It can help to identify which step is slow for migration dirty sync process. We have migration_bitmap_sync_* trace events but it's still a bit coarse.
This should help us to cut migration_bitmap_sync() into finer grained small steps when measurement is needed. Please review, thanks. Peter Xu (2): memory: Name all the memory listeners memory: Add tracepoint for dirty sync accel/hvf/hvf-accel-ops.c | 1 + accel/kvm/kvm-all.c | 7 +++++-- hw/i386/xen/xen-hvm.c | 2 ++ hw/intc/openpic_kvm.c | 1 + hw/remote/proxy-memory-listener.c | 1 + hw/vfio/common.c | 1 + hw/vfio/spapr.c | 1 + hw/virtio/vhost-vdpa.c | 1 + hw/virtio/vhost.c | 2 ++ hw/virtio/virtio.c | 1 + hw/xen/xen_pt.c | 2 ++ include/exec/memory.h | 8 ++++++++ include/sysemu/kvm_int.h | 2 +- softmmu/memory.c | 2 ++ softmmu/physmem.c | 1 + softmmu/trace-events | 1 + target/arm/kvm.c | 1 + target/i386/hax/hax-mem.c | 1 + target/i386/kvm/kvm.c | 2 +- target/i386/nvmm/nvmm-all.c | 1 + target/i386/whpx/whpx-all.c | 1 + 21 files changed, 36 insertions(+), 4 deletions(-) -- 2.31.1
