Messages in this thread Patch in this message | | | From | "Naveen N. Rao" <> | Subject | [PATCH 1/2] trace/kprobe: Fix count of missed kretprobes in kprobe_profile | Date | Mon, 14 Jun 2021 23:33:28 +0530 |
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For a kretprobe, the miss count includes the number of times the probe on function entry was missed, as well as the number of times we ran out of kretprobe_instance structures due to maxactive being too low.
Fixes: cd7e7bd5e44718 ("tracing: Add kprobes event profiling interface") Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> --- kernel/trace/trace_kprobe.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/kernel/trace/trace_kprobe.c b/kernel/trace/trace_kprobe.c index ea6178cb5e334d..0475e2a6d0825e 100644 --- a/kernel/trace/trace_kprobe.c +++ b/kernel/trace/trace_kprobe.c @@ -1192,7 +1192,8 @@ static int probes_profile_seq_show(struct seq_file *m, void *v) seq_printf(m, " %-44s %15lu %15lu\n", trace_probe_name(&tk->tp), trace_kprobe_nhit(tk), - tk->rp.kp.nmissed); + trace_kprobe_is_return(tk) ? tk->rp.kp.nmissed + tk->rp.nmissed + : tk->rp.kp.nmissed); return 0; } -- 2.31.1
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