From: mark.rutland@arm.com (Mark Rutland)
To: linux-arm-kernel@lists.infradead.org
Subject: [RFCv4 5/7] drivers/perf: arm_pmu: expose a cpumask in sysfs
Date: Fri, 9 Sep 2016 12:04:50 +0100 [thread overview]
Message-ID: <20160909110450.GB10562@leverpostej> (raw)
In-Reply-To: <20160909102443.GE20192@arm.com>
On Fri, Sep 09, 2016 at 11:24:43AM +0100, Will Deacon wrote:
> On Thu, Sep 08, 2016 at 11:21:50AM +0100, Mark Rutland wrote:
> > +static ssize_t armpmu_cpumask_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 struct device_attribute armpmu_cpumask_attr =
> > + __ATTR(cpus, S_IRUGO, armpmu_cpumask_show, NULL);
>
> You can use the DEVICE_ATTR macro for this.
Ok. I've made use of this locally.
I'll send an updated version of the patches shortly, once I've given
this a spin on HW
Mark.
next prev parent reply other threads:[~2016-09-09 11:04 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-09-08 10:21 [RFCv4 0/7] arm_pmu/perf tools: play nicely with CPU PMU cpumasks Mark Rutland
2016-09-08 10:21 ` [RFCv4 1/7] drivers/perf: arm_pmu: add common attr group fields Mark Rutland
2016-09-09 10:25 ` Will Deacon
2016-09-09 11:05 ` Mark Rutland
2016-09-08 10:21 ` [RFCv4 2/7] arm64: perf: move to common attr_group fields Mark Rutland
2016-09-08 10:21 ` [RFCv4 3/7] arm: " Mark Rutland
2016-09-08 10:21 ` [RFCv4 4/7] drivers/perf: arm_pmu: only use common attr_groups Mark Rutland
2016-09-08 10:21 ` [RFCv4 5/7] drivers/perf: arm_pmu: expose a cpumask in sysfs Mark Rutland
2016-09-09 10:24 ` Will Deacon
2016-09-09 11:04 ` Mark Rutland [this message]
2016-09-08 10:21 ` [RFCv4 6/7] perf: util: only open events on CPUs an evsel permits Mark Rutland
2016-09-08 10:21 ` [RFCv4 7/7] perf: util: support alternative sysfs cpumask Mark Rutland
2016-09-08 10:38 ` [RFCv4 0/7] arm_pmu/perf tools: play nicely with CPU PMU cpumasks Will Deacon
2016-09-08 11:29 ` Mark Rutland
2016-09-08 16:25 ` Arnaldo Carvalho de Melo
2016-09-08 18:16 ` Peter Zijlstra
2016-09-09 9:31 ` Will Deacon
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