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9397740244
Instead of having a global dstate array, declare a single
'uint16 TRACE_${EVENT_NAME}_DSTATE' variable for each
trace event. Record a pointer to this variable in the
TraceEvent struct too.
By turning trace_event_get_state_dynamic_by_id into a
macro, this still hits the fast path, and cache affinity
is ensured by declaring all the uint16 vars adjacent to
each other.
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Lluís Vilanova <vilanova@ac.upc.edu>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Message-id: 1475588159-30598-7-git-send-email-berrange@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
64 lines
1.6 KiB
Python
64 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.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@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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'#ifndef TRACE__GENERATED_EVENTS_H',
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'#define TRACE__GENERATED_EVENTS_H',
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'')
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# event identifiers
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out('typedef enum {')
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for e in events:
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out(' TRACE_%s,' % e.name.upper())
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out(' TRACE_EVENT_COUNT',
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'} TraceEventID;')
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for e in events:
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out('extern uint16_t %s;' % e.api(e.QEMU_DSTATE))
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# per-vCPU event identifiers
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out('typedef enum {')
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for e in events:
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if "vcpu" in e.properties:
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out(' TRACE_VCPU_%s,' % e.name.upper())
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out(' TRACE_VCPU_EVENT_COUNT',
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'} TraceEventVCPUID;')
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# static state
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for e in events:
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if 'disable' in e.properties:
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enabled = 0
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else:
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enabled = 1
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if "tcg-exec" in e.properties:
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# a single define for the two "sub-events"
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out('#define TRACE_%(name)s_ENABLED %(enabled)d',
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name=e.original.name.upper(),
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enabled=enabled)
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out('#define TRACE_%s_ENABLED %d' % (e.name.upper(), enabled))
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out('#include "trace/event-internal.h"',
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'',
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'#endif /* TRACE__GENERATED_EVENTS_H */')
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