Messages in this thread Patch in this message | | | From | Masami Hiramatsu <> | Subject | [RFC PATCH -tip 1/2] trace: kprobes: Show sum of probe/retprobe nmissed count | Date | Tue, 22 Aug 2017 00:41:11 +0900 |
| |
Show sum of probe and retprobe nmissed count in kprobe_profile, since retprobe can be missed even if the kprobe itself succeeeded. This explains user why their return probe didn't hit sometimes.
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Tested-by: Alban Crequy <alban@kinvolk.io> --- kernel/trace/trace_kprobe.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/kernel/trace/trace_kprobe.c b/kernel/trace/trace_kprobe.c index c9b5aa10fbf9..fe1bd541216c 100644 --- a/kernel/trace/trace_kprobe.c +++ b/kernel/trace/trace_kprobe.c @@ -928,7 +928,7 @@ static int probes_profile_seq_show(struct seq_file *m, void *v) seq_printf(m, " %-44s %15lu %15lu\n", trace_event_name(&tk->tp.call), trace_kprobe_nhit(tk), - tk->rp.kp.nmissed); + tk->rp.kp.nmissed + tk->rp.nmissed); return 0; }
| |