linux-kernel - [PATCH v2 5/5] perf/arm-dsu: refactor cpu id retrieval via new API of_cpu_phandle_to

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Message-ID: <20250708151502.561-6-alireza.sanaee@huawei.com>
Date: Tue, 8 Jul 2025 16:15:02 +0100
From: Alireza Sanaee <alireza.sanaee@...wei.com>
To: <krzk@...nel.org>, <robh@...nel.org>
CC: <coresight@...ts.linaro.org>, <devicetree@...r.kernel.org>,
	<dianders@...omium.org>, <james.clark@...aro.org>,
	<jonathan.cameron@...wei.com>, <linux-arm-kernel@...ts.infradead.org>,
	<linux-kernel@...r.kernel.org>, <linux-perf-users@...r.kernel.org>,
	<linuxarm@...wei.com>, <mark.rutland@....com>, <mike.leach@...aro.org>,
	<ruanjinjie@...wei.com>, <saravanak@...gle.com>,
	<shameerali.kolothum.thodi@...wei.com>
Subject: [PATCH v2 5/5] perf/arm-dsu: refactor cpu id retrieval via new API of_cpu_phandle_to_id

Update arm-dsu to use the new API, where both "cpus" and "cpu"
properties are supported.

Signed-off-by: Alireza Sanaee <alireza.sanaee@...wei.com>
---
 drivers/perf/arm_dsu_pmu.c | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/drivers/perf/arm_dsu_pmu.c b/drivers/perf/arm_dsu_pmu.c
index cb4fb59fe04b..1014b92c0fd2 100644
--- a/drivers/perf/arm_dsu_pmu.c
+++ b/drivers/perf/arm_dsu_pmu.c
@@ -591,17 +591,13 @@ static struct dsu_pmu *dsu_pmu_alloc(struct platform_device *pdev)
 static int dsu_pmu_dt_get_cpus(struct device *dev, cpumask_t *mask)
 {
 	int i = 0, n, cpu;
-	struct device_node *cpu_node;
 
 	n = of_count_phandle_with_args(dev->of_node, "cpus", NULL);
 	if (n <= 0)
 		return -ENODEV;
+
 	for (; i < n; i++) {
-		cpu_node = of_parse_phandle(dev->of_node, "cpus", i);
-		if (!cpu_node)
-			break;
-		cpu = of_cpu_node_to_id(cpu_node);
-		of_node_put(cpu_node);
+		cpu = of_cpu_phandle_to_id(dev->of_node, NULL, i);
 		/*
 		 * We have to ignore the failures here and continue scanning
 		 * the list to handle cases where the nr_cpus could be capped
-- 
2.43.0