71378be91f
Make it executable like it should be. Do the same for other files intended to be executed by the user - the ones called by the build process needn't be executable as they already work (as argument to their interpreter). Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
130 lines
3.0 KiB
Python
Executable File
130 lines
3.0 KiB
Python
Executable File
#!/usr/bin/env python
|
|
#
|
|
# show_deltas: Read list of printk messages instrumented with
|
|
# time data, and format with time deltas.
|
|
#
|
|
# Also, you can show the times relative to a fixed point.
|
|
#
|
|
# Copyright 2003 Sony Corporation
|
|
#
|
|
# GPL 2.0 applies.
|
|
|
|
import sys
|
|
import string
|
|
|
|
def usage():
|
|
print """usage: show_delta [<options>] <filename>
|
|
|
|
This program parses the output from a set of printk message lines which
|
|
have time data prefixed because the CONFIG_PRINTK_TIME option is set, or
|
|
the kernel command line option "time" is specified. When run with no
|
|
options, the time information is converted to show the time delta between
|
|
each printk line and the next. When run with the '-b' option, all times
|
|
are relative to a single (base) point in time.
|
|
|
|
Options:
|
|
-h Show this usage help.
|
|
-b <base> Specify a base for time references.
|
|
<base> can be a number or a string.
|
|
If it is a string, the first message line
|
|
which matches (at the beginning of the
|
|
line) is used as the time reference.
|
|
|
|
ex: $ dmesg >timefile
|
|
$ show_delta -b NET4 timefile
|
|
|
|
will show times relative to the line in the kernel output
|
|
starting with "NET4".
|
|
"""
|
|
sys.exit(1)
|
|
|
|
# returns a tuple containing the seconds and text for each message line
|
|
# seconds is returned as a float
|
|
# raise an exception if no timing data was found
|
|
def get_time(line):
|
|
if line[0]!="[":
|
|
raise ValueError
|
|
|
|
# split on closing bracket
|
|
(time_str, rest) = string.split(line[1:],']',1)
|
|
time = string.atof(time_str)
|
|
|
|
#print "time=", time
|
|
return (time, rest)
|
|
|
|
|
|
# average line looks like:
|
|
# [ 0.084282] VFS: Mounted root (romfs filesystem) readonly
|
|
# time data is expressed in seconds.useconds,
|
|
# convert_line adds a delta for each line
|
|
last_time = 0.0
|
|
def convert_line(line, base_time):
|
|
global last_time
|
|
|
|
try:
|
|
(time, rest) = get_time(line)
|
|
except:
|
|
# if any problem parsing time, don't convert anything
|
|
return line
|
|
|
|
if base_time:
|
|
# show time from base
|
|
delta = time - base_time
|
|
else:
|
|
# just show time from last line
|
|
delta = time - last_time
|
|
last_time = time
|
|
|
|
return ("[%5.6f < %5.6f >]" % (time, delta)) + rest
|
|
|
|
def main():
|
|
base_str = ""
|
|
filein = ""
|
|
for arg in sys.argv[1:]:
|
|
if arg=="-b":
|
|
base_str = sys.argv[sys.argv.index("-b")+1]
|
|
elif arg=="-h":
|
|
usage()
|
|
else:
|
|
filein = arg
|
|
|
|
if not filein:
|
|
usage()
|
|
|
|
try:
|
|
lines = open(filein,"r").readlines()
|
|
except:
|
|
print "Problem opening file: %s" % filein
|
|
sys.exit(1)
|
|
|
|
if base_str:
|
|
print 'base= "%s"' % base_str
|
|
# assume a numeric base. If that fails, try searching
|
|
# for a matching line.
|
|
try:
|
|
base_time = float(base_str)
|
|
except:
|
|
# search for line matching <base> string
|
|
found = 0
|
|
for line in lines:
|
|
try:
|
|
(time, rest) = get_time(line)
|
|
except:
|
|
continue
|
|
if string.find(rest, base_str)==1:
|
|
base_time = time
|
|
found = 1
|
|
# stop at first match
|
|
break
|
|
if not found:
|
|
print 'Couldn\'t find line matching base pattern "%s"' % base_str
|
|
sys.exit(1)
|
|
else:
|
|
base_time = 0.0
|
|
|
|
for line in lines:
|
|
print convert_line(line, base_time),
|
|
|
|
main()
|
|
|