Em Mon, Jul 03, 2017 at 04:50:16PM +0200, Jiri Olsa escreveu: > The kernel fails to add a non sampling event event > with having precise_ip set. > > Make sure the precise_ip is 0 when using -n option > to create non sampling event in record.
Ok, but how could that happen? What was the scenario? Which command? Can you provide a command line that causes the problem? I ask this because perhaps we should tell the user that what its being asked on a command line doesn't make sense instead of dropping the precise_ip as in your patch. - Arnaldo > Link: http://lkml.kernel.org/n/[email protected] > Signed-off-by: Jiri Olsa <[email protected]> > --- > tools/perf/util/evsel.c | 4 +++- > 1 file changed, 3 insertions(+), 1 deletion(-) > > diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c > index 6f4882f8d61f..915fe3cd6544 100644 > --- a/tools/perf/util/evsel.c > +++ b/tools/perf/util/evsel.c > @@ -890,8 +890,10 @@ void perf_evsel__config(struct perf_evsel *evsel, struct > record_opts *opts, > attr->sample_period = 0; > } > > - if (opts->no_samples) > + if (opts->no_samples) { > attr->sample_freq = 0; > + attr->precise_ip = 0; > + } > > if (opts->inherit_stat) > attr->inherit_stat = 1; > -- > 2.9.4
