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Date: Mon, 15 Apr 2024 23:15:24 -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 08/16] perf parse-events: Constify parse_events_add_numeric

Allow the term list to be const so that other functions can pass const
term lists. Add const as necessary to called functions.

Signed-off-by: Ian Rogers <irogers@...gle.com>
---
 tools/perf/util/parse-events.c | 20 +++++++++++---------
 tools/perf/util/parse-events.h |  2 +-
 2 files changed, 12 insertions(+), 10 deletions(-)

diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
index 1440a3b4b674..1b408e3dccc7 100644
--- a/tools/perf/util/parse-events.c
+++ b/tools/perf/util/parse-events.c
@@ -34,7 +34,8 @@
 #ifdef PARSER_DEBUG
 extern int parse_events_debug;
 #endif
-static int get_config_terms(struct parse_events_terms *head_config, struct list_head *head_terms);
+static int get_config_terms(const struct parse_events_terms *head_config,
+			    struct list_head *head_terms);
 static int parse_events_terms__copy(const struct parse_events_terms *src,
 				    struct parse_events_terms *dest);
 
@@ -154,7 +155,7 @@ const char *event_type(int type)
 	return "unknown";
 }
 
-static char *get_config_str(struct parse_events_terms *head_terms,
+static char *get_config_str(const struct parse_events_terms *head_terms,
 			    enum parse_events__term_type type_term)
 {
 	struct parse_events_term *term;
@@ -169,12 +170,12 @@ static char *get_config_str(struct parse_events_terms *head_terms,
 	return NULL;
 }
 
-static char *get_config_metric_id(struct parse_events_terms *head_terms)
+static char *get_config_metric_id(const struct parse_events_terms *head_terms)
 {
 	return get_config_str(head_terms, PARSE_EVENTS__TERM_TYPE_METRIC_ID);
 }
 
-static char *get_config_name(struct parse_events_terms *head_terms)
+static char *get_config_name(const struct parse_events_terms *head_terms)
 {
 	return get_config_str(head_terms, PARSE_EVENTS__TERM_TYPE_NAME);
 }
@@ -358,7 +359,7 @@ static int config_term_common(struct perf_event_attr *attr,
 			      struct parse_events_term *term,
 			      struct parse_events_error *err);
 static int config_attr(struct perf_event_attr *attr,
-		       struct parse_events_terms *head,
+		       const struct parse_events_terms *head,
 		       struct parse_events_error *err,
 		       config_term_func_t config_term);
 
@@ -1108,7 +1109,7 @@ static int config_term_tracepoint(struct perf_event_attr *attr,
 #endif
 
 static int config_attr(struct perf_event_attr *attr,
-		       struct parse_events_terms *head,
+		       const struct parse_events_terms *head,
 		       struct parse_events_error *err,
 		       config_term_func_t config_term)
 {
@@ -1121,7 +1122,8 @@ static int config_attr(struct perf_event_attr *attr,
 	return 0;
 }
 
-static int get_config_terms(struct parse_events_terms *head_config, struct list_head *head_terms)
+static int get_config_terms(const struct parse_events_terms *head_config,
+			    struct list_head *head_terms)
 {
 #define ADD_CONFIG_TERM(__type, __weak)				\
 	struct evsel_config_term *__t;			\
@@ -1325,7 +1327,7 @@ int parse_events_add_tracepoint(struct list_head *list, int *idx,
 static int __parse_events_add_numeric(struct parse_events_state *parse_state,
 				struct list_head *list,
 				struct perf_pmu *pmu, u32 type, u32 extended_type,
-				u64 config, struct parse_events_terms *head_config)
+				u64 config, const struct parse_events_terms *head_config)
 {
 	struct perf_event_attr attr;
 	LIST_HEAD(config_terms);
@@ -1361,7 +1363,7 @@ static int __parse_events_add_numeric(struct parse_events_state *parse_state,
 int parse_events_add_numeric(struct parse_events_state *parse_state,
 			     struct list_head *list,
 			     u32 type, u64 config,
-			     struct parse_events_terms *head_config,
+			     const struct parse_events_terms *head_config,
 			     bool wildcard)
 {
 	struct perf_pmu *pmu = NULL;
diff --git a/tools/perf/util/parse-events.h b/tools/perf/util/parse-events.h
index db47913e54bc..5005782766e9 100644
--- a/tools/perf/util/parse-events.h
+++ b/tools/perf/util/parse-events.h
@@ -196,7 +196,7 @@ int parse_events_add_tracepoint(struct list_head *list, int *idx,
 int parse_events_add_numeric(struct parse_events_state *parse_state,
 			     struct list_head *list,
 			     u32 type, u64 config,
-			     struct parse_events_terms *head_config,
+			     const struct parse_events_terms *head_config,
 			     bool wildcard);
 int parse_events_add_tool(struct parse_events_state *parse_state,
 			  struct list_head *list,
-- 
2.44.0.683.g7961c838ac-goog


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