Re: [PATCH] perf tools: Speed up report for perf compiled with linwunwind

From: Arnaldo Carvalho de Melo
Date: Thu May 02 2019 - 09:13:36 EST


Em Fri, Apr 26, 2019 at 09:38:04AM +0200, Jiri Olsa escreveu:
> When compiled with libunwind, perf does some preparatory work
> when processing side-band events. This is not needed when report
> actually don't unwind dwarf callchains, so it's disabled with
> dwarf_callchain_users bool.
>
> However we could move that check to higher level and shield more
> unwanted code for normal report processing, giving us following
> speed up on kernel build profile:

Thanks, applied to perf/core.

- Arnaldo