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Subject[tip:perf/core] perf annotate stdio: Support --show-nr-samples option
Commit-ID:  1ac39372e06f5009982aaaf890fc5bbd044bb047
Gitweb: http://git.kernel.org/tip/1ac39372e06f5009982aaaf890fc5bbd044bb047
Author: Taeung Song <treeze.taeung@gmail.com>
AuthorDate: Fri, 18 Aug 2017 17:46:48 +0900
Committer: Arnaldo Carvalho de Melo <acme@redhat.com>
CommitDate: Fri, 18 Aug 2017 10:31:53 -0300

perf annotate stdio: Support --show-nr-samples option

Add --show-nr-samples option to "perf annotate" so that it matches "perf
report".

Committer note:

Note that it can't be used together with --show-total-period, which
seems like a silly limitation, that can be lifted at some point.

Made it bail out if not on --stdio.

Signed-off-by: Taeung Song <treeze.taeung@gmail.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Milian Wolff <milian.wolff@kdab.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: http://lkml.kernel.org/r/1503046008-5511-1-git-send-email-treeze.taeung@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/Documentation/perf-annotate.txt | 4 ++++
tools/perf/builtin-annotate.c | 16 ++++++++++++++--
tools/perf/util/annotate.c | 6 +++++-
3 files changed, 23 insertions(+), 3 deletions(-)

diff --git a/tools/perf/Documentation/perf-annotate.txt b/tools/perf/Documentation/perf-annotate.txt
index a89273d..2a5975c 100644
--- a/tools/perf/Documentation/perf-annotate.txt
+++ b/tools/perf/Documentation/perf-annotate.txt
@@ -43,6 +43,10 @@ OPTIONS
--quiet::
Do not show any message. (Suppress -v)

+-n::
+--show-nr-samples::
+ Show the number of samples for each symbol
+
-D::
--dump-raw-trace::
Dump raw trace in ASCII.
diff --git a/tools/perf/builtin-annotate.c b/tools/perf/builtin-annotate.c
index 658c920..89fc038 100644
--- a/tools/perf/builtin-annotate.c
+++ b/tools/perf/builtin-annotate.c
@@ -403,7 +403,7 @@ int cmd_annotate(int argc, const char **argv)
struct perf_data_file file = {
.mode = PERF_DATA_MODE_READ,
};
- const struct option options[] = {
+ struct option options[] = {
OPT_STRING('i', "input", &input_name, "file",
"input file name"),
OPT_STRING('d', "dsos", &symbol_conf.dso_list_str, "dso[,dso...]",
@@ -445,13 +445,20 @@ int cmd_annotate(int argc, const char **argv)
"Show event group information together"),
OPT_BOOLEAN(0, "show-total-period", &symbol_conf.show_total_period,
"Show a column with the sum of periods"),
+ OPT_BOOLEAN('n', "show-nr-samples", &symbol_conf.show_nr_samples,
+ "Show a column with the number of samples"),
OPT_CALLBACK_DEFAULT(0, "stdio-color", NULL, "mode",
"'always' (default), 'never' or 'auto' only applicable to --stdio mode",
stdio__config_color, "always"),
OPT_END()
};
- int ret = hists__init();
+ int ret;
+
+ set_option_flag(options, 0, "show-total-period", PARSE_OPT_EXCLUSIVE);
+ set_option_flag(options, 0, "show-nr-samples", PARSE_OPT_EXCLUSIVE);
+

+ ret = hists__init();
if (ret < 0)
return ret;

@@ -467,6 +474,11 @@ int cmd_annotate(int argc, const char **argv)
annotate.sym_hist_filter = argv[0];
}

+ if (symbol_conf.show_nr_samples && !annotate.use_stdio) {
+ pr_err("--show-nr-samples is only available in --stdio mode at this time\n");
+ return ret;
+ }
+
if (quiet)
perf_quiet_option();

diff --git a/tools/perf/util/annotate.c b/tools/perf/util/annotate.c
index 2dab0e5..4397a8b 100644
--- a/tools/perf/util/annotate.c
+++ b/tools/perf/util/annotate.c
@@ -1145,6 +1145,9 @@ static int disasm_line__print(struct disasm_line *dl, struct symbol *sym, u64 st
if (symbol_conf.show_total_period)
color_fprintf(stdout, color, " %11" PRIu64,
sample.period);
+ else if (symbol_conf.show_nr_samples)
+ color_fprintf(stdout, color, " %7" PRIu64,
+ sample.nr_samples);
else
color_fprintf(stdout, color, " %7.2f", percent);
}
@@ -1825,7 +1828,8 @@ int symbol__annotate_printf(struct symbol *sym, struct map *map,
width *= evsel->nr_members;

graph_dotted_len = printf(" %-*.*s| Source code & Disassembly of %s for %s (%" PRIu64 " samples)\n",
- width, width, symbol_conf.show_total_period ? "Event count" : "Percent",
+ width, width, symbol_conf.show_total_period ? "Period" :
+ symbol_conf.show_nr_samples ? "Samples" : "Percent",
d_filename, evsel_name, h->nr_samples);

printf("%-*.*s----\n",
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