From: Peter Zijlstra <a.p.zijlstra@chello.nl>
To: Stephane Eranian <eranian@google.com>
Cc: Vince Weaver <vweaver1@eecs.utk.edu>,
mingo@redhat.com, hpa@zytor.com, linux-kernel@vger.kernel.org,
tglx@linutronix.de, mingo@elte.hu
Subject: Re: [tip:perf/urgent] perf/x86: Enable raw event access to Intel offcore events
Date: Mon, 21 Nov 2011 22:42:10 +0100 [thread overview]
Message-ID: <1321911730.28118.35.camel@twins> (raw)
In-Reply-To: <CABPqkBTfNuY8_rcf-u=kf4V-bv_bZwUAhz3J3Z=wan29=09f9A@mail.gmail.com>
On Mon, 2011-11-21 at 22:39 +0100, Stephane Eranian wrote:
> To solve this problem (in the general case), you need to know which
> counter is taken (or required)
> by ALL pinned system-wide events across all CPUs. Once you've
> constructed the bitmap, you can
> use it as the basis (used_mask) to try and schedule the group events.
>
Its worse, you also need to consider all task-pinned events if you want
to be complete. That's an even worse problem.
next prev parent reply other threads:[~2011-11-21 21:42 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-08-03 16:05 [perf] enable raw OFFCORE_EVENTS for non-perf userspace Vince Weaver
2011-08-03 17:00 ` Vince Weaver
2011-08-04 15:55 ` Peter Zijlstra
2011-08-05 2:24 ` Vince Weaver
2011-08-05 9:49 ` Ingo Molnar
2011-11-07 18:30 ` Vince Weaver
2011-11-18 23:34 ` [tip:perf/urgent] perf/x86: Enable raw event access to Intel offcore events tip-bot for Peter Zijlstra
2011-11-21 18:24 ` Vince Weaver
2011-11-21 18:52 ` Peter Zijlstra
2011-11-21 19:01 ` Vince Weaver
2011-11-21 19:04 ` Stephane Eranian
2011-11-21 21:04 ` Vince Weaver
2011-11-21 21:39 ` Stephane Eranian
2011-11-21 21:42 ` Peter Zijlstra [this message]
2011-11-21 21:45 ` Stephane Eranian
2011-11-21 21:48 ` Peter Zijlstra
2011-11-21 22:05 ` Peter Zijlstra
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=1321911730.28118.35.camel@twins \
--to=a.p.zijlstra@chello.nl \
--cc=eranian@google.com \
--cc=hpa@zytor.com \
--cc=linux-kernel@vger.kernel.org \
--cc=mingo@elte.hu \
--cc=mingo@redhat.com \
--cc=tglx@linutronix.de \
--cc=vweaver1@eecs.utk.edu \
/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.