Re: [PATCH] perf list: Hide deprecated events by default

[Jin, Yao]

On 10/15/2019 5:14 PM, Jiri Olsa wrote:
> On Tue, Oct 15, 2019 at 10:53:57AM +0800, Jin Yao wrote:
> > There are some deprecated events listed by perf list. But we can't remove
> > them from perf list with ease because some old scripts may use them.
> >
> > Deprecated events are old names of renamed events.  When an event gets
> > renamed the old name is kept around for some time and marked with
> > Deprecated. The newer Intel event lists in the tree already have these
> > headers.
> >
> > So we need to keep them in the event list, but provide a new option to
> > show them. The new option is "--deprecated".
> >
> > With this patch, the deprecated events are hidden by default but they can
> > be displayed when option "--deprecated" is enabled.
>
> not sure it's wise to hide them, because people will not read man page
> to find --deprecated option, they will rather complain right away ;-)
>
> how about to display them as another topic, like:
>
> pipeline:
> 	...
> uncore:
> 	...
> deprecated:
> 	...
>
> jirka

Hi Jiri,

I don't know if we add a new topic "deprecated" in perf list output, 
does the old script need to be modified as well?

Say the events are moved to the "deprecated" section, I just guess the 
script needs the modification.

That's just my personal guess. :)

Thanks
Jin Yao