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# Copyright 2017 Google, ARM Limited
#
# 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.
#
"""
Definitions of filesystem (ext4) trace parsers
registered by the FTrace class
"""
from trappy.base import Base
from trappy.dynamic import register_ftrace_parser, register_dynamic_ftrace
class FilesystemExt4Base(Base):
def generate_data_dict(self, data_str):
#filesystem traces are space delimited in the form:
#fieldA valueA fieldB valueB ...
data = data_str.split(' ')
return zip(data[0::2], data[1::2])
def finalize_object(self):
self.data_frame.rename(columns={'ino':'inode'}, inplace=True)
class FilesystemExt4DaWriteBegin(FilesystemExt4Base):
"""Corresponds to Linux kernel trace event ext4_da_write_begin"""
unique_word = "ext4_da_write_begin:"
"""The unique word that will be matched in a trace line"""
register_ftrace_parser(FilesystemExt4DaWriteBegin)
class FilesystemExt4DaWriteEnd(FilesystemExt4Base):
"""Corresponds to Linux kernel trace event ext4_da_write_end"""
unique_word = "ext4_da_write_end:"
"""The unique word that will be matched in a trace line"""
register_ftrace_parser(FilesystemExt4DaWriteEnd)
class FilesystemExt4SyncFileEnter(FilesystemExt4Base):
"""Corresponds to Linux kernel trace event ext4_sync_file_enter"""
unique_word = "ext4_sync_file_enter:"
"""The unique word that will be matched in a trace line"""
register_ftrace_parser(FilesystemExt4SyncFileEnter)
class FilesystemExt4SyncFileExit(FilesystemExt4Base):
"""Corresponds to Linux kernel trace event ext4_sync_file_exit"""
unique_word = "ext4_sync_file_exit:"
"""The unique word that will be matched in a trace line"""
register_ftrace_parser(FilesystemExt4SyncFileExit)
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