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Date: Wed, 23 May 2012 08:32:21 -0700
From: tip-bot for Arnaldo Carvalho de Melo <acme@...hat.com>
To: linux-tip-commits@...r.kernel.org
Cc: linux-kernel@...r.kernel.org, eranian@...gle.com, paulus@...ba.org,
acme@...hat.com, hpa@...or.com, mingo@...nel.org,
peterz@...radead.org, efault@....de, namhyung@...il.com,
fweisbec@...il.com, dsahern@...il.com, tglx@...utronix.de
Subject: [tip:perf/core] perf evlist: Show event attribute details
Commit-ID: 26252ea675663d1bc6747125fcaa2b7cc4ed8a03
Gitweb: http://git.kernel.org/tip/26252ea675663d1bc6747125fcaa2b7cc4ed8a03
Author: Arnaldo Carvalho de Melo <acme@...hat.com>
AuthorDate: Tue, 22 May 2012 14:30:11 -0300
Committer: Arnaldo Carvalho de Melo <acme@...hat.com>
CommitDate: Tue, 22 May 2012 14:30:11 -0300
perf evlist: Show event attribute details
There was no easy way to see the frequency used, and with the change of
default, we better provide one.
[root@...dy linux]# perf evlist -F
cycles: sample_freq=4000
[root@...dy linux]# perf evlist -v
cycles: sample_freq=4000, size: 80, sample_type: 391, read_format: 7, disabled: 1, inherit: 1, mmap: 1, comm: 1, freq: 1, sample_id_all: 1, exclude_guest: 1
[root@...dy linux]#
Cc: David Ahern <dsahern@...il.com>
Cc: Frederic Weisbecker <fweisbec@...il.com>
Cc: Mike Galbraith <efault@....de>
Cc: Namhyung Kim <namhyung@...il.com>
Cc: Paul Mackerras <paulus@...ba.org>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Stephane Eranian <eranian@...gle.com>
Link: http://lkml.kernel.org/n/tip-e1p9poez3nwrgycbmwqmhlsu@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
tools/perf/Documentation/perf-evlist.txt | 8 ++
tools/perf/builtin-evlist.c | 103 ++++++++++++++++++++++++++---
2 files changed, 100 insertions(+), 11 deletions(-)
diff --git a/tools/perf/Documentation/perf-evlist.txt b/tools/perf/Documentation/perf-evlist.txt
index 0507ec7..1521734 100644
--- a/tools/perf/Documentation/perf-evlist.txt
+++ b/tools/perf/Documentation/perf-evlist.txt
@@ -20,6 +20,14 @@ OPTIONS
--input=::
Input file name. (default: perf.data unless stdin is a fifo)
+-F::
+--freq=::
+ Show just the sample frequency used for each event.
+
+-v::
+--verbose=::
+ Show all fields.
+
SEE ALSO
--------
linkperf:perf-record[1], linkperf:perf-list[1],
diff --git a/tools/perf/builtin-evlist.c b/tools/perf/builtin-evlist.c
index 2676032..e52d77e 100644
--- a/tools/perf/builtin-evlist.c
+++ b/tools/perf/builtin-evlist.c
@@ -15,9 +15,40 @@
#include "util/parse-options.h"
#include "util/session.h"
-static const char *input_name;
+struct perf_attr_details {
+ bool freq;
+ bool verbose;
+};
+
+static int comma_printf(bool *first, const char *fmt, ...)
+{
+ va_list args;
+ int ret = 0;
+
+ if (!*first) {
+ ret += printf(",");
+ } else {
+ ret += printf(":");
+ *first = false;
+ }
+
+ va_start(args, fmt);
+ ret += vprintf(fmt, args);
+ va_end(args);
+ return ret;
+}
+
+static int __if_print(bool *first, const char *field, u64 value)
+{
+ if (value == 0)
+ return 0;
+
+ return comma_printf(first, " %s: %" PRIu64, field, value);
+}
+
+#define if_print(field) __if_print(&first, #field, pos->attr.field)
-static int __cmd_evlist(void)
+static int __cmd_evlist(const char *input_name, struct perf_attr_details *details)
{
struct perf_session *session;
struct perf_evsel *pos;
@@ -26,8 +57,52 @@ static int __cmd_evlist(void)
if (session == NULL)
return -ENOMEM;
- list_for_each_entry(pos, &session->evlist->entries, node)
- printf("%s\n", event_name(pos));
+ list_for_each_entry(pos, &session->evlist->entries, node) {
+ bool first = true;
+
+ printf("%s", event_name(pos));
+
+ if (details->verbose || details->freq) {
+ comma_printf(&first, " sample_freq=%" PRIu64,
+ (u64)pos->attr.sample_freq);
+ }
+
+ if (details->verbose) {
+ if_print(type);
+ if_print(config);
+ if_print(config1);
+ if_print(config2);
+ if_print(size);
+ if_print(sample_type);
+ if_print(read_format);
+ if_print(disabled);
+ if_print(inherit);
+ if_print(pinned);
+ if_print(exclusive);
+ if_print(exclude_user);
+ if_print(exclude_kernel);
+ if_print(exclude_hv);
+ if_print(exclude_idle);
+ if_print(mmap);
+ if_print(comm);
+ if_print(freq);
+ if_print(inherit_stat);
+ if_print(enable_on_exec);
+ if_print(task);
+ if_print(watermark);
+ if_print(precise_ip);
+ if_print(mmap_data);
+ if_print(sample_id_all);
+ if_print(exclude_host);
+ if_print(exclude_guest);
+ if_print(__reserved_1);
+ if_print(wakeup_events);
+ if_print(bp_type);
+ if_print(branch_sample_type);
+ }
+
+ putchar('\n');
+ }
perf_session__delete(session);
return 0;
@@ -38,17 +113,23 @@ static const char * const evlist_usage[] = {
NULL
};
-static const struct option options[] = {
- OPT_STRING('i', "input", &input_name, "file",
- "input file name"),
- OPT_END()
-};
-
int cmd_evlist(int argc, const char **argv, const char *prefix __used)
{
+ struct perf_attr_details details = { .verbose = false, };
+ const char *input_name;
+ const struct option options[] = {
+ OPT_STRING('i', "input", &input_name, "file",
+ "Input file name"),
+ OPT_BOOLEAN('F', "freq", &details.freq,
+ "Show the sample frequency"),
+ OPT_BOOLEAN('v', "verbose", &details.verbose,
+ "Show all event attr details"),
+ OPT_END()
+ };
+
argc = parse_options(argc, argv, options, evlist_usage, 0);
if (argc)
usage_with_options(evlist_usage, options);
- return __cmd_evlist();
+ return __cmd_evlist(input_name, &details);
}
--
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