linux-kernel - Re: [PATCH] perf, tools: Make build fail on JSON parse error

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Message-ID: <20170724174454.GR3044@two.firstfloor.org>
Date:   Mon, 24 Jul 2017 10:44:54 -0700
From:   Andi Kleen <andi@...stfloor.org>
To:     Arnaldo Carvalho de Melo <acme@...nel.org>
Cc:     Jiri Olsa <jolsa@...hat.com>,
        Sukadev Bhattiprolu <sukadev@...ux.vnet.ibm.com>,
        Andi Kleen <andi@...stfloor.org>, jolsa@...nel.org,
        linux-kernel@...r.kernel.org, Andi Kleen <ak@...ux.intel.com>
Subject: Re: [PATCH] perf, tools: Make build fail on JSON parse error

On Mon, Jul 24, 2017 at 02:42:09PM -0300, Arnaldo Carvalho de Melo wrote:
> Em Mon, Jul 24, 2017 at 04:16:49PM +0200, Jiri Olsa escreveu:
> > On Fri, Jul 21, 2017 at 05:31:59PM -0700, Sukadev Bhattiprolu wrote:
> > > Andi Kleen [andi@...stfloor.org] wrote:
> > > > From: Andi Kleen <ak@...ux.intel.com>
> > > > 
> > > > Today, when a JSON file fails parsing the build continues,
> > > > but there are no json files built in, which is difficult to debug later.
> > > > Make the build stop on a parse error instead.
> > > 
> > > I see the problem and we were being defensive to not break the build
> > > on architectures that don't yet have the PMU event lists. It will be
> > > good to check build on an architecture other than x86/powerpc.
> > > 
> > > Also, following comments may no longer be applicable?
> > 
> > Isn't the Andi's change only to fail in case there's
> > a real error in process_one_file? I think you can still
> > have empty events dir.
> 
> That explains why all the cross builds failed when I added that cset?

Hmm, let me test. It was supposed to only fail when there
is a file, but it cannot be parsed.

-Andi