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The TraceEventID and TraceEventVCPUID enums constants are no longer actually used for anything critical. The TRACE_EVENT_COUNT limit is used to determine the size of the TraceEvents array, and can be removed if we just NULL terminate the array instead. The TRACE_VCPU_EVENT_COUNT limit is used as a magic value for marking non-vCPU events, and also for declaring the size of the trace dstate mask in the CPUState struct. The former usage can be replaced by a dedicated constant TRACE_EVENT_VCPU_NONE, defined as (uint32_t)-1. For the latter usage, we can simply define a constant for the number of VCPUs, avoiding the need for the full enum. The only other usages of the enum values can be replaced by accesing the id/vcpu_id fields via the named TraceEvent structs. Reviewed-by: Lluís Vilanova <vilanova@ac.upc.edu> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Daniel P. Berrange <berrange@redhat.com> Message-id: 1475588159-30598-11-git-send-email-berrange@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
62 lines
1.6 KiB
Python
62 lines
1.6 KiB
Python
#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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"""
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trace/generated-events.c
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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@linux.vnet.ibm.com"
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from tracetool import out
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def generate(events, backend):
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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 "trace.h"',
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'#include "trace/generated-events.h"',
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'#include "trace/control.h"',
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'')
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for e in events:
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out('uint16_t %s;' % e.api(e.QEMU_DSTATE))
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next_id = 0
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next_vcpu_id = 0
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for e in events:
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id = next_id
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next_id += 1
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if "vcpu" in e.properties:
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vcpu_id = next_vcpu_id
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next_vcpu_id += 1
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else:
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vcpu_id = "TRACE_VCPU_EVENT_NONE"
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out('TraceEvent %(event)s = {',
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' .id = %(id)s,',
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' .vcpu_id = %(vcpu_id)s,',
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' .name = \"%(name)s\",',
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' .sstate = %(sstate)s,',
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' .dstate = &%(dstate)s ',
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'};',
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event = e.api(e.QEMU_EVENT),
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id = id,
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vcpu_id = vcpu_id,
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name = e.name,
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sstate = "TRACE_%s_ENABLED" % e.name.upper(),
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dstate = e.api(e.QEMU_DSTATE))
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out('TraceEvent *trace_events[] = {')
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for e in events:
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out(' &%(event)s,', event = e.api(e.QEMU_EVENT))
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out(' NULL,',
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'};',
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'')
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