From: Davidlohr Bueso <davidlohr@hp.com>
To: Nicolas Pitre <nicolas.pitre@linaro.org>
Cc: Steven Rostedt <rostedt@goodmis.org>,
Ingo Molnar <mingo@redhat.com>,
Daniel Lezcano <daniel.lezcano@linaro.org>,
Russell King - ARM Linux <linux@arm.linux.org.uk>,
Catalin Marinas <catalin.marinas@arm.com>,
linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linaro-kernel@lists.linaro.org
Subject: Re: [PATCH 4/4] (RFC) X86: add IPI tracepoints
Date: Sun, 20 Jul 2014 13:25:54 -0700 [thread overview]
Message-ID: <1405887954.11927.5.camel@buesod1.americas.hpqcorp.net> (raw)
In-Reply-To: <1405660735-13408-5-git-send-email-nicolas.pitre@linaro.org>
On Fri, 2014-07-18 at 01:18 -0400, Nicolas Pitre wrote:
> On X86 there are already tracepoints for IRQ vectors through which IPIs
> are handled. However this is highly X86 specific, and the IPI signaling
> is not currently traced.
>
> This is an attempt at adding generic IPI tracepoints to X86.
I welcome this, and fwiw have been trying out this patch. One thing I
would like to see, but due to overhead would probably be better suited
in userspace (trace-cmd, maybe?), is a more packed description of the
IPI. Ie: unifying ipi_init and ipi_exit and show overall cost of the
IPI.
Thanks,
Davidlohr
next prev parent reply other threads:[~2014-07-20 20:26 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-07-18 5:18 [PATCH 0/4] basic IPI tracing Nicolas Pitre
2014-07-18 5:18 ` [PATCH 1/4] tracepoint: add generic tracepoint definitions for " Nicolas Pitre
2014-07-23 13:24 ` Daniel Lezcano
2014-07-18 5:18 ` [PATCH 2/4] ARM: add IPI tracepoints Nicolas Pitre
2014-07-18 20:04 ` Steven Rostedt
2014-07-18 20:55 ` Nicolas Pitre
2014-07-18 21:22 ` Steven Rostedt
2014-07-19 2:55 ` Nicolas Pitre
2014-07-19 3:30 ` Steven Rostedt
2014-07-19 19:10 ` Ard Biesheuvel
2014-07-19 20:28 ` Steven Rostedt
2014-07-19 20:50 ` Ard Biesheuvel
2014-07-19 21:56 ` Steven Rostedt
2014-07-19 21:59 ` Nicolas Pitre
2014-07-23 22:18 ` Nicolas Pitre
2014-07-18 5:18 ` [PATCH 3/4] ARM64: " Nicolas Pitre
2014-07-21 10:36 ` Catalin Marinas
2014-07-18 5:18 ` [PATCH 4/4] (RFC) X86: " Nicolas Pitre
2014-07-18 20:27 ` Steven Rostedt
2014-07-18 20:59 ` Nicolas Pitre
2014-07-21 22:54 ` Steven Rostedt
2014-07-23 22:00 ` Nicolas Pitre
2014-07-20 20:25 ` Davidlohr Bueso [this message]
2014-07-21 22:35 ` Nicolas Pitre
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=1405887954.11927.5.camel@buesod1.americas.hpqcorp.net \
--to=davidlohr@hp.com \
--cc=catalin.marinas@arm.com \
--cc=daniel.lezcano@linaro.org \
--cc=linaro-kernel@lists.linaro.org \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux@arm.linux.org.uk \
--cc=mingo@redhat.com \
--cc=nicolas.pitre@linaro.org \
--cc=rostedt@goodmis.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;
as well as URLs for NNTP newsgroup(s).