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

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Date:   Wed, 23 Nov 2022 15:24:06 -0800
From:   Ian Rogers <irogers@...gle.com>
To:     Namhyung Kim <namhyung@...nel.org>
Cc:     Arnaldo Carvalho de Melo <acme@...nel.org>,
        Jiri Olsa <jolsa@...nel.org>, Ingo Molnar <mingo@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        LKML <linux-kernel@...r.kernel.org>,
        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: Re: [PATCH 07/15] perf stat: Pass const char *prefix to display routines

On Wed, Nov 23, 2022 at 10:02 AM Namhyung Kim <namhyung@...nel.org> wrote:
>
> This is a minor cleanup and preparation for the later change.
>
> Signed-off-by: Namhyung Kim <namhyung@...nel.org>

Acked-by: Ian Rogers <irogers@...gle.com>

Thanks,
Ian

> ---
>  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
>