From 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 Mon Sep 17 00:00:00 2001
From: Yunhong Jiang <yunhong.jiang@intel.com>
Date: Tue, 4 Aug 2015 12:17:53 -0700
Subject: Add the rt linux 4.1.3-rt3 as base

Import the rt linux 4.1.3-rt3 as OPNFV kvm base.

It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:

commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date:   Sat Jul 25 12:13:34 2015 +0200

    Prepare v4.1.3-rt3

    Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>

We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.

Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
---
 kernel/scripts/show_delta | 128 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 128 insertions(+)
 create mode 100755 kernel/scripts/show_delta

(limited to 'kernel/scripts/show_delta')

diff --git a/kernel/scripts/show_delta b/kernel/scripts/show_delta
new file mode 100755
index 000000000..5b365009e
--- /dev/null
+++ b/kernel/scripts/show_delta
@@ -0,0 +1,128 @@
+#!/usr/bin/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()
-- 
cgit 1.2.3-korg