diff options
Diffstat (limited to 'configs/common/CpuConfig.py')
| -rw-r--r-- | configs/common/CpuConfig.py | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/configs/common/CpuConfig.py b/configs/common/CpuConfig.py index 6b530623d..3220acecd 100644 --- a/configs/common/CpuConfig.py +++ b/configs/common/CpuConfig.py @@ -53,6 +53,7 @@ _cpu_aliases_all = [ ("minor", "MinorCPU"), ("detailed", "DerivO3CPU"), ("kvm", ("ArmKvmCPU", "ArmV8KvmCPU", "X86KvmCPU")), + ("trace", "TraceCPU"), ] # Filtered list of aliases. Only aliases for existing CPUs exist in @@ -108,6 +109,30 @@ def cpu_names(): """Return a list of valid CPU names.""" return _cpu_classes.keys() + _cpu_aliases.keys() +def config_etrace(cpu_cls, cpu_list, options): + if issubclass(cpu_cls, m5.objects.DerivO3CPU): + # Assign the same file name to all cpus for now. This must be + # revisited when creating elastic traces for multi processor systems. + for cpu in cpu_list: + # Attach the elastic trace probe listener. Set the protobuf trace + # file names. Set the dependency window size equal to the cpu it + # is attached to. + cpu.traceListener = m5.objects.ElasticTrace( + instFetchTraceFile = options.inst_trace_file, + dataDepTraceFile = options.data_trace_file, + depWindowSize = 3 * cpu.numROBEntries) + # Make the number of entries in the ROB, LQ and SQ very + # large so that there are no stalls due to resource + # limitation as such stalls will get captured in the trace + # as compute delay. For replay, ROB, LQ and SQ sizes are + # modelled in the Trace CPU. + cpu.numROBEntries = 512; + cpu.LQEntries = 128; + cpu.SQEntries = 128; + else: + fatal("%s does not support data dependency tracing. Use a CPU model of" + " type or inherited from DerivO3CPU.", cpu_cls) + # The ARM detailed CPU is special in the sense that it doesn't exist # in the normal object hierarchy, so we have to add it manually. try: |