Em Tue, Mar 14, 2017 at 09:19:47PM +0800, Kefeng Wang escreveu:
> Hi all, any comments, thanks.
For 'perf probe' make sure Masami is in the CC list, adding him, Masami?
- Arnaldo
> On 2017/3/7 15:33, Kefeng Wang wrote:
> > + Arnaldo Carvalho de Melo <a...@kernel.org>
> >
> > On 2017/3/6 17:34, Kefeng Wang wrote:
> >> On old perf, when using perf probe -d to delete an inexistent event,
> >> it return errno, eg,
> >>
> >> -bash-4.3# perf probe -d xxx || echo $?
> >> Info: Event "*:xxx" does not exist.
> >> Error: Failed to delete events.
> >> 255
> >>
> >> But now perf_del_probe_events() will always set ret = 0, different
> >> from previous del_perf_probe_events(). After this, it return errno
> >> again, eg,
> >>
> >> -bash-4.3# ./perf probe -d xxx || echo $?
> >> Error: Failed to delete events.
> >> 254
> >>
> >> And it is more appropriate to return -ENOENT instead of -EPERM.
> >>
> >> Signed-off-by: Kefeng Wang <wangkefeng.w...@huawei.com>
> >> ---
> >> tools/perf/builtin-probe.c | 3 ++-
> >> 1 file changed, 2 insertions(+), 1 deletion(-)
> >>
> >> diff --git a/tools/perf/builtin-probe.c b/tools/perf/builtin-probe.c
> >> index 1fcebc3..c46b41c 100644
> >> --- a/tools/perf/builtin-probe.c
> >> +++ b/tools/perf/builtin-probe.c
> >> @@ -444,7 +444,8 @@ static int perf_del_probe_events(struct strfilter
> >> *filter)
> >> if (ret == -ENOENT && ret2 == -ENOENT)
> >> pr_debug("\"%s\" does not hit any event.\n", str);
> >> /* Note that this is silently ignored */
> >> - ret = 0;
> >> + else
> >> + ret = 0;
> >>
> >> error:
> >> if (kfd >= 0)
> >>
> >
> >
> > .
> >
