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authorNamhyung Kim <namhyung@kernel.org>2023-06-09 01:23:58 +0200
committerArnaldo Carvalho de Melo <acme@redhat.com>2023-06-12 20:57:53 +0200
commitd1f1cecc92ae0dba44eac3ce10baf4edb4553e41 (patch)
tree2fc4de4085430b624c6e474a86a369769ce562d6 /tools/perf/util/pfm.c
parentperf parse: Allow config terms with breakpoints (diff)
downloadlinux-d1f1cecc92ae0dba44eac3ce10baf4edb4553e41.tar.xz
linux-d1f1cecc92ae0dba44eac3ce10baf4edb4553e41.zip
perf list: Check if libpfm4 event is supported
Some of its event info cannot be used directly due to missing default attributes. Let's check if the event is supported before printing like we do for hw and cache events. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Acked-by: Ian Rogers <irogers>@google.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: https://lore.kernel.org/r/20230608232400.3056312-2-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/pfm.c')
-rw-r--r--tools/perf/util/pfm.c58
1 files changed, 50 insertions, 8 deletions
diff --git a/tools/perf/util/pfm.c b/tools/perf/util/pfm.c
index 076aecc22c16..4c1024c343dd 100644
--- a/tools/perf/util/pfm.c
+++ b/tools/perf/util/pfm.c
@@ -13,6 +13,8 @@
#include "util/pmus.h"
#include "util/pfm.h"
#include "util/strbuf.h"
+#include "util/cpumap.h"
+#include "util/thread_map.h"
#include <string.h>
#include <linux/kernel.h>
@@ -123,6 +125,36 @@ error:
return -1;
}
+static bool is_libpfm_event_supported(const char *name, struct perf_cpu_map *cpus,
+ struct perf_thread_map *threads)
+{
+ struct perf_pmu *pmu;
+ struct evsel *evsel;
+ struct perf_event_attr attr = {};
+ bool result = true;
+ int ret;
+
+ ret = pfm_get_perf_event_encoding(name, PFM_PLM0|PFM_PLM3,
+ &attr, NULL, NULL);
+ if (ret != PFM_SUCCESS)
+ return false;
+
+ pmu = perf_pmus__find_by_type((unsigned int)attr.type);
+ evsel = parse_events__add_event(0, &attr, name, /*metric_id=*/NULL, pmu);
+ if (evsel == NULL)
+ return false;
+
+ evsel->is_libpfm_event = true;
+
+ if (evsel__open(evsel, cpus, threads) < 0)
+ result = false;
+
+ evsel__close(evsel);
+ evsel__delete(evsel);
+
+ return result;
+}
+
static const char *srcs[PFM_ATTR_CTRL_MAX] = {
[PFM_ATTR_CTRL_UNKNOWN] = "???",
[PFM_ATTR_CTRL_PMU] = "PMU",
@@ -146,6 +178,8 @@ print_libpfm_event(const struct print_callbacks *print_cb, void *print_state,
{
int j, ret;
char topic[80], name[80];
+ struct perf_cpu_map *cpus = perf_cpu_map__empty_new(1);
+ struct perf_thread_map *threads = thread_map__new_by_tid(0);
strbuf_setlen(buf, 0);
snprintf(topic, sizeof(topic), "pfm %s", pinfo->name);
@@ -185,14 +219,15 @@ print_libpfm_event(const struct print_callbacks *print_cb, void *print_state,
ainfo.name, ainfo.desc);
}
}
- print_cb->print_event(print_state,
- pinfo->name,
- topic,
- name, info->equiv,
- /*scale_unit=*/NULL,
- /*deprecated=*/NULL, "PFM event",
- info->desc, /*long_desc=*/NULL,
- /*encoding_desc=*/buf->buf);
+
+ if (is_libpfm_event_supported(name, cpus, threads)) {
+ print_cb->print_event(print_state, pinfo->name, topic,
+ name, info->equiv,
+ /*scale_unit=*/NULL,
+ /*deprecated=*/NULL, "PFM event",
+ info->desc, /*long_desc=*/NULL,
+ /*encoding_desc=*/buf->buf);
+ }
pfm_for_each_event_attr(j, info) {
pfm_event_attr_info_t ainfo;
@@ -215,6 +250,10 @@ print_libpfm_event(const struct print_callbacks *print_cb, void *print_state,
print_attr_flags(buf, &ainfo);
snprintf(name, sizeof(name), "%s::%s:%s",
pinfo->name, info->name, ainfo.name);
+
+ if (!is_libpfm_event_supported(name, cpus, threads))
+ continue;
+
print_cb->print_event(print_state,
pinfo->name,
topic,
@@ -225,6 +264,9 @@ print_libpfm_event(const struct print_callbacks *print_cb, void *print_state,
/*encoding_desc=*/buf->buf);
}
}
+
+ perf_cpu_map__put(cpus);
+ perf_thread_map__put(threads);
}
void print_libpfm_events(const struct print_callbacks *print_cb, void *print_state)