Re: [PATCH v2 10/13] perf header: add a buffer to struct feat_fd

[Jiri Olsa]

On Tue, May 23, 2017 at 12:48:50AM -0700, David Carrillo-Cisneros wrote:
> Extend struct feat_fd to use a temporal buffer in pipe-mode, rather
> than a perf.data file.
> 
> Revamp write_pmu_mappings to avoid seeking so that is compatible with
> pipe-mode.
> 
> Print an error when trying to use buf in features that do not support
> pipe-mode.

could you please just list those features in changelog
plus the reason they don't support this

thanks,
jirka