linux-kernel - [PATCH v2 14/16] perf parse-event: Constify event

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Date: Mon, 15 Apr 2024 23:15:30 -0700
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>, James Clark <james.clark@....com>, 
	linux-perf-users@...r.kernel.org, linux-kernel@...r.kernel.org, 
	bpf@...r.kernel.org, Atish Patra <atishp@...osinc.com>, linux-riscv@...ts.infradead.org, 
	Beeman Strong <beeman@...osinc.com>
Subject: [PATCH v2 14/16] perf parse-event: Constify event_symbol arrays

Moves 352 bytes from .data to .data.rel.ro.

Signed-off-by: Ian Rogers <irogers@...gle.com>
---
 tools/perf/util/parse-events.c | 4 ++--
 tools/perf/util/parse-events.h | 4 ++--
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
index 3ab533d0e653..8d3d692d219d 100644
--- a/tools/perf/util/parse-events.c
+++ b/tools/perf/util/parse-events.c
@@ -39,7 +39,7 @@ static int get_config_terms(const struct parse_events_terms *head_config,
 static int parse_events_terms__copy(const struct parse_events_terms *src,
 				    struct parse_events_terms *dest);
 
-struct event_symbol event_symbols_hw[PERF_COUNT_HW_MAX] = {
+const struct event_symbol event_symbols_hw[PERF_COUNT_HW_MAX] = {
 	[PERF_COUNT_HW_CPU_CYCLES] = {
 		.symbol = "cpu-cycles",
 		.alias  = "cycles",
@@ -82,7 +82,7 @@ struct event_symbol event_symbols_hw[PERF_COUNT_HW_MAX] = {
 	},
 };
 
-struct event_symbol event_symbols_sw[PERF_COUNT_SW_MAX] = {
+const struct event_symbol event_symbols_sw[PERF_COUNT_SW_MAX] = {
 	[PERF_COUNT_SW_CPU_CLOCK] = {
 		.symbol = "cpu-clock",
 		.alias  = "",
diff --git a/tools/perf/util/parse-events.h b/tools/perf/util/parse-events.h
index f104faef1a78..0bb5f0c80a5e 100644
--- a/tools/perf/util/parse-events.h
+++ b/tools/perf/util/parse-events.h
@@ -250,8 +250,8 @@ struct event_symbol {
 	const char	*symbol;
 	const char	*alias;
 };
-extern struct event_symbol event_symbols_hw[];
-extern struct event_symbol event_symbols_sw[];
+extern const struct event_symbol event_symbols_hw[];
+extern const struct event_symbol event_symbols_sw[];
 
 char *parse_events_formats_error_string(char *additional_terms);
 
-- 
2.44.0.683.g7961c838ac-goog