently.
>
> Sure, and I like the alternative encoding thing best, but doing
> that will take time, in the meantime this patch, which is
> relatively small (and easy to revert once we get something better
> going) does fix a problem for those few unfortunate souls still
> using P4 hardware.
Well, the BUS_CYCLES thing looks similarly straightforward and should
result in an even simpler patch.
On P4 BUS_CYCLES would be able to co-exist with CPU_CYCLES so it will
solve the P4 issue naturally as well.
Thanks,
Ingo
next prev parent reply other threads:[~2011-07-05 14:57 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-07-05 10:03 [PATCH -tip, final] perf, x86: Add hw_watchdog_set_attr() in a sake of nmi-watchdog on P4 Cyrill Gorcunov
2011-07-05 10:20 ` Ingo Molnar
2011-07-05 10:34 ` Cyrill Gorcunov
2011-07-05 10:59 ` Ingo Molnar
2011-07-05 11:05 ` Cyrill Gorcunov
2011-07-05 11:20 ` Ingo Molnar
2011-07-05 11:36 ` Cyrill Gorcunov
2011-07-05 11:44 ` Ingo Molnar
2011-07-05 11:49 ` Cyrill Gorcunov
2011-07-05 12:14 ` Cyrill Gorcunov
2011-07-05 13:10 ` Ingo Molnar
2011-07-05 13:17 ` Peter Zijlstra
2011-07-05 13:31 ` Ingo Molnar
2011-07-05 14:19 ` Cyrill Gorcunov
2011-07-08 12:44 ` Ingo Molnar
2011-07-05 14:20 ` Peter Zijlstra
2011-07-05 14:40 ` Peter Zijlstra
2011-07-05 14:56 ` Ingo Molnar [this message]
2011-07-05 15:25 ` Cyrill Gorcunov
2011-07-06 7:01 ` Cyrill Gorcunov
2011-07-08 12:49 ` Ingo Molnar
2011-07-08 13:01 ` Cyrill Gorcunov
2011-07-08 13:09 ` Ingo Molnar
2011-07-08 13:12 ` Cyrill Gorcunov
2011-07-05 13:26 ` Cyrill Gorcunov
2011-07-05 12:24 ` Don Zickus
2011-07-05 12:26 ` Cyrill Gorcunov
2011-07-05 12:44 ` Don Zickus
2011-07-05 12:56 ` Cyrill Gorcunov
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