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#!/usr/bin/env python3
#
# Copyright (C) 2015 The Android Open Source Project
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
import dataclasses
from dataclasses import dataclass
import json
import sys
def gen_event_type_entry_str(event_type_name, event_type, event_config, description='',
limited_arch=''):
return '{"%s", %s, %s, "%s", "%s"},\n' % (
event_type_name, event_type, event_config, description, limited_arch)
def gen_hardware_events():
hardware_configs = ["cpu-cycles",
"instructions",
"cache-references",
"cache-misses",
"branch-instructions",
"branch-misses",
"bus-cycles",
"stalled-cycles-frontend",
"stalled-cycles-backend",
]
generated_str = ""
for config in hardware_configs:
event_type_name = config
event_config = "PERF_COUNT_HW_" + config.replace('-', '_').upper()
generated_str += gen_event_type_entry_str(
event_type_name, "PERF_TYPE_HARDWARE", event_config)
return generated_str
def gen_software_events():
software_configs = ["cpu-clock",
"task-clock",
"page-faults",
"context-switches",
"cpu-migrations",
["minor-faults", "PERF_COUNT_SW_PAGE_FAULTS_MIN"],
["major-faults", "PERF_COUNT_SW_PAGE_FAULTS_MAJ"],
"alignment-faults",
"emulation-faults",
]
generated_str = ""
for config in software_configs:
if isinstance(config, list):
event_type_name = config[0]
event_config = config[1]
else:
event_type_name = config
event_config = "PERF_COUNT_SW_" + config.replace('-', '_').upper()
generated_str += gen_event_type_entry_str(
event_type_name, "PERF_TYPE_SOFTWARE", event_config)
return generated_str
def gen_hw_cache_events():
hw_cache_types = [["L1-dcache", "PERF_COUNT_HW_CACHE_L1D"],
["L1-icache", "PERF_COUNT_HW_CACHE_L1I"],
["LLC", "PERF_COUNT_HW_CACHE_LL"],
["dTLB", "PERF_COUNT_HW_CACHE_DTLB"],
["iTLB", "PERF_COUNT_HW_CACHE_ITLB"],
["branch", "PERF_COUNT_HW_CACHE_BPU"],
["node", "PERF_COUNT_HW_CACHE_NODE"],
]
hw_cache_ops = [["loads", "load", "PERF_COUNT_HW_CACHE_OP_READ"],
["stores", "store", "PERF_COUNT_HW_CACHE_OP_WRITE"],
["prefetches", "prefetch",
"PERF_COUNT_HW_CACHE_OP_PREFETCH"],
]
hw_cache_op_results = [["accesses", "PERF_COUNT_HW_CACHE_RESULT_ACCESS"],
["misses", "PERF_COUNT_HW_CACHE_RESULT_MISS"],
]
generated_str = ""
for (type_name, type_config) in hw_cache_types:
for (op_name_access, op_name_miss, op_config) in hw_cache_ops:
for (result_name, result_config) in hw_cache_op_results:
if result_name == "accesses":
event_type_name = type_name + '-' + op_name_access
else:
event_type_name = type_name + '-' + \
op_name_miss + '-' + result_name
event_config = "((%s) | (%s << 8) | (%s << 16))" % (
type_config, op_config, result_config)
generated_str += gen_event_type_entry_str(
event_type_name, "PERF_TYPE_HW_CACHE", event_config)
return generated_str
@dataclass
class RawEvent:
number: int
name: str
desc: str
limited_arch: str
@dataclass
class CpuModel:
name: str
implementer: int
partnum: int
supported_raw_events: list[int] = dataclasses.field(default_factory=list)
class ArchData:
def __init__(self, arch: str):
self.arch = arch
self.events: List[RawEvent] = []
self.cpus: List[CpuModel] = []
def load_from_json_data(self, data) -> None:
# Load common events
for event in data['events']:
number = int(event[0], 16)
name = 'raw-' + event[1].lower().replace('_', '-')
desc = event[2]
self.events.append(RawEvent(number, name, desc, self.arch))
for cpu in data['cpus']:
cpu_name = cpu['name'].lower().replace('_', '-')
cpu_model = CpuModel(cpu['name'], int(cpu['implementer'], 16),
int(cpu['partnum'], 16), [])
cpu_index = len(self.cpus)
self.cpus.append(cpu_model)
# Load common events supported in this cpu model.
for number in cpu['common_events']:
number = int(number, 16)
event = self.get_event(number)
cpu_model.supported_raw_events.append(number)
# Load cpu specific events supported in this cpu model.
if 'implementation_defined_events' in cpu:
for event in cpu['implementation_defined_events']:
number = int(event[0], 16)
name = ('raw-' + cpu_name + '-' + event[1]).lower().replace('_', '-')
desc = event[2]
limited_arch = self.arch + ':' + cpu['name']
self.events.append(RawEvent(number, name, desc, limited_arch))
cpu_model.supported_raw_events.append(number)
def get_event(self, event_number: int) -> RawEvent:
for event in self.events:
if event.number == event_number:
return event
raise Exception(f'no event for event number {event_number}')
class RawEventGenerator:
def __init__(self, event_table_file: str):
with open(event_table_file, 'r') as fh:
event_table = json.load(fh)
self.arm64_data = ArchData('arm64')
self.arm64_data.load_from_json_data(event_table['arm64'])
def generate_raw_events(self) -> str:
lines = []
for event in self.arm64_data.events:
lines.append(gen_event_type_entry_str(event.name, 'PERF_TYPE_RAW', '0x%x' %
event.number, event.desc, event.limited_arch))
return self.add_arm_guard(''.join(lines))
def generate_cpu_support_events(self) -> str:
text = """
// Map from cpu model to raw events supported on that cpu.',
std::unordered_map<std::string, std::unordered_set<int>> cpu_supported_raw_events = {
"""
lines = []
for cpu in self.arm64_data.cpus:
event_list = ', '.join('0x%x' % number for number in cpu.supported_raw_events)
lines.append('{"%s", {%s}},' % (cpu.name, event_list))
text += self.add_arm_guard('\n'.join(lines))
text += '};\n'
return text
def generate_cpu_models(self) -> str:
text = """
std::unordered_map<uint64_t, std::string> arm64_cpuid_to_name = {
"""
lines = []
for cpu in self.arm64_data.cpus:
cpu_id = (cpu.implementer << 32) | cpu.partnum
lines.append('{0x%xull, "%s"},' % (cpu_id, cpu.name))
text += '\n'.join(lines)
text += '};\n'
return self.add_arm_guard(text)
def add_arm_guard(self, data: str) -> str:
return f'#if defined(__aarch64__) || defined(__arm__)\n{data}\n#endif\n'
def gen_events(event_table_file: str):
generated_str = """
#include <unordered_map>
#include <unordered_set>
#include "event_type.h"
namespace simpleperf {
std::set<EventType> builtin_event_types = {
"""
generated_str += gen_hardware_events() + '\n'
generated_str += gen_software_events() + '\n'
generated_str += gen_hw_cache_events() + '\n'
raw_event_generator = RawEventGenerator(event_table_file)
generated_str += raw_event_generator.generate_raw_events() + '\n'
generated_str += """
};
"""
generated_str += raw_event_generator.generate_cpu_support_events()
generated_str += raw_event_generator.generate_cpu_models()
generated_str += """
} // namespace simpleperf
"""
return generated_str
def main():
event_table_file = sys.argv[1]
output_file = sys.argv[2]
generated_str = gen_events(event_table_file)
with open(output_file, 'w') as fh:
fh.write(generated_str)
if __name__ == '__main__':
main()
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