--- /dev/null
+From 70d5ca2d5f3d6b97c11c641b7e0c5836983219a0 Mon Sep 17 00:00:00 2001
+From: Eric Sandeen <sandeen@redhat.com>
+Date: Wed, 28 Mar 2018 15:26:36 -0500
+Subject: [oe-core][PATCH 1/1] make btt scripts python3-ready
+
+Many distributions are moving to python3 by default. Here's
+an attempt to make the python scripts in blktrace python3-ready.
+
+Most of this was done with automated tools. I hand fixed some
+space-vs tab issues, and cast an array index to integer. It
+passes rudimentary testing when run under python2.7 as well
+as python3.
+
+This doesn't do anything with the shebangs, it leaves them both
+invoking whatever "env python" coughs up on the system.
+
+Signed-off-by: Eric Sandeen <sandeen@redhat.com>
+Signed-off-by: Jens Axboe <axboe@kernel.dk>
+
+Unchanged except to modify shebangs to use python3 since
+oe-core does not support python2 anymore.
+
+Upstream-Status: Backport [git://git.kernel.dk/blktrace.git commit 70d5ca2d5...]
+
+Signed-off-by: Joe Slater <joe.slater@windriver.com>
+
+---
+ btt/bno_plot.py | 28 +++++++++++++++-------------
+ btt/btt_plot.py | 22 +++++++++++++---------
+ 2 files changed, 28 insertions(+), 22 deletions(-)
+
+--- git.orig/btt/bno_plot.py
++++ git/btt/bno_plot.py
+@@ -1,4 +1,4 @@
+-#! /usr/bin/env python
++#! /usr/bin/env python3
+ #
+ # btt blkno plotting interface
+ #
+@@ -38,6 +38,8 @@ automatically push the keys under the gr
+ To exit the plotter, enter 'quit' or ^D at the 'gnuplot> ' prompt.
+ """
+
++from __future__ import absolute_import
++from __future__ import print_function
+ import getopt, glob, os, sys, tempfile
+
+ verbose = 0
+@@ -60,14 +62,14 @@ def parse_args(in_args):
+
+ try:
+ (opts, args) = getopt.getopt(in_args, s_opts, l_opts)
+- except getopt.error, msg:
+- print >>sys.stderr, msg
+- print >>sys.stderr, __doc__
++ except getopt.error as msg:
++ print(msg, file=sys.stderr)
++ print(__doc__, file=sys.stderr)
+ sys.exit(1)
+
+ for (o, a) in opts:
+ if o in ('-h', '--help'):
+- print __doc__
++ print(__doc__)
+ sys.exit(0)
+ elif o in ('-v', '--verbose'):
+ verbose += 1
+@@ -84,10 +86,10 @@ if __name__ == '__main__':
+ (bnos, keys_below) = parse_args(sys.argv[1:])
+
+ if verbose:
+- print 'Using files:',
+- for bno in bnos: print bno,
+- if keys_below: print '\nKeys are to be placed below graph'
+- else: print ''
++ print('Using files:', end=' ')
++ for bno in bnos: print(bno, end=' ')
++ if keys_below: print('\nKeys are to be placed below graph')
++ else: print('')
+
+ tmpdir = tempfile.mktemp()
+ os.mkdir(tmpdir)
+@@ -99,7 +101,7 @@ if __name__ == '__main__':
+ fo = open(t, 'w')
+ for line in open(f, 'r'):
+ fld = line.split(None)
+- print >>fo, fld[0], fld[1], int(fld[2])-int(fld[1])
++ print(fld[0], fld[1], int(fld[2])-int(fld[1]), file=fo)
+ fo.close()
+
+ t = t[t.rfind('/')+1:]
+@@ -107,16 +109,16 @@ if __name__ == '__main__':
+ else: plot_cmd = "%s,'%s'" % (plot_cmd, t)
+
+ fo = open('%s/plot.cmds' % tmpdir, 'w')
+- print >>fo, cmds
+- if len(bnos) > 10 or keys_below: print >>fo, 'set key below'
+- print >>fo, plot_cmd
++ print(cmds, file=fo)
++ if len(bnos) > 10 or keys_below: print('set key below', file=fo)
++ print(plot_cmd, file=fo)
+ fo.close()
+
+ pid = os.fork()
+ if pid == 0:
+ cmd = 'gnuplot %s/plot.cmds -' % tmpdir
+
+- if verbose: print 'Executing %s' % cmd
++ if verbose: print('Executing %s' % cmd)
+
+ os.chdir(tmpdir)
+ os.system(cmd)
+--- git.orig/btt/btt_plot.py
++++ git/btt/btt_plot.py
+@@ -1,4 +1,4 @@
+-#! /usr/bin/env python
++#! /usr/bin/env python3
+ #
+ # btt_plot.py: Generate matplotlib plots for BTT generate data files
+ #
+@@ -55,6 +55,10 @@ Arguments:
+ but the -o (--output) and -T (--title) options will be ignored.
