diff options
| -rw-r--r-- | drivers/scsi/qla2xxx/qla_def.h | 1 | ||||
| -rw-r--r-- | drivers/scsi/qla2xxx/qla_os.c | 20 |
2 files changed, 18 insertions, 3 deletions
diff --git a/drivers/scsi/qla2xxx/qla_def.h b/drivers/scsi/qla2xxx/qla_def.h index 8aa1cccebab1..d76c0e9f114c 100644 --- a/drivers/scsi/qla2xxx/qla_def.h +++ b/drivers/scsi/qla2xxx/qla_def.h @@ -4624,6 +4624,7 @@ struct qla_hw_data { struct workqueue_struct *wq; struct work_struct heartbeat_work; struct qlfc_fw fw_buf; + unsigned long last_heartbeat_run_jiffies; /* FCP_CMND priority support */ struct qla_fcp_prio_cfg *fcp_prio_cfg; diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c index 9c4f2b38b34e..81451c11eef4 100644 --- a/drivers/scsi/qla2xxx/qla_os.c +++ b/drivers/scsi/qla2xxx/qla_os.c @@ -7215,7 +7215,7 @@ skip: return do_heartbeat; } -static void qla_heart_beat(struct scsi_qla_host *vha) +static void qla_heart_beat(struct scsi_qla_host *vha, u16 dpc_started) { struct qla_hw_data *ha = vha->hw; @@ -7225,8 +7225,19 @@ static void qla_heart_beat(struct scsi_qla_host *vha) if (vha->hw->flags.eeh_busy || qla2x00_chip_is_down(vha)) return; - if (qla_do_heartbeat(vha)) + /* + * dpc thread cannot run if heartbeat is running at the same time. + * We also do not want to starve heartbeat task. Therefore, do + * heartbeat task at least once every 5 seconds. + */ + if (dpc_started && + time_before(jiffies, ha->last_heartbeat_run_jiffies + 5 * HZ)) + return; + + if (qla_do_heartbeat(vha)) { + ha->last_heartbeat_run_jiffies = jiffies; queue_work(ha->wq, &ha->heartbeat_work); + } } /************************************************************************** @@ -7417,6 +7428,8 @@ qla2x00_timer(struct timer_list *t) start_dpc++; } + /* borrowing w to signify dpc will run */ + w = 0; /* Schedule the DPC routine if needed */ if ((test_bit(ISP_ABORT_NEEDED, &vha->dpc_flags) || test_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags) || @@ -7449,9 +7462,10 @@ qla2x00_timer(struct timer_list *t) test_bit(RELOGIN_NEEDED, &vha->dpc_flags), test_bit(PROCESS_PUREX_IOCB, &vha->dpc_flags)); qla2xxx_wake_dpc(vha); + w = 1; } - qla_heart_beat(vha); + qla_heart_beat(vha, w); qla2x00_restart_timer(vha, WATCH_INTERVAL); } |