From 864a2178d4c014a217cacf76e42b818fe9feb1d4 Mon Sep 17 00:00:00 2001 From: Lluís Vilanova Date: Tue, 4 Jul 2017 10:46:39 +0200 Subject: trace: [tcg] Do not generate TCG code to trace dynamically-disabled events MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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 Signed-off-by: Emilio G. Cota Message-id: 149915799921.6295.13067154430923434035.stgit@frigg.lan Signed-off-by: Stefan Hajnoczi --- scripts/tracetool/__init__.py | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'scripts/tracetool/__init__.py') 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 " -__copyright__ = "Copyright 2012-2016, Lluís Vilanova " +__copyright__ = "Copyright 2012-2017, Lluís Vilanova " __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" -- cgit 1.4.1