LKML Archive on lore.kernel.org
help / color / mirror / Atom feed
From: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: "Frank Ch. Eigler" <fche@redhat.com>,
	linux-kernel@vger.kernel.org,
	Christoph Hellwig <hch@infradead.org>,
	Ingo Molnar <mingo@redhat.com>,
	systemtap@sources.redhat.com, ltt-dev@shafik.org
Subject: Re: [PATCH 00/05] Linux Kernel Markers - kernel 2.6.20
Date: Thu, 15 Feb 2007 17:30:37 -0500	[thread overview]
Message-ID: <20070215223037.GA6297@Krystal> (raw)
In-Reply-To: <20070215141841.6eed5fbb.akpm@linux-foundation.org>

* Andrew Morton (akpm@linux-foundation.org) wrote:
> On 15 Feb 2007 10:28:57 -0500
> fche@redhat.com (Frank Ch. Eigler) wrote:
> 
> > 
> > akpm wrote:
> > 
> > > [...]  And what can I do with these markers?  And once I've done it,
> > > are there any userspace applications I can use to get the data out
> > > in human-usable form?  [...]
> > 
> > The LTTng user-space programs use it today.  Systemtap used to support
> > the earlier marker prototype and will be rapidly ported over to this
> > new API upon acceptance.
> > 
> 
> That's good.
> 
> It would be beneficial if some people from those projects could spare the
> cycles to carefully review and runtime test this code.
> 
LTTng is using the marker infrastructure since last november. Me and my
users have been very happy with it.

> Also, I'm not 100% clear on where we ended up with the huge
> static-vs-dynamic flamewar.  Did everyone end up happy?  Is this patchset a
> reasonable compromise?  Or do we need a rematch?

I think the final agreement was the need for some kind of code marking
system, which I tried to implement as best as I could. It gives very
good performances while tracing (advantage of static tracing), has a
very very minimal performance and binary size impact when disabled
(advantage of dynamic tracing) and it can be activated dynamically
(advantage of dynamic tracing).

Mathieu

-- 
Mathieu Desnoyers
Computer Engineering Ph.D. Candidate, École Polytechnique de Montréal
OpenPGP key fingerprint: 8CD5 52C3 8E3C 4140 715F  BA06 3F25 A8FE 3BAE 9A68

  reply	other threads:[~2007-02-15 22:30 UTC|newest]

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-02-11 20:03 Mathieu Desnoyers
2007-02-11 20:03 ` [PATCH 01/05] Linux Kernel Markers : Kconfig menus Mathieu Desnoyers
2007-02-11 20:03 ` [PATCH 02/05] Linux Kernel Markers, architecture independant code Mathieu Desnoyers
2007-02-15  7:21   ` Andrew Morton
2007-02-15 19:12     ` Mathieu Desnoyers
2007-02-11 20:03 ` [PATCH 03/05] Linux Kernel Markers : powerpc optimization Mathieu Desnoyers
2007-02-11 20:03 ` [PATCH 04/05] Linux Kernel Markers : i386 optimization Mathieu Desnoyers
2007-02-11 20:03 ` [PATCH 05/05] Linux Kernel Markers, non optimized architectures Mathieu Desnoyers
2007-02-15  7:16   ` Andrew Morton
2007-02-15 19:09     ` Mathieu Desnoyers
2007-02-16 20:26       ` Karim Yaghmour
2007-02-16 23:38         ` Mathieu Desnoyers
2007-02-21 20:09           ` Karim Yaghmour
2007-02-21 20:45             ` Mathieu Desnoyers
2007-02-21 22:06               ` Karim Yaghmour
2007-02-22  0:18                 ` [PATCH] Linux Kernel Markers - cleanup Mathieu Desnoyers
2007-02-15  7:12 ` [PATCH 00/05] Linux Kernel Markers - kernel 2.6.20 Andrew Morton
2007-02-15 15:28   ` Frank Ch. Eigler
2007-02-15 22:18     ` Andrew Morton
2007-02-15 22:30       ` Mathieu Desnoyers [this message]
2007-02-15 23:14       ` Vara Prasad
2007-02-16  1:32   ` Mathieu Desnoyers
2007-02-16  1:33   ` [PATCH] Linux Kernel Markers Documentation Mathieu Desnoyers
2007-02-16  1:45     ` Randy Dunlap
2007-02-16  3:56       ` Mathieu Desnoyers
2007-02-16  4:05       ` [PATCH] Linux Kernel Markers Documentation - fix Mathieu Desnoyers

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=20070215223037.GA6297@Krystal \
    --to=mathieu.desnoyers@polymtl.ca \
    --cc=akpm@linux-foundation.org \
    --cc=fche@redhat.com \
    --cc=hch@infradead.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=ltt-dev@shafik.org \
    --cc=mingo@redhat.com \
    --cc=systemtap@sources.redhat.com \
    --subject='Re: [PATCH 00/05] Linux Kernel Markers - kernel 2.6.20' \
    /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

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).