Re: Fix "perf tools: Synthesize GROUP_DESC feature in pipe mode" in the LT 4.14 branch

[Sasha Levin]

On Fri, Dec 21, 2018 at 11:57:53AM +0100, Jinpu Wang wrote:
> +cc Greg, stable
>
> Greensky, James J <james.j.greensky@xxxxxxxxx> ä2018å12æ21æåä äå11:48åéï
> > Commit d38d272592737ea88a20 ("perf tools: Synthesize GROUP_DESC feature in pipe mode") broke the LT 4.14 branch when using event groups in pipe-mode.
> >
> >   # perf record -e '{cycles,instructions,branches}' -- sleep 4 | perf report
> >   # To display the perf.data header info, please use --header/--header-only options
> >   #
> >   Oxd7c [0x60]: failed to process type: 80
> >   Error:
> >   Failed to process sample
> >
> > Commit a2015516c5c0be932a69 ("perf record: Synthesize features before events in pipe mode") is the fix. Can we get this cherry-picked and applied?

I've queued d38d272592737ea88a20 for 4.14, thank you.

--
Thanks,
Sasha