+ """
+
++from __future__ import absolute_import
++from __future__ import print_function
++import six
++from six.moves import range
+ __author__ = 'Alan D. Brunelle <alan.brunelle@hp.com>'
+
+ #------------------------------------------------------------------------------
+@@ -82,7 +86,7 @@ get_base = lambda file: file[file.find(
+ def fatal(msg):
+ """Generate fatal error message and exit"""
+
+- print >>sys.stderr, 'FATAL: %s' % msg
++ print('FATAL: %s' % msg, file=sys.stderr)
+ sys.exit(1)
+
+ #------------------------------------------------------------------------------
+@@ -163,7 +167,7 @@ def get_data(files):
+ if not os.path.exists(file):
+ fatal('%s not found' % file)
+ elif verbose:
+- print 'Processing %s' % file
++ print('Processing %s' % file)
+
+ xs = []
+ ys = []
+@@ -214,8 +218,8 @@ def parse_args(args):
+
+ try:
+ (opts, args) = getopt.getopt(args[1:], s_opts, l_opts)
+- except getopt.error, msg:
+- print >>sys.stderr, msg
++ except getopt.error as msg:
++ print(msg, file=sys.stderr)
+ fatal(__doc__)
+
+ for (o, a) in opts:
+@@ -293,15 +297,15 @@ def generate_output(type, db):
+ def color(idx, style):
+ """Returns a color/symbol type based upon the index passed."""
+
+- colors = [ 'b', 'g', 'r', 'c', 'm', 'y', 'k' ]
++ colors = [ 'b', 'g', 'r', 'c', 'm', 'y', 'k' ]
+ l_styles = [ '-', ':', '--', '-.' ]
+ m_styles = [ 'o', '+', '.', ',', 's', 'v', 'x', '<', '>' ]
+
+ color = colors[idx % len(colors)]
+ if style == 'line':
+- style = l_styles[(idx / len(l_styles)) % len(l_styles)]
++ style = l_styles[int((idx / len(l_styles)) % len(l_styles))]
+ elif style == 'marker':
+- style = m_styles[(idx / len(m_styles)) % len(m_styles)]
++ style = m_styles[int((idx / len(m_styles)) % len(m_styles))]
+
+ return '%s%s' % (color, style)
+
+@@ -314,7 +318,7 @@ def generate_output(type, db):
+ ofile = '%s.png' % type
+
+ if verbose:
+- print 'Generating plot into %s' % ofile
++ print('Generating plot into %s' % ofile)
+
+ fig = plt.figure(figsize=plot_size)
+ ax = fig.add_subplot(111)
+@@ -329,7 +333,7 @@ def generate_output(type, db):
+ legends = None
+
+ keys = []
+- for file in db.iterkeys():
++ for file in six.iterkeys(db):
+ if not file in ['min_x', 'max_x', 'min_y', 'max_y']:
+ keys.append(file)
+
