Messages in this thread | | | Subject | Re: [PATCH 2/2] tracing/events: Add kexec tracepoints | From | Steven Rostedt <> | Date | Tue, 08 Sep 2009 21:39:26 -0400 |
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On Tue, 2009-09-08 at 18:27 -0700, Eric W. Biederman wrote: > Li Zefan <lizf@cn.fujitsu.com> writes: > > > When panic, save in ring buffer the time when crash happened, > > the panic message, etc. And the data can be retrieved from > > core dump file using flight-recorder, which is going to be a > > module of the crash utility. > > > > Also if we implement flight-recorder in perf tool, those trace > > outputs can be used by perf tool. > > Please let's keep dynamic code out of crash_kexec if we can.
What dynamic code? It's a tracepoint not something like the function tracer. It is activated via a bit test and a jmp. Not very dynamic.
-- Steve
> > If this is just about timestamsp I don't see the point.
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