Add debugfs interface to display SLI queue information
Signed-off-by: James Smart <james.smart@xxxxxxxxxx>
---
lpfc_debugfs.h | 3 +++
lpfc_sli.c | 35 ++++++++++++++++++++++++++++++++++-
lpfc_sli4.h | 29 +++++++++++++++++++++++++++++
3 files changed, 66 insertions(+), 1 deletion(-)
diff -upNr a/drivers/scsi/lpfc/lpfc_debugfs.h b/drivers/scsi/lpfc/lpfc_debugfs.h
--- a/drivers/scsi/lpfc/lpfc_debugfs.h 2012-07-22 11:18:36.000000000 -0400
+++ b/drivers/scsi/lpfc/lpfc_debugfs.h 2012-07-22 12:45:05.890486486 -0400
@@ -36,6 +36,9 @@
/* dumpHostSlim output buffer size */
#define LPFC_DUMPHOSTSLIM_SIZE 4096
+/* dumpSLIqinfo output buffer size */
+#define LPFC_DUMPSLIQINFO_SIZE 4096
+
/* hbqinfo output buffer size */
#define LPFC_HBQINFO_SIZE 8192
diff -upNr a/drivers/scsi/lpfc/lpfc_sli4.h b/drivers/scsi/lpfc/lpfc_sli4.h
--- a/drivers/scsi/lpfc/lpfc_sli4.h 2012-07-22 11:18:36.000000000 -0400
+++ b/drivers/scsi/lpfc/lpfc_sli4.h 2012-07-22 12:45:05.896486487 -0400
@@ -141,6 +141,35 @@ struct lpfc_queue {
uint32_t page_count; /* Number of pages allocated for this queue */
uint32_t host_index; /* The host's index for putting or getting */
uint32_t hba_index; /* The last known hba index for get or put */
+
+ /* For q stats */
+ uint32_t q_cnt_1;
+ uint32_t q_cnt_2;
+ uint32_t q_cnt_3;
+ uint64_t q_cnt_4;
+/* defines for EQ stats */
+#define EQ_max_eqe q_cnt_1
+#define EQ_no_entry q_cnt_2
+#define EQ_badstate q_cnt_3
+#define EQ_processed q_cnt_4
+
+/* defines for CQ stats */
+#define CQ_mbox q_cnt_1
+#define CQ_max_cqe q_cnt_1
+#define CQ_release_wqe q_cnt_2
+#define CQ_xri_aborted q_cnt_3
+#define CQ_wq q_cnt_4
+
+/* defines for WQ stats */
+#define WQ_overflow q_cnt_1
+#define WQ_posted q_cnt_4
+
+/* defines for RQ stats */
+#define RQ_no_posted_buf q_cnt_1
+#define RQ_no_buf_found q_cnt_2
+#define RQ_buf_trunc q_cnt_3
+#define RQ_rcv_buf q_cnt_4
+
union sli4_qe qe[1]; /* array to index entries (must be last) */
};
diff -upNr a/drivers/scsi/lpfc/lpfc_sli.c b/drivers/scsi/lpfc/lpfc_sli.c
--- a/drivers/scsi/lpfc/lpfc_sli.c 2012-07-22 11:18:36.000000000 -0400
+++ b/drivers/scsi/lpfc/lpfc_sli.c 2012-07-22 12:45:05.916486486 -0400
@@ -101,8 +101,11 @@ lpfc_sli4_wq_put(struct lpfc_queue *q, u
temp_wqe = q->qe[q->host_index].wqe;
/* If the host has not yet processed the next entry then we are done */
- if (((q->host_index + 1) % q->entry_count) == q->hba_index)
+ if (((q->host_index + 1) % q->entry_count) == q->hba_index) {
+ q->WQ_overflow++;
return -ENOMEM;
+ }
+ q->WQ_posted++;
/* set consumption flag every once in a while */
if (!((q->host_index + 1) % q->entry_repost))
bf_set(wqe_wqec, &wqe->generic.wqe_com, 1);
@@ -11311,14 +11314,17 @@ lpfc_sli4_sp_handle_rcqe(struct lpfc_hba
case FC_STATUS_RQ_BUF_LEN_EXCEEDED:
lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
"2537 Receive Frame Truncated!!\n");
+ hrq->RQ_buf_trunc++;
case FC_STATUS_RQ_SUCCESS:
lpfc_sli4_rq_release(hrq, drq);
spin_lock_irqsave(&phba->hbalock, iflags);
dma_buf = lpfc_sli_hbqbuf_get(&phba->hbqs[0].hbq_buffer_list);
if (!dma_buf) {
+ hrq->RQ_no_buf_found++;
spin_unlock_irqrestore(&phba->hbalock, iflags);
goto out;
}
+ hrq->RQ_rcv_buf++;
memcpy(&dma_buf->cq_event.cqe.rcqe_cmpl, rcqe, sizeof(*rcqe));
/* save off the frame for the word thread to process */
list_add_tail(&dma_buf->cq_event.list,
@@ -11330,6 +11336,7 @@ lpfc_sli4_sp_handle_rcqe(struct lpfc_hba
break;
case FC_STATUS_INSUFF_BUF_NEED_BUF:
case FC_STATUS_INSUFF_BUF_FRM_DISC:
+ hrq->RQ_no_posted_buf++;
/* Post more buffers if possible */
spin_lock_irqsave(&phba->hbalock, iflags);
phba->hba_flag |= HBA_POST_RECEIVE_BUFFER;
