perf pmu: Add pmu_add_sys_aliases()
Add pmu_add_sys_aliases() to add system PMU events aliases.
For adding system PMU events, iterate through all the events for all SoC
event tables in pmu_sys_event_tables[].
Matches must satisfy both:
- PMU identifier matches event "compat" value
- event "Unit" member must match, same as uncore event aliases matched by
CPUID
Signed-off-by: John Garry <john.garry@huawei.com>
Acked-by: Kajol Jain <kjain@linux.ibm.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Joakim Zhang <qiangqing.zhang@nxp.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Kim Phillips <kim.phillips@amd.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Shaokun Zhang <zhangshaokun@hisilicon.com>
Cc: Will Deacon <will@kernel.org>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linuxarm@huawei.com
Link: http://lore.kernel.org/lkml/1607080216-36968-5-git-send-email-john.garry@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
diff --git a/tools/perf/util/pmu.c b/tools/perf/util/pmu.c
index cbeda45..44ef283 100644
--- a/tools/perf/util/pmu.c
+++ b/tools/perf/util/pmu.c
@@ -812,6 +812,83 @@ static void pmu_add_cpu_aliases(struct list_head *head, struct perf_pmu *pmu)
pmu_add_cpu_aliases_map(head, pmu, map);
}
+void pmu_for_each_sys_event(pmu_sys_event_iter_fn fn, void *data)
+{
+ int i = 0;
+
+ while (1) {
+ struct pmu_sys_events *event_table;
+ int j = 0;
+
+ event_table = &pmu_sys_event_tables[i++];
+
+ if (!event_table->table)
+ break;
+
+ while (1) {
+ struct pmu_event *pe = &event_table->table[j++];
+ int ret;
+
+ if (!pe->name && !pe->metric_group && !pe->metric_name)
+ break;
+
+ ret = fn(pe, data);
+ if (ret)
+ break;
+ }
+ }
+}
+
+struct pmu_sys_event_iter_data {
+ struct list_head *head;
+ struct perf_pmu *pmu;
+};
+
+static int pmu_add_sys_aliases_iter_fn(struct pmu_event *pe, void *data)
+{
+ struct pmu_sys_event_iter_data *idata = data;
+ struct perf_pmu *pmu = idata->pmu;
+
+ if (!pe->name) {
+ if (pe->metric_group || pe->metric_name)
+ return 0;
+ return -EINVAL;
+ }
+
+ if (!pe->compat || !pe->pmu)
+ return 0;
+
+ if (!strcmp(pmu->id, pe->compat) &&
+ pmu_uncore_alias_match(pe->pmu, pmu->name)) {
+ __perf_pmu__new_alias(idata->head, NULL,
+ (char *)pe->name,
+ (char *)pe->desc,
+ (char *)pe->event,
+ (char *)pe->long_desc,
+ (char *)pe->topic,
+ (char *)pe->unit,
+ (char *)pe->perpkg,
+ (char *)pe->metric_expr,
+ (char *)pe->metric_name,
+ (char *)pe->deprecated);
+ }
+
+ return 0;
+}
+
+static void pmu_add_sys_aliases(struct list_head *head, struct perf_pmu *pmu)
+{
+ struct pmu_sys_event_iter_data idata = {
+ .head = head,
+ .pmu = pmu,
+ };
+
+ if (!pmu->id)
+ return;
+
+ pmu_for_each_sys_event(pmu_add_sys_aliases_iter_fn, &idata);
+}
+
struct perf_event_attr * __weak
perf_pmu__get_default_config(struct perf_pmu *pmu __maybe_unused)
{
@@ -867,6 +944,7 @@ static struct perf_pmu *pmu_lookup(const char *name)
pmu->id = pmu_id(name);
pmu->max_precise = pmu_max_precise(name);
pmu_add_cpu_aliases(&aliases, pmu);
+ pmu_add_sys_aliases(&aliases, pmu);
INIT_LIST_HEAD(&pmu->format);
INIT_LIST_HEAD(&pmu->aliases);