lpfc: Convert to host_lock less w/ interrupts disabled externally
Subsystems (2)
PATCH 8/11 lpfc: Convert to host_lock less w/ interrupts disabled externally
From: Nicholas Bellinger <[email protected]>
This patch converts lpfc to run in host_lock less mode with the new IRQ_DISABLE_SCSI_QCMD() that disables interrupts while calling ->queuecommand() dispatch. It also drops the legacy host_lock unlock optimization around lpfc_sli_handle_fast_ring_event().
Signed-off-by Nicholas A. Bellinger <[email protected]>
--- drivers/scsi/lpfc/lpfc_scsi.c | 9 ++++----- 1 files changed, 4 insertions(+), 5 deletions(-)
drivers/scsi/lpfc/lpfc_scsi.c +4 -5
@@ -2886,7 +2886,7 @@ void lpfc_poll_timeout(unsigned long ptr) }/** -* lpfc_queuecommand - scsi_host_template queuecommand entry point +* lpfc_queuecommand_irq_disable - scsi_host_template queuecommand entry point * @cmnd: Pointer to scsi_cmnd data structure. * @done: Pointer to done routine. *
@@ -2899,7 +2899,8 @@ void lpfc_poll_timeout(unsigned long ptr)* SCSI_MLQUEUE_HOST_BUSY - Block all devices served by this host temporarily. **/ static int -lpfc_queuecommand_lck (struct scsi_cmnd *cmnd,void (*done) (struct scsi_cmnd *)) +lpfc_queuecommand_irq_disable (struct scsi_cmnd *cmnd, +void (*done) (struct scsi_cmnd *)) {struct Scsi_Host *shost = cmnd->device->host;struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
@@ -3038,11 +3039,9 @@ lpfc_queuecommand_lck(struct scsi_cmnd *cmnd, void (*done) (struct scsi_cmnd *)) goto out_host_busy_free_buf; }if (phba->cfg_poll &ENABLE_FCP_RING_POLLING ) { -spin_unlock (shost->host_lock);lpfc_sli_handle_fast_ring_event (phba, &phba->sli.ring[LPFC_FCP_RING ],HA_R0RE_REQ ); -spin_lock (shost->host_lock);if (phba->cfg_poll &DISABLE_FCP_RING_INT )lpfc_poll_rearm_timer (phba); }
@@ -3060,7 +3059,7 @@ lpfc_queuecommand_lck(struct scsi_cmnd *cmnd, void (*done) (struct scsi_cmnd *))return 0 ; } -static DEF_SCSI_QCMD (lpfc_queuecommand) +static IRQ_DISABLE_SCSI_QCMD (lpfc_queuecommand)/** * lpfc_abort_handler - scsi_host_template eh_abort_handler entry point
Signature · 1 line
1.7.2.3