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perf intel-pt: Use FUP always when scanning for an IP

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The decoder will try to use branch packets to find an IP to start decoding
or to recover from errors. Currently the FUP packet is used only in the
case of an overflow, however there is no reason for that to be a special
case. So just use FUP always when scanning for an IP.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: stable@vger.kernel.org
Link: http://lkml.kernel.org/r/1495786658-18063-8-git-send-email-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Adrian Hunter 2017-05-26 11:17:08 +03:00 committed by Arnaldo Carvalho de Melo
parent f952eaceb0
commit 622b7a47b8
1 changed files with 4 additions and 8 deletions
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12
tools/perf/util/intel-pt-decoder/intel-pt-decoder.c
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@ -1882,14 +1882,10 @@ static int intel_pt_walk_to_ip(struct intel_pt_decoder *decoder)
break; break;
case INTEL_PT_FUP: case INTEL_PT_FUP:
if (decoder->overflow) { if (intel_pt_have_ip(decoder))
if (intel_pt_have_ip(decoder)) intel_pt_set_ip(decoder);
intel_pt_set_ip(decoder); if (decoder->ip)
if (decoder->ip) return 0;
return 0;
}
if (decoder->packet.count && decoder->have_last_ip)
intel_pt_set_last_ip(decoder);
break; break;
case INTEL_PT_MTC: case INTEL_PT_MTC: