blktrace: modify two scripts for python3

Backport from git.kernel.dk.  Changed shebangs to use python3.

(From OE-Core rev: 2c0ca4632f6c2ce645412ca975a70b3088c27916)

Signed-off-by: Joe Slater <joe.slater@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

2 files changed, 198 insertions, 0 deletions

diff --git a/meta/recipes-kernel/blktrace/blktrace/make-btt-scripts-python3-ready.patch b/meta/recipes-kernel/blktrace/blktrace/make-btt-scripts-python3-ready.patch
new file mode 100644
index 0000000000..3b0c1c692c
--- /dev/null
+++ b/meta/recipes-kernel/blktrace/blktrace/make-btt-scripts-python3-ready.patch
@@ -0,0 +1,197 @@
+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)
+ 
diff --git a/meta/recipes-kernel/blktrace/blktrace_git.bb b/meta/recipes-kernel/blktrace/blktrace_git.bb
index 2605ff9167..6903053b5b 100644
--- a/meta/recipes-kernel/blktrace/blktrace_git.bb
+++ b/meta/recipes-kernel/blktrace/blktrace_git.bb
@@ -12,6 +12,7 @@ PV = "1.2.0+git${SRCPV}"
 SRC_URI = "git://git.kernel.dk/blktrace.git \
            file://ldflags.patch \
            file://CVE-2018-10689.patch \
+           file://make-btt-scripts-python3-ready.patch \
 "
 
 S = "${WORKDIR}/git"