Re: [PATCH v2 07/10] perf stat: Allocate shadow stats buffer for threads

[Jiri Olsa]

On Mon, Nov 27, 2017 at 10:07:27PM +0800, Jin Yao wrote:
> After perf_evlist__create_maps() being executed, we can get all
> threads from /proc. And via thread_map__nr(), we can also get
> the number of threads.
> 
> With the number of threads, the patch allocates a buffer which
> will record the shadow stats for these threads.
> 
> The buffer pointer is saved in stat_config.

why don't you add struct perf_stat_config::*stats|stats_num in this patch?
I dont see any reason it's introduced earlier

jirka