diff options
| -rw-r--r-- | tools/perf/util/parse-events.c | 3 | ||||
| -rw-r--r-- | tools/perf/util/pmu.c | 33 | ||||
| -rw-r--r-- | tools/perf/util/pmu.h | 3 |
3 files changed, 39 insertions, 0 deletions
diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c index 42c84adeb2fb..c0c0fab22cb8 100644 --- a/tools/perf/util/parse-events.c +++ b/tools/perf/util/parse-events.c @@ -356,6 +356,9 @@ __add_event(struct list_head *list, int *idx, struct perf_cpu_map *cpus = pmu ? perf_cpu_map__get(pmu->cpus) : cpu_list ? perf_cpu_map__new(cpu_list) : NULL; + if (pmu && attr->type == PERF_TYPE_RAW) + perf_pmu__warn_invalid_config(pmu, attr->config, name); + if (init_attr) event_attr_init(attr); diff --git a/tools/perf/util/pmu.c b/tools/perf/util/pmu.c index 44ef28302fc7..46fd0f998484 100644 --- a/tools/perf/util/pmu.c +++ b/tools/perf/util/pmu.c @@ -1812,3 +1812,36 @@ int perf_pmu__caps_parse(struct perf_pmu *pmu) return nr_caps; } + +void perf_pmu__warn_invalid_config(struct perf_pmu *pmu, __u64 config, + char *name) +{ + struct perf_pmu_format *format; + __u64 masks = 0, bits; + char buf[100]; + unsigned int i; + + list_for_each_entry(format, &pmu->format, list) { + if (format->value != PERF_PMU_FORMAT_VALUE_CONFIG) + continue; + + for_each_set_bit(i, format->bits, PERF_PMU_FORMAT_BITS) + masks |= 1ULL << i; + } + + /* + * Kernel doesn't export any valid format bits. + */ + if (masks == 0) + return; + + bits = config & ~masks; + if (bits == 0) + return; + + bitmap_scnprintf((unsigned long *)&bits, sizeof(bits) * 8, buf, sizeof(buf)); + + pr_warning("WARNING: event '%s' not valid (bits %s of config " + "'%llx' not supported by kernel)!\n", + name ?: "N/A", buf, config); +} diff --git a/tools/perf/util/pmu.h b/tools/perf/util/pmu.h index 8164388478c6..160b0f561771 100644 --- a/tools/perf/util/pmu.h +++ b/tools/perf/util/pmu.h @@ -123,4 +123,7 @@ int perf_pmu__convert_scale(const char *scale, char **end, double *sval); int perf_pmu__caps_parse(struct perf_pmu *pmu); +void perf_pmu__warn_invalid_config(struct perf_pmu *pmu, __u64 config, + char *name); + #endif /* __PMU_H */ |