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Diffstat (limited to 'arch/blackfin/kernel/perf_event.c')
-rw-r--r--arch/blackfin/kernel/perf_event.c15
1 files changed, 7 insertions, 8 deletions
diff --git a/arch/blackfin/kernel/perf_event.c b/arch/blackfin/kernel/perf_event.c
index 974e55496db3..ea2032013cc2 100644
--- a/arch/blackfin/kernel/perf_event.c
+++ b/arch/blackfin/kernel/perf_event.c
@@ -389,14 +389,6 @@ static int bfin_pmu_event_init(struct perf_event *event)
if (attr->exclude_hv || attr->exclude_idle)
return -EPERM;
- /*
- * All of the on-chip counters are "limited", in that they have
- * no interrupts, and are therefore unable to do sampling without
- * further work and timer assistance.
- */
- if (hwc->sample_period)
- return -EINVAL;
-
ret = 0;
switch (attr->type) {
case PERF_TYPE_RAW:
@@ -490,6 +482,13 @@ static int __init bfin_pmu_init(void)
{
int ret;
+ /*
+ * All of the on-chip counters are "limited", in that they have
+ * no interrupts, and are therefore unable to do sampling without
+ * further work and timer assistance.
+ */
+ pmu.capabilities |= PERF_PMU_CAP_NO_INTERRUPT;
+
ret = perf_pmu_register(&pmu, "cpu", PERF_TYPE_RAW);
if (!ret)
perf_cpu_notifier(bfin_pmu_notifier);