[PATCH v1 2/4] perf off-cpu: Write the sample ID for PERF_SAMPLE_ID

[Ian Rogers <irogers@google.com>]

OFFCPU_SAMPLE_TYPES allows PERF_SAMPLE_ID, and the sample ID is
computed, but off_cpu_write() only wrote it for PERF_SAMPLE_IDENTIFIER.
When PERF_SAMPLE_ID was set the synthesized samples were one u64 short,
so the remaining fields were misparsed. Write the ID after the time as
the sample format requires.

Fixes: edc41a1099c2 ("perf record: Enable off-cpu analysis with BPF")
Signed-off-by: Ian Rogers <irogers@google.com>
---
 tools/perf/util/bpf_off_cpu.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/tools/perf/util/bpf_off_cpu.c b/tools/perf/util/bpf_off_cpu.c
index ff8935688b43..16948761cc45 100644
--- a/tools/perf/util/bpf_off_cpu.c
+++ b/tools/perf/util/bpf_off_cpu.c
@@ -373,6 +373,8 @@ int off_cpu_write(struct perf_session *session)
 			data.array[n++] = 0;
 		if (sample_type & PERF_SAMPLE_TIME)
 			data.array[n++] = tstamp;
+		if (sample_type & PERF_SAMPLE_ID)
+			data.array[n++] = sid;
 		if (sample_type & PERF_SAMPLE_CPU)
 			data.array[n++] = 0;
 		if (sample_type & PERF_SAMPLE_PERIOD)
-- 
2.56.0.313.g2479322e68-goog