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* trace: switch position of headers to what Meson requiresPaolo Bonzini2020-08-211-4/+1Star
| | | | | | | | | | | | | | | | | Meson doesn't enjoy the same flexibility we have with Make in choosing the include path. In particular the tracing headers are using $(build_root)/$(<D). In order to keep the include directives unchanged, the simplest solution is to generate headers with patterns like "trace/trace-audio.h" and place forwarding headers in the source tree such that for example "audio/trace.h" includes "trace/trace-audio.h". This patch is too ugly to be applied to the Makefiles now. It's only a way to separate the changes to the tracing header files from the Meson rewrite of the tracing logic. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* scripts/tracetool: Update maintainer email addressPhilippe Mathieu-Daudé2020-06-241-1/+1
| | | | | | | | | | | | | | | | | There is an effort in progress to generate a QEMU Python package. As I'm not sure this old email is still valid, update it to not produce package with broken maintainer email. Patch created mechanically by running: $ sed -i 's,\(__email__ *= "\)stefanha@linux.vnet.ibm.com",\1stefanha@redhat.com",' \ $(git grep -l 'email.*stefanha@linux.vnet.ibm.com') Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com> Reviewed-by: John Snow <jsnow@redhat.com> Message-id: 20200511082816.696-1-philmd@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
* scripts/tracetool: Remove shebang headerPhilippe Mathieu-Daudé2020-02-071-1/+0Star
| | | | | | | | | | | | | | | | | Patch created mechanically by running: $ chmod 644 $(git grep -lF '#!/usr/bin/env python' \ | xargs grep -L 'if __name__.*__main__') $ sed -i "/^#\!\/usr\/bin\/\(env\ \)\?python.\?$/d" \ $(git grep -lF '#!/usr/bin/env python' \ | xargs grep -L 'if __name__.*__main__') Reported-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Suggested-by: Stefan Hajnoczi <stefanha@redhat.com> Acked-by: Stefan Hajnoczi <stefanha@redhat.com> Acked-by: Paolo Bonzini <pbonzini@redhat.com> Message-Id: <20200130163232.10446-9-philmd@redhat.com> Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
* trace: Do not include qom/cpu.h into generated trace.hMarkus Armbruster2019-08-161-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | docs/devel/tracing.txt explains "since many source files include trace.h, [the generated trace.h use] a minimum of types and other header files included to keep the namespace clean and compile times and dependencies down." Commit 4815185902 "trace: Add per-vCPU tracing states for events with the 'vcpu' property" made them all include qom/cpu.h via control-internal.h. qom/cpu.h in turn includes about thirty headers. Ouch. Per-vCPU tracing is currently not supported in sub-directories' trace-events. In other words, qom/cpu.h can only be used in trace-root.h, not in any trace.h. Split trace/control-vcpu.h off trace/control.h and trace/control-internal.h. Have the generated trace.h include trace/control.h (which no longer includes qom/cpu.h), and trace-root.h include trace/control-vcpu.h (which includes it). The resulting improvement is a bit disappointing: in my "build everything" tree, some 1100 out of 6600 objects (not counting tests and objects that don't depend on qemu/osdep.h) depend on a trace.h, and about 600 of them no longer depend on qom/cpu.h. But more than 1300 others depend on trace-root.h. More work is clearly needed. Left for another day. Cc: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com> Message-Id: <20190812052359.30071-8-armbru@redhat.com>
* trace: switch to modular code generation for sub-directoriesDaniel P. Berrange2017-01-311-1/+6
| | | | | | | | | | | | | | | Introduce rules in the top level Makefile that are able to generate trace.[ch] files in every subdirectory which has a trace-events file. The top level directory is handled specially, so instead of creating trace.h, it creates trace-root.h. This allows sub-directories to include the top level trace-root.h file, without ambiguity wrt to the trace.g file in the current sub-dir. Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Daniel P. Berrange <berrange@redhat.com> Message-id: 20170125161417.31949-7-berrange@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
* trace: introduce a formal group name for trace eventsDaniel P. Berrange2016-10-121-8/+10
| | | | | | | | | | | | | | | | | | | | | | | 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: Lluís Vilanova <vilanova@ac.upc.edu> Message-id: 1475588159-30598-21-git-send-email-berrange@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
* trace: get rid of generated-events.h/generated-events.cDaniel P. Berrange2016-10-121-5/+45
| | | | | | | | | | | | | | | | | | | | | Currently the generated-events.[ch] files contain the event dstates, constants and TraceEvent structs, while the generated-tracers.[ch] files contain the actual trace probe logic. With the removal of usage of the event enums from the API there is no longer any compelling reason for the separation between these files. The generated-events.h content is only ever needed from the generated-tracers.[ch] files. The enums/constants/structs from generated-events.[ch] are thus moved into the generated-tracers.[ch], so that there is one less file to be generated. Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Lluís Vilanova <vilanova@ac.upc.edu> Signed-off-by: Daniel P. Berrange <berrange@redhat.com> Message-id: 1475588159-30598-17-git-send-email-berrange@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
* trace: [tracetool] Minimize the amount of per-backend codeLluís Vilanova2014-05-071-2/+10
| | | | | | | Backends now only contain the essential backend-specific code, and most of the work is moved to frontend code. Signed-off-by: Lluís Vilanova <vilanova@ac.upc.edu> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
* trace: [tracetool] Change format docs to point to the generated fileLluís Vilanova2014-05-071-2/+2
| | | | | Signed-off-by: Lluís Vilanova <vilanova@ac.upc.edu> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
* tracetool: Add module for the 'c' formatLluís Vilanova2012-04-181-0/+20
Signed-off-by: Lluís Vilanova <vilanova@ac.upc.edu> Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>