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Subject: Does perf inject preserve call chain data?
From: Tim Chen <tim.c.chen@linux.intel.com>
To: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Cc: linux-kernel <linux-kernel@vger.kernel.org>, "; ak"@linux.intel.com
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Date: Tue, 22 May 2012 11:49:45 -0700
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Arnaldo,

Wonder if perf inject munged the call chain data from perf record?

When I do
perf record -a -g -o - sleep 5 |perf inject -v -b  | perf report  -g -i -
I get a complain from perf report

Warning:
Selected -g but no callchain data. Did you call 'perf record' without -g?

Thanks.

Tim