From e02cda008591317b1625707ff8e115a4841aa889 Mon Sep 17 00:00:00 2001 From: Timos Ampelikiotis Date: Tue, 10 Oct 2023 11:40:56 +0000 Subject: Introduce Virtio-loopback epsilon release: Epsilon release introduces a new compatibility layer which make virtio-loopback design to work with QEMU and rust-vmm vhost-user backend without require any changes. Signed-off-by: Timos Ampelikiotis Change-Id: I52e57563e08a7d0bdc002f8e928ee61ba0c53dd9 --- scripts/tracetool/vcpu.py | 69 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 69 insertions(+) create mode 100644 scripts/tracetool/vcpu.py (limited to 'scripts/tracetool/vcpu.py') diff --git a/scripts/tracetool/vcpu.py b/scripts/tracetool/vcpu.py new file mode 100644 index 000000000..868b4cb04 --- /dev/null +++ b/scripts/tracetool/vcpu.py @@ -0,0 +1,69 @@ +# -*- coding: utf-8 -*- + +""" +Generic management for the 'vcpu' property. + +""" + +__author__ = "Lluís Vilanova " +__copyright__ = "Copyright 2016, Lluís Vilanova " +__license__ = "GPL version 2 or (at your option) any later version" + +__maintainer__ = "Stefan Hajnoczi" +__email__ = "stefanha@redhat.com" + + +from tracetool import Arguments, try_import + + +def transform_event(event): + """Transform event to comply with the 'vcpu' property (if present).""" + if "vcpu" in event.properties: + # events with 'tcg-trans' and 'tcg-exec' are auto-generated from + # already-patched events + assert "tcg-trans" not in event.properties + assert "tcg-exec" not in event.properties + + event.args = Arguments([("void *", "__cpu"), event.args]) + if "tcg" in event.properties: + fmt = "\"cpu=%p \"" + event.fmt = [fmt + event.fmt[0], + fmt + event.fmt[1]] + else: + fmt = "\"cpu=%p \"" + event.fmt = fmt + event.fmt + return event + + +def transform_args(format, event, *args, **kwargs): + """Transforms the arguments to suit the specified format. + + The format module must implement function 'vcpu_args', which receives the + implicit arguments added by the 'vcpu' property, and must return suitable + arguments for the given format. + + The function is only called for events with the 'vcpu' property. + + Parameters + ========== + format : str + Format module name. + event : Event + args, kwargs + Passed to 'vcpu_transform_args'. + + Returns + ======= + Arguments + The transformed arguments, including the non-implicit ones. + + """ + if "vcpu" in event.properties: + ok, func = try_import("tracetool.format." + format, + "vcpu_transform_args") + assert ok + assert func + return Arguments([func(event.args[:1], *args, **kwargs), + event.args[1:]]) + else: + return event.args -- cgit