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From: Ingo Molnar <mingo@kernel.org>
To: "Frank Ch. Eigler" <fche@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>,
	Mel Gorman <mgorman@suse.de>, LKML <linux-kernel@vger.kernel.org>,
	SystemTap <systemtap@sourceware.org>
Subject: Re: systemtap broken by removal of register_timer_hook
Date: Wed, 10 Apr 2013 13:24:56 +0200	[thread overview]
Message-ID: <20130410112456.GA29886@gmail.com> (raw)
In-Reply-To: <20130403144428.GA15432@redhat.com>


* Frank Ch. Eigler <fche@redhat.com> wrote:

> Hi -
> 
> On Wed, Apr 03, 2013 at 02:49:53PM +0200, Frederic Weisbecker wrote:
> 
> > Sounds good, would you like to propose a version? We are also
> > interested in a timer tick event tracepoint for dynticks debugging.
> 
> How about this?
> 
> Author: Frank Ch. Eigler <fche@redhat.com>
> Date:   Wed Apr 3 10:35:21 2013 -0400
> 
>     profiling: add profile_tick tracepoint
>     
>     Commit ba6fdda4 removed the timer_hook mechanism for modules to listen
>     to profiling timer ticks (without having to set up more complicated
>     perf mechanisms).  To reduce the impact on out-of-tree users, a
>     TRACE_EVENT-flavoured tracepoint is added in its place.  Tested with
>     perf and systemtap.

I'd suggest mentioning SystemTap here as the driving motivation. SystemTap 
triggered a generic kernel improvement here, no need to hide its identity!

Thanks,

	Ingo

      parent reply	other threads:[~2013-04-10 11:25 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-04-03  7:50 systemtap broken by removal of register_timer_hook Mel Gorman
2013-04-03 11:01 ` Frederic Weisbecker
     [not found] ` <CAFTL4hyYezB2ZxM-GJ70VoxOeRSG64V6u+nX2hTuhF30R-GdPg__32168.962484184$1364986928$gmane$org@mail.gmail.com>
2013-04-03 12:29   ` Frank Ch. Eigler
2013-04-03 12:49     ` Frederic Weisbecker
2013-04-03 14:44       ` Frank Ch. Eigler
2013-04-03 18:38         ` Josh Stone
2013-04-04 12:46         ` Frederic Weisbecker
2013-04-19 14:46           ` Frank Ch. Eigler
2013-04-30  0:19             ` Frederic Weisbecker
2013-04-30 17:27               ` Frank Ch. Eigler
2013-05-06 23:12                 ` Frederic Weisbecker
2013-04-10 11:24         ` Ingo Molnar [this message]

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