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[SCSI] lpfc 8.3.39: Reduced spinlock contention on SCSI buffer list

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Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
This commit is contained in:
James Smart
2013-04-17 20:17:40 -04:00
committed by James Bottomley
parent d5ce53b7dd
commit a40fc5f0d0
3 changed files with 101 additions and 50 deletions
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6
drivers/scsi/lpfc/lpfc.h
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@@ -813,8 +813,10 @@ struct lpfc_hba {
uint64_t bg_reftag_err_cnt;
/* fastpath list. */
spinlock_t scsi_buf_list_lock;
struct list_head lpfc_scsi_buf_list;
spinlock_t scsi_buf_list_get_lock; /* SCSI buf alloc list lock */
spinlock_t scsi_buf_list_put_lock; /* SCSI buf free list lock */
struct list_head lpfc_scsi_buf_list_get;
struct list_head lpfc_scsi_buf_list_put;
uint32_t total_scsi_bufs;
struct list_head lpfc_iocb_list;
uint32_t total_iocbq_bufs;