linux-kernel - Re: [RFC] The New and Improved Logdev (now with kprobes!)

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Message-ID: <Pine.LNX.4.58.0610051438010.31280@gandalf.stny.rr.com>
Date:	Thu, 5 Oct 2006 14:38:58 -0400 (EDT)
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Daniel Walker <dwalker@...sta.com>
cc:	Mathieu Desnoyers <mathieu.desnoyers@...ymtl.ca>,
	LKML <linux-kernel@...r.kernel.org>, Ingo Molnar <mingo@...e.hu>,
	Thomas Gleixner <tglx@...utronix.de>,
	Karim Yaghmour <karim@...rsys.com>,
	Andrew Morton <akpm@...l.org>,
	Chris Wright <chrisw@...s-sol.org>, fche@...hat.com,
	Tom Zanussi <zanussi@...ibm.com>
Subject: Re: [RFC] The New and Improved Logdev (now with kprobes!)


On Thu, 5 Oct 2006, Daniel Walker wrote:

> On Thu, 2006-10-05 at 14:09 -0400, Steven Rostedt wrote:
>
> >
> > My problem with using a timestamp, is that I ran logdev on too many archs.
> > So I need to have a timestamp that I can get to that is always reliable.
> > How does LTTng get the time for different archs?  Does it have separate
> > code for each arch?
> >
>
> I just got done updating a patchset that exposes the clocksources from
> generic time to take low level time stamps.. But even without that you
> can just call gettimeofday() directly to get a timestamp .
>

unless you're tracing something that his holding the xtime_lock ;-)

-- Steve

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