tracing/kprobes: 'nmissed' not showed correctly for kretprobe

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The 'nmissed' column of the 'kprobe_profile' file for kretprobe is
not showed correctly, kretprobe can be skipped by two reasons,
shortage of kretprobe_instance which is counted by tk->rp.nmissed,
and kprobe itself is missed by some reason, so to show the sum.

Link: https://lkml.kernel.org/r/20220107150242.5019-1-xyz.sun.ok@gmail.com

Cc: stable@vger.kernel.org
Fixes: 4a846b443b ("tracing/kprobes: Cleanup kprobe tracer code")
Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Xiangyang Zhang <xyz.sun.ok@gmail.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>

...

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Xiangyang Zhang 2022-01-07 23:02:42 +08:00 • committed by Steven Rostedt

parent 77360f9bbc

commit dfea08a211

1 changed files with 4 additions and 1 deletions

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kernel/trace/trace_kprobe.c

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