mirror of https://gitee.com/openkylin/qemu.git
tracing: excise the tcg related from tracetool
Now we have no TCG trace events and no longer handle them in the code we can remove the handling from the tracetool to generate them. vcpu tracing is still available although the existing syscall event is an exercise in redundancy (plugins and -strace can also get the information). Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Cc: Luis Vilanova <vilanova@imperial.ac.uk> Cc: Stefan Hajnoczi <stefanha@redhat.com> Message-Id: <20220204204335.1689602-21-alex.bennee@linaro.org>
This commit is contained in:
Alex Bennée
parent
d201cf7a73
commit
126d4123c5
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@ -79,8 +79,6 @@ static inline void glue(gen_helper_, name)(dh_retvar_decl(ret) \
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}
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#include "helper.h"
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#include "trace/generated-helpers.h"
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#include "trace/generated-helpers-wrappers.h"
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#include "accel/tcg/tcg-runtime.h"
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#include "accel/tcg/plugin-helpers.h"
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@ -2357,19 +2357,15 @@ tracetool_depends = files(
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'scripts/tracetool/backend/simple.py',
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'scripts/tracetool/backend/syslog.py',
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'scripts/tracetool/backend/ust.py',
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'scripts/tracetool/format/tcg_h.py',
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'scripts/tracetool/format/ust_events_c.py',
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'scripts/tracetool/format/ust_events_h.py',
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'scripts/tracetool/format/__init__.py',
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'scripts/tracetool/format/d.py',
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'scripts/tracetool/format/tcg_helper_c.py',
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'scripts/tracetool/format/simpletrace_stap.py',
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'scripts/tracetool/format/c.py',
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'scripts/tracetool/format/h.py',
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'scripts/tracetool/format/tcg_helper_h.py',
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'scripts/tracetool/format/log_stap.py',
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'scripts/tracetool/format/stap.py',
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'scripts/tracetool/format/tcg_helper_wrapper_h.py',
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'scripts/tracetool/__init__.py',
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'scripts/tracetool/transform.py',
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'scripts/tracetool/vcpu.py'
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@ -87,8 +87,6 @@ def out(*lines, **kwargs):
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"ssize_t",
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"uintptr_t",
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"ptrdiff_t",
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# Magic substitution is done by tracetool
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"TCGv",
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]
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def validate_type(name):
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@ -232,7 +230,7 @@ class Event(object):
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"(?:(?:(?P<fmt_trans>\".+),)?\s*(?P<fmt>\".+))?"
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"\s*")
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_VALID_PROPS = set(["disable", "tcg", "tcg-trans", "tcg-exec", "vcpu"])
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_VALID_PROPS = set(["disable", "vcpu"])
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def __init__(self, name, props, fmt, args, lineno, filename, orig=None,
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event_trans=None, event_exec=None):
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@ -321,15 +319,6 @@ def build(line_str, lineno, filename):
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fmt = [fmt_trans, fmt]
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args = Arguments.build(groups["args"])
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if "tcg-trans" in props:
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raise ValueError("Invalid property 'tcg-trans'")
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if "tcg-exec" in props:
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raise ValueError("Invalid property 'tcg-exec'")
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if "tcg" not in props and not isinstance(fmt, str):
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raise ValueError("Only events with 'tcg' property can have two format strings")
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if "tcg" in props and isinstance(fmt, str):
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raise ValueError("Events with 'tcg' property must have two format strings")
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event = Event(name, props, fmt, args, lineno, filename)
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# add implicit arguments when using the 'vcpu' property
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@ -409,33 +398,7 @@ def read_events(fobj, fname):
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e.args = (arg0,) + e.args[1:]
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raise
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# transform TCG-enabled events
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if "tcg" not in event.properties:
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events.append(event)
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else:
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event_trans = event.copy()
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event_trans.name += "_trans"
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event_trans.properties += ["tcg-trans"]
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event_trans.fmt = event.fmt[0]
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# ignore TCG arguments
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args_trans = []
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for atrans, aorig in zip(
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event_trans.transform(tracetool.transform.TCG_2_HOST).args,
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event.args):
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if atrans == aorig:
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args_trans.append(atrans)
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event_trans.args = Arguments(args_trans)
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event_exec = event.copy()
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event_exec.name += "_exec"
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event_exec.properties += ["tcg-exec"]
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event_exec.fmt = event.fmt[1]
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event_exec.args = event_exec.args.transform(tracetool.transform.TCG_2_HOST)
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new_event = [event_trans, event_exec]
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event.event_trans, event.event_exec = new_event
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events.extend(new_event)
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events.append(event)
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return events
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@ -1,83 +0,0 @@
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# -*- coding: utf-8 -*-
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"""
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Generate .h file for TCG code generation.
