[PATCH] hw/nvme: add trace events for ioeventfd

[Klaus Jensen <its@irrelevant.dk>]

From: Klaus Jensen <k.jensen@samsung.com>

While testing Jinhaos ioeventfd patch I found it useful with a couple of
additional trace events since we no longer see the mmio events.

Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
---
 hw/nvme/ctrl.c       | 8 ++++++++
 hw/nvme/trace-events | 4 ++++
 2 files changed, 12 insertions(+)

diff --git a/hw/nvme/ctrl.c b/hw/nvme/ctrl.c
index 533ad14e7a61..09725ec49c5d 100644
--- a/hw/nvme/ctrl.c
+++ b/hw/nvme/ctrl.c
@@ -1346,6 +1346,8 @@ static void nvme_post_cqes(void *opaque)
     bool pending = cq->head != cq->tail;
     int ret;
 
+    trace_pci_nvme_post_cqes(cq->cqid);
+
     QTAILQ_FOREACH_SAFE(req, &cq->req_list, entry, next) {
         NvmeSQueue *sq;
         hwaddr addr;
@@ -4238,6 +4240,8 @@ static void nvme_cq_notifier(EventNotifier *e)
     NvmeCQueue *cq = container_of(e, NvmeCQueue, notifier);
     NvmeCtrl *n = cq->ctrl;
 
+    trace_pci_nvme_cq_notify(cq->cqid);
+
     event_notifier_test_and_clear(&cq->notifier);
 
     nvme_update_cq_head(cq);
@@ -4275,6 +4279,8 @@ static void nvme_sq_notifier(EventNotifier *e)
 {
     NvmeSQueue *sq = container_of(e, NvmeSQueue, notifier);
 
+    trace_pci_nvme_sq_notify(sq->sqid);
+
     event_notifier_test_and_clear(&sq->notifier);
 
     nvme_process_sq(sq);
@@ -6240,6 +6246,8 @@ static void nvme_process_sq(void *opaque)
     NvmeCtrl *n = sq->ctrl;
     NvmeCQueue *cq = n->cq[sq->cqid];
 
+    trace_pci_nvme_process_sq(sq->sqid);
+
     uint16_t status;
     hwaddr addr;
     NvmeCmd cmd;
diff --git a/hw/nvme/trace-events b/hw/nvme/trace-events
index fccb79f48973..45dd708bd2fa 100644
--- a/hw/nvme/trace-events
+++ b/hw/nvme/trace-events
@@ -104,6 +104,10 @@ pci_nvme_mmio_shutdown_set(void) "shutdown bit set"
 pci_nvme_mmio_shutdown_cleared(void) "shutdown bit cleared"
 pci_nvme_shadow_doorbell_cq(uint16_t cqid, uint16_t new_shadow_doorbell) "cqid %"PRIu16" new_shadow_doorbell %"PRIu16""
 pci_nvme_shadow_doorbell_sq(uint16_t sqid, uint16_t new_shadow_doorbell) "sqid %"PRIu16" new_shadow_doorbell %"PRIu16""
+pci_nvme_sq_notify(uint16_t sqid) "sqid %"PRIu16""
+pci_nvme_cq_notify(uint16_t cqid) "cqid %"PRIu16""
+pci_nvme_process_sq(uint16_t sqid) "sqid %"PRIu16""
+pci_nvme_post_cqes(uint16_t cqid) "cqid %"PRIu16""
 pci_nvme_open_zone(uint64_t slba, uint32_t zone_idx, int all) "open zone, slba=%"PRIu64", idx=%"PRIu32", all=%"PRIi32""
 pci_nvme_close_zone(uint64_t slba, uint32_t zone_idx, int all) "close zone, slba=%"PRIu64", idx=%"PRIu32", all=%"PRIi32""
 pci_nvme_finish_zone(uint64_t slba, uint32_t zone_idx, int all) "finish zone, slba=%"PRIu64", idx=%"PRIu32", all=%"PRIi32""
-- 
2.36.1