tools/perf/scripts/python/Perf-Trace-Util/lib/Perf/Trace/Core.py

Source file repositories/reference/linux-study-clean/tools/perf/scripts/python/Perf-Trace-Util/lib/Perf/Trace/Core.py

File Facts

System
Linux kernel
Corpus path
tools/perf/scripts/python/Perf-Trace-Util/lib/Perf/Trace/Core.py
Extension
.py
Size
3310 bytes
Lines
117
Domain
Support Tooling And Documentation
Bucket
tools
Inferred role
Support Tooling And Documentation: tools
Status
atlas-only

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

Dependency Surface

Detected Declarations

Annotated Snippet

# Core.py - Python extension for perf script, core functions
#
# Copyright (C) 2010 by Tom Zanussi <tzanussi@gmail.com>
#
# This software may be distributed under the terms of the GNU General
# Public License ("GPL") version 2 as published by the Free Software
# Foundation.

from collections import defaultdict

def autodict():
    return defaultdict(autodict)

flag_fields = autodict()
symbolic_fields = autodict()

def define_flag_field(event_name, field_name, delim):
    flag_fields[event_name][field_name]['delim'] = delim

def define_flag_value(event_name, field_name, value, field_str):
    flag_fields[event_name][field_name]['values'][value] = field_str

def define_symbolic_field(event_name, field_name):
    # nothing to do, really
    pass

def define_symbolic_value(event_name, field_name, value, field_str):
    symbolic_fields[event_name][field_name]['values'][value] = field_str

def flag_str(event_name, field_name, value):
    string = ""

    if flag_fields[event_name][field_name]:
        print_delim = 0
        for idx in sorted(flag_fields[event_name][field_name]['values']):
            if not value and not idx:
                string += flag_fields[event_name][field_name]['values'][idx]
                break
            if idx and (value & idx) == idx:
                if print_delim and flag_fields[event_name][field_name]['delim']:
                    string += " " + flag_fields[event_name][field_name]['delim'] + " "
                string += flag_fields[event_name][field_name]['values'][idx]
                print_delim = 1
                value &= ~idx

    return string

def symbol_str(event_name, field_name, value):
    string = ""

    if symbolic_fields[event_name][field_name]:
        for idx in sorted(symbolic_fields[event_name][field_name]['values']):
            if not value and not idx:
                string = symbolic_fields[event_name][field_name]['values'][idx]
                break
            if (value == idx):
                string = symbolic_fields[event_name][field_name]['values'][idx]
                break

    return string

trace_flags = { 0x00: "NONE", \
                    0x01: "IRQS_OFF", \
                    0x02: "IRQS_NOSUPPORT", \
                    0x04: "NEED_RESCHED", \
                    0x08: "HARDIRQ", \
                    0x10: "SOFTIRQ" }

def trace_flag_str(value):
    string = ""

Annotation

Implementation Notes