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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>
50 lines
1.4 KiB
Python
50 lines
1.4 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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out('TraceEvent trace_events[TRACE_EVENT_COUNT] = {')
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for e in events:
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if "vcpu" in e.properties:
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vcpu_id = "TRACE_VCPU_" + e.name.upper()
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else:
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vcpu_id = "TRACE_VCPU_EVENT_COUNT"
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out(' { .id = %(id)s, .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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id = "TRACE_" + e.name.upper(),
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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('};',
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'')
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