linux-kernel - [PATCH v1 8/8] libperf event: Ensure tracing data is multiple of 8 sized

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Message-Id: <20241213210425.526512-9-irogers@google.com>
Date: Fri, 13 Dec 2024 13:04:25 -0800
From: Ian Rogers <irogers@...gle.com>
To: Peter Zijlstra <peterz@...radead.org>, Ingo Molnar <mingo@...hat.com>, 
	Arnaldo Carvalho de Melo <acme@...nel.org>, Namhyung Kim <namhyung@...nel.org>, 
	Mark Rutland <mark.rutland@....com>, 
	Alexander Shishkin <alexander.shishkin@...ux.intel.com>, Jiri Olsa <jolsa@...nel.org>, 
	Ian Rogers <irogers@...gle.com>, Adrian Hunter <adrian.hunter@...el.com>, 
	Kan Liang <kan.liang@...ux.intel.com>, "Mike Rapoport (IBM)" <rppt@...nel.org>, 
	Wei Yang <richard.weiyang@...il.com>, James Clark <james.clark@...aro.org>, 
	Howard Chu <howardchu95@...il.com>, Kajol Jain <kjain@...ux.ibm.com>, 
	Athira Rajeev <atrajeev@...ux.vnet.ibm.com>, Ze Gao <zegao2021@...il.com>, 
	Weilin Wang <weilin.wang@...el.com>, linux-kernel@...r.kernel.org, 
	linux-perf-users@...r.kernel.org
Subject: [PATCH v1 8/8] libperf event: Ensure tracing data is multiple of 8 sized

Perf's synthetic-events.c will ensure 8-byte alignment of tracing
data, writing it after a perf_record_header_tracing_data event. Add
padding to struct perf_record_header_tracing_data to make it 16-byte
rather than 12-byte sized.

Fixes: 055c67ed3988 ("perf tools: Move event synthesizing routines to separate .c file")
Signed-off-by: Ian Rogers <irogers@...gle.com>
---
 tools/lib/perf/include/perf/event.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tools/lib/perf/include/perf/event.h b/tools/lib/perf/include/perf/event.h
index 37bb7771d914..32b75c0326c9 100644
--- a/tools/lib/perf/include/perf/event.h
+++ b/tools/lib/perf/include/perf/event.h
@@ -291,6 +291,7 @@ struct perf_record_header_event_type {
 struct perf_record_header_tracing_data {
 	struct perf_event_header header;
 	__u32			 size;
+	__u32			 pad;
 };
 
 #define PERF_RECORD_MISC_BUILD_ID_SIZE (1 << 15)
-- 
2.47.1.613.gc27f4b7a9f-goog