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vhost: add traces for memory listeners

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Trace these operations on two memory listeners.  It helps to verify the
new memory listener fix, and good to keep them there.

Signed-off-by: Peter Xu <peterx@redhat.com>
Message-Id: <20180122060244.29368-2-peterx@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Peter Xu 2018-01-22 14:02:41 +08:00 committed by Paolo Bonzini
parent d83414e1fd
commit 0750b06021
2 changed files with 13 additions and 0 deletions
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6
hw/virtio/trace-events
View File

@ -25,3 +25,9 @@ virtio_balloon_handle_output(const char *name, uint64_t gpa) "section name: %s g
virtio_balloon_get_config(uint32_t num_pages, uint32_t actual) "num_pages: %d actual: %d"
virtio_balloon_set_config(uint32_t actual, uint32_t oldactual) "actual: %d oldactual: %d"
virtio_balloon_to_target(uint64_t target, uint32_t num_pages) "balloon target: 0x%"PRIx64" num_pages: %d"
# hw/virtio/vhost.c
vhost_region_add(void *p, const char *mr) "dev %p mr %s"
vhost_region_del(void *p, const char *mr) "dev %p mr %s"
vhost_iommu_region_add(void *p, const char *mr) "dev %p mr %s"
vhost_iommu_region_del(void *p, const char *mr) "dev %p mr %s"

7
hw/virtio/vhost.c
View File

@ -27,6 +27,7 @@
#include "hw/virtio/virtio-access.h"
#include "migration/blocker.h"
#include "sysemu/dma.h"
#include "trace.h"
/* enabled until disconnected backend stabilizes */
#define _VHOST_DEBUG 1
@ -687,6 +688,7 @@ static void vhost_region_add(MemoryListener *listener,
return;
}
trace_vhost_region_add(dev, section->mr->name ?: NULL);
++dev->n_mem_sections;
dev->mem_sections = g_renew(MemoryRegionSection, dev->mem_sections,
dev->n_mem_sections);
@ -706,6 +708,7 @@ static void vhost_region_del(MemoryListener *listener,
return;
}
trace_vhost_region_del(dev, section->mr->name ?: NULL);
vhost_set_memory(listener, section, false);
memory_region_unref(section->mr);
for (i = 0; i < dev->n_mem_sections; ++i) {
@ -743,6 +746,8 @@ static void vhost_iommu_region_add(MemoryListener *listener,
return;
}
trace_vhost_iommu_region_add(dev, section->mr->name ?: NULL);
iommu = g_malloc0(sizeof(*iommu));
end = int128_add(int128_make64(section->offset_within_region),
section->size);
@ -771,6 +776,8 @@ static void vhost_iommu_region_del(MemoryListener *listener,
return;
}
trace_vhost_iommu_region_del(dev, section->mr->name ?: NULL);
QLIST_FOREACH(iommu, &dev->iommu_list, iommu_next) {
if (iommu->mr == section->mr &&
iommu->n.start == section->offset_within_region) {