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Diffstat (limited to 'tools/perf/builtin-trace.c')
-rw-r--r--tools/perf/builtin-trace.c51
1 files changed, 34 insertions, 17 deletions
diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index dddf3f01b5ab..40a6a2992d15 100644
--- a/tools/perf/builtin-trace.c
+++ b/tools/perf/builtin-trace.c
@@ -1,18 +1,22 @@
#include "builtin.h"
-#include "util/util.h"
+#include "perf.h"
#include "util/cache.h"
+#include "util/debug.h"
+#include "util/exec_cmd.h"
+#include "util/header.h"
+#include "util/parse-options.h"
+#include "util/session.h"
#include "util/symbol.h"
#include "util/thread.h"
-#include "util/header.h"
-#include "util/exec_cmd.h"
#include "util/trace-event.h"
-#include "util/session.h"
+#include "util/util.h"
static char const *script_name;
static char const *generate_script_lang;
-static bool debug_ordering;
+static bool debug_mode;
static u64 last_timestamp;
+static u64 nr_unordered;
static int default_start_script(const char *script __unused,
int argc __unused,
@@ -58,14 +62,6 @@ static int cleanup_scripting(void)
return scripting_ops->stop_script();
}
-#include "util/parse-options.h"
-
-#include "perf.h"
-#include "util/debug.h"
-
-#include "util/trace-event.h"
-#include "util/exec_cmd.h"
-
static char const *input_name = "perf.data";
static int process_sample_event(event_t *event, struct perf_session *session)
@@ -91,13 +87,15 @@ static int process_sample_event(event_t *event, struct perf_session *session)
}
if (session->sample_type & PERF_SAMPLE_RAW) {
- if (debug_ordering) {
+ if (debug_mode) {
if (data.time < last_timestamp) {
pr_err("Samples misordered, previous: %llu "
"this: %llu\n", last_timestamp,
data.time);
+ nr_unordered++;
}
last_timestamp = data.time;
+ return 0;
}
/*
* FIXME: better resolve from pid from the struct trace_entry
@@ -113,6 +111,15 @@ static int process_sample_event(event_t *event, struct perf_session *session)
return 0;
}
+static u64 nr_lost;
+
+static int process_lost_event(event_t *event, struct perf_session *session __used)
+{
+ nr_lost += event->lost.lost;
+
+ return 0;
+}
+
static struct perf_event_ops event_ops = {
.sample = process_sample_event,
.comm = event__process_comm,
@@ -120,6 +127,7 @@ static struct perf_event_ops event_ops = {
.event_type = event__process_event_type,
.tracing_data = event__process_tracing_data,
.build_id = event__process_build_id,
+ .lost = process_lost_event,
.ordered_samples = true,
};
@@ -132,9 +140,18 @@ static void sig_handler(int sig __unused)
static int __cmd_trace(struct perf_session *session)
{
+ int ret;
+
signal(SIGINT, sig_handler);
- return perf_session__process_events(session, &event_ops);
+ ret = perf_session__process_events(session, &event_ops);
+
+ if (debug_mode) {
+ pr_err("Misordered timestamps: %llu\n", nr_unordered);
+ pr_err("Lost events: %llu\n", nr_lost);
+ }
+
+ return ret;
}
struct script_spec {
@@ -544,8 +561,8 @@ static const struct option options[] = {
"generate perf-trace.xx script in specified language"),
OPT_STRING('i', "input", &input_name, "file",
"input file name"),
- OPT_BOOLEAN('d', "debug-ordering", &debug_ordering,
- "check that samples time ordering is monotonic"),
+ OPT_BOOLEAN('d', "debug-mode", &debug_mode,
+ "do various checks like samples ordering and lost events"),
OPT_END()
};