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scsi: lpfc: Move SCSI and NVME Stats to hardware queue structures

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Many io statistics were being sampled and saved using adapter-based data
structures. This was creating a lot of contention and cache thrashing in
the I/O path.

Move the statistics to the hardware queue data structures.  Given the
per-queue data structures, use of atomic types is lessened.

Add new sysfs and debugfs stat routines to collate the per hardware queue
values and report at an adapter level.

Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
James Smart
2019-01-28 11:14:25 -08:00
committed by Martin K. Petersen
parent 63df6d637e
commit 4c47efc140
10 changed files with 304 additions and 103 deletions
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9
drivers/scsi/lpfc/lpfc.h
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@@ -479,6 +479,7 @@ struct lpfc_vport {
struct dentry *debug_disc_trc;
struct dentry *debug_nodelist;
struct dentry *debug_nvmestat;
struct dentry *debug_scsistat;
struct dentry *debug_nvmektime;
struct dentry *debug_cpucheck;
struct dentry *vport_debugfs_root;
@@ -946,14 +947,6 @@ struct lpfc_hba {
struct timer_list eratt_poll;
uint32_t eratt_poll_interval;
/*
* stat counters
*/
atomic_t fc4ScsiInputRequests;
atomic_t fc4ScsiOutputRequests;
atomic_t fc4ScsiControlRequests;
atomic_t fc4ScsiIoCmpls;
uint64_t bg_guard_err_cnt;
uint64_t bg_apptag_err_cnt;
uint64_t bg_reftag_err_cnt;