perf probe: Show in what binaries/modules probes are set

Show the name of binary file or modules in which the probes are set with
--list option.

Without this change;

  # ./perf probe -m drm drm_av_sync_delay
  # ./perf probe -x perf dso__load_vmlinux

  # ./perf probe -l
    probe:drm_av_sync_delay (on drm_av_sync_delay)
    probe_perf:dso__load_vmlinux (on 0x000000000006d110)

With this change;

  # ./perf probe -l
    probe:drm_av_sync_delay (on drm_av_sync_delay in drm)
    probe_perf:dso__load_vmlinux (on 0x000000000006d110 in /kbuild/ksrc/linux-3/tools/perf/perf)

Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: "David A. Long" <dave.long@linaro.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: yrl.pp-manager.tt@hitachi.com
Link: http://lkml.kernel.org/r/20140206053213.29635.69948.stgit@kbuild-fedora.yrl.intra.hitachi.co.jp
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

1 files changed, 7 insertions, 3 deletions

diff --git a/tools/perf/util/probe-event.c b/tools/perf/util/probe-event.c
index ace3ba37c880..de9fe906f3be 100644
--- a/tools/perf/util/probe-event.c
+++ b/tools/perf/util/probe-event.c
@@ -1728,7 +1728,8 @@ static struct strlist *get_probe_trace_command_rawlist(int fd)
 }
 
 /* Show an event */
-static int show_perf_probe_event(struct perf_probe_event *pev)
+static int show_perf_probe_event(struct perf_probe_event *pev,
+                                 const char *module)
 {
         int i, ret;
         char buf[128];
@@ -1744,6 +1745,8 @@ static int show_perf_probe_event(struct perf_probe_event *pev)
                 return ret;
 
         printf("  %-20s (on %s", buf, place);
+        if (module)
+                printf(" in %s", module);
 
         if (pev->nargs > 0) {
                 printf(" with");
@@ -1781,7 +1784,8 @@ static int __show_perf_probe_events(int fd, bool is_kprobe)
                         ret = convert_to_perf_probe_event(&tev, &pev,
                                                                 is_kprobe);
                         if (ret >= 0)
-                                ret = show_perf_probe_event(&pev);
+                                ret = show_perf_probe_event(&pev,
+                                                            tev.point.module);
                 }
                 clear_perf_probe_event(&pev);
                 clear_probe_trace_event(&tev);
@@ -1980,7 +1984,7 @@ static int __add_probe_trace_events(struct perf_probe_event *pev,
                 group = pev->group;
                 pev->event = tev->event;
                 pev->group = tev->group;
-                show_perf_probe_event(pev);
+                show_perf_probe_event(pev, tev->point.module);
                 /* Trick here - restore current event/group */
                 pev->event = (char *)event;
                 pev->group = (char *)group;