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"""
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__author__ = "Lluís Vilanova <vilanova@ac.upc.edu>"
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__copyright__ = "Copyright 2012-2017, Lluís Vilanova <vilanova@ac.upc.edu>"
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__license__ = "GPL version 2 or (at your option) any later version"
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__maintainer__ = "Stefan Hajnoczi"
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__email__ = "stefanha@redhat.com"
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from tracetool import out, Arguments
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import tracetool.vcpu
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def vcpu_transform_args(args):
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assert len(args) == 1
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return Arguments([
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args,
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# NOTE: this name must be kept in sync with the one in "tcg_h"
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# NOTE: Current helper code uses TCGv_env (CPUArchState*)
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("TCGv_env", "__tcg_" + args.names()[0]),
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])
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def generate(events, backend, group):
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if group == "root":
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header = "trace/trace-root.h"
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else:
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header = "trace.h"
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out('/* This file is autogenerated by tracetool, do not edit. */',
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'/* You must include this file after the inclusion of helper.h */',
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'',
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'#ifndef TRACE_%s_GENERATED_TCG_TRACERS_H' % group.upper(),
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'#define TRACE_%s_GENERATED_TCG_TRACERS_H' % group.upper(),
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'',
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'#include "exec/helper-proto.h"',
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'#include "%s"' % header,
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'',
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)
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for e in events:
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# just keep one of them
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if "tcg-exec" not in e.properties:
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continue
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out('static inline void %(name_tcg)s(%(args)s)',
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'{',
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name_tcg=e.original.api(e.QEMU_TRACE_TCG),
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args=tracetool.vcpu.transform_args("tcg_h", e.original))
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if "disable" not in e.properties:
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args_trans = e.original.event_trans.args
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args_exec = tracetool.vcpu.transform_args(
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"tcg_helper_c", e.original.event_exec, "wrapper")
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if "vcpu" in e.properties:
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trace_cpu = e.args.names()[0]
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cond = "trace_event_get_vcpu_state(%(cpu)s,"\
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" TRACE_%(id)s)"\
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% dict(
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cpu=trace_cpu,
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id=e.original.event_exec.name.upper())
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else:
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cond = "true"
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out(' %(name_trans)s(%(argnames_trans)s);',
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' if (%(cond)s) {',
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' gen_helper_%(name_exec)s(%(argnames_exec)s);',
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' }',
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name_trans=e.original.event_trans.api(e.QEMU_TRACE),
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name_exec=e.original.event_exec.api(e.QEMU_TRACE),
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argnames_trans=", ".join(args_trans.names()),
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argnames_exec=", ".join(args_exec.names()),
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cond=cond)
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out('}')
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out('',
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'#endif /* TRACE_%s_GENERATED_TCG_TRACERS_H */' % group.upper())
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@ -1,79 +0,0 @@
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# -*- coding: utf-8 -*-
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"""
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Generate trace/generated-helpers.c.
