linux-kernel - Re: [ANNOUNCE][RFC][PATCH] Crash-utility, tracing: enable crash to analyze tracing from core-file (make tracing can act as a flight recorder)

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Message-Id: <1249314136.7924.126.camel@twins>
Date:	Mon, 03 Aug 2009 17:42:16 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Lai Jiangshan <laijs@...fujitsu.com>
Cc:	Dave Anderson <anderson@...hat.com>, crash-utility@...hat.com,
	Ingo Molnar <mingo@...e.hu>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Arnaldo Carvalho de Melo <acme@...stprotocols.net>,
	"Luis Claudio R. Goncalves" <lclaudio@...g.org>,
	Clark Williams <clark.williams@...il.com>,
	Jon Masters <jonathan@...masters.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Mathieu Desnoyers <mathieu.desnoyers@...ymtl.ca>,
	Christoph Hellwig <hch@...radead.org>,
	Xiao Guangrong <xiaoguangrong@...fujitsu.com>,
	Zhaolei <zhaolei@...fujitsu.com>, kosaki.motohiro@...fujitsu.com,
	Li Zefan <lizf@...fujitsu.com>,
	Masami Hiramatsu <mhiramat@...hat.com>,
	"Frank Ch. Eigler" <fche@...hat.com>,
	Tom Zanussi <tzanussi@...il.com>,
	Jason Baron <jbaron@...hat.com>, srostedt@...hat.com,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [ANNOUNCE][RFC][PATCH] Crash-utility, tracing: enable crash to
 analyze tracing from core-file (make tracing can act as a flight recorder)

On Mon, 2009-08-03 at 22:48 +0800, Lai Jiangshan wrote:
> + /* SIGH, we cann't get "print fmt" from core-file */

doesn't crash have a vmlinux around to look at?

> +/*
> + * TODO: implement event_generic_print_fmt_print() when the print fmt
> + * in tracing/events/$SYSTEM/$TRACE/format becomes a will-defined
> + * language.
> + */

(well-defined)

That would require the running kernel to be the same as the one that
generated the core file -- not very usable imho.
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