From: Jin Yao <yao....@linux.intel.com> The functions perf_pmu__is_hybrid and perf_pmu__find_hybrid_pmu can be used to identify the hybrid platform and return the found hybrid cpu pmu. All the detected hybrid pmus have been saved in 'perf_pmu__hybrid_pmus' list. So we just need to search this list for a pmu name.
perf_pmu__hybrid_type_to_pmu converts the user specified string to hybrid pmu name. This is used to support the '--cputype' option in next patches. perf_pmu__hybrid_exist checks if hybrid pmus exist. Reviewed-by: Andi Kleen <a...@linux.intel.com> Signed-off-by: Jin Yao <yao....@linux.intel.com> --- tools/perf/util/pmu.c | 40 ++++++++++++++++++++++++++++++++++++++++ tools/perf/util/pmu.h | 11 +++++++++++ 2 files changed, 51 insertions(+) diff --git a/tools/perf/util/pmu.c b/tools/perf/util/pmu.c index e97b121..04447f5 100644 --- a/tools/perf/util/pmu.c +++ b/tools/perf/util/pmu.c @@ -1842,3 +1842,43 @@ int perf_pmu__caps_parse(struct perf_pmu *pmu) return nr_caps; } + +struct perf_pmu *perf_pmu__find_hybrid_pmu(const char *name) +{ + struct perf_pmu *pmu; + + if (!name) + return NULL; + + perf_pmu__for_each_hybrid_pmus(pmu) { + if (!strcmp(name, pmu->name)) + return pmu; + } + + return NULL; +} + +bool perf_pmu__is_hybrid(const char *name) +{ + return perf_pmu__find_hybrid_pmu(name) != NULL; +} + +char *perf_pmu__hybrid_type_to_pmu(const char *type) +{ + char *pmu_name = NULL; + + if (asprintf(&pmu_name, "cpu_%s", type) < 0) + return NULL; + + if (perf_pmu__is_hybrid(pmu_name)) + return pmu_name; + + /* + * The pmus may be not scanned yet, so check the sysfs. + */ + if (pmu_is_hybrid(pmu_name)) + return pmu_name; + + free(pmu_name); + return NULL;; +} diff --git a/tools/perf/util/pmu.h b/tools/perf/util/pmu.h index 99bdb5d..bb74595 100644 --- a/tools/perf/util/pmu.h +++ b/tools/perf/util/pmu.h @@ -131,4 +131,15 @@ int perf_pmu__caps_parse(struct perf_pmu *pmu); #define perf_pmu__for_each_hybrid_pmus(pmu) \ list_for_each_entry(pmu, &perf_pmu__hybrid_pmus, hybrid_list) +struct perf_pmu *perf_pmu__find_hybrid_pmu(const char *name); + +bool perf_pmu__is_hybrid(const char *name); + +char *perf_pmu__hybrid_type_to_pmu(const char *type); + +static inline bool perf_pmu__hybrid_exist(void) +{ + return !list_empty(&perf_pmu__hybrid_pmus); +} + #endif /* __PMU_H */ -- 2.7.4