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| author | Adrian Hunter <adrian.hunter@intel.com> | 2019-08-06 11:46:04 +0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2019-08-14 16:59:59 +0300 |
| commit | 9e64cefe4335b0f2799956d3f3cca8bb652d950f (patch) | |
| tree | 4fa590da8728f10c23d7345463e698efb16eef8f /tools/perf/arch | |
| parent | 181ebb5e23a5e480f6d6aa2816a9c4aaa65afa59 (diff) | |
| download | linux-9e64cefe4335b0f2799956d3f3cca8bb652d950f.tar.xz | |
perf intel-pt: Process options for PEBS event synthesis
Process synth_opts.other_events and attr.aux_output to set up for
synthesizing PEBs via Intel PT events.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20190806084606.4021-6-alexander.shishkin@linux.intel.com
Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
[ Fixed up libbperf clashes, i.e. some places using perf_evsel (now in libperf)
need to use instead 'evsel' (a tools/perf only abstraction) ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/arch')
| -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; |