linux-kernel - Re: [PATCH 03/11] perf, tools: Add support for parsing uncore json files

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Date:   Sun, 8 Jan 2017 20:00:55 +0100
From:   Jiri Olsa <jolsa@...hat.com>
To:     Andi Kleen <andi@...stfloor.org>
Cc:     acme@...nel.org, jolsa@...nel.org, linux-kernel@...r.kernel.org,
        mingo@...nel.org, Andi Kleen <ak@...ux.intel.com>
Subject: Re: [PATCH 03/11] perf, tools: Add support for parsing uncore json
 files

On Tue, Jan 03, 2017 at 07:08:25AM -0800, Andi Kleen wrote:
> From: Andi Kleen <ak@...ux.intel.com>
> 
> Handle the Unit field, which is needed to find the right PMU for
> an event. We call it "pmu" and convert it to the perf pmu name
> with an uncore prefix.
> 
> Handle the ExtSel field, which just extends the event mask with
> an additional bit.
> 
> Handle the Filter field which adds parameters to the main event
> to configure filtering.
> 
> Handle the Unit field which declares the unit the values
> should be scaled too (similar to what the kernel exports)
> 
> Set up the perpkg field for uncore events so that perf
> knows they are per package (similar to what the kernel exports)
> 
> Then output the fields into the pmu-events data structures which
> are compiled into perf.
> 
> Filter out zero fields, except for the event itself.
> 
> v2: Fix compilation. Add uncore_ prefix at pre-processing time.
> Move eventcode change to separate patch.
> Signed-off-by: Andi Kleen <ak@...ux.intel.com>

Acked-by: Jiri Olsa <jolsa@...nel.org>

thanks,
jirka