performance: 0.745
debug: 0.733
device: 0.698
KVM: 0.365
vnc: 0.315
semantic: 0.309
boot: 0.200
graphic: 0.167
PID: 0.128
network: 0.113
other: 0.088
permissions: 0.048
socket: 0.032
files: 0.007

source code of function trace_memory_region_ops_write()