Re: Add top down metrics to perf stat

[Jiri Olsa]

On Fri, May 13, 2016 at 06:44:49PM -0700, Andi Kleen wrote:
> Note to reviewers: includes both tools and kernel patches.
> The kernel patches are at the beginning.
> 
> [v2: Address review feedback.
> Metrics are now always printed, but colored when crossing threshold.
> --topdown implies --metric-only.
> Various smaller fixes, see individual patches]
> [v3: Add --single-thread option and support it with HT off.
> Clean up old HT workaround.
> Improve documentation.
> Various smaller fixes, see individual patches.]
> [v4: Rebased on latest tree]
> [v5: Rebased on latest tree. Move debug messages to -vv]
> [v6: Rebased. Remove .aggr-per-core and --single-thread to not
> break old perf binaries. Put SMT enumeration into 
> generic topology API.]
> [v7: Address review comments. Change patch title headers.]

other than the missing headers and unnneeded initialization
of have_frontend_stalled I'm ok with the perf tools part

thanks,
jirka