diff options
Diffstat (limited to 'tools/perf/util/pfm.c')
| -rw-r--r-- | tools/perf/util/pfm.c | 26 |
1 files changed, 19 insertions, 7 deletions
diff --git a/tools/perf/util/pfm.c b/tools/perf/util/pfm.c index 862e4a689868..d9043f4afbe7 100644 --- a/tools/perf/util/pfm.c +++ b/tools/perf/util/pfm.c @@ -15,6 +15,7 @@ #include "util/strbuf.h" #include "util/thread_map.h" +#include <errno.h> #include <string.h> #include <linux/kernel.h> #include <perfmon/pfmlib_perf_event.h> @@ -47,10 +48,6 @@ int parse_libpfm_events_option(const struct option *opt, const char *str, p_orig = p = strdup(str); if (!p) return -1; - /* - * force loading of the PMU list - */ - perf_pmus__scan(NULL); for (q = p; strsep(&p, ",{}"); q = p) { sep = p ? str + (p - p_orig - 1) : ""; @@ -145,7 +142,20 @@ static bool is_libpfm_event_supported(const char *name, struct perf_cpu_map *cpu evsel->is_libpfm_event = true; - if (evsel__open(evsel, cpus, threads) < 0) + ret = evsel__open(evsel, cpus, threads); + if (ret == -EACCES) { + /* + * This happens if the paranoid value + * /proc/sys/kernel/perf_event_paranoid is set to 2 + * Re-run with exclude_kernel set; we don't do that + * by default as some ARM machines do not support it. + * + */ + evsel->core.attr.exclude_kernel = 1; + ret = evsel__open(evsel, cpus, threads); + + } + if (ret < 0) result = false; evsel__close(evsel); @@ -220,7 +230,8 @@ print_libpfm_event(const struct print_callbacks *print_cb, void *print_state, } if (is_libpfm_event_supported(name, cpus, threads)) { - print_cb->print_event(print_state, pinfo->name, topic, + print_cb->print_event(print_state, topic, pinfo->name, + /*pmu_type=*/PERF_TYPE_RAW, name, info->equiv, /*scale_unit=*/NULL, /*deprecated=*/NULL, "PFM event", @@ -254,8 +265,9 @@ print_libpfm_event(const struct print_callbacks *print_cb, void *print_state, continue; print_cb->print_event(print_state, - pinfo->name, topic, + pinfo->name, + /*pmu_type=*/PERF_TYPE_RAW, name, /*alias=*/NULL, /*scale_unit=*/NULL, /*deprecated=*/NULL, "PFM event", |