commit ad106a26aef3a95ac7ca88d033b431661ba346ce upstream.
When syncing, it may be that branch packet generation is not enabled at that point, in which case there will not immediately be a control-flow packet, so some packets before a control flow packet turns up, get ignored. However, the decoder is in sync as soon as a PSB is found, so the state should be set accordingly.
Fixes: f4aa081949e7b6 ("perf tools: Add Intel PT decoder") Signed-off-by: Adrian Hunter adrian.hunter@intel.com Cc: Jiri Olsa jolsa@redhat.com Cc: stable@vger.kernel.org # v5.15+ Link: https://lore.kernel.org/r/20211210162303.2288710-3-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo acme@redhat.com [Adrian: Backport to v5.10] Signed-off-by: Adrian Hunter adrian.hunter@intel.com --- tools/perf/util/intel-pt-decoder/intel-pt-decoder.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tools/perf/util/intel-pt-decoder/intel-pt-decoder.c b/tools/perf/util/intel-pt-decoder/intel-pt-decoder.c index a49122002768..83e54333f03c 100644 --- a/tools/perf/util/intel-pt-decoder/intel-pt-decoder.c +++ b/tools/perf/util/intel-pt-decoder/intel-pt-decoder.c @@ -2733,7 +2733,7 @@ static int intel_pt_sync(struct intel_pt_decoder *decoder) return err;
decoder->have_last_ip = true; - decoder->pkt_state = INTEL_PT_STATE_NO_IP; + decoder->pkt_state = INTEL_PT_STATE_IN_SYNC;
err = intel_pt_walk_psb(decoder); if (err)