Re: [PATCH] perf tools: Fixup for removing -f option in perf record

[David Ahern]

On 6/28/13 9:37 AM, Ingo Molnar wrote:
> * David Ahern <dsahern@xxxxxxxxx> wrote:
>
> > On 6/28/13 3:47 AM, Jiri Olsa wrote:
> > > > > I thought -f was the implied default for ages?
> > > >
> > > > OK.. I've been dutifully typing it all this while :-)
> > >
> > > The '-f' option in record command had no affect.. myabe it got
> > > depreceated when we started to backup perf.data to perf.data.old..?
> >
> > Way back in 2010, 2.6.34 kernel - 7865e817 commit. I've been typing
> > the -f for while too. Now about the need for the pesky -f on the
> > analysis side....
>
> That's only needed when perf.data is owned by a different user, right?

Yes, why not let file permissions dictate of uid x can read uid y files? 
Why does perf need to have that restriction? For example, QA collects 
the data files, developers analyze them.

David

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