From: Franck Bui-Huu <fbuihuu@gmail.com>
Date: Tue, 30 Nov 2010 11:50:14 +0000 (+0100)
Subject: perf header: Don't assume there's no attr info if no sample ids is provided
X-Git-Tag: v2.6.37-rc6~36^3~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=60e677373be9c0bf7c9a22937601d5a40e51c042;p=pandora-kernel.git

perf header: Don't assume there's no attr info if no sample ids is provided

This primarily fixes perf-report, which didn't report the correct type
of event if perf-record was called to record one event different from
'cycles':

  $ perf record -e instructions true
    [ perf record: Woken up 1 times to write data ]
    [ perf record: Captured and wrote 0.007 MB perf.data (~295 samples) ]

  $ perf report | head -n1
    # Events: 7  cycles

LPU-Reference: <m3mxor6nex.fsf@gmail.com>
Signed-off-by: Franck Bui-Huu <fbuihuu@gmail.com>
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