From: David Ahern <dsahern@gmail.com>
To: "H. Peter Anvin" <hpa@linux.intel.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>,
Maarten Lankhorst <m.b.lankhorst@gmail.com>,
x86@kernel.org, LKML <linux-kernel@vger.kernel.org>,
Stephane Eranian <eranian@google.com>
Subject: Re: perf, x86: Disable PEBS on SandyBridge chips
Date: Fri, 17 Feb 2012 15:08:07 -0700 [thread overview]
Message-ID: <4F3ECFC7.4010607@gmail.com> (raw)
In-Reply-To: <4F3EC931.2080106@linux.intel.com>
On 2/17/12 2:40 PM, H. Peter Anvin wrote:
> On 02/17/2012 07:12 AM, Peter Zijlstra wrote:
>> On Fri, 2012-02-17 at 13:39 +0100, Maarten Lankhorst wrote:
>>> Hey Peter,
>>>
>>> Why is PEBS disabled? If I look at the intel_clovertown_quirks I can see
>>> why it's disabled for that cpu, but the sandy bridge one lacks any kind
>>> of clarification or information on why, or how I can learn more.
>>
>> hpa, could you get the official Intel answer on this?
>
> *Where* is PEBS disabled?
arch/x86/kernel/cpu/perf_event_intel.c,
intel_sandybridge_quirk()
David
next prev parent reply other threads:[~2012-02-17 22:08 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-02-17 12:39 perf, x86: Disable PEBS on SandyBridge chips Maarten Lankhorst
2012-02-17 15:12 ` Peter Zijlstra
2012-02-17 21:40 ` H. Peter Anvin
2012-02-17 22:08 ` David Ahern [this message]
2012-02-17 22:12 ` H. Peter Anvin
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=4F3ECFC7.4010607@gmail.com \
--to=dsahern@gmail.com \
--cc=a.p.zijlstra@chello.nl \
--cc=eranian@google.com \
--cc=hpa@linux.intel.com \
--cc=linux-kernel@vger.kernel.org \
--cc=m.b.lankhorst@gmail.com \
--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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.