Re: [PATCHSET 00/24] perf tools: Add support to accumulate histperiods (v6)

From: Jiri Olsa
Date: Wed Jan 22 2014 - 08:21:31 EST

On Tue, Jan 14, 2014 at 02:25:33PM +0900, Namhyung Kim wrote:
> Hello,
> This is a new attempt to implement cumulative hist period report.
> This work begins from Arun's SORT_INCLUSIVE patch [1] but I completely
> rewrote it from scratch.
> This patchset is based on my previous patchset [2] but I think it's
> almost independent so that it can be applied separately.
> Please see the patch 03/24. I refactored functions that add hist
> entries with struct hist_entry_iter. While I converted all functions
> carefully, it'd be better anyone can test and confirm that I didn't
> mess up something - especially for branch stack and mem stuff.
> This patchset basically adds period in a sample to every node in the
> callchain. A hist_entry now has an additional fields to keep the
> cumulative period if --children option is given on perf report.
> I changed the option as a separate --children and added a new
> "Children" column (and renamed the default "Overhead" column into
> "Self"). The output will be sorted by children (cumulative) overhead
> for now. The reason I changed to the --children is that I still think
> it's much different from other --call-graph options. The --call-graph
> option will take care of it even with --children option.
> I know that the UI should be changed also to be more flexible as Ingo
> requested, but I'd like to do this first and then move to work on the
> next. I also added a new config option to enable it by default.
> * changes in v6:
> - separate struct hist_iter_ops (Jiri)
> - check iter->he before calling ->add_entry_cb (Jiri)
> - fix locking issue on perf top (Jiri)

I have changes on top of this patchset and all looks great, I was
just going throught this again and wanted to send my ack, but it
no longer merges to the acme's perf/core.

Could you please send updated version, and I'll finish the
review.. I promise ;-)

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