diff options
| -rw-r--r-- | tools/perf/util/probe-event.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/tools/perf/util/probe-event.c b/tools/perf/util/probe-event.c index 2903341a4309..2c8d94d09e86 100644 --- a/tools/perf/util/probe-event.c +++ b/tools/perf/util/probe-event.c @@ -2760,7 +2760,10 @@ static int get_new_event_name(char *buf, size_t len, const char *base, /* Try no suffix number */ ret = e_snprintf(buf, len, "%s%s", nbase, ret_event ? "__return" : ""); if (ret < 0) { - pr_warning("snprintf() failed: %d; the event name nbase='%s' is too long\n", ret, nbase); + pr_warning("snprintf() failed: %d; the event name '%s' is too long\n" + " Hint: Set a shorter event with syntax \"EVENT=PROBEDEF\"\n" + " EVENT: Event name (max length: %d bytes).\n", + ret, nbase, MAX_EVENT_NAME_LEN); goto out; } if (!strlist__has_entry(namelist, buf)) @@ -2780,7 +2783,10 @@ static int get_new_event_name(char *buf, size_t len, const char *base, for (i = 1; i < MAX_EVENT_INDEX; i++) { ret = e_snprintf(buf, len, "%s_%d", nbase, i); if (ret < 0) { - pr_debug("snprintf() failed: %d\n", ret); + pr_warning("Add suffix failed: %d; the event name '%s' is too long\n" + " Hint: Set a shorter event with syntax \"EVENT=PROBEDEF\"\n" + " EVENT: Event name (max length: %d bytes).\n", + ret, nbase, MAX_EVENT_NAME_LEN); goto out; } if (!strlist__has_entry(namelist, buf)) |