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"""
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__author__ = "Lluís Vilanova <vilanova@ac.upc.edu>"
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__copyright__ = "Copyright 2012-2017, Lluís Vilanova <vilanova@ac.upc.edu>"
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__license__ = "GPL version 2 or (at your option) any later version"
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__maintainer__ = "Stefan Hajnoczi"
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__email__ = "stefanha@redhat.com"
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from tracetool import Arguments, out
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from tracetool.transform import *
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import tracetool.vcpu
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def vcpu_transform_args(args, mode):
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assert len(args) == 1
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# NOTE: this name must be kept in sync with the one in "tcg_h"
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args = Arguments([(args.types()[0], "__tcg_" + args.names()[0])])
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if mode == "code":
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return Arguments([
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# Does cast from helper requirements to tracing types
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("CPUState *", "env_cpu(%s)" % args.names()[0]),
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])
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else:
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args = Arguments([
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# NOTE: Current helper code uses TCGv_env (CPUArchState*)
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("CPUArchState *", args.names()[0]),
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])
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if mode == "header":
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return args
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elif mode == "wrapper":
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return args.transform(HOST_2_TCG)
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else:
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assert False
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def generate(events, backend, group):
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if group == "root":
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header = "trace/trace-root.h"
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else:
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header = "trace.h"
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events = [e for e in events
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if "disable" not in e.properties]
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out('/* This file is autogenerated by tracetool, do not edit. */',
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'',
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'#include "qemu/osdep.h"',
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'#include "cpu.h"',
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'#include "exec/helper-proto.h"',
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'#include "%s"' % header,
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'',
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)
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for e in events:
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if "tcg-exec" not in e.properties:
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continue
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e_args_api = tracetool.vcpu.transform_args(
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"tcg_helper_c", e.original, "header").transform(
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HOST_2_TCG_COMPAT, TCG_2_TCG_HELPER_DEF)
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e_args_call = tracetool.vcpu.transform_args(
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"tcg_helper_c", e, "code")
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out('void %(name_tcg)s(%(args_api)s)',
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'{',
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# NOTE: the check was already performed at TCG-generation time
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' %(name)s(%(args_call)s);',
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'}',
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name_tcg="helper_%s_proxy" % e.api(),
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name=e.api(e.QEMU_TRACE_NOCHECK),
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args_api=e_args_api,
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args_call=", ".join(e_args_call.casted()),
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)
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@ -1,48 +0,0 @@
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# -*- coding: utf-8 -*-
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"""
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Generate trace/generated-helpers.h.
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"""
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__author__ = "Lluís Vilanova <vilanova@ac.upc.edu>"
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__copyright__ = "Copyright 2012-2016, Lluís Vilanova <vilanova@ac.upc.edu>"
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__license__ = "GPL version 2 or (at your option) any later version"
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__maintainer__ = "Stefan Hajnoczi"
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__email__ = "stefanha@redhat.com"
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from tracetool import out
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from tracetool.transform import *
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import tracetool.vcpu
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def generate(events, backend, group):
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events = [e for e in events
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if "disable" not in e.properties]
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out('/* This file is autogenerated by tracetool, do not edit. */',
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'',
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)
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for e in events:
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if "tcg-exec" not in e.properties:
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continue
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# TCG helper proxy declaration
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fmt = "DEF_HELPER_FLAGS_%(argc)d(%(name)s, %(flags)svoid%(types)s)"
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e_args = tracetool.vcpu.transform_args("tcg_helper_c", e.original, "header")
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args = e_args.transform(HOST_2_TCG_COMPAT, HOST_2_TCG,
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TCG_2_TCG_HELPER_DECL)
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types = ", ".join(args.types())
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if types != "":
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types = ", " + types
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flags = "TCG_CALL_NO_RWG, "
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out(fmt,
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flags=flags,
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argc=len(args),
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name=e.api() + "_proxy",
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types=types,
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)
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@ -1,70 +0,0 @@
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# -*- coding: utf-8 -*-
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"""
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Generate trace/generated-helpers-wrappers.h.
