diff options
| author | Masami Hiramatsu <[email protected]> | 2020-03-24 16:34:48 +0900 |
|---|---|---|
| committer | Steven Rostedt (VMware) <[email protected]> | 2020-03-27 16:39:02 -0400 |
| commit | 6a13a0d7b4d1171ef9b80ad69abc37e1daa941b3 (patch) | |
| tree | 8f3fc82143b6bc5779d4f60d5b2c6db5a1db9c91 | |
| parent | 8a815e6b8b88bfbbaba7c484af0833551a825321 (diff) | |
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/[email protected]
Link: http://lkml.kernel.org/r/158503528846.22706.5549974121212526020.stgit@devnote2
Cc: [email protected]
Fixes: 696ced4fb1d76 ("tracing/kprobes: expose maxactive for kretprobe in kprobe_events")
Reported-by: Taeung Song <[email protected]>
Signed-off-by: Masami Hiramatsu <[email protected]>
Signed-off-by: Steven Rostedt (VMware) <[email protected]>
| -rw-r--r-- | kernel/trace/trace_kprobe.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/kernel/trace/trace_kprobe.c b/kernel/trace/trace_kprobe.c index 362cca52f5de..d0568af4a0ef 100644 --- a/kernel/trace/trace_kprobe.c +++ b/kernel/trace/trace_kprobe.c @@ -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)); |