perf tools: Add machine_pid and vcpu to perf_sample

When parsing a sample with a sample ID, copy machine_pid and vcpu from
perf_sample_id to perf_sample.

Note, machine_pid will be zero when unused, so only a non-zero value
represents a guest machine. vcpu should be ignored if machine_pid is zero.

Note also, machine_pid is used with events that have come from injecting a
guest perf.data file, however guest events recorded on the host (i.e. using
perf kvm) have the (QEMU) hypervisor process pid to identify them - refer
machines__find_for_cpumode().

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Acked-by: Ian Rogers <irogers@google.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: kvm@vger.kernel.org
Link: https://lore.kernel.org/r/20220711093218.10967-14-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/tools/perf/util/event.h b/tools/perf/util/event.h
index cdd72e05fd28..a660f304f83c 100644
--- a/tools/perf/util/event.h
+++ b/tools/perf/util/event.h
@@ -148,6 +148,8 @@ struct perf_sample {
 	u64 code_page_size;
 	u64 cgroup;
 	u32 flags;
+	u32 machine_pid;
+	u32 vcpu;
 	u16 insn_len;
 	u8  cpumode;
 	u16 misc;