tracing/probe: Reject exactly same probe event

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Reject exactly same probe events as existing probes.

Multiprobe allows user to define multiple probes on same
event. If user appends a probe which exactly same definition
(same probe address and same arguments) on existing event,
the event will record same probe information twice.
That can be confusing users, so reject it.

Link: http://lkml.kernel.org/r/156879694602.31056.5533024778165036763.stgit@devnote2

Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>

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Masami Hiramatsu 2019-09-18 17:55:46 +09:00 • committed by Steven Rostedt (VMware)

parent 44d00dc7ce

commit fe60b0ce8e

3 changed files with 90 additions and 17 deletions

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50

kernel/trace/trace_kprobe.c

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3

kernel/trace/trace_probe.h

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50

kernel/trace/trace_uprobe.c

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