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Commit adfad874 authored by Mathieu Poirier's avatar Mathieu Poirier Committed by Greg Kroah-Hartman
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coresight: etm3x: adding cpu affinity to sysFS interface 



Without access to the device tree, it is impossible to know
what CPU a tracer is affined to.  As such adding a new sysFS
interface to convey the information.

Signed-off-by: default avatarMathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 58b8d51b

drivers/hwtracing/coresight/coresight-etm3x.c

+13 −0
Original line number Diff line number Diff line
@@ -1545,6 +1545,18 @@ static ssize_t status_show(struct device *dev, 
}

static DEVICE_ATTR_RO(status);



static ssize_t cpu_show(struct device *dev,

			struct device_attribute *attr, char *buf)

{

	int val;

	struct etm_drvdata *drvdata = dev_get_drvdata(dev->parent);



	val = drvdata->cpu;

	return scnprintf(buf, PAGE_SIZE, "%d\n", val);



}

static DEVICE_ATTR_RO(cpu);



static ssize_t traceid_show(struct device *dev,

			    struct device_attribute *attr, char *buf)

{
@@ -1621,6 +1633,7 @@ static struct attribute *coresight_etm_attrs[] = { 
	&dev_attr_timestamp_event.attr,

	&dev_attr_status.attr,

	&dev_attr_traceid.attr,

	&dev_attr_cpu.attr,

	NULL,

};

ATTRIBUTE_GROUPS(coresight_etm);