summaryrefslogtreecommitdiffstats
path: root/tools/perf/builtin-evlist.c
diff options
context:
space:
mode:
authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-11 08:27:49 +0000
commitace9429bb58fd418f0c81d4c2835699bddf6bde6 (patch)
treeb2d64bc10158fdd5497876388cd68142ca374ed3 /tools/perf/builtin-evlist.c
parentInitial commit. (diff)
downloadlinux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.tar.xz
linux-ace9429bb58fd418f0c81d4c2835699bddf6bde6.zip
Adding upstream version 6.6.15.upstream/6.6.15
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tools/perf/builtin-evlist.c')
-rw-r--r--tools/perf/builtin-evlist.c95
1 files changed, 95 insertions, 0 deletions
diff --git a/tools/perf/builtin-evlist.c b/tools/perf/builtin-evlist.c
new file mode 100644
index 0000000000..7117656939
--- /dev/null
+++ b/tools/perf/builtin-evlist.c
@@ -0,0 +1,95 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Builtin evlist command: Show the list of event selectors present
+ * in a perf.data file.
+ */
+#include "builtin.h"
+
+#include <linux/list.h>
+
+#include "util/evlist.h"
+#include "util/evsel.h"
+#include "util/evsel_fprintf.h"
+#include "util/parse-events.h"
+#include <subcmd/parse-options.h>
+#include "util/session.h"
+#include "util/data.h"
+#include "util/debug.h"
+#include <linux/err.h>
+#include "util/tool.h"
+#include "util/util.h"
+
+static int process_header_feature(struct perf_session *session __maybe_unused,
+ union perf_event *event __maybe_unused)
+{
+ session_done = 1;
+ return 0;
+}
+
+static int __cmd_evlist(const char *file_name, struct perf_attr_details *details)
+{
+ struct perf_session *session;
+ struct evsel *pos;
+ struct perf_data data = {
+ .path = file_name,
+ .mode = PERF_DATA_MODE_READ,
+ .force = details->force,
+ };
+ struct perf_tool tool = {
+ /* only needed for pipe mode */
+ .attr = perf_event__process_attr,
+ .feature = process_header_feature,
+ };
+ bool has_tracepoint = false;
+
+ session = perf_session__new(&data, &tool);
+ if (IS_ERR(session))
+ return PTR_ERR(session);
+
+ if (data.is_pipe)
+ perf_session__process_events(session);
+
+ evlist__for_each_entry(session->evlist, pos) {
+ evsel__fprintf(pos, details, stdout);
+
+ if (pos->core.attr.type == PERF_TYPE_TRACEPOINT)
+ has_tracepoint = true;
+ }
+
+ if (has_tracepoint && !details->trace_fields)
+ printf("# Tip: use 'perf evlist --trace-fields' to show fields for tracepoint events\n");
+
+ perf_session__delete(session);
+ return 0;
+}
+
+int cmd_evlist(int argc, const char **argv)
+{
+ struct perf_attr_details details = { .verbose = false, };
+ 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_BOOLEAN('g', "group", &details.event_group,
+ "Show event group information"),
+ OPT_BOOLEAN('f', "force", &details.force, "don't complain, do it"),
+ OPT_BOOLEAN(0, "trace-fields", &details.trace_fields, "Show tracepoint fields"),
+ OPT_END()
+ };
+ const char * const evlist_usage[] = {
+ "perf evlist [<options>]",
+ NULL
+ };
+
+ argc = parse_options(argc, argv, options, evlist_usage, 0);
+ if (argc)
+ usage_with_options(evlist_usage, options);
+
+ if (details.event_group && (details.verbose || details.freq)) {
+ usage_with_options_msg(evlist_usage, options,
+ "--group option is not compatible with other options\n");
+ }
+
+ return __cmd_evlist(input_name, &details);
+}