linux-kernel - Re: [PATCH 11/19] perf, c2c: Add in sort on physid

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Date:	Fri, 28 Feb 2014 10:59:18 -0800
From:	Andi Kleen <andi@...stfloor.org>
To:	Don Zickus <dzickus@...hat.com>
Cc:	acme@...stprotocols.net, LKML <linux-kernel@...r.kernel.org>,
	jolsa@...hat.com, jmario@...hat.com, fowles@...each.com,
	eranian@...gle.com
Subject: Re: [PATCH 11/19] perf, c2c: Add in sort on physid

Don Zickus <dzickus@...hat.com> writes:
> +
> +	/*
> +	 * must pass period=weight in order to get the correct
> +	 * sorting from hists__collapse_resort() which is solely
> +	 * based on periods. We want sorting be done on nr_events * weight
> +	 * and this is indirectly achieved by passing period=weight here
> +	 * and the he_stat__add_period() function.
> +	 */

sort.c really must be fixed to support multiple sort keys properly.
Lots of other code has workarounds for this too (e.g. it is a bit
problem for TSX abort weights)

I would suggest to fix that instead of hacking around it.

-Andi


-- 
ak@...ux.intel.com -- Speaking for myself only
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