Commit 6a13a0d7 authored Mar 24, 2020 by Masami Hiramatsu Committed by Steven Rostedt (VMware) Mar 27, 2020

ftrace/kprobe: Show the maxactive number on kprobe_events

Show maxactive parameter on kprobe_events.
This allows user to save the current configuration and
restore it without losing maxactive parameter.

Link: http://lkml.kernel.org/r/4762764a-6df7-bc93-ed60-e336146dce1f@gmail.com
Link: http://lkml.kernel.org/r/158503528846.22706.5549974121212526020.stgit@devnote2



Cc: stable@vger.kernel.org
Fixes: 696ced4f ("tracing/kprobes: expose maxactive for kretprobe in kprobe_events")
Reported-by: Taeung Song <treeze.taeung@gmail.com>
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>

parent 8a815e6b

kernel/trace/trace_kprobe.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -1078,6 +1078,8 @@ static int trace_kprobe_show(struct seq_file m, struct dyn_event ev)
		int i;

		seq_putc(m, trace_kprobe_is_return(tk) ? 'r' : 'p');
		if (trace_kprobe_is_return(tk) && tk->rp.maxactive)
		seq_printf(m, "%d", tk->rp.maxactive);
		seq_printf(m, ":%s/%s", trace_probe_group_name(&tk->tp),
		trace_probe_name(&tk->tp));

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