----- Forwarded Message ----- From: "Peter Zijlstra" <peterz(a)infradead.org&gt; To: "Lai Jiangshan" <laijs(a)cn.fujitsu.com&gt; Cc: "Dave Anderson" <anderson(a)redhat.com&gt;, "Ingo Molnar" <mingo(a)elte.hu&gt;, "Frederic Weisbecker" <fweisbec(a)gmail.com&gt;, "Thomas Gleixner" <tglx(a)linutronix.de&gt;, "Arnaldo Carvalho de Melo" <acme(a)ghostprotocols.net&gt;, "Luis Claudio R. Goncalves" <lclaudio(a)uudg.org&gt;, "Clark Williams" <clark.williams(a)gmail.com&gt;, "Jon Masters" <jonathan(a)jonmasters.org&gt;, "Andrew Morton" <akpm(a)linux-foundation.org&gt;, "Mathieu Desnoyers" <mathieu.desnoyers(a)polymtl.ca&gt;, "Christoph Hellwig" <hch(a)infradead.org&gt;, "Xiao Guangrong" <xiaoguangrong(a)cn.fujitsu.com&gt;, "Zhaolei" <zhaolei(a)cn.fujitsu.com&gt;, "kosaki motohiro" <kosaki.motohiro(a)jp.fujitsu.com&gt;, "Li Zefan" <lizf(a)cn.fujitsu.com&gt;, "Masami Hiramatsu" <mhiramat(a)redhat.com&gt;, "Frank Ch. Eigler" <fche(a)redhat.com&gt;, "Tom Zanussi" <tzanussi(a)gmail.com&gt;, "Jason Baron" <jbaron(a)redhat.com&gt;, srostedt(a)redhat.com, "LKML" <linux-kernel(a)vger.kernel.org&gt; Sent: Tuesday, August 4, 2009 6:36:52 AM GMT -05:00 US/Canada Eastern 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 Tue, 2009-08-04 at 14:52 +0800, Lai Jiangshan wrote: Aah, right, I thought the fmt string was easily obtainable from the _ftrace_events section, but now I see it is not, the patch you mention below does indeed make it so. Well, I see no harm in changing the kernel a little when it makes no difference to the kernel but makes post-mortem analysis a little bit easier.