From: Andi Kleen <andi@firstfloor.org>
To: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>, Jack Steiner <steiner@sgi.com>,
Jan Beulich <JBeulich@novell.com>, Borislav Petkov <bp@amd64.org>,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
Nick Piggin <npiggin@kernel.dk>,
"x86\@kernel.org" <x86@kernel.org>,
Thomas Gleixner <tglx@linutronix.de>,
Andrew Morton <akpm@linux-foundation.org>,
Linus Torvalds <torvalds@linux-foundation.org>,
Ingo Molnar <mingo@redhat.com>,
tee@sgi.com, Nikanth Karthikesan <knikanth@suse.de>,
"linux-kernel\@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"H. Peter Anvin" <hpa@zytor.com>
Subject: Re: [PATCH RFC] x86: avoid atomic operation in test_and_set_bit_lock if possible
Date: Thu, 24 Mar 2011 14:42:07 -0700 [thread overview]
Message-ID: <m2oc50kxg0.fsf@firstfloor.org> (raw)
In-Reply-To: <1301000557.2714.33.camel@edumazet-laptop> (Eric Dumazet's message of "Thu, 24 Mar 2011 22:02:37 +0100")
Eric Dumazet <eric.dumazet@gmail.com> writes:
>
> [ 0.015998] Performance Events: PEBS fmt0+, Core2 events, Broken BIOS detected, using software events only.
> [ 0.015998] [Firmware Bug]: the BIOS has corrupted hw-PMU resources (MSR 186 is 43003c)
There should be a BIOS setting to disable that (something with p-states
likely).
> I am pretty sure I used "-e ..." some time ago with same BIOS.
The "if anyone else uses the PMU throw in your toys and sulk" check was
only recently added.
Or fix perf just ignore counters that are already used. The others
should work fine.
-Andi
--
ak@linux.intel.com -- Speaking for myself only
next prev parent reply other threads:[~2011-03-24 21:43 UTC|newest]
Thread overview: 49+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-03-24 4:56 [PATCH RFC] x86: avoid atomic operation in test_and_set_bit_lock if possible Nikanth Karthikesan
2011-03-24 8:52 ` Jan Beulich
2011-03-24 8:56 ` Ingo Molnar
2011-03-24 14:52 ` Borislav Petkov
2011-03-24 16:48 ` Jan Beulich
2011-03-24 17:19 ` Ingo Molnar
2011-03-25 10:06 ` Jan Beulich
2011-03-25 11:10 ` Ingo Molnar
2011-03-25 12:04 ` Nikanth Karthikesan
2011-03-25 13:12 ` Jack Steiner
2011-03-25 16:29 ` Linus Torvalds
2011-03-25 16:47 ` Jan Beulich
2011-03-25 16:49 ` Jack Steiner
2011-03-24 17:30 ` Jack Steiner
2011-03-24 20:00 ` Ingo Molnar
2011-03-24 20:40 ` Andi Kleen
2011-03-24 20:50 ` Ingo Molnar
2011-03-24 21:37 ` Andi Kleen
2011-03-24 20:48 ` Eric Dumazet
2011-03-24 20:54 ` Ingo Molnar
2011-03-24 21:02 ` Eric Dumazet
2011-03-24 21:42 ` Andi Kleen [this message]
2011-03-24 23:26 ` Linus Torvalds
2011-03-24 23:56 ` Andi Kleen
2011-03-25 5:47 ` Eric Dumazet
2011-03-25 9:32 ` Ingo Molnar
2011-03-25 9:44 ` Eric Dumazet
2011-03-25 9:59 ` Ingo Molnar
2011-03-25 10:50 ` Borislav Petkov
2011-03-25 11:10 ` Peter Zijlstra
2011-03-25 11:11 ` Ingo Molnar
2011-03-25 16:16 ` Robert Richter
2011-03-25 17:22 ` Andi Kleen
2011-03-25 19:26 ` Ingo Molnar
2011-03-25 9:38 ` Eric Dumazet
2011-03-25 20:29 ` Peter Zijlstra
2011-03-26 8:15 ` Eric Dumazet
2011-03-26 9:44 ` Peter Zijlstra
2011-03-26 9:57 ` Ingo Molnar
2011-03-25 9:22 ` Ingo Molnar
2011-03-25 10:21 ` Peter Zijlstra
2011-03-25 16:08 ` Robert Richter
2011-03-25 19:31 ` Ingo Molnar
2011-03-25 17:15 ` Andi Kleen
2011-03-25 19:21 ` Ingo Molnar
2011-03-25 9:35 ` Ingo Molnar
2011-03-24 17:01 ` Linus Torvalds
2011-03-24 17:13 ` Jack Steiner
2011-03-24 18:38 ` Andi Kleen
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=m2oc50kxg0.fsf@firstfloor.org \
--to=andi@firstfloor.org \
--cc=JBeulich@novell.com \
--cc=a.p.zijlstra@chello.nl \
--cc=akpm@linux-foundation.org \
--cc=bp@amd64.org \
--cc=eric.dumazet@gmail.com \
--cc=hpa@zytor.com \
--cc=knikanth@suse.de \
--cc=linux-kernel@vger.kernel.org \
--cc=mingo@elte.hu \
--cc=mingo@redhat.com \
--cc=npiggin@kernel.dk \
--cc=steiner@sgi.com \
--cc=tee@sgi.com \
--cc=tglx@linutronix.de \
--cc=torvalds@linux-foundation.org \
--cc=x86@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox