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authorDaniel P. Berrange <berrange@redhat.com>2016-10-04 14:35:45 +0100
committerStefan Hajnoczi <stefanha@redhat.com>2016-10-12 09:35:54 +0200
commit93977402441405055500ff0389b49f6bbac9d50b (patch)
tree3a1e1ded1e54db71d2576460552faae5d0f32136 /scripts/tracetool/__init__.py
parent599ab2f241ee6693ea0a2700210718327b346f7f (diff)
downloadfocaccia-qemu-93977402441405055500ff0389b49f6bbac9d50b.tar.gz
focaccia-qemu-93977402441405055500ff0389b49f6bbac9d50b.zip
trace: remove global 'uint16 dstate[]' array
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: LluĂ­s 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>
Diffstat (limited to 'scripts/tracetool/__init__.py')
-rw-r--r--scripts/tracetool/__init__.py3
1 files changed, 2 insertions, 1 deletions
diff --git a/scripts/tracetool/__init__.py b/scripts/tracetool/__init__.py
index be24039c5e..a11f36b5d4 100644
--- a/scripts/tracetool/__init__.py
+++ b/scripts/tracetool/__init__.py
@@ -265,11 +265,12 @@ class Event(object):
 
     QEMU_TRACE               = "trace_%(name)s"
     QEMU_TRACE_TCG           = QEMU_TRACE + "_tcg"
+    QEMU_DSTATE              = "_TRACE_%(NAME)s_DSTATE"
 
     def api(self, fmt=None):
         if fmt is None:
             fmt = Event.QEMU_TRACE
-        return fmt % {"name": self.name}
+        return fmt % {"name": self.name, "NAME": self.name.upper()}
 
     def transform(self, *trans):
         """Return a new Event with transformed Arguments."""