forked from luck/tmp_suning_uos_patched
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: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -1545,6 +1545,18 @@ static ssize_t status_show(struct device *dev,
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}
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}
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static DEVICE_ATTR_RO(status);
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static DEVICE_ATTR_RO(status);
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static ssize_t cpu_show(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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int val;
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struct etm_drvdata *drvdata = dev_get_drvdata(dev->parent);
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val = drvdata->cpu;
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return scnprintf(buf, PAGE_SIZE, "%d\n", val);
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}
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static DEVICE_ATTR_RO(cpu);
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static ssize_t traceid_show(struct device *dev,
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static ssize_t traceid_show(struct device *dev,
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struct device_attribute *attr, char *buf)
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struct device_attribute *attr, char *buf)
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{
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{
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@ -1621,6 +1633,7 @@ static struct attribute *coresight_etm_attrs[] = {
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&dev_attr_timestamp_event.attr,
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&dev_attr_timestamp_event.attr,
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&dev_attr_status.attr,
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&dev_attr_status.attr,
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&dev_attr_traceid.attr,
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&dev_attr_traceid.attr,
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&dev_attr_cpu.attr,
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NULL,
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NULL,
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};
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};
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ATTRIBUTE_GROUPS(coresight_etm);
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ATTRIBUTE_GROUPS(coresight_etm);
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