Re: [PATCH] perf session: Fix infinite loop on invalid perf.data file

From: Ingo Molnar
Date: Tue Oct 01 2013 - 14:06:24 EST



* Arnaldo Carvalho de Melo <acme@xxxxxxxxxxxxxxxxxx> wrote:

> Em Tue, Oct 01, 2013 at 05:33:09PM +0200, Ingo Molnar escreveu:
> >
> > * David Ahern <dsahern@xxxxxxxxx> wrote:
> >
> > > On 10/1/13 8:21 AM, Ingo Molnar wrote:
> > > >But if I understood it correctly this particular message could trigger for
> > > >regular users of perf as well, of the perf record is terminated in some
> > > >unusual fashion. Regular users might not have the perf code handy (and
> > > >might not know about git grep either).
> > >
> > > This is the case I was referring to -- normal users don't care about
> > > the code reference, hence the more specific question about how the
> > > perf-record session ended.
> >
> > Hm, what do you call 'code reference'?
> >
> > The message I suggested is:
> >
> > WARNING: perf/header: Data size is 0. Was the 'perf record' command properly terminated?
> >
> > I didn't intend 'perf/header' to be a code reference - it wanted to refer
> > to the perf.data header. Maybe that should be formulated in a less
> > confusing manner? Something like:
>
> I liked this last one:
>
> > WARNING: The perf.data file's data size field is 0 which is unexpected.
> > Was the 'perf record' command properly terminated?
>
> Can I patch that up into Namhyung's latest patch?

Sure, feel free!

Thanks,

Ingo
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