Messages in this thread Patch in this message | | | From | Ravi Bangoria <> | Subject | [PATCH v4 6/7] perf/sdt: List events fetched from uprobe_events | Date | Mon, 6 Mar 2017 18:43:03 +0530 |
| |
List those events which are fetched from uprobe_events as 'event addr@file' followed by hint on how these events can be deleted with 'perf probe -d' command.
For example: $ sudo cat /sys/kernel/debug/tracing/uprobe_events p:sdt_libpthread/mutex_release /usr/lib64/libpthread-2.24.so:0x000000000000b126
$ sudo ./perf record -a -e sdt_libpthread:mutex_release Matching event(s) from uprobe_events: sdt_libpthread:mutex_release 0xb126@/usr/lib64/libpthread-2.24.so Use 'perf probe -d <event>' to delete event(s).
Signed-off-by: Ravi Bangoria <ravi.bangoria@linux.vnet.ibm.com> --- tools/perf/util/probe-file.c | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+)
diff --git a/tools/perf/util/probe-file.c b/tools/perf/util/probe-file.c index 90444e5..7d52efe 100644 --- a/tools/perf/util/probe-file.c +++ b/tools/perf/util/probe-file.c @@ -1010,6 +1010,24 @@ static void sdt_warn_multi_events(int ctr, struct perf_probe_event *pev) ctr, pev->group, pev->event); } +static void print_exst_sdt_events(struct probe_trace_event *tev) +{ + static bool msg_head; + + if (!msg_head) { + pr_info("Matching event(s) from uprobe_events:\n"); + msg_head = true; + } + + pr_info(" %s:%s 0x%" PRIx64 "@%s\n", tev->group, + tev->event, tev->point.address, tev->point.module); +} + +static void print_exst_sdt_event_footer(void) +{ + pr_info("Use 'perf probe -d <event>' to delete event(s).\n\n"); +} + static int sdt_event_probepoint_exists(struct perf_probe_event *pev, struct probe_trace_event *tevs, int ntevs, @@ -1024,10 +1042,14 @@ static int sdt_event_probepoint_exists(struct perf_probe_event *pev, if (ret < 0) return ret; + print_exst_sdt_events(&tevs[i]); ctr++; } } + if (ctr > 0) + print_exst_sdt_event_footer(); + if (ctr > 1) sdt_warn_multi_events(ctr, pev); @@ -1088,11 +1110,16 @@ static int sdt_merge_events(struct perf_probe_event *pev, if (!ptrn_used) shift_sdt_events(pev, i); + + print_exst_sdt_events(&exst_tevs[j]); ctr++; } } } + if (ctr > 0) + print_exst_sdt_event_footer(); + if (!ptrn_used || ctr == 0) { /* * Create probe point for all probe-cached events by -- 2.9.3
| |