diff options
| author | Justin Tee <justin.tee@broadcom.com> | 2024-04-29 15:15:44 -0700 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2024-05-06 21:53:58 -0400 |
| commit | e780c9423b1095ae9d96ce8fdbe2a92592d88073 (patch) | |
| tree | 4b6e31d1f249bc5eaf1216aff229768be038f617 /drivers/scsi/lpfc/lpfc_nvme.c | |
| parent | 5f800d72762ad8cf54104edafc6e882e4be96d24 (diff) | |
scsi: lpfc: Change lpfc_hba hba_flag member into a bitmask
In attempt to reduce the amount of unnecessary phba->hbalock acquisitions
in the lpfc driver, change hba_flag into an unsigned long bitmask and use
clear_bit/test_bit bitwise atomic APIs instead of reliance on phba->hbalock
for synchronization.
Signed-off-by: Justin Tee <justin.tee@broadcom.com>
Link: https://lore.kernel.org/r/20240429221547.6842-6-justintee8345@gmail.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/lpfc/lpfc_nvme.c')
| -rw-r--r-- | drivers/scsi/lpfc/lpfc_nvme.c | 27 |
1 files changed, 11 insertions, 16 deletions
diff --git a/drivers/scsi/lpfc/lpfc_nvme.c b/drivers/scsi/lpfc/lpfc_nvme.c index c5792eaf3f64..d70da2736c94 100644 --- a/drivers/scsi/lpfc/lpfc_nvme.c +++ b/drivers/scsi/lpfc/lpfc_nvme.c @@ -95,7 +95,7 @@ lpfc_nvme_create_queue(struct nvme_fc_local_port *pnvme_lport, vport = lport->vport; if (!vport || test_bit(FC_UNLOADING, &vport->load_flag) || - vport->phba->hba_flag & HBA_IOQ_FLUSH) + test_bit(HBA_IOQ_FLUSH, &vport->phba->hba_flag)) return -ENODEV; qhandle = kzalloc(sizeof(struct lpfc_nvme_qhandle), GFP_KERNEL); @@ -272,7 +272,7 @@ lpfc_nvme_handle_lsreq(struct lpfc_hba *phba, remoteport = lpfc_rport->remoteport; if (!vport->localport || - vport->phba->hba_flag & HBA_IOQ_FLUSH) + test_bit(HBA_IOQ_FLUSH, &vport->phba->hba_flag)) return -EINVAL; lport = vport->localport->private; @@ -569,7 +569,7 @@ __lpfc_nvme_ls_req(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp, ndlp->nlp_DID, ntype, nstate); return -ENODEV; } - if (vport->phba->hba_flag & HBA_IOQ_FLUSH) + if (test_bit(HBA_IOQ_FLUSH, &vport->phba->hba_flag)) return -ENODEV; if (!vport->phba->sli4_hba.nvmels_wq) @@ -675,7 +675,7 @@ lpfc_nvme_ls_req(struct nvme_fc_local_port *pnvme_lport, vport = lport->vport; if (test_bit(FC_UNLOADING, &vport->load_flag) || - vport->phba->hba_flag & HBA_IOQ_FLUSH) + test_bit(HBA_IOQ_FLUSH, &vport->phba->hba_flag)) return -ENODEV; atomic_inc(&lport->fc4NvmeLsRequests); @@ -1568,7 +1568,7 @@ lpfc_nvme_fcp_io_submit(struct nvme_fc_local_port *pnvme_lport, phba = vport->phba; if ((unlikely(test_bit(FC_UNLOADING, &vport->load_flag))) || - phba->hba_flag & HBA_IOQ_FLUSH) { + test_bit(HBA_IOQ_FLUSH, &phba->hba_flag)) { lpfc_printf_vlog(vport, KERN_INFO, LOG_NVME_IOERR, "6124 Fail IO, Driver unload\n"); atomic_inc(&lport->xmt_fcp_err); @@ -1909,24 +1909,19 @@ lpfc_nvme_fcp_abort(struct nvme_fc_local_port *pnvme_lport, return; } - /* Guard against IO completion being called at same time */ - spin_lock_irqsave(&lpfc_nbuf->buf_lock, flags); - - /* If the hba is getting reset, this flag is set. It is - * cleared when the reset is complete and rings reestablished. - */ - spin_lock(&phba->hbalock); /* driver queued commands are in process of being flushed */ - if (phba->hba_flag & HBA_IOQ_FLUSH) { - spin_unlock(&phba->hbalock); - spin_unlock_irqrestore(&lpfc_nbuf->buf_lock, flags); + if (test_bit(HBA_IOQ_FLUSH, &phba->hba_flag)) { lpfc_printf_vlog(vport, KERN_ERR, LOG_TRACE_EVENT, "6139 Driver in reset cleanup - flushing " - "NVME Req now. hba_flag x%x\n", + "NVME Req now. hba_flag x%lx\n", phba->hba_flag); return; } + /* Guard against IO completion being called at same time */ + spin_lock_irqsave(&lpfc_nbuf->buf_lock, flags); + spin_lock(&phba->hbalock); + nvmereq_wqe = &lpfc_nbuf->cur_iocbq; /* |