Commit ab26d9c8 authored Jan 28, 2026 by Sebastian Andrzej Siewior Committed by Will Deacon Jan 28, 2026

perf/cxlpmu: Replace IRQF_ONESHOT with IRQF_NO_THREAD



Passing IRQF_ONESHOT ensures that the interrupt source is masked until
the secondary (threaded) handler is done. If only a primary handler is
used then the flag makes no sense because the interrupt can not fire
(again) while its handler is running.
The flag also disallows force-threading of the primary handler and the
irq-core will warn about this.

The intention here was probably not allowing forced-threading.

Replace IRQF_ONESHOT with IRQF_NO_THREAD.

Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Will Deacon <will@kernel.org>

parent 79448fa1

drivers/perf/cxl_pmu.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -877,7 +877,7 @@ static int cxl_pmu_probe(struct device *dev)
		if (!irq_name)
		return -ENOMEM;

		rc = devm_request_irq(dev, irq, cxl_pmu_irq, IRQF_SHARED \| IRQF_ONESHOT,
		rc = devm_request_irq(dev, irq, cxl_pmu_irq, IRQF_SHARED \| IRQF_NO_THREAD,
		irq_name, info);
		if (rc)
		return rc;