Commit ad106a26 authored by Adrian Hunter's avatar Adrian Hunter Committed by Arnaldo Carvalho de Melo
Browse files

perf intel-pt: Fix sync state when a PSB (synchronization) packet is found 



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: f4aa0819 ("perf tools: Add Intel PT decoder")
Signed-off-by: default avatarAdrian 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: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent 057ae59f

tools/perf/util/intel-pt-decoder/intel-pt-decoder.c

+1 −1
Original line number Diff line number Diff line
@@ -3608,7 +3608,7 @@ static int intel_pt_sync(struct intel_pt_decoder *decoder) 
	}



	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)