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trace: Provide a generic tracing event descriptor

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Uses tracetool to generate a backend-independent tracing event description
(struct TraceEvent).

The values for such structure are generated with the non-public "events"
backend ("events-c" frontend).

The generation of the defines to check if an event is statically enabled is also
moved to the "events" backend ("events-h" frontend).

Signed-off-by: Lluís Vilanova <vilanova@ac.upc.edu>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Lluís Vilanova 2013-03-05 14:47:32 +01:00 • committed by Stefan Hajnoczi
parent 93fba1618d
commit 45be2f5d0d
7 changed files with 172 additions and 9 deletions
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24
trace/Makefile.objs
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@ -1,7 +1,29 @@
# -*- mode: makefile -*-
######################################################################
# Auto-generated header for tracing routines
# Auto-generated event descriptions
$(obj)/generated-events.h: $(obj)/generated-events.h-timestamp
$(obj)/generated-events.h-timestamp: $(SRC_PATH)/trace-events
$(call quiet-command,$(TRACETOOL) \
--format=events-h \
--backend=events \
< $< > $@," GEN $(patsubst %-timestamp,%,$@)")
@cmp -s $@ $(patsubst %-timestamp,%,$@) || cp $@ $(patsubst %-timestamp,%,$@)
$(obj)/generated-events.c: $(obj)/generated-events.c-timestamp
$(obj)/generated-events.c-timestamp: $(SRC_PATH)/trace-events
$(call quiet-command,$(TRACETOOL) \
--format=events-c \
--backend=events \
< $< > $@," GEN $(patsubst %-timestamp,%,$@)")
@cmp -s $@ $(patsubst %-timestamp,%,$@) || cp $@ $(patsubst %-timestamp,%,$@)
util-obj-y += generated-events.o
######################################################################
# Auto-generated tracing routines
$(obj)/generated-tracers.h: $(obj)/generated-tracers.h-timestamp
@cmp -s $< $@ || cp $< $@