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Commit 88d155c6 authored by Shivasharan S's avatar Shivasharan S Committed by Martin K. Petersen
Browse files

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: default avatarSasikumar Chandrasekaran <sasikumar.pc@broadcom.com>
Signed-off-by: default avatarShivasharan S <shivasharan.srikanteshwara@broadcom.com>
Signed-off-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
parent 4959e61b

drivers/scsi/megaraid/megaraid_sas_base.c

+13 −0
Original line number Diff line number Diff line
@@ -3122,6 +3122,16 @@ megasas_ldio_outstanding_show(struct device *cdev, struct device_attribute *attr 
	return snprintf(buf, PAGE_SIZE, "%d\n", atomic_read(&instance->ldio_outstanding));

}



static ssize_t

megasas_fw_cmds_outstanding_show(struct device *cdev,

				 struct device_attribute *attr, char *buf)

{

	struct Scsi_Host *shost = class_to_shost(cdev);

	struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata;



	return snprintf(buf, PAGE_SIZE, "%d\n", atomic_read(&instance->fw_outstanding));

}



static DEVICE_ATTR(fw_crash_buffer, S_IRUGO | S_IWUSR,

	megasas_fw_crash_buffer_show, megasas_fw_crash_buffer_store);

static DEVICE_ATTR(fw_crash_buffer_size, S_IRUGO,
@@ -3132,6 +3142,8 @@ static DEVICE_ATTR(page_size, S_IRUGO, 
	megasas_page_size_show, NULL);

static DEVICE_ATTR(ldio_outstanding, S_IRUGO,

	megasas_ldio_outstanding_show, NULL);

static DEVICE_ATTR(fw_cmds_outstanding, S_IRUGO,

	megasas_fw_cmds_outstanding_show, NULL);



struct device_attribute *megaraid_host_attrs[] = {

	&dev_attr_fw_crash_buffer_size,
@@ -3139,6 +3151,7 @@ struct device_attribute *megaraid_host_attrs[] = { 
	&dev_attr_fw_crash_state,

	&dev_attr_page_size,

	&dev_attr_ldio_outstanding,

	&dev_attr_fw_cmds_outstanding,

	NULL,

};