scsi: megaraid_sas: Expose fw_cmds_outstanding through sysfs
Expose FW outstanding commands (fw_outstanding) through sysfs interface. This helps in debugging certain performance issues in the field. Signed-off-by: Sasikumar Chandrasekaran <sasikumar.pc@broadcom.com> Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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@ -3122,6 +3122,16 @@ megasas_ldio_outstanding_show(struct device *cdev, struct device_attribute *attr
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return snprintf(buf, PAGE_SIZE, "%d\n", atomic_read(&instance->ldio_outstanding));
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}
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static ssize_t
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megasas_fw_cmds_outstanding_show(struct device *cdev,
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struct device_attribute *attr, char *buf)
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{
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struct Scsi_Host *shost = class_to_shost(cdev);
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struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata;
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return snprintf(buf, PAGE_SIZE, "%d\n", atomic_read(&instance->fw_outstanding));
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}
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static DEVICE_ATTR(fw_crash_buffer, S_IRUGO | S_IWUSR,
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megasas_fw_crash_buffer_show, megasas_fw_crash_buffer_store);
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static DEVICE_ATTR(fw_crash_buffer_size, S_IRUGO,
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@ -3132,6 +3142,8 @@ static DEVICE_ATTR(page_size, S_IRUGO,
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megasas_page_size_show, NULL);
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static DEVICE_ATTR(ldio_outstanding, S_IRUGO,
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megasas_ldio_outstanding_show, NULL);
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static DEVICE_ATTR(fw_cmds_outstanding, S_IRUGO,
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megasas_fw_cmds_outstanding_show, NULL);
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struct device_attribute *megaraid_host_attrs[] = {
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&dev_attr_fw_crash_buffer_size,
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@ -3139,6 +3151,7 @@ struct device_attribute *megaraid_host_attrs[] = {
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&dev_attr_fw_crash_state,
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&dev_attr_page_size,
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&dev_attr_ldio_outstanding,
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&dev_attr_fw_cmds_outstanding,
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NULL,
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};
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