drivers/perf: arm_pmu_platform: do not warn about affinity on uniprocessor

If there is exactly one CPU present, there is no ambiguity: do not warn
that PMU setup would need to guess IRQ affinity.

Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Alexander Monakov <amonakov@ispras.ru>
Signed-off-by: Will Deacon <will.deacon@arm.com>

diff --git a/drivers/perf/arm_pmu_platform.c b/drivers/perf/arm_pmu_platform.c
index 7729eda5909df180ae686ee8206e35a75b9ca476..971ff336494a4ac6c4b0d533440d6fab076ebd9f 100644 (file)
--- a/drivers/perf/arm_pmu_platform.c
+++ b/drivers/perf/arm_pmu_platform.c
@@ -122,7 +122,7 @@ static int pmu_parse_irqs(struct arm_pmu *pmu)
                        return pmu_parse_percpu_irq(pmu, irq);
        }
 
-       if (!pmu_has_irq_affinity(pdev->dev.of_node)) {
+       if (nr_cpu_ids != 1 && !pmu_has_irq_affinity(pdev->dev.of_node)) {
                pr_warn("no interrupt-affinity property for %pOF, guessing.\n",
                        pdev->dev.of_node);
        }