From ba53572bf02da1836e5780e8c283c8e0cea714e2 Mon Sep 17 00:00:00 2001 From: Shivasharan S Date: Tue, 7 May 2019 10:05:49 -0700 Subject: scsi: megaraid_sas: Export RAID map through debugfs Create a debugfs interface for megaraid_sas driver. Provide interface to dump driver RAID map in debugfs. Signed-off-by: Sumit Saxena Signed-off-by: Shivasharan S Signed-off-by: Martin K. Petersen --- drivers/scsi/megaraid/megaraid_sas_base.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) (limited to 'drivers/scsi/megaraid/megaraid_sas_base.c') diff --git a/drivers/scsi/megaraid/megaraid_sas_base.c b/drivers/scsi/megaraid/megaraid_sas_base.c index 555292e5ff27..3a9128ed304d 100644 --- a/drivers/scsi/megaraid/megaraid_sas_base.c +++ b/drivers/scsi/megaraid/megaraid_sas_base.c @@ -188,6 +188,12 @@ static bool support_nvme_encapsulation; /* define lock for aen poll */ spinlock_t poll_aen_lock; +extern struct dentry *megasas_debugfs_root; +extern void megasas_init_debugfs(void); +extern void megasas_exit_debugfs(void); +extern void megasas_setup_debugfs(struct megasas_instance *instance); +extern void megasas_destroy_debugfs(struct megasas_instance *instance); + void megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd, u8 alt_status); @@ -7139,6 +7145,8 @@ static int megasas_probe_one(struct pci_dev *pdev, goto fail_start_aen; } + megasas_setup_debugfs(instance); + /* Get current SR-IOV LD/VF affiliation */ if (instance->requestorId) megasas_get_ld_vf_affiliation(instance, 1); @@ -7609,6 +7617,8 @@ skip_firing_dcmds: megasas_free_ctrl_mem(instance); + megasas_destroy_debugfs(instance); + scsi_host_put(host); pci_disable_device(pdev); @@ -8536,6 +8546,8 @@ static int __init megasas_init(void) megasas_mgmt_majorno = rval; + megasas_init_debugfs(); + /* * Register ourselves as PCI hotplug module */ @@ -8595,6 +8607,7 @@ err_dcf_rel_date: err_dcf_attr_ver: pci_unregister_driver(&megasas_pci_driver); err_pcidrv: + megasas_exit_debugfs(); unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl"); return rval; } @@ -8617,6 +8630,7 @@ static void __exit megasas_exit(void) &driver_attr_support_nvme_encapsulation); pci_unregister_driver(&megasas_pci_driver); + megasas_exit_debugfs(); unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl"); } -- cgit v1.2.3-59-g8ed1b