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-rw-r--r--arch/csky/kernel/perf_event.c50
1 files changed, 48 insertions, 2 deletions
diff --git a/arch/csky/kernel/perf_event.c b/arch/csky/kernel/perf_event.c
index 376c972f5f37..2282554840c6 100644
--- a/arch/csky/kernel/perf_event.c
+++ b/arch/csky/kernel/perf_event.c
@@ -949,7 +949,7 @@ static int csky_pmu_add(struct perf_event *event, int flags)
return 0;
}
-int __init init_hw_perf_events(void)
+int init_hw_perf_events(void)
{
csky_pmu.pmu = (struct pmu) {
.pmu_enable = csky_pmu_enable,
@@ -1028,4 +1028,50 @@ int __init init_hw_perf_events(void)
return perf_pmu_register(&csky_pmu.pmu, "cpu", PERF_TYPE_RAW);
}
-arch_initcall(init_hw_perf_events);
+
+int csky_pmu_device_probe(struct platform_device *pdev,
+ const struct of_device_id *of_table)
+{
+ int ret;
+
+ ret = init_hw_perf_events();
+ if (ret) {
+ pr_notice("[perf] failed to probe PMU!\n");
+ return ret;
+ }
+
+ return ret;
+}
+
+const static struct of_device_id csky_pmu_of_device_ids[] = {
+ {.compatible = "csky,csky-pmu"},
+ {},
+};
+
+static int csky_pmu_dev_probe(struct platform_device *pdev)
+{
+ return csky_pmu_device_probe(pdev, csky_pmu_of_device_ids);
+}
+
+static struct platform_driver csky_pmu_driver = {
+ .driver = {
+ .name = "csky-pmu",
+ .of_match_table = csky_pmu_of_device_ids,
+ },
+ .probe = csky_pmu_dev_probe,
+};
+
+static int __init csky_pmu_probe(void)
+{
+ int ret;
+
+ ret = platform_driver_register(&csky_pmu_driver);
+ if (ret)
+ pr_notice("[perf] PMU initialization failed\n");
+ else
+ pr_notice("[perf] PMU initialization done\n");
+
+ return ret;
+}
+
+device_initcall(csky_pmu_probe);