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authorDaniel P. Berrange <berrange@redhat.com>2016-10-04 14:35:59 +0100
committerStefan Hajnoczi <stefanha@redhat.com>2016-10-12 09:54:53 +0200
commit80dd5c4918aba98f025ca60c838dd68b6e33ff0e (patch)
treed5f3211dfac8171b53185f8f2b92d209d8c04bbb /scripts/tracetool/__init__.py
parent0bc6484d58bd7f43fbf6fc87c7974910b698489c (diff)
trace: introduce a formal group name for trace events
The declarations in the generated-tracers.h file are assuming there's only ever going to be one instance of this header, as they are not namespaced. When we have one header per event group, if a single source file needs to include multiple sets of trace events, the symbols will all clash. This change thus introduces a '--group NAME' arg to the 'tracetool' program. This will cause all the symbols in the generated header files to be given a unique namespace. If no group is given, the group name 'common' is used, which is suitable for the current usage where there is only one global trace-events file used for code generation. Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Daniel P. Berrange <berrange@redhat.com> Reviewed-by: LluĂ­s Vilanova <vilanova@ac.upc.edu> Message-id: 1475588159-30598-21-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__.py6
1 files changed, 4 insertions, 2 deletions
diff --git a/scripts/tracetool/__init__.py b/scripts/tracetool/__init__.py
index ac2cb8fa98..365446fa53 100644
--- a/scripts/tracetool/__init__.py
+++ b/scripts/tracetool/__init__.py
@@ -364,7 +364,7 @@ def try_import(mod_name, attr_name=None, attr_default=None):
return False, None
-def generate(events, format, backends,
+def generate(events, group, format, backends,
binary=None, probe_prefix=None):
"""Generate the output for the given (format, backends) pair.
@@ -372,6 +372,8 @@ def generate(events, format, backends,
----------
events : list
list of Event objects to generate for
+ group: str
+ Name of the tracing group
format : str
Output format name.
backends : list
@@ -401,4 +403,4 @@ def generate(events, format, backends,
tracetool.backend.dtrace.BINARY = binary
tracetool.backend.dtrace.PROBEPREFIX = probe_prefix
- tracetool.format.generate(events, format, backend)
+ tracetool.format.generate(events, format, backend, group)