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[PATCH v5 19/21] virtio-mem: Add trace events
From: |
David Hildenbrand |
Subject: |
[PATCH v5 19/21] virtio-mem: Add trace events |
Date: |
Fri, 26 Jun 2020 09:22:46 +0200 |
Let's add some trace events that might come in handy later.
Cc: "Michael S. Tsirkin" <mst@redhat.com>
Cc: "Dr. David Alan Gilbert" <dgilbert@redhat.com>
Signed-off-by: David Hildenbrand <david@redhat.com>
---
hw/virtio/trace-events | 10 ++++++++++
hw/virtio/virtio-mem.c | 10 +++++++++-
2 files changed, 19 insertions(+), 1 deletion(-)
diff --git a/hw/virtio/trace-events b/hw/virtio/trace-events
index 6427a0047d..292fc15e29 100644
--- a/hw/virtio/trace-events
+++ b/hw/virtio/trace-events
@@ -74,3 +74,13 @@ virtio_iommu_get_domain(uint32_t domain_id) "Alloc domain=%d"
virtio_iommu_put_domain(uint32_t domain_id) "Free domain=%d"
virtio_iommu_translate_out(uint64_t virt_addr, uint64_t phys_addr, uint32_t
sid) "0x%"PRIx64" -> 0x%"PRIx64 " for sid=%d"
virtio_iommu_report_fault(uint8_t reason, uint32_t flags, uint32_t endpoint,
uint64_t addr) "FAULT reason=%d flags=%d endpoint=%d address =0x%"PRIx64
+
+# virtio-mem.c
+virtio_mem_send_response(uint16_t type) "type=%" PRIu16
+virtio_mem_plug_request(uint64_t addr, uint16_t nb_blocks) "addr=0x%" PRIx64 "
nb_blocks=%" PRIu16
+virtio_mem_unplug_request(uint64_t addr, uint16_t nb_blocks) "addr=0x%" PRIx64
" nb_blocks=%" PRIu16
+virtio_mem_unplugged_all(void) ""
+virtio_mem_unplug_all_request(void) ""
+virtio_mem_resized_usable_region(uint64_t old_size, uint64_t new_size)
"old_size=0x%" PRIx64 "new_size=0x%" PRIx64
+virtio_mem_state_request(uint64_t addr, uint16_t nb_blocks) "addr=0x%" PRIx64
" nb_blocks=%" PRIu16
+virtio_mem_state_response(uint16_t state) "state=%" PRIu16
diff --git a/hw/virtio/virtio-mem.c b/hw/virtio/virtio-mem.c
index 6ed5409669..fdd4dbb42c 100644
--- a/hw/virtio/virtio-mem.c
+++ b/hw/virtio/virtio-mem.c
@@ -30,6 +30,7 @@
#include "hw/boards.h"
#include "hw/qdev-properties.h"
#include "config-devices.h"
+#include "trace.h"
/*
* Use QEMU_VMALLOC_ALIGN, so no THP will have to be split when unplugging
@@ -100,6 +101,7 @@ static void virtio_mem_send_response(VirtIOMEM *vmem,
VirtQueueElement *elem,
VirtIODevice *vdev = VIRTIO_DEVICE(vmem);
VirtQueue *vq = vmem->vq;
+ trace_virtio_mem_send_response(le16_to_cpu(resp->type));
iov_from_buf(elem->in_sg, elem->in_num, 0, resp, sizeof(*resp));
virtqueue_push(vq, elem, sizeof(*resp));
@@ -195,6 +197,7 @@ static void virtio_mem_plug_request(VirtIOMEM *vmem,
VirtQueueElement *elem,
const uint16_t nb_blocks = le16_to_cpu(req->u.plug.nb_blocks);
uint16_t type;
+ trace_virtio_mem_plug_request(gpa, nb_blocks);
type = virtio_mem_state_change_request(vmem, gpa, nb_blocks, true);
virtio_mem_send_response_simple(vmem, elem, type);
}
@@ -206,6 +209,7 @@ static void virtio_mem_unplug_request(VirtIOMEM *vmem,
VirtQueueElement *elem,
