# 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 = ""
|
print_delim = 0
|
|
for idx in trace_flags:
|
if not value and not idx:
|
string += "NONE"
|
break
|
|
if idx and (value & idx) == idx:
|
if print_delim:
|
string += " | ";
|
string += trace_flags[idx]
|
print_delim = 1
|
value &= ~idx
|
|
return string
|
|
|
def taskState(state):
|
states = {
|
0 : "R",
|
1 : "S",
|
2 : "D",
|
64: "DEAD"
|
}
|
|
if state not in states:
|
return "Unknown"
|
|
return states[state]
|
|
|
class EventHeaders:
|
def __init__(self, common_cpu, common_secs, common_nsecs,
|
common_pid, common_comm, common_callchain):
|
self.cpu = common_cpu
|
self.secs = common_secs
|
self.nsecs = common_nsecs
|
self.pid = common_pid
|
self.comm = common_comm
|
self.callchain = common_callchain
|
|
def ts(self):
|
return (self.secs * (10 ** 9)) + self.nsecs
|
|
def ts_format(self):
|
return "%d.%d" % (self.secs, int(self.nsecs / 1000))
|