@@ -11457,6 +11464,7 @@ lpfc_sli4_sp_handle_eqe(struct lpfc_hba
workposted |= lpfc_sli4_sp_handle_mcqe(phba, cqe);
if (!(++ecount % cq->entry_repost))
lpfc_sli4_cq_release(cq, LPFC_QUEUE_NOARM);
+ cq->CQ_mbox++;
}
break;
case LPFC_WCQ:
@@ -11470,6 +11478,10 @@ lpfc_sli4_sp_handle_eqe(struct lpfc_hba
if (!(++ecount % cq->entry_repost))
lpfc_sli4_cq_release(cq, LPFC_QUEUE_NOARM);
}
+
+ /* Track the max number of CQEs processed in 1 EQ */
+ if (ecount > cq->CQ_max_cqe)
+ cq->CQ_max_cqe = ecount;
break;
default:
lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
@@ -11621,17 +11633,20 @@ lpfc_sli4_fp_handle_wcqe(struct lpfc_hba
/* Check and process for different type of WCQE and dispatch */
switch (bf_get(lpfc_wcqe_c_code, &wcqe)) {
case CQE_CODE_COMPL_WQE:
+ cq->CQ_wq++;
/* Process the WQ complete event */
phba->last_completion_time = jiffies;
lpfc_sli4_fp_handle_fcp_wcqe(phba,
(struct lpfc_wcqe_complete *)&wcqe);
break;
case CQE_CODE_RELEASE_WQE:
+ cq->CQ_release_wqe++;
/* Process the WQ release event */
lpfc_sli4_fp_handle_rel_wcqe(phba, cq,
(struct lpfc_wcqe_release *)&wcqe);
break;
case CQE_CODE_XRI_ABORTED:
+ cq->CQ_xri_aborted++;
/* Process the WQ XRI abort event */
phba->last_completion_time = jiffies;
workposted = lpfc_sli4_sp_handle_abort_xri_wcqe(phba, cq,
@@ -11709,6 +11724,10 @@ lpfc_sli4_fp_handle_eqe(struct lpfc_hba
lpfc_sli4_cq_release(cq, LPFC_QUEUE_NOARM);
}
+ /* Track the max number of CQEs processed in 1 EQ */
+ if (ecount > cq->CQ_max_cqe)
+ cq->CQ_max_cqe = ecount;
+
/* Catch the no cq entry condition */
if (unlikely(ecount == 0))
lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
@@ -11780,6 +11799,7 @@ lpfc_sli4_sp_intr_handler(int irq, void
/* Check device state for handling interrupt */
if (unlikely(lpfc_intr_state_check(phba))) {
+ speq->EQ_badstate++;
/* Check again for link_state with lock held */
spin_lock_irqsave(&phba->hbalock, iflag);
if (phba->link_state < LPFC_LINK_DOWN)
@@ -11796,13 +11816,19 @@ lpfc_sli4_sp_intr_handler(int irq, void
lpfc_sli4_sp_handle_eqe(phba, eqe);
if (!(++ecount % speq->entry_repost))
lpfc_sli4_eq_release(speq, LPFC_QUEUE_NOARM);
+ speq->EQ_processed++;
}
+ /* Track the max number of EQEs processed in 1 intr */
+ if (ecount > speq->EQ_max_eqe)
+ speq->EQ_max_eqe = ecount;
+
/* Always clear and re-arm the slow-path EQ */
lpfc_sli4_eq_release(speq, LPFC_QUEUE_REARM);
/* Catch the no cq entry condition */
if (unlikely(ecount == 0)) {
+ speq->EQ_no_entry++;
if (phba->intr_type == MSIX)
/* MSI-X treated interrupt served as no EQ share INT */
lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
@@ -11864,6 +11890,7 @@ lpfc_sli4_fp_intr_handler(int irq, void
/* Check device state for handling interrupt */
if (unlikely(lpfc_intr_state_check(phba))) {
+ fpeq->EQ_badstate++;
/* Check again for link_state with lock held */
spin_lock_irqsave(&phba->hbalock, iflag);
if (phba->link_state < LPFC_LINK_DOWN)
@@ -11880,12 +11907,18 @@ lpfc_sli4_fp_intr_handler(int irq, void
lpfc_sli4_fp_handle_eqe(phba, eqe, fcp_eqidx);
if (!(++ecount % fpeq->entry_repost))
lpfc_sli4_eq_release(fpeq, LPFC_QUEUE_NOARM);
+ fpeq->EQ_processed++;
}
+ /* Track the max number of EQEs processed in 1 intr */
+ if (ecount > fpeq->EQ_max_eqe)
+ fpeq->EQ_max_eqe = ecount;
+
/* Always clear and re-arm the fast-path EQ */
lpfc_sli4_eq_release(fpeq, LPFC_QUEUE_REARM);
if (unlikely(ecount == 0)) {
+ fpeq->EQ_no_entry++;
if (phba->intr_type == MSIX)
/* MSI-X treated interrupt served as no EQ share INT */
lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
--
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