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"""
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__author__ = "Lluís Vilanova <vilanova@ac.upc.edu>"
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__copyright__ = "Copyright 2012-2016, Lluís Vilanova <vilanova@ac.upc.edu>"
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__license__ = "GPL version 2 or (at your option) any later version"
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__maintainer__ = "Stefan Hajnoczi"
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__email__ = "stefanha@redhat.com"
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from tracetool import out
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from tracetool.transform import *
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import tracetool.vcpu
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def generate(events, backend, group):
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events = [e for e in events
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if "disable" not in e.properties]
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out('/* This file is autogenerated by tracetool, do not edit. */',
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'',
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'#define tcg_temp_new_nop(v) (v)',
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'#define tcg_temp_free_nop(v)',
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'',
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)
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for e in events:
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if "tcg-exec" not in e.properties:
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continue
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# tracetool.generate always transforms types to host
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e_args = tracetool.vcpu.transform_args("tcg_helper_c", e.original, "wrapper")
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# mixed-type to TCG helper bridge
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args_tcg_compat = e_args.transform(HOST_2_TCG_COMPAT)
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code_new = [
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"%(tcg_type)s __%(name)s = %(tcg_func)s(%(name)s);" %
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{"tcg_type": transform_type(type_, HOST_2_TCG),
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"tcg_func": transform_type(type_, HOST_2_TCG_TMP_NEW),
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"name": name}
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for (type_, name) in args_tcg_compat
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]
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code_free = [
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"%(tcg_func)s(__%(name)s);" %
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{"tcg_func": transform_type(type_, HOST_2_TCG_TMP_FREE),
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"name": name}
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for (type_, name) in args_tcg_compat
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]
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gen_name = "gen_helper_" + e.api()
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out('static inline void %(name)s(%(args)s)',
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'{',
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' %(code_new)s',
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' %(proxy_name)s(%(tmp_names)s);',
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' %(code_free)s',
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'}',
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name=gen_name,
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args=e_args,
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proxy_name=gen_name + "_proxy",
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code_new="\n ".join(code_new),
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code_free="\n ".join(code_free),
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tmp_names=", ".join(["__%s" % name for _, name in e_args]),
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)
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@ -19,19 +19,9 @@
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def transform_event(event):
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"""Transform event to comply with the 'vcpu' property (if present)."""
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if "vcpu" in event.properties:
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# events with 'tcg-trans' and 'tcg-exec' are auto-generated from
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# already-patched events
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assert "tcg-trans" not in event.properties
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assert "tcg-exec" not in event.properties
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event.args = Arguments([("void *", "__cpu"), event.args])
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if "tcg" in event.properties:
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fmt = "\"cpu=%p \""
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event.fmt = [fmt + event.fmt[0],
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fmt + event.fmt[1]]
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else:
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fmt = "\"cpu=%p \""
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event.fmt = fmt + event.fmt
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fmt = "\"cpu=%p \""
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event.fmt = fmt + event.fmt
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return event
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@ -66,19 +66,6 @@ trace_events_all = custom_target('trace-events-all',
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install: true,
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install_dir: qemu_datadir)
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foreach d : [
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['generated-helpers.c', 'tcg-helper-c'],
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['generated-helpers.h', 'tcg-helper-h'],
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['generated-helpers-wrappers.h', 'tcg-helper-wrapper-h'],
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]
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gen = custom_target(d[0],
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output: d[0],
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input: meson.project_source_root() / 'trace-events',
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command: [ tracetool, '--group=root', '--format=@0@'.format(d[1]), '@INPUT@', '@OUTPUT@' ],
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depend_files: tracetool_depends)
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specific_ss.add(when: 'CONFIG_TCG', if_true: gen)
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endforeach
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if 'ust' in get_option('trace_backends')
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trace_ust_all_h = custom_target('trace-ust-all.h',
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output: 'trace-ust-all.h',
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