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scsi: megaraid_sas: Add module parameter for FW Async event logging

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Add module parameter to control logging levels of async event
notifications from firmware that get logged to system log.  Also, allow
changing the value from sysfs after driver load.

Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Shivasharan S 2019-06-28 02:50:40 -07:00 committed by Martin K. Petersen
parent 1175b88452
commit d956a116c9
1 changed files with 17 additions and 1 deletions
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18
drivers/scsi/megaraid/megaraid_sas_base.c
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@ -117,6 +117,10 @@ MODULE_PARM_DESC(perf_mode, "Performance mode (only for Aero adapters), options:
"default mode is 'balanced'"
);
int event_log_level = MFI_EVT_CLASS_CRITICAL;
module_param(event_log_level, int, 0644);
MODULE_PARM_DESC(event_log_level, "Asynchronous event logging level- range is: -2(CLASS_DEBUG) to 4(CLASS_DEAD), Default: 2(CLASS_CRITICAL)");
MODULE_LICENSE("GPL");
MODULE_VERSION(MEGASAS_VERSION);
MODULE_AUTHOR("megaraidlinux.pdl@broadcom.com");
@ -416,7 +420,13 @@ megasas_decode_evt(struct megasas_instance *instance)
union megasas_evt_class_locale class_locale;
class_locale.word = le32_to_cpu(evt_detail->cl.word);
if (class_locale.members.class >= MFI_EVT_CLASS_CRITICAL)
if ((event_log_level < MFI_EVT_CLASS_DEBUG) ||
(event_log_level > MFI_EVT_CLASS_DEAD)) {
printk(KERN_WARNING "megaraid_sas: provided event log level is out of range, setting it to default 2(CLASS_CRITICAL), permissible range is: -2 to 4\n");
event_log_level = MFI_EVT_CLASS_CRITICAL;
}
if (class_locale.members.class >= event_log_level)
dev_info(&instance->pdev->dev, "%d (%s/0x%04x/%s) - %s\n",
le32_to_cpu(evt_detail->seq_num),
format_timestamp(le32_to_cpu(evt_detail->time_stamp)),
@ -8762,6 +8772,12 @@ static int __init megasas_init(void)
goto err_pcidrv;
}
if ((event_log_level < MFI_EVT_CLASS_DEBUG) ||
(event_log_level > MFI_EVT_CLASS_DEAD)) {
printk(KERN_WARNING "megarid_sas: provided event log level is out of range, setting it to default 2(CLASS_CRITICAL), permissible range is: -2 to 4\n");
event_log_level = MFI_EVT_CLASS_CRITICAL;
}
rval = driver_create_file(&megasas_pci_driver.driver,
&driver_attr_version);
if (rval)