From: Adrian Hunter <adrian.hunter@xxxxxxxxx> sync_switch is a facility to synchronize decoding more closely with the point in the kernel when the context actually switched. In one case, INTEL_PT_SS_NOT_TRACING state was not correctly transitioning to INTEL_PT_SS_TRACING state due to a missing case clause. Add it. Signed-off-by: Adrian Hunter <adrian.hunter@xxxxxxxxx> Cc: stable@xxxxxxxxxxxxxxx Link: http://lkml.kernel.org/r/1527762225-26024-2-git-send-email-adrian.hunter@xxxxxxxxx Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx> --- tools/perf/util/intel-pt.c | 1 + 1 file changed, 1 insertion(+) diff --git a/tools/perf/util/intel-pt.c b/tools/perf/util/intel-pt.c index 492986a25ef6..3db7f0ee52a8 100644 --- a/tools/perf/util/intel-pt.c +++ b/tools/perf/util/intel-pt.c @@ -1521,6 +1521,7 @@ static int intel_pt_sample(struct intel_pt_queue *ptq) if (intel_pt_is_switch_ip(ptq, state->to_ip)) { switch (ptq->switch_state) { + case INTEL_PT_SS_NOT_TRACING: case INTEL_PT_SS_UNKNOWN: case INTEL_PT_SS_EXPECTING_SWITCH_IP: err = intel_pt_next_tid(pt, ptq); -- 2.14.3
