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From e7cdcd1e39c4c030a32c9e8ef79316eae8555bc8 Mon Sep 17 00:00:00 2001
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From: Stefan Hajnoczi <stefanha@redhat.com>
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Date: Thu, 16 Jan 2020 17:52:48 +0000
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Subject: [PATCH 04/15] trace: update qemu-trace-stap to Python 3
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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RH-Author: Stefan Hajnoczi <stefanha@redhat.com>
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Message-id: <20200116175248.286556-2-stefanha@redhat.com>
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Patchwork-id: 93365
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O-Subject: [RHEL-AV-8.2.0 qemu-kvm PATCH 1/1] trace: update qemu-trace-stap to Python 3
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Bugzilla: 1787395
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RH-Acked-by: John Snow <jsnow@redhat.com>
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RH-Acked-by: Vitaly Kuznetsov <vkuznets@redhat.com>
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RH-Acked-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
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qemu-trace-stap does not support Python 3 yet:
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$ scripts/qemu-trace-stap list path/to/qemu-system-x86_64
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Traceback (most recent call last):
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File "scripts/qemu-trace-stap", line 175, in <module>
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main()
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File "scripts/qemu-trace-stap", line 171, in main
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args.func(args)
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File "scripts/qemu-trace-stap", line 118, in cmd_list
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print_probes(args.verbose, "*")
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File "scripts/qemu-trace-stap", line 114, in print_probes
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if line.startswith(prefix):
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TypeError: startswith first arg must be bytes or a tuple of bytes, not str
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Now that QEMU requires Python 3.5 or later we can switch to pure Python
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3. Use Popen()'s universal_newlines=True argument to treat stdout as
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text instead of binary.
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Fixes: 62dd1048c0bd ("trace: add ability to do simple printf logging via systemtap")
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Buglink: https://bugzilla.redhat.com/show_bug.cgi?id=1787395
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Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
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Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
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Message-id: 20200107112438.383958-1-stefanha@redhat.com
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Message-Id: <20200107112438.383958-1-stefanha@redhat.com>
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Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
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(cherry picked from commit 3f0097169bb60268cc5dda0c5ea47c31ab57b22f)
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Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
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Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
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---
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scripts/qemu-trace-stap | 8 ++++----
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1 file changed, 4 insertions(+), 4 deletions(-)
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diff --git a/scripts/qemu-trace-stap b/scripts/qemu-trace-stap
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index 91d1051..90527eb 100755
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--- a/scripts/qemu-trace-stap
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+++ b/scripts/qemu-trace-stap
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@@ -1,4 +1,4 @@
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-#!/usr/bin/python
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+#!/usr/bin/env python3
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# -*- python -*-
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#
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# Copyright (C) 2019 Red Hat, Inc
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@@ -18,8 +18,6 @@
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, see <http://www.gnu.org/licenses/>.
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-from __future__ import print_function
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-
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import argparse
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import copy
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import os.path
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@@ -104,7 +102,9 @@ def cmd_list(args):
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if verbose:
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print("Listing probes with name '%s'" % script)
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proc = subprocess.Popen(["stap", "-l", script],
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- stdout=subprocess.PIPE, env=tapset_env(tapsets))
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+ stdout=subprocess.PIPE,
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+ universal_newlines=True,
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+ env=tapset_env(tapsets))
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out, err = proc.communicate()
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if proc.returncode != 0:
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print("No probes found, are the tapsets installed in %s" % tapset_dir(args.binary))
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--
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1.8.3.1
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