Em Thu, Dec 07, 2017 at 04:19:45PM +0900, Masami Hiramatsu escreveu:
> This improve the error message so that user can know
> event-name error before writing new events to
> kprobe-events interface.
>
> E.g.
> ======
> #./perf probe -x /lib64/libc-2.25.so malloc_get_state*
> Internal error: "malloc_get_state@GLIBC_2" is wrong event name.
I'm changing this to:
Internal error: "malloc_get_state@GLIBC_2" is an invalid event name for the /sys/kernel/debug/tracing/kprobe_events interface.
Ok?
- Arnaldo
> Error: Failed to add events.
> ======
>
> Signed-off-by: Masami Hiramatsu <mhiramat@xxxxxxxxxx>
> ---
> tools/perf/util/probe-event.c | 8 ++++++++
> 1 file changed, 8 insertions(+)
>
> diff --git a/tools/perf/util/probe-event.c b/tools/perf/util/probe-event.c
> index b7aaf9b2294d..c0067950e56f 100644
> --- a/tools/perf/util/probe-event.c
> +++ b/tools/perf/util/probe-event.c
> @@ -2625,6 +2625,14 @@ static int get_new_event_name(char *buf, size_t len, const char *base,
>
> out:
> free(nbase);
> +
> + /* Final validation */
> + if (ret >= 0 && !is_c_func_name(buf)) {
> + pr_warning("Internal error: \"%s\" is wrong event name.\n",
> + buf);
> + ret = -EINVAL;
> + }
> +
> return ret;
> }
>
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