Re: [ANNOUNCE] New utility: 'trace'

[Ingo Molnar]

* Peter Zijlstra <peterz@xxxxxxxxxxxxx> wrote:

> On Tue, 2010-11-16 at 22:59 +0100, Ingo Molnar wrote:
> > 
> > 
> > Would you be interested in helping out with (and testing) such a more generic 
> > approach?
> 
> how about having perf-record open a named pipe and rewriting everything that comes 
> in through that as an event and storing it in the buffer?

Yeah, that would work too in most cases - except if there's no VFS connection 
between tracer and tracee. (as it might be in the case of say chroot environments, 
etc.)

I think it's better to have kernel solutions that dont modify the VFS beyond the 
trace.data session info. A task could thus generate a user-space event without 
having to negotiate with the tracer.

Thanks,

	Ingo
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