diff options
| author | Lluís Vilanova <vilanova@ac.upc.edu> | 2017-07-04 10:46:39 +0200 |
|---|---|---|
| committer | Stefan Hajnoczi <stefanha@redhat.com> | 2017-07-17 13:11:12 +0100 |
| commit | 864a2178d4c014a217cacf76e42b818fe9feb1d4 (patch) | |
| tree | e3cf45453f3022d8f96de65aadaa413670ef8426 /scripts/tracetool/__init__.py | |
| parent | 61a67f71dd7e437212a2730c4462dff9b3b7b3da (diff) | |
| download | qemu-864a2178d4c014a217cacf76e42b818fe9feb1d4.tar.gz | |
trace: [tcg] Do not generate TCG code to trace dynamically-disabled events
If an event is dynamically disabled, the TCG code that calls the
execution-time tracer is not generated.
Removes the overheads of execution-time tracers for dynamically disabled
events. As a bonus, also avoids checking the event state when the
execution-time tracer is called from TCG-generated code (since otherwise
TCG would simply not call it).
Signed-off-by: Lluís Vilanova <vilanova@ac.upc.edu>
Signed-off-by: Emilio G. Cota <cota@braap.org>
Message-id: 149915799921.6295.13067154430923434035.stgit@frigg.lan
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Diffstat (limited to 'scripts/tracetool/__init__.py')
| -rw-r--r-- | scripts/tracetool/__init__.py | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/scripts/tracetool/__init__.py b/scripts/tracetool/__init__.py index 1ffbc1dc40..d4c204a472 100644 --- a/scripts/tracetool/__init__.py +++ b/scripts/tracetool/__init__.py @@ -6,7 +6,7 @@ Machinery for generating tracing-related intermediate files. """ __author__ = "Lluís Vilanova <vilanova@ac.upc.edu>" -__copyright__ = "Copyright 2012-2016, Lluís Vilanova <vilanova@ac.upc.edu>" +__copyright__ = "Copyright 2012-2017, Lluís Vilanova <vilanova@ac.upc.edu>" __license__ = "GPL version 2 or (at your option) any later version" __maintainer__ = "Stefan Hajnoczi" @@ -268,6 +268,7 @@ class Event(object): return self._FMT.findall(self.fmt) QEMU_TRACE = "trace_%(name)s" + QEMU_TRACE_NOCHECK = "_nocheck__" + QEMU_TRACE QEMU_TRACE_TCG = QEMU_TRACE + "_tcg" QEMU_DSTATE = "_TRACE_%(NAME)s_DSTATE" QEMU_EVENT = "_TRACE_%(NAME)s_EVENT" |