diff options
Diffstat (limited to 'tools/perf/arch/x86/util/intel-pt.c')
| -rw-r--r-- | tools/perf/arch/x86/util/intel-pt.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/tools/perf/arch/x86/util/intel-pt.c b/tools/perf/arch/x86/util/intel-pt.c index 218a4e694618..a8e633aa278a 100644 --- a/tools/perf/arch/x86/util/intel-pt.c +++ b/tools/perf/arch/x86/util/intel-pt.c @@ -548,6 +548,26 @@ static int intel_pt_validate_config(struct perf_pmu *intel_pt_pmu, evsel->core.attr.config); } +/* + * Currently, there is not enough information to disambiguate different PEBS + * events, so only allow one. + */ +static bool intel_pt_too_many_aux_output(struct evlist *evlist) +{ + struct evsel *evsel; + int aux_output_cnt = 0; + + evlist__for_each_entry(evlist, evsel) + aux_output_cnt += !!evsel->core.attr.aux_output; + + if (aux_output_cnt > 1) { + pr_err(INTEL_PT_PMU_NAME " supports at most one event with aux-output\n"); + return true; + } + + return false; +} + static int intel_pt_recording_options(struct auxtrace_record *itr, struct evlist *evlist, struct record_opts *opts) @@ -588,6 +608,9 @@ static int intel_pt_recording_options(struct auxtrace_record *itr, return -EINVAL; } + if (intel_pt_too_many_aux_output(evlist)) + return -EINVAL; + if (!opts->full_auxtrace) return 0; |