Edit File: pfaults.stp
#!/usr/bin/stap global fault_entry_time, fault_address, fault_access global time_offset probe begin { time_offset = gettimeofday_us() } probe vm.pagefault { t = gettimeofday_us() fault_entry_time[tid()] = t fault_address[tid()] = address fault_access[tid()] = write_access ? "w" : "r" } probe vm.pagefault.return { t=gettimeofday_us() if (!(tid() in fault_entry_time)) next e = t - fault_entry_time[tid()] if (vm_fault_contains(fault_type,VM_FAULT_MINOR)) { ftype="minor" } else if (vm_fault_contains(fault_type,VM_FAULT_MAJOR)) { ftype="major" } else { next #only want to deal with minor and major page faults } printf("%d:%d:%id:%s:%s:%d\n", t - time_offset, tid(), fault_address[tid()], fault_access[tid()], ftype, e) #free up memory delete fault_entry_time[tid()] delete fault_address[tid()] delete fault_access[tid()] }