From: Ingo Molnar <mingo@elte.hu>
To: Joe Korty <joe.korty@ccur.com>
Cc: Mark Brown <broonie@sirena.org.uk>,
Linux Kernel <linux-kernel@vger.kernel.org>,
Simon Farnsworth <simon.farnsworth@onelan.com>,
Arjan van de Ven <arjan@infradead.org>
Subject: Re: [PATCH] printk timestamp post-boot suppression, v2
Date: Thu, 28 Aug 2008 11:40:32 +0200 [thread overview]
Message-ID: <20080828094032.GC28783@elte.hu> (raw)
In-Reply-To: <20080827170424.GA17217@tsunami.ccur.com>
* Joe Korty <joe.korty@ccur.com> wrote:
> On Wed, Aug 27, 2008 at 12:16:30PM -0400, Mark Brown wrote:
> > It'd be nicer if this were optional - syslog typically only logs at
> > second resolution and not all systems are going to have logfiles.
>
> Optionally suppress printk timestamping after system boot.
i think the best approach is to write an initcall tracer - i think Arjan
has some ideas in that area.
that would be infinitely higher quality than anything printk based
anyway, as with ftrace you could see the reasons of why a boot delay
happens - which tasks context-switch, in which code path, etc.
Ingo
prev parent reply other threads:[~2008-08-28 9:41 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-08-27 15:16 [PATCH] printk timestamp post-boot suppression Joe Korty
2008-08-27 15:26 ` Simon Farnsworth
2008-08-27 16:16 ` Mark Brown
2008-08-27 17:04 ` [PATCH] printk timestamp post-boot suppression, v2 Joe Korty
2008-08-27 17:13 ` Simon Farnsworth
2008-08-27 17:22 ` Joe Korty
2008-08-27 17:27 ` Joe Korty
2008-08-27 17:22 ` Andi Kleen
2008-08-28 9:40 ` Ingo Molnar [this message]
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