Re: [PATCH 13/23] perf hists: Support filtering in hierarchy mode

[Jiri Olsa]

On Fri, Feb 05, 2016 at 10:01:45PM +0900, Namhyung Kim wrote:

SNIP

> +			/* force to go to sibling in the hierarchy */
> +			saved_unfolded = h->unfolded;
> +			h->unfolded = false;
> +
> +			nd = rb_hierarchy_next(&h->rb_node);
> +			h->unfolded = saved_unfolded;
> +		}
> +	}
> +
> +	/* resort output (top-level entries only) */
> +	nd = rb_first(&hists->entries);
> +	while (nd) {
> +		struct hist_entry *h = rb_entry(nd, struct hist_entry, rb_node);
> +
> +		nd = rb_next(nd);
> +		rb_erase(&h->rb_node, &hists->entries);
> +
> +		__hists__insert_output_entry(&tmp, h, 0, false);
> +	}

what's the purpose of this resort? the only affect I see
is to recalculate callchains

thanks,
jirka