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Groups > linux.kernel > #1611582
| From | Masami Hiramatsu <mhiramat@kernel.org> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [RFC PATCH tip/master 1/3] trace: kprobes: Show sum of probe/retprobe nmissed count |
| Date | 2017-03-29 07:30 +0200 |
| Message-ID | <tqelb-2ha-1@gated-at.bofh.it> (permalink) |
| References | <tqelb-2ha-3@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
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> --- 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 013f4e7..bbdc3de 100644 --- a/kernel/trace/trace_kprobe.c +++ b/kernel/trace/trace_kprobe.c @@ -896,7 +896,7 @@ 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; }
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[RFC PATCH tip/master 1/3] trace: kprobes: Show sum of probe/retprobe nmissed count Masami Hiramatsu <mhiramat@kernel.org> - 2017-03-29 07:30 +0200 Re: [RFC PATCH tip/master 1/3] trace: kprobes: Show sum of probe/retprobe nmissed count Alban Crequy <alban@kinvolk.io> - 2017-03-31 11:50 +0200
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