tracing/kprobe: Add per-probe delete from event

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Allow user to delete a probe from event. This is done by head
match. For example, if we have 2 probes on an event

$ cat kprobe_events
p:kprobes/testprobe _do_fork r1=%ax r2=%dx
p:kprobes/testprobe idle_fork r1=%ax r2=%cx

Then you can remove one of them by passing the head of definition
which identify the probe.

$ echo "-:kprobes/testprobe idle_fork" >> kprobe_events

Link: http://lkml.kernel.org/r/156095688848.28024.15798690082378432435.stgit@devnote2

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

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This commit is contained in:

Masami Hiramatsu 2019-06-20 00:08:08 +09:00 • committed by Steven Rostedt (VMware)

parent 41af3cf587

commit eb5bf81330

3 changed files with 44 additions and 1 deletions

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25

kernel/trace/trace_kprobe.c

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18

kernel/trace/trace_probe.c

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2

kernel/trace/trace_probe.h

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