linux-kernel - [PATCH -next] perf: arm_pmu: use DEVICE_ATTR

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Message-ID: <20210528014130.7708-1-yuehaibing@huawei.com>
Date:   Fri, 28 May 2021 09:41:30 +0800
From:   YueHaibing <yuehaibing@...wei.com>
To:     <will@...nel.org>, <mark.rutland@....com>,
        <julien.thierry.kdev@...il.com>
CC:     <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, YueHaibing <yuehaibing@...wei.com>
Subject: [PATCH -next] perf: arm_pmu: use DEVICE_ATTR_RO macro

Use DEVICE_ATTR_RO helper instead of plain DEVICE_ATTR,
which makes the code a bit shorter and easier to read.

Signed-off-by: YueHaibing <yuehaibing@...wei.com>
---
 drivers/perf/arm_pmu.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/perf/arm_pmu.c b/drivers/perf/arm_pmu.c
index e57b348c1628..a64e254a731b 100644
--- a/drivers/perf/arm_pmu.c
+++ b/drivers/perf/arm_pmu.c
@@ -563,14 +563,14 @@ static int armpmu_filter_match(struct perf_event *event)
 	return ret;
 }
 
-static ssize_t armpmu_cpumask_show(struct device *dev,
-				   struct device_attribute *attr, char *buf)
+static ssize_t cpus_show(struct device *dev,
+			 struct device_attribute *attr, char *buf)
 {
 	struct arm_pmu *armpmu = to_arm_pmu(dev_get_drvdata(dev));
 	return cpumap_print_to_pagebuf(true, buf, &armpmu->supported_cpus);
 }
 
-static DEVICE_ATTR(cpus, S_IRUGO, armpmu_cpumask_show, NULL);
+static DEVICE_ATTR_RO(cpus);
 
 static struct attribute *armpmu_common_attrs[] = {
 	&dev_attr_cpus.attr,
-- 
2.17.1