From: James Smart Date: Mon, 15 May 2017 22:20:43 +0000 (-0700) Subject: scsi: lpfc: Fix NMI watchdog assertions when running nvmet IOPS tests X-Git-Tag: v4.12-rc3~22^2~14 X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=7869da183a7cfc8a2189f6eddd3bc558be40d5e3;p=karo-tx-linux.git scsi: lpfc: Fix NMI watchdog assertions when running nvmet IOPS tests After running IOPS test for 30 second we get kernel:NMI watchdog: Watchdog detected hard LOCKUP on cpu 0 The driver is speend too much time in its ISR. In ISR EQ and CQ processing routines, if we hit the entry_repost numbers of EQE/CQEs just break out of the routine as opposed to hitting the doorbell with NOARM and continue processing. Signed-off-by: Dick Kennedy Signed-off-by: James Smart Reviewed-by: Hannes Reinecke Signed-off-by: Martin K. Petersen --- diff --git a/drivers/scsi/lpfc/lpfc_debugfs.c b/drivers/scsi/lpfc/lpfc_debugfs.c index a41daedeb967..7284533f4df2 100644 --- a/drivers/scsi/lpfc/lpfc_debugfs.c +++ b/drivers/scsi/lpfc/lpfc_debugfs.c @@ -3075,11 +3075,11 @@ __lpfc_idiag_print_wq(struct lpfc_queue *qp, char *wqtype, qp->assoc_qid, qp->q_cnt_1, (unsigned long long)qp->q_cnt_4); len += snprintf(pbuffer + len, LPFC_QUE_INFO_GET_BUF_SIZE - len, - "\t\tWQID[%02d], QE-CNT[%04d], QE-SIZE[%04d], " - "HOST-IDX[%04d], PORT-IDX[%04d]", + "\t\tWQID[%02d], QE-CNT[%04d], QE-SZ[%04d], " + "HST-IDX[%04d], PRT-IDX[%04d], PST[%03d]", qp->queue_id, qp->entry_count, qp->entry_size, qp->host_index, - qp->hba_index); + qp->hba_index, qp->entry_repost); len += snprintf(pbuffer + len, LPFC_QUE_INFO_GET_BUF_SIZE - len, "\n"); return len; @@ -3126,11 +3126,11 @@ __lpfc_idiag_print_cq(struct lpfc_queue *qp, char *cqtype, qp->assoc_qid, qp->q_cnt_1, qp->q_cnt_2, qp->q_cnt_3, (unsigned long long)qp->q_cnt_4); len += snprintf(pbuffer + len, LPFC_QUE_INFO_GET_BUF_SIZE - len, - "\tCQID[%02d], QE-CNT[%04d], QE-SIZE[%04d], " - "HOST-IDX[%04d], PORT-IDX[%04d]", + "\tCQID[%02d], QE-CNT[%04d], QE-SZ[%04d], " + "HST-IDX[%04d], PRT-IDX[%04d], PST[%03d]", qp->queue_id, qp->entry_count, qp->entry_size, qp->host_index, - qp->hba_index); + qp->hba_index, qp->entry_repost); len += snprintf(pbuffer + len, LPFC_QUE_INFO_GET_BUF_SIZE - len, "\n"); @@ -3152,16 +3152,16 @@ __lpfc_idiag_print_rqpair(struct lpfc_queue *qp, struct lpfc_queue *datqp, qp->assoc_qid, qp->q_cnt_1, qp->q_cnt_2, qp->q_cnt_3, (unsigned long long)qp->q_cnt_4); len += snprintf(pbuffer + len, LPFC_QUE_INFO_GET_BUF_SIZE - len, - "\t\tHQID[%02d], QE-CNT[%04d], QE-SIZE[%04d], " - "HOST-IDX[%04d], PORT-IDX[%04d]\n", + "\t\tHQID[%02d], QE-CNT[%04d], QE-SZ[%04d], " + "HST-IDX[%04d], PRT-IDX[%04d], PST[%03d]\n", qp->queue_id, qp->entry_count, qp->entry_size, - qp->host_index, qp->hba_index); + qp->host_index, qp->hba_index, qp->entry_repost); len += snprintf(pbuffer + len, LPFC_QUE_INFO_GET_BUF_SIZE - len, - "\t\tDQID[%02d], QE-CNT[%04d], QE-SIZE[%04d], " - "HOST-IDX[%04d], PORT-IDX[%04d]\n", + "\t\tDQID[%02d], QE-CNT[%04d], QE-SZ[%04d], " + "HST-IDX[%04d], PRT-IDX[%04d], PST[%03d]\n", datqp->queue_id, datqp->entry_count, datqp->entry_size, datqp->host_index, - datqp->hba_index); + datqp->hba_index, datqp->entry_repost); return len; } @@ -3247,10 +3247,10 @@ __lpfc_idiag_print_eq(struct lpfc_queue *qp, char *eqtype, eqtype, qp->q_cnt_1, qp->q_cnt_2, qp->q_cnt_3, (unsigned long long)qp->q_cnt_4); len += snprintf(pbuffer + len, LPFC_QUE_INFO_GET_BUF_SIZE - len, - "EQID[%02d], QE-CNT[%04d], QE-SIZE[%04d], " - "HOST-IDX[%04d], PORT-IDX[%04d]", + "EQID[%02d], QE-CNT[%04d], QE-SZ[%04d], " + "HST-IDX[%04d], PRT-IDX[%04d], PST[%03d]", qp->queue_id, qp->entry_count, qp->entry_size, - qp->host_index, qp->hba_index); + qp->host_index, qp->hba_index, qp->entry_repost); len += snprintf(pbuffer + len, LPFC_QUE_INFO_GET_BUF_SIZE - len, "\n"); return len; diff --git a/drivers/scsi/lpfc/lpfc_sli.c b/drivers/scsi/lpfc/lpfc_sli.c index f344abce4949..cc45e9191062 100644 --- a/drivers/scsi/lpfc/lpfc_sli.c +++ b/drivers/scsi/lpfc/lpfc_sli.c @@ -12961,7 +12961,7 @@ lpfc_sli4_sp_handle_eqe(struct lpfc_hba *phba, struct lpfc_eqe *eqe, while ((cqe = lpfc_sli4_cq_get(cq))) { workposted |= lpfc_sli4_sp_handle_mcqe(phba, cqe); if (!(++ecount % cq->entry_repost)) - lpfc_sli4_cq_release(cq, LPFC_QUEUE_NOARM); + break; cq->CQ_mbox++; } break; @@ -12975,7 +12975,7 @@ lpfc_sli4_sp_handle_eqe(struct lpfc_hba *phba, struct lpfc_eqe *eqe, workposted |= lpfc_sli4_sp_handle_cqe(phba, cq, cqe); if (!(++ecount % cq->entry_repost)) - lpfc_sli4_cq_release(cq, LPFC_QUEUE_NOARM); + break; } /* Track the max number of CQEs processed in 1 EQ */ @@ -13227,10 +13227,6 @@ drop: case FC_STATUS_INSUFF_BUF_NEED_BUF: hrq->RQ_no_posted_buf++; /* Post more buffers if possible */ - spin_lock_irqsave(&phba->hbalock, iflags); - phba->hba_flag |= HBA_POST_RECEIVE_BUFFER; - spin_unlock_irqrestore(&phba->hbalock, iflags); - workposted = true; break; } out: @@ -13384,7 +13380,7 @@ process_cq: while ((cqe = lpfc_sli4_cq_get(cq))) { workposted |= lpfc_sli4_fp_handle_cqe(phba, cq, cqe); if (!(++ecount % cq->entry_repost)) - lpfc_sli4_cq_release(cq, LPFC_QUEUE_NOARM); + break; } /* Track the max number of CQEs processed in 1 EQ */ @@ -13475,7 +13471,7 @@ lpfc_sli4_fof_handle_eqe(struct lpfc_hba *phba, struct lpfc_eqe *eqe) while ((cqe = lpfc_sli4_cq_get(cq))) { workposted |= lpfc_sli4_fp_handle_cqe(phba, cq, cqe); if (!(++ecount % cq->entry_repost)) - lpfc_sli4_cq_release(cq, LPFC_QUEUE_NOARM); + break; } /* Track the max number of CQEs processed in 1 EQ */ @@ -13557,7 +13553,7 @@ lpfc_sli4_fof_intr_handler(int irq, void *dev_id) while ((eqe = lpfc_sli4_eq_get(eq))) { lpfc_sli4_fof_handle_eqe(phba, eqe); if (!(++ecount % eq->entry_repost)) - lpfc_sli4_eq_release(eq, LPFC_QUEUE_NOARM); + break; eq->EQ_processed++; } @@ -13674,7 +13670,7 @@ lpfc_sli4_hba_intr_handler(int irq, void *dev_id) lpfc_sli4_hba_handle_eqe(phba, eqe, hba_eqidx); if (!(++ecount % fpeq->entry_repost)) - lpfc_sli4_eq_release(fpeq, LPFC_QUEUE_NOARM); + break; fpeq->EQ_processed++; }