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trace: Conditionally trace events based on their per-vCPU state
Events with the 'vcpu' property are conditionally emitted according to their per-vCPU state. Other events are emitted normally based on their global tracing state. Note that the per-vCPU condition check applies to all tracing backends. Signed-off-by: Lluís Vilanova <vilanova@ac.upc.edu> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
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6 changed files with 57 additions and 29 deletions
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@ -6,7 +6,7 @@ DTrace/SystemTAP backend.
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"""
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__author__ = "Lluís Vilanova <vilanova@ac.upc.edu>"
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__copyright__ = "Copyright 2012-2014, 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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@ -41,6 +41,6 @@ def generate_h_begin(events):
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def generate_h(event):
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out(' QEMU_%(uppername)s(%(argnames)s);',
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out(' QEMU_%(uppername)s(%(argnames)s);',
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uppername=event.name.upper(),
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argnames=", ".join(event.args.names()))
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