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

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commit 622b7a47b843c78626f40c1d1aeef8483383fba2 upstream.

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>
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Adrian Hunter 2017-05-26 11:17:08 +03:00 committed by Greg Kroah-Hartman
parent 5a16bd39c5
commit 94c38cd0af
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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@ -1880,14 +1880,10 @@ static int intel_pt_walk_to_ip(struct intel_pt_decoder *decoder)
break;
case INTEL_PT_FUP:
if (decoder->overflow) {
if (intel_pt_have_ip(decoder))
intel_pt_set_ip(decoder);
if (decoder->ip)
return 0;
}
if (decoder->packet.count && decoder->have_last_ip)
intel_pt_set_last_ip(decoder);
if (intel_pt_have_ip(decoder))
intel_pt_set_ip(decoder);
if (decoder->ip)
return 0;
break;
case INTEL_PT_MTC: