diff options
Diffstat (limited to 'tools/perf/util/pmu.c')
| -rw-r--r-- | tools/perf/util/pmu.c | 27 |
1 files changed, 26 insertions, 1 deletions
diff --git a/tools/perf/util/pmu.c b/tools/perf/util/pmu.c index 64fa568a5426..7f984a7f16ca 100644 --- a/tools/perf/util/pmu.c +++ b/tools/perf/util/pmu.c @@ -928,6 +928,31 @@ err: return NULL; } +/* Creates the PMU when sysfs scanning fails. */ +struct perf_pmu *perf_pmu__create_placeholder_core_pmu(struct list_head *core_pmus) +{ + struct perf_pmu *pmu = zalloc(sizeof(*pmu)); + + if (!pmu) + return NULL; + + pmu->name = strdup("cpu"); + if (!pmu->name) { + free(pmu); + return NULL; + } + + pmu->is_core = true; + pmu->type = PERF_TYPE_RAW; + pmu->cpus = cpu_map__online(); + + INIT_LIST_HEAD(&pmu->format); + INIT_LIST_HEAD(&pmu->aliases); + INIT_LIST_HEAD(&pmu->caps); + list_add_tail(&pmu->list, core_pmus); + return pmu; +} + void perf_pmu__warn_invalid_formats(struct perf_pmu *pmu) { struct perf_pmu_format *format; @@ -1427,7 +1452,7 @@ bool perf_pmu__supports_legacy_cache(const struct perf_pmu *pmu) bool perf_pmu__auto_merge_stats(const struct perf_pmu *pmu) { - return pmu->is_core && perf_pmus__num_core_pmus() == 1; + return !pmu->is_core || perf_pmus__num_core_pmus() == 1; } bool perf_pmu__have_event(const struct perf_pmu *pmu, const char *name) |