[PATCH v2 3/4] perf tools: Convert to perf_record_header_attr_id()

[Namhyung Kim]

Instead of accessing the attr.id directly, use the
perf_record_header_attr_id() helper to handle old versions.

Signed-off-by: Namhyung Kim <namhyung@xxxxxxxxxx>
---
 tools/perf/util/header.c           | 2 +-
 tools/perf/util/session.c          | 4 ++--
 tools/perf/util/synthetic-events.c | 2 +-
 3 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
index f89321cbfdee..63967c34157d 100644
--- a/tools/perf/util/header.c
+++ b/tools/perf/util/header.c
@@ -4408,7 +4408,7 @@ int perf_event__process_attr(struct perf_tool *tool __maybe_unused,
 	if (perf_evsel__alloc_id(&evsel->core, 1, n_ids))
 		return -ENOMEM;
 
-	ids = (void *)&event->attr.attr + event->attr.attr.size;
+	ids = perf_record_header_attr_id(event);
 	for (i = 0; i < n_ids; i++) {
 		perf_evlist__id_add(&evlist->core, &evsel->core, 0, i, ids[i]);
 	}
diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c
index 00d18c74c090..1e9aa8ed15b6 100644
--- a/tools/perf/util/session.c
+++ b/tools/perf/util/session.c
@@ -833,8 +833,8 @@ static void perf_event__hdr_attr_swap(union perf_event *event,
 	perf_event__attr_swap(&event->attr.attr);
 
 	size = event->header.size;
-	size -= (void *)&event->attr.id - (void *)event;
-	mem_bswap_64(event->attr.id, size);
+	size -= perf_record_header_attr_id(event) - (void *)event;
+	mem_bswap_64(perf_record_header_attr_id(event), size);
 }
 
 static void perf_event__event_update_swap(union perf_event *event,
diff --git a/tools/perf/util/synthetic-events.c b/tools/perf/util/synthetic-events.c
index 45714a2785fd..a0579c7d7b9e 100644
--- a/tools/perf/util/synthetic-events.c
+++ b/tools/perf/util/synthetic-events.c
@@ -2145,7 +2145,7 @@ int perf_event__synthesize_attr(struct perf_tool *tool, struct perf_event_attr *
 		return -ENOMEM;
 
 	ev->attr.attr = *attr;
-	memcpy(ev->attr.id, id, ids * sizeof(u64));
+	memcpy(perf_record_header_attr_id(ev), id, ids * sizeof(u64));
 
 	ev->attr.header.type = PERF_RECORD_HEADER_ATTR;
 	ev->attr.header.size = (u16)size;
-- 
2.42.0.rc1.204.g551eb34607-goog