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perf report: Make the output more compact
When we filter by column content we may end up with a column that has the same value for all the lines. So remove that column and tell its unique value on the top, as a comment. Example: [acme@doppio pahole]$ perf report --sort comm,dso,symbol -d ./build/libdwarves.so.1.0.0 -C pahole | head -15 # dso: ./build/libdwarves.so.1.0.0 # comm: pahole # Samples: 58409 # # Overhead Symbol # ........ ...... # 20.93% [.] tag__recode_dwarf_type 14.94% [.] namespace__recode_dwarf_types 10.38% [.] cu__table_add_tag 6.69% [.] __die__process_tag 5.05% [.] die__process_function 4.70% [.] list__for_all_tags 3.68% [.] tag__init 3.48% [.] die__create_new_parameter [acme@doppio pahole]$ Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> LKML-Reference: <1247325517-12272-3-git-send-email-acme@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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27d0fd410c
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@ -583,6 +583,7 @@ struct sort_entry {
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int64_t (*collapse)(struct hist_entry *, struct hist_entry *);
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size_t (*print)(FILE *fp, struct hist_entry *, unsigned int width);
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unsigned int *width;
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bool elide;
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};
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static int64_t cmp_null(void *l, void *r)
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@ -1024,7 +1025,7 @@ hist_entry__fprintf(FILE *fp, struct hist_entry *self, u64 total_samples)
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ret = fprintf(fp, field_sep ? "%lld" : "%12lld ", self->count);
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list_for_each_entry(se, &hist_entry__sort_list, list) {
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if (exclude_other && (se == &sort_parent))
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if (se->elide)
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continue;
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fprintf(fp, "%s", field_sep ?: " ");
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@ -1079,7 +1080,7 @@ resolve_symbol(struct thread *thread, struct map **mapp,
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* with no symbol hit that has a name longer than
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* the ones with symbols sampled.
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*/
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if (!map->dso->slen_calculated)
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if (!sort_dso.elide && !map->dso->slen_calculated)
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dso__calc_col_width(map->dso);
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if (mapp)
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@ -1356,14 +1357,12 @@ static size_t output__fprintf(FILE *fp, u64 total_samples)
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unsigned int width;
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char *col_width = col_width_list_str;
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fprintf(fp, "\n");
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fprintf(fp, "#\n");
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fprintf(fp, "# (%Ld samples)\n", (u64)total_samples);
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fprintf(fp, "# Samples: %Ld\n", (u64)total_samples);
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fprintf(fp, "#\n");
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fprintf(fp, "# Overhead");
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list_for_each_entry(se, &hist_entry__sort_list, list) {
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if (exclude_other && (se == &sort_parent))
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if (se->elide)
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continue;
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if (field_sep) {
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fprintf(fp, "%c%s", *field_sep, se->header);
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@ -1392,7 +1391,7 @@ static size_t output__fprintf(FILE *fp, u64 total_samples)
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list_for_each_entry(se, &hist_entry__sort_list, list) {
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unsigned int i;
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if (exclude_other && (se == &sort_parent))
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if (se->elide)
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continue;
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fprintf(fp, " ");
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@ -2022,7 +2021,8 @@ static void setup_sorting(void)
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}
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static void setup_list(struct strlist **list, const char *list_str,
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const char *list_name)
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struct sort_entry *se, const char *list_name,
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FILE *fp)
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{
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if (list_str) {
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*list = strlist__new(true, list_str);
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@ -2031,6 +2031,11 @@ static void setup_list(struct strlist **list, const char *list_str,
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list_name);
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exit(129);
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}
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if (strlist__nr_entries(*list) == 1) {
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fprintf(fp, "# %s: %s\n", list_name,
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strlist__entry(*list, 0)->s);
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se->elide = true;
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}
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}
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}
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@ -2044,9 +2049,10 @@ int cmd_report(int argc, const char **argv, const char *prefix __used)
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setup_sorting();
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if (parent_pattern != default_parent_pattern)
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if (parent_pattern != default_parent_pattern) {
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sort_dimension__add("parent");
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else
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sort_parent.elide = 1;
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} else
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exclude_other = 0;
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/*
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@ -2055,9 +2061,11 @@ int cmd_report(int argc, const char **argv, const char *prefix __used)
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if (argc)
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usage_with_options(report_usage, options);
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setup_list(&dso_list, dso_list_str, "dso");
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setup_list(&comm_list, comm_list_str, "comm");
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setup_list(&sym_list, sym_list_str, "symbol");
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setup_pager();
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setup_list(&dso_list, dso_list_str, &sort_dso, "dso", stdout);
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setup_list(&comm_list, comm_list_str, &sort_comm, "comm", stdout);
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setup_list(&sym_list, sym_list_str, &sort_sym, "symbol", stdout);
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if (field_sep && *field_sep == '.') {
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fputs("'.' is the only non valid --field-separator argument\n",
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@ -2065,7 +2073,5 @@ int cmd_report(int argc, const char **argv, const char *prefix __used)
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exit(129);
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}
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setup_pager();
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return __cmd_report();
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}
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