@@ -271,6 +271,7 @@ class Event(object):
QEMU_TRACE_NOCHECK = "_nocheck__" + QEMU_TRACE
QEMU_TRACE_TCG = QEMU_TRACE + "_tcg"
QEMU_DSTATE = "_TRACE_%(NAME)s_DSTATE"
+ QEMU_BACKEND_DSTATE = "TRACE_%(NAME)s_BACKEND_DSTATE"
QEMU_EVENT = "_TRACE_%(NAME)s_EVENT"
def api(self, fmt=None):
@@ -119,5 +119,8 @@ class Wrapper:
def generate(self, event, group):
self._run_function("generate_%s", event, group)
+ def generate_backend_dstate(self, event, group):
+ self._run_function("generate_%s_backend_dstate", event, group)
+
def generate_end(self, events, group):
self._run_function("generate_%s_end", events, group)
@@ -44,8 +44,20 @@ def generate_h_begin(events, group):
out('#include "%s"' % header,
'')
+ # SystemTap defines <provider>_<name>_ENABLED() but other DTrace
+ # implementations might not.
+ for e in events:
+ out('#ifndef QEMU_%(uppername)s_ENABLED',
+ '#define QEMU_%(uppername)s_ENABLED() true',
+ '#endif',
+ uppername=e.name.upper())
def generate_h(event, group):
out(' QEMU_%(uppername)s(%(argnames)s);',
uppername=event.name.upper(),
argnames=", ".join(event.args.names()))
+
+
+def generate_h_backend_dstate(event, group):
+ out(' QEMU_%(uppername)s_ENABLED() || \\',
+ uppername=event.name.upper())
@@ -45,3 +45,8 @@ def generate_h(event, group):
event_id="TRACE_" + event.name.upper(),
fmt=event.fmt.rstrip("\n"),
argnames=argnames)
+
+
+def generate_h_backend_dstate(event, group):
+ out(' trace_event_get_state_dynamic_by_id(%(event_id)s) || \\',
+ event_id="TRACE_" + event.name.upper())
@@ -48,3 +48,8 @@ def generate_h(event, group):
name=event.name,
fmt=event.fmt.rstrip("\n"),
argnames=argnames)
+
+
+def generate_h_backend_dstate(event, group):
+ out(' trace_event_get_state_dynamic_by_id(%(event_id)s) || \\',
+ event_id="TRACE_" + event.name.upper())
@@ -42,6 +42,11 @@ def generate_h(event, group):
args=", ".join(event.args.names()))
+def generate_h_backend_dstate(event, group):
+ out(' trace_event_get_state_dynamic_by_id(%(event_id)s) || \\',
+ event_id="TRACE_" + event.name.upper())
+
+
def generate_c_begin(events, group):
out('#include "qemu/osdep.h"',
'#include "trace/control.h"',
@@ -42,3 +42,8 @@ def generate_h(event, group):
name=event.name,
fmt=event.fmt.rstrip("\n"),
argnames=argnames)
+
+
+def generate_h_backend_dstate(event, group):
+ out(' trace_event_get_state_dynamic_by_id(%(event_id)s) || \\',
+ event_id="TRACE_" + event.name.upper())
@@ -27,6 +27,11 @@ def generate_h_begin(events, group):
out('#include <lttng/tracepoint.h>',
'#include "%s"' % header,
+ '',
+ '/* tracepoint_enabled() was introduced in LTTng UST 2.7 */',
+ '#ifndef tracepoint_enabled',
+ '#define tracepoint_enabled(a, b) true',
+ '#endif',
'')
@@ -38,3 +43,8 @@ def generate_h(event, group):
out(' tracepoint(qemu, %(name)s%(tp_args)s);',
name=event.name,
tp_args=argnames)
+
+
+def generate_h_backend_dstate(event, group):
+ out(' tracepoint_enabled(qemu, %(name)s) || \\',
+ name=event.name)
@@ -49,6 +49,16 @@ def generate(events, backend, group):
backend.generate_begin(events, group)
for e in events:
+ # tracer-specific dstate
+ out('',
+ '#define %(api)s() ( \\',
+ api=e.api(e.QEMU_BACKEND_DSTATE))
+
+ if "disable" not in e.properties:
+ backend.generate_backend_dstate(e, group)
+
+ out(' false)')
+
# tracer without checks
out('',
'static inline void %(api)s(%(args)s)',