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perf: arm_spe: 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@huawei.com>
Link: https://lore.kernel.org/r/20210528061738.23392-1-yuehaibing@huawei.com
Signed-off-by: Will Deacon <will@kernel.org>
This commit is contained in:
YueHaibing 2021-05-28 14:17:38 +08:00 committed by Will Deacon
parent 21ad02e6b4
commit f9e36b388a
1 changed files with 3 additions and 4 deletions
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7
drivers/perf/arm_spe_pmu.c
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@ -231,15 +231,14 @@ static const struct attribute_group arm_spe_pmu_format_group = {
.attrs = arm_spe_pmu_formats_attr,
};
static ssize_t arm_spe_pmu_get_attr_cpumask(struct device *dev,
struct device_attribute *attr,
char *buf)
static ssize_t cpumask_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct arm_spe_pmu *spe_pmu = dev_get_drvdata(dev);
return cpumap_print_to_pagebuf(true, buf, &spe_pmu->supported_cpus);
}
static DEVICE_ATTR(cpumask, S_IRUGO, arm_spe_pmu_get_attr_cpumask, NULL);
static DEVICE_ATTR_RO(cpumask);
static struct attribute *arm_spe_pmu_attrs[] = {
&dev_attr_cpumask.attr,