[PATCH 34/35] perf intel-pt: Use guest pid/tid etc in guest samples

Adrian Hunter
2022-07-11T10:15:23Z

When decoding with guest sideband information, for VMX non-root (NR)
i.e. guest events, replace the host (hypervisor) pid/tid with guest values,
and provide also the new machine_pid and vcpu values.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
---
tools/perf/util/intel-pt.c | 11 +++++++++++
1 file changed, 11 insertions(+)

diff --git a/tools/perf/util/intel-pt.c b/tools/perf/util/intel-pt.c
index 143a096b567b..d5e9fc8106dd 100644
--- a/tools/perf/util/intel-pt.c
+++ b/tools/perf/util/intel-pt.c
@@ -1657,6 +1657,17 @@ static void intel_pt_prep_a_sample(struct intel_pt_queue *ptq,

sample->pid = ptq->pid;
sample->tid = ptq->tid;
+
+ if (ptq->pt->have_guest_sideband) {
+ if ((ptq->state->from_ip && ptq->state->from_nr) ||
+ (ptq->state->to_ip && ptq->state->to_nr)) {
+ sample->pid = ptq->guest_pid;
+ sample->tid = ptq->guest_tid;
+ sample->machine_pid = ptq->guest_machine_pid;
+ sample->vcpu = ptq->vcpu;
+ }
+ }
+
sample->cpu = ptq->cpu;
sample->insn_len = ptq->insn_len;
memcpy(sample->insn, ptq->insn, INTEL_PT_INSN_BUF_SZ);
--
2.25.1