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Date: Wed, 29 Mar 2017 14:22:02 +0900 From: Masami Hiramatsu <mhiramat@...nel.org> To: Steven Rostedt <rostedt@...dmis.org>, Ingo Molnar <mingo@...hat.com> Cc: Alban Crequy <alban.crequy@...il.com>, Alban Crequy <alban@...volk.io>, Alexei Starovoitov <ast@...nel.org>, Jonathan Corbet <corbet@....net>, Arnaldo Carvalho de Melo <acme@...hat.com>, Omar Sandoval <osandov@...com>, linux-doc@...r.kernel.org, netdev@...r.kernel.org, linux-kernel@...r.kernel.org, iago@...volk.io, michael@...volk.io, Dorau Lukasz <lukasz.dorau@...el.com>, systemtap@...rceware.org Subject: [RFC PATCH tip/master 1/3] trace: kprobes: Show sum of probe/retprobe nmissed count 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@...nel.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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