linux-kernel - Re: [PATCH 20/57] perf c2c report: Add dcacheline dimension key

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Date:   Wed, 5 Oct 2016 00:46:12 +0200
From:   Jiri Olsa <jolsa@...hat.com>
To:     Arnaldo Carvalho de Melo <acme@...nel.org>
Cc:     Jiri Olsa <jolsa@...nel.org>, lkml <linux-kernel@...r.kernel.org>,
        Don Zickus <dzickus@...hat.com>, Joe Mario <jmario@...hat.com>,
        Ingo Molnar <mingo@...nel.org>,
        Peter Zijlstra <a.p.zijlstra@...llo.nl>,
        Namhyung Kim <namhyung@...nel.org>,
        David Ahern <dsahern@...il.com>,
        Andi Kleen <andi@...stfloor.org>
Subject: Re: [PATCH 20/57] perf c2c report: Add dcacheline dimension key

On Tue, Oct 04, 2016 at 01:50:12PM -0300, Arnaldo Carvalho de Melo wrote:
> Em Thu, Sep 22, 2016 at 05:36:48PM +0200, Jiri Olsa escreveu:
> > Adding dcacheline dimension key support. It
> > displays cacheline address as hex number.
> > 
> > Using c2c wrapper to standard 'dcacheline' object
> > to defined own header and simple (just address)
> > cacheline output.
> 
> So, at this point I move from:
> 
>   # perf c2c report
>    Error: Invalid --fields key: `dcacheline'
>   #
> 
> To:
> 
>   [root@...et ~]# perf c2c report
>   Error: Unknown --fields key: `offset'
>   Segmentation fault (core dumped)
>   [root@...et ~]#

oops, attached patch should fix that, but I needed to change
following patches:

  perf c2c report: Add cacheline hists processing
  perf c2c report: Decode c2c_stats for hist entries

I updated perf/c2c_v4 branch with the fix and rebased
to your current perf/core.. let me know if I need to
repost

thanks,
jirka


---
diff --git a/tools/perf/builtin-c2c.c b/tools/perf/builtin-c2c.c
index 335c0fd30757..74c7822460e1 100644
--- a/tools/perf/builtin-c2c.c
+++ b/tools/perf/builtin-c2c.c
@@ -86,7 +86,7 @@ he__get_c2c_hists(struct hist_entry *he,
 
 	ret = c2c_hists__init(hists, sort);
 	if (ret)
-		free(hists);
+		zfree(&hists);
 
 	return hists;
 }