const uint16_t nb_blocks = le16_to_cpu(req->u.unplug.nb_blocks);
uint16_t type;
+ trace_virtio_mem_unplug_request(gpa, nb_blocks);
type = virtio_mem_state_change_request(vmem, gpa, nb_blocks, false);
virtio_mem_send_response_simple(vmem, elem, type);
}
@@ -225,6 +229,7 @@ static void virtio_mem_resize_usable_region(VirtIOMEM *vmem,
return;
}
+ trace_virtio_mem_resized_usable_region(vmem->usable_region_size, newsize);
vmem->usable_region_size = newsize;
}
@@ -247,7 +252,7 @@ static int virtio_mem_unplug_all(VirtIOMEM *vmem)
vmem->size = 0;
notifier_list_notify(&vmem->size_change_notifiers, &vmem->size);
}
-
+ trace_virtio_mem_unplugged_all();
virtio_mem_resize_usable_region(vmem, vmem->requested_size, true);
return 0;
}
@@ -255,6 +260,7 @@ static int virtio_mem_unplug_all(VirtIOMEM *vmem)
static void virtio_mem_unplug_all_request(VirtIOMEM *vmem,
VirtQueueElement *elem)
{
+ trace_virtio_mem_unplug_all_request();
if (virtio_mem_unplug_all(vmem)) {
virtio_mem_send_response_simple(vmem, elem, VIRTIO_MEM_RESP_BUSY);
} else {
@@ -272,6 +278,7 @@ static void virtio_mem_state_request(VirtIOMEM *vmem,
VirtQueueElement *elem,
.type = cpu_to_le16(VIRTIO_MEM_RESP_ACK),
};
+ trace_virtio_mem_state_request(gpa, nb_blocks);
if (!virtio_mem_valid_range(vmem, gpa, size)) {
virtio_mem_send_response_simple(vmem, elem, VIRTIO_MEM_RESP_ERROR);
return;
@@ -284,6 +291,7 @@ static void virtio_mem_state_request(VirtIOMEM *vmem,
VirtQueueElement *elem,
} else {
resp.u.state.state = cpu_to_le16(VIRTIO_MEM_STATE_MIXED);
}
+ trace_virtio_mem_state_response(le16_to_cpu(resp.u.state.state));
virtio_mem_send_response(vmem, elem, &resp);
}
--
2.26.2
- [PATCH v5 08/21] migration/rdma: Use ram_block_discard_disable(), (continued)
- [PATCH v5 08/21] migration/rdma: Use ram_block_discard_disable(), David Hildenbrand, 2020/06/26
- [PATCH v5 10/21] virtio-mem: Paravirtualized memory hot(un)plug, David Hildenbrand, 2020/06/26
- [PATCH v5 11/21] virtio-pci: Proxy for virtio-mem, David Hildenbrand, 2020/06/26
- [PATCH v5 13/21] hmp: Handle virtio-mem when printing memory device info, David Hildenbrand, 2020/06/26
- [PATCH v5 12/21] MAINTAINERS: Add myself as virtio-mem maintainer, David Hildenbrand, 2020/06/26
- [PATCH v5 14/21] numa: Handle virtio-mem in NUMA stats, David Hildenbrand, 2020/06/26
- [PATCH v5 16/21] virtio-mem: Allow notifiers for size changes, David Hildenbrand, 2020/06/26
- [PATCH v5 15/21] pc: Support for virtio-mem-pci, David Hildenbrand, 2020/06/26
- [PATCH v5 17/21] virtio-pci: Send qapi events when the virtio-mem size changes, David Hildenbrand, 2020/06/26
- [PATCH v5 18/21] virtio-mem: Migration sanity checks, David Hildenbrand, 2020/06/26
- [PATCH v5 19/21] virtio-mem: Add trace events,
David Hildenbrand <=
- [PATCH v5 20/21] virtio-mem: Exclude unplugged memory during migration, David Hildenbrand, 2020/06/26
- [PATCH v5 21/21] numa: Auto-enable NUMA when any memory devices are possible, David Hildenbrand, 2020/06/26