xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

[SCSI] fnic: Fnic Statistics Collection

Browse Source 
This feature gathers active and cumulative per fnic stats for io,
abort, terminate, reset, vlan discovery path and it also includes
various important stats for debugging issues. It also provided
debugfs and ioctl interface for user to retrieve these stats.
It also provides functionality to reset cumulative stats through
user interface.

Signed-off-by: Hiral Patel <hiralpat@cisco.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
This commit is contained in:
Hiral Patel
2013-09-12 17:45:42 -07:00
committed by James Bottomley
parent 441fbd2595
commit 67125b0287
9 changed files with 972 additions and 25 deletions
Download Patch File Download Diff File Expand all files Collapse all files

19
drivers/scsi/fnic/fnic_main.c
View File

@@ -556,6 +556,13 @@ static int fnic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
host->transportt = fnic_fc_transport;
err = fnic_stats_debugfs_init(fnic);
if (err) {
shost_printk(KERN_ERR, fnic->lport->host,
"Failed to initialize debugfs for stats\n");
fnic_stats_debugfs_remove(fnic);
}
/* Setup PCI resources */
pci_set_drvdata(pdev, fnic);
@@ -917,6 +924,7 @@ err_out_release_regions:
err_out_disable_device:
pci_disable_device(pdev);
err_out_free_hba:
fnic_stats_debugfs_remove(fnic);
scsi_host_put(lp->host);
err_out:
return err;
@@ -969,6 +977,7 @@ static void fnic_remove(struct pci_dev *pdev)
fcoe_ctlr_destroy(&fnic->ctlr);
fc_lport_destroy(lp);
fnic_stats_debugfs_remove(fnic);
/*
* This stops the fnic device, masks all interrupts. Completed
@@ -1014,6 +1023,14 @@ static int __init fnic_init_module(void)
printk(KERN_INFO PFX "%s, ver %s\n", DRV_DESCRIPTION, DRV_VERSION);
/* Create debugfs entries for fnic */
err = fnic_debugfs_init();
if (err < 0) {
printk(KERN_ERR PFX "Failed to create fnic directory "
"for tracing and stats logging\n");
fnic_debugfs_terminate();
}
/* Allocate memory for trace buffer */
err = fnic_trace_buf_init();
if (err < 0) {
@@ -1102,6 +1119,7 @@ err_create_fnic_sgl_slab_max:
kmem_cache_destroy(fnic_sgl_cache[FNIC_SGL_CACHE_DFLT]);
err_create_fnic_sgl_slab_dflt:
fnic_trace_free();
fnic_debugfs_terminate();
return err;
}
@@ -1118,6 +1136,7 @@ static void __exit fnic_cleanup_module(void)
kmem_cache_destroy(fnic_io_req_cache);
fc_release_transport(fnic_fc_transport);
fnic_trace_free();
fnic_debugfs_terminate();
}
module_init(fnic_init_module);