diff options
Diffstat (limited to 'tools/perf/util/intel-pt.c')
| -rw-r--r-- | tools/perf/util/intel-pt.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/tools/perf/util/intel-pt.c b/tools/perf/util/intel-pt.c index 98b097fec476..dc2af64f9e31 100644 --- a/tools/perf/util/intel-pt.c +++ b/tools/perf/util/intel-pt.c @@ -74,6 +74,7 @@ struct intel_pt { bool data_queued; bool est_tsc; bool sync_switch; + bool sync_switch_not_supported; bool mispred_all; bool use_thread_stack; bool callstack; @@ -2638,6 +2639,9 @@ static void intel_pt_enable_sync_switch(struct intel_pt *pt) { unsigned int i; + if (pt->sync_switch_not_supported) + return; + pt->sync_switch = true; for (i = 0; i < pt->queues.nr_queues; i++) { @@ -2649,6 +2653,23 @@ static void intel_pt_enable_sync_switch(struct intel_pt *pt) } } +static void intel_pt_disable_sync_switch(struct intel_pt *pt) +{ + unsigned int i; + + pt->sync_switch = false; + + for (i = 0; i < pt->queues.nr_queues; i++) { + struct auxtrace_queue *queue = &pt->queues.queue_array[i]; + struct intel_pt_queue *ptq = queue->priv; + + if (ptq) { + ptq->sync_switch = false; + intel_pt_next_tid(pt, ptq); + } + } +} + /* * To filter against time ranges, it is only necessary to look at the next start * or end time. @@ -3090,6 +3111,14 @@ static int intel_pt_guest_context_switch(struct intel_pt *pt, pt->have_guest_sideband = true; + /* + * sync_switch cannot handle guest machines at present, so just disable + * it. + */ + pt->sync_switch_not_supported = true; + if (pt->sync_switch) + intel_pt_disable_sync_switch(pt); + if (out) return 0; |