linux-kernel - [PATCH 07/15] perf stat: Pass const char *prefix to display routines

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Date:   Wed, 23 Nov 2022 10:02:00 -0800
From:   Namhyung Kim <namhyung@...nel.org>
To:     Arnaldo Carvalho de Melo <acme@...nel.org>,
        Jiri Olsa <jolsa@...nel.org>
Cc:     Ingo Molnar <mingo@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Ian Rogers <irogers@...gle.com>,
        Adrian Hunter <adrian.hunter@...el.com>,
        linux-perf-users@...r.kernel.org,
        Kan Liang <kan.liang@...ux.intel.com>,
        Zhengjun Xing <zhengjun.xing@...ux.intel.com>,
        James Clark <james.clark@....com>,
        Athira Jajeev <atrajeev@...ux.vnet.ibm.com>
Subject: [PATCH 07/15] perf stat: Pass const char *prefix to display routines

This is a minor cleanup and preparation for the later change.

Signed-off-by: Namhyung Kim <namhyung@...nel.org>
---
 tools/perf/util/iostat.h       |  2 +-
 tools/perf/util/stat-display.c | 18 +++++++++---------
 2 files changed, 10 insertions(+), 10 deletions(-)

diff --git a/tools/perf/util/iostat.h b/tools/perf/util/iostat.h
index 23c1c46a331a..c22688f87cb2 100644
--- a/tools/perf/util/iostat.h
+++ b/tools/perf/util/iostat.h
@@ -28,7 +28,7 @@ enum iostat_mode_t {
 
 extern enum iostat_mode_t iostat_mode;
 
-typedef void (*iostat_print_counter_t)(struct perf_stat_config *, struct evsel *, char *);
+typedef void (*iostat_print_counter_t)(struct perf_stat_config *, struct evsel *, const char *);
 
 int iostat_prepare(struct evlist *evlist, struct perf_stat_config *config);
 int iostat_parse(const struct option *opt, const char *str,
diff --git a/tools/perf/util/stat-display.c b/tools/perf/util/stat-display.c
index b8432c0a0ec3..d2894a519d61 100644
--- a/tools/perf/util/stat-display.c
+++ b/tools/perf/util/stat-display.c
@@ -675,7 +675,7 @@ static bool is_mixed_hw_group(struct evsel *counter)
 
 static void printout(struct perf_stat_config *config, struct aggr_cpu_id id, int nr,
 		     struct evsel *counter, double uval,
-		     char *prefix, u64 run, u64 ena, double noise,
+		     const char *prefix, u64 run, u64 ena, double noise,
 		     struct runtime_stat *st, int map_idx)
 {
 	struct perf_stat_output_ctx out;
@@ -804,7 +804,7 @@ static void uniquify_counter(struct perf_stat_config *config, struct evsel *coun
 
 static void print_counter_aggrdata(struct perf_stat_config *config,
 				   struct evsel *counter, int s,
-				   char *prefix)
+				   const char *prefix)
 {
 	FILE *output = config->output;
 	u64 ena, run, val;
@@ -843,7 +843,7 @@ static void print_counter_aggrdata(struct perf_stat_config *config,
 
 static void print_metric_begin(struct perf_stat_config *config,
 			       struct evlist *evlist,
-			       char *prefix, int aggr_idx,
+			       const char *prefix, int aggr_idx,
 			       struct cgroup *cgrp)
 {
 	struct perf_stat_aggr *aggr;
@@ -874,7 +874,7 @@ static void print_metric_end(struct perf_stat_config *config)
 
 static void print_aggr(struct perf_stat_config *config,
 		       struct evlist *evlist,
-		       char *prefix)
+		       const char *prefix)
 {
 	struct evsel *counter;
 	int s;
@@ -901,7 +901,7 @@ static void print_aggr(struct perf_stat_config *config,
 
 static void print_aggr_cgroup(struct perf_stat_config *config,
 			      struct evlist *evlist,
-			      char *prefix)
+			      const char *prefix)
 {
 	struct evsel *counter, *evsel;
 	struct cgroup *cgrp = NULL;
@@ -934,7 +934,7 @@ static void print_aggr_cgroup(struct perf_stat_config *config,
 }
 
 static void print_counter(struct perf_stat_config *config,
-			  struct evsel *counter, char *prefix)
+			  struct evsel *counter, const char *prefix)
 {
 	int s;
 
@@ -952,7 +952,7 @@ static void print_counter(struct perf_stat_config *config,
 
 static void print_no_aggr_metric(struct perf_stat_config *config,
 				 struct evlist *evlist,
-				 char *prefix)
+				 const char *prefix)
 {
 	int all_idx;
 	struct perf_cpu cpu;
@@ -1301,7 +1301,7 @@ static void print_footer(struct perf_stat_config *config)
 }
 
 static void print_percore(struct perf_stat_config *config,
-			  struct evsel *counter, char *prefix)
+			  struct evsel *counter, const char *prefix)
 {
 	bool metric_only = config->metric_only;
 	FILE *output = config->output;
@@ -1345,7 +1345,7 @@ static void print_percore(struct perf_stat_config *config,
 }
 
 static void print_cgroup_counter(struct perf_stat_config *config, struct evlist *evlist,
-				 char *prefix)
+				 const char *prefix)
 {
 	struct cgroup *cgrp = NULL;
 	struct evsel *counter;
-- 
2.38.1.584.g0f3c55d4c2-goog