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Subject[PATCH 1/6] arc,perf: Use common PMU interrupt disabled code

Transition to using the new generic PERF_PMU_CAP_NO_INTERRUPT method for
failing a sampling event when no PMU interrupt is available.

Signed-off-by: Vince Weaver <vincent.weaver@maine.edu>

diff --git a/arch/arc/kernel/perf_event.c b/arch/arc/kernel/perf_event.c
index 63177e4..b9a5685 100644
--- a/arch/arc/kernel/perf_event.c
+++ b/arch/arc/kernel/perf_event.c
@@ -99,10 +99,6 @@ static int arc_pmu_event_init(struct perf_event *event)
struct hw_perf_event *hwc = &event->hw;
int ret;

- /* ARC 700 PMU does not support sampling events */
- if (is_sampling_event(event))
- return -ENOENT;
-
switch (event->attr.type) {
case PERF_TYPE_HARDWARE:
if (event->attr.config >= PERF_COUNT_HW_MAX)
@@ -298,6 +294,9 @@ static int arc_pmu_device_probe(struct platform_device *pdev)
.read = arc_pmu_read,
};

+ /* ARC 700 PMU does not support sampling events */
+ arc_pmu->pmu.capabilities |= PERF_PMU_CAP_NO_INTERRUPT;
+
ret = perf_pmu_register(&arc_pmu->pmu, pdev->name, PERF_TYPE_RAW);

return ret;

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