diff options
| author | James Smart <James.Smart@Emulex.Com> | 2008-06-14 22:52:53 -0400 |
|---|---|---|
| committer | James Bottomley <James.Bottomley@HansenPartnership.com> | 2008-07-12 08:22:28 -0500 |
| commit | 5e9d9b8276980fc5dfa88ce34f6ec88ce3026232 (patch) | |
| tree | 30b495edab629068f929a32f88a66ad705687f34 /drivers/scsi/lpfc/lpfc_init.c | |
| parent | 0d2b6b83030d6a88cbf7db57f84f2daf0e0b251b (diff) | |
[SCSI] lpfc 8.2.7 : Rework the worker thread
Rework of the worker thread to make it more efficient.
Make a finer-grain notfication of pending work so less time is
spent checking conditions. Also made other general cleanups.
Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Diffstat (limited to 'drivers/scsi/lpfc/lpfc_init.c')
| -rw-r--r-- | drivers/scsi/lpfc/lpfc_init.c | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/drivers/scsi/lpfc/lpfc_init.c b/drivers/scsi/lpfc/lpfc_init.c index 6fcddda5851..53cedbafffb 100644 --- a/drivers/scsi/lpfc/lpfc_init.c +++ b/drivers/scsi/lpfc/lpfc_init.c @@ -551,18 +551,18 @@ static void lpfc_hb_timeout(unsigned long ptr) { struct lpfc_hba *phba; + uint32_t tmo_posted; unsigned long iflag; phba = (struct lpfc_hba *)ptr; spin_lock_irqsave(&phba->pport->work_port_lock, iflag); - if (!(phba->pport->work_port_events & WORKER_HB_TMO)) + tmo_posted = phba->pport->work_port_events & WORKER_HB_TMO; + if (!tmo_posted) phba->pport->work_port_events |= WORKER_HB_TMO; spin_unlock_irqrestore(&phba->pport->work_port_lock, iflag); - spin_lock_irqsave(&phba->hbalock, iflag); - if (phba->work_wait) - wake_up(phba->work_wait); - spin_unlock_irqrestore(&phba->hbalock, iflag); + if (!tmo_posted) + lpfc_worker_wake_up(phba); return; } @@ -2104,6 +2104,9 @@ lpfc_pci_probe_one(struct pci_dev *pdev, const struct pci_device_id *pid) phba->work_ha_mask = (HA_ERATT|HA_MBATT|HA_LATT); phba->work_ha_mask |= (HA_RXMASK << (LPFC_ELS_RING * 4)); + /* Initialize the wait queue head for the kernel thread */ + init_waitqueue_head(&phba->work_waitq); + /* Startup the kernel thread for this host adapter. */ phba->worker_thread = kthread_run(lpfc_do_work, phba, "lpfc_worker_%d", phba->brd_no); |