diff options
| author | Peter Xu <peterx@redhat.com> | 2021-05-17 04:23:50 -0400 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2021-05-26 14:49:46 +0200 |
| commit | b4420f198dd8eab53cf6062c1871d0e5f5601e86 (patch) | |
| tree | ff96a5909b465cc9edec20e9ac27e14d4ab9d3e6 /accel/kvm/trace-events | |
| parent | a81a592698c5cf3d84486b00c84b7979dfa0a3da (diff) | |
KVM: Dirty ring support
KVM dirty ring is a new interface to pass over dirty bits from kernel to the
userspace. Instead of using a bitmap for each memory region, the dirty ring
contains an array of dirtied GPAs to fetch (in the form of offset in slots).
For each vcpu there will be one dirty ring that binds to it.
kvm_dirty_ring_reap() is the major function to collect dirty rings. It can be
called either by a standalone reaper thread that runs in the background,
collecting dirty pages for the whole VM. It can also be called directly by any
thread that has BQL taken.
Signed-off-by: Peter Xu <peterx@redhat.com>
Message-Id: <20210506160549.130416-11-peterx@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'accel/kvm/trace-events')
| -rw-r--r-- | accel/kvm/trace-events | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/accel/kvm/trace-events b/accel/kvm/trace-events index e15ae8980d..72a01320a1 100644 --- a/accel/kvm/trace-events +++ b/accel/kvm/trace-events @@ -18,4 +18,11 @@ kvm_set_ioeventfd_pio(int fd, uint16_t addr, uint32_t val, bool assign, uint32_t kvm_set_user_memory(uint32_t slot, uint32_t flags, uint64_t guest_phys_addr, uint64_t memory_size, uint64_t userspace_addr, int ret) "Slot#%d flags=0x%x gpa=0x%"PRIx64 " size=0x%"PRIx64 " ua=0x%"PRIx64 " ret=%d" kvm_clear_dirty_log(uint32_t slot, uint64_t start, uint32_t size) "slot#%"PRId32" start 0x%"PRIx64" size 0x%"PRIx32 kvm_resample_fd_notify(int gsi) "gsi %d" +kvm_dirty_ring_full(int id) "vcpu %d" +kvm_dirty_ring_reap_vcpu(int id) "vcpu %d" +kvm_dirty_ring_page(int vcpu, uint32_t slot, uint64_t offset) "vcpu %d fetch %"PRIu32" offset 0x%"PRIx64 +kvm_dirty_ring_reaper(const char *s) "%s" +kvm_dirty_ring_reap(uint64_t count, int64_t t) "reaped %"PRIu64" pages (took %"PRIi64" us)" +kvm_dirty_ring_reaper_kick(const char *reason) "%s" +kvm_dirty_ring_flush(int finished) "%d" |