From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:51467) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1e9UhY-0004cw-F4 for qemu-devel@nongnu.org; Tue, 31 Oct 2017 07:27:25 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1e9UhX-0001NB-Gd for qemu-devel@nongnu.org; Tue, 31 Oct 2017 07:27:24 -0400 Received: from mail.ispras.ru ([83.149.199.45]:45564) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1e9UhX-0001MT-5y for qemu-devel@nongnu.org; Tue, 31 Oct 2017 07:27:23 -0400 From: Pavel Dovgalyuk Date: Tue, 31 Oct 2017 14:27:23 +0300 Message-ID: <20171031112723.10516.89734.stgit@pasha-VirtualBox> In-Reply-To: <20171031112457.10516.8971.stgit@pasha-VirtualBox> References: <20171031112457.10516.8971.stgit@pasha-VirtualBox> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Subject: [Qemu-devel] [RFC PATCH 26/26] scripts/qemu-gdb/timers.py: new helper to dump timer state List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: kwolf@redhat.com, peter.maydell@linaro.org, boost.lists@gmail.com, quintela@redhat.com, jasowang@redhat.com, mst@redhat.com, zuban32s@gmail.com, maria.klimushenkova@ispras.ru, dovgaluk@ispras.ru, kraxel@redhat.com, pavel.dovgaluk@ispras.ru, pbonzini@redhat.com, alex.bennee@linaro.org From: Alex Benn=C3=A9e This introduces the qemu-gdb command "qemu timers" which will dump the state of the main timers in the system. Signed-off-by: Alex Benn=C3=A9e Reviewed-by: Philippe Mathieu-Daud=C3=A9 --- scripts/qemu-gdb.py | 3 ++- scripts/qemugdb/timers.py | 54 +++++++++++++++++++++++++++++++++++++++= ++++++ 2 files changed, 56 insertions(+), 1 deletion(-) create mode 100644 scripts/qemugdb/timers.py diff --git a/scripts/qemu-gdb.py b/scripts/qemu-gdb.py index d58213e..690827e 100644 --- a/scripts/qemu-gdb.py +++ b/scripts/qemu-gdb.py @@ -26,7 +26,7 @@ import os, sys =20 sys.path.append(os.path.dirname(__file__)) =20 -from qemugdb import aio, mtree, coroutine, tcg +from qemugdb import aio, mtree, coroutine, tcg, timers =20 class QemuCommand(gdb.Command): '''Prefix for QEMU debug support commands''' @@ -39,6 +39,7 @@ coroutine.CoroutineCommand() mtree.MtreeCommand() aio.HandlersCommand() tcg.TCGLockStatusCommand() +timers.TimersCommand() =20 coroutine.CoroutineSPFunction() coroutine.CoroutinePCFunction() diff --git a/scripts/qemugdb/timers.py b/scripts/qemugdb/timers.py new file mode 100644 index 0000000..be71a00 --- /dev/null +++ b/scripts/qemugdb/timers.py @@ -0,0 +1,54 @@ +#!/usr/bin/python +# GDB debugging support +# +# Copyright 2017 Linaro Ltd +# +# Author: Alex Benn=C3=A9e +# +# This work is licensed under the terms of the GNU GPL, version 2. See +# the COPYING file in the top-level directory. + +# 'qemu timers' -- display the current timerlists + +import gdb + +class TimersCommand(gdb.Command): + '''Display the current QEMU timers''' + + def __init__(self): + 'Register the class as a gdb command' + gdb.Command.__init__(self, 'qemu timers', gdb.COMMAND_DATA, + gdb.COMPLETE_NONE) + + def dump_timers(self, timer): + "Follow a timer and recursively dump each one in the list." + # timer should be of type QemuTimer + gdb.write(" timer %s/%s (cb:%s,opq:%s)\n" % ( + timer['expire_time'], + timer['scale'], + timer['cb'], + timer['opaque'])) + + if int(timer['next']) > 0: + self.dump_timers(timer['next']) + + + def process_timerlist(self, tlist, ttype): + gdb.write("Processing %s timers\n" % (ttype)) + gdb.write(" clock %s is enabled:%s, last:%s\n" % ( + tlist['clock']['type'], + tlist['clock']['enabled'], + tlist['clock']['last'])) + if int(tlist['active_timers']) > 0: + self.dump_timers(tlist['active_timers']) + + + def invoke(self, arg, from_tty): + 'Run the command' + main_timers =3D gdb.parse_and_eval("main_loop_tlg") + + # This will break if QEMUClockType in timer.h is redfined + self.process_timerlist(main_timers['tl'][0], "Realtime") + self.process_timerlist(main_timers['tl'][1], "Virtual") + self.process_timerlist(main_timers['tl'][2], "Host") + self.process_timerlist(main_timers['tl'][3], "Virtual RT")