aboutsummaryrefslogtreecommitdiff
path: root/trace/Makefile.objs
diff options
context:
space:
mode:
authorLluís Vilanova <vilanova@ac.upc.edu>2014-05-27 15:02:14 +0200
committerStefan Hajnoczi <stefanha@redhat.com>2014-06-09 15:43:40 +0200
commit5b808275f3bbe8cc95bb9301f4d5a41331d0e0e6 (patch)
treed5611a010851864336448529088cd94a9afcf83a /trace/Makefile.objs
parent82432638ebeedda8a2e18838b6fbef4b14a94f31 (diff)
trace: Multi-backend tracing
Adds support to compile QEMU with multiple tracing backends at the same time. For example, you can compile QEMU with: $ ./configure --enable-trace-backends=ftrace,dtrace Where 'ftrace' can be handy for having an in-flight record of events, and 'dtrace' can be later used to extract more information from the system. This patch allows having both available without recompiling QEMU. Signed-off-by: Lluís Vilanova <vilanova@ac.upc.edu> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Diffstat (limited to 'trace/Makefile.objs')
-rw-r--r--trace/Makefile.objs32
1 files changed, 15 insertions, 17 deletions
diff --git a/trace/Makefile.objs b/trace/Makefile.objs
index 6a30467096..d7a86969a4 100644
--- a/trace/Makefile.objs
+++ b/trace/Makefile.objs
@@ -3,12 +3,12 @@
######################################################################
# Auto-generated event descriptions for LTTng ust code
-ifeq ($(TRACE_BACKEND),ust)
+ifeq ($(findstring ust,$(TRACE_BACKENDS)),ust)
$(obj)/generated-ust-provider.h: $(obj)/generated-ust-provider.h-timestamp
$(obj)/generated-ust-provider.h-timestamp: $(SRC_PATH)/trace-events
$(call quiet-command,$(TRACETOOL) \
--format=ust-events-h \
- --backend=$(TRACE_BACKEND) \
+ --backends=$(TRACE_BACKENDS) \
< $< > $@," GEN $(patsubst %-timestamp,%,$@)")
@cmp -s $@ $(patsubst %-timestamp,%,$@) || cp $@ $(patsubst %-timestamp,%,$@)
@@ -16,7 +16,7 @@ $(obj)/generated-ust.c: $(obj)/generated-ust.c-timestamp $(BUILD_DIR)/config-hos
$(obj)/generated-ust.c-timestamp: $(SRC_PATH)/trace-events
$(call quiet-command,$(TRACETOOL) \
--format=ust-events-c \
- --backend=$(TRACE_BACKEND) \
+ --backends=$(TRACE_BACKENDS) \
< $< > $@," GEN $(patsubst %-timestamp,%,$@)")
@cmp -s $@ $(patsubst %-timestamp,%,$@) || cp $@ $(patsubst %-timestamp,%,$@)
@@ -31,7 +31,7 @@ $(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=$(TRACE_BACKEND) \
+ --backends=$(TRACE_BACKENDS) \
< $< > $@," GEN $(patsubst %-timestamp,%,$@)")
@cmp -s $@ $(patsubst %-timestamp,%,$@) || cp $@ $(patsubst %-timestamp,%,$@)
@@ -39,7 +39,7 @@ $(obj)/generated-events.c: $(obj)/generated-events.c-timestamp $(BUILD_DIR)/conf
$(obj)/generated-events.c-timestamp: $(SRC_PATH)/trace-events
$(call quiet-command,$(TRACETOOL) \
--format=events-c \
- --backend=$(TRACE_BACKEND) \
+ --backends=$(TRACE_BACKENDS) \
< $< > $@," GEN $(patsubst %-timestamp,%,$@)")
@cmp -s $@ $(patsubst %-timestamp,%,$@) || cp $@ $(patsubst %-timestamp,%,$@)
@@ -54,23 +54,21 @@ $(obj)/generated-tracers.h: $(obj)/generated-tracers.h-timestamp
$(obj)/generated-tracers.h-timestamp: $(SRC_PATH)/trace-events $(BUILD_DIR)/config-host.mak
$(call quiet-command,$(TRACETOOL) \
--format=h \
- --backend=$(TRACE_BACKEND) \
+ --backends=$(TRACE_BACKENDS) \
< $< > $@," GEN $(patsubst %-timestamp,%,$@)")
######################################################################
# Auto-generated tracing routines (non-DTrace)
-ifneq ($(TRACE_BACKEND),dtrace)
$(obj)/generated-tracers.c: $(obj)/generated-tracers.c-timestamp
@cmp -s $< $@ || cp $< $@
$(obj)/generated-tracers.c-timestamp: $(SRC_PATH)/trace-events $(BUILD_DIR)/config-host.mak
$(call quiet-command,$(TRACETOOL) \
--format=c \
- --backend=$(TRACE_BACKEND) \
+ --backends=$(TRACE_BACKENDS) \
< $< > $@," GEN $(patsubst %-timestamp,%,$@)")
$(obj)/generated-tracers.o: $(obj)/generated-tracers.c $(obj)/generated-tracers.h
-endif
######################################################################
@@ -79,27 +77,27 @@ endif
# Normal practice is to name DTrace probe file with a '.d' extension
# but that gets picked up by QEMU's Makefile as an external dependency
# rule file. So we use '.dtrace' instead
-ifeq ($(TRACE_BACKEND),dtrace)
-$(obj)/generated-tracers.dtrace: $(obj)/generated-tracers.dtrace-timestamp
-$(obj)/generated-tracers.dtrace-timestamp: $(SRC_PATH)/trace-events $(BUILD_DIR)/config-host.mak
+ifeq ($(findstring dtrace,$(TRACE_BACKENDS)),dtrace)
+$(obj)/generated-tracers-dtrace.dtrace: $(obj)/generated-tracers-dtrace.dtrace-timestamp
+$(obj)/generated-tracers-dtrace.dtrace-timestamp: $(SRC_PATH)/trace-events $(BUILD_DIR)/config-host.mak
$(call quiet-command,$(TRACETOOL) \
--format=d \
- --backend=$(TRACE_BACKEND) \
+ --backends=$(TRACE_BACKENDS) \
< $< > $@," GEN $(patsubst %-timestamp,%,$@)")
@cmp -s $@ $(patsubst %-timestamp,%,$@) || cp $@ $(patsubst %-timestamp,%,$@)
-$(obj)/generated-tracers-dtrace.h: $(obj)/generated-tracers.dtrace
+$(obj)/generated-tracers-dtrace.h: $(obj)/generated-tracers-dtrace.dtrace
$(call quiet-command,dtrace -o $@ -h -s $<, " GEN $@")
-$(obj)/generated-tracers.o: $(obj)/generated-tracers.dtrace
+$(obj)/generated-tracers-dtrace.o: $(obj)/generated-tracers-dtrace.dtrace
+
+util-obj-y += generated-tracers-dtrace.o
endif
######################################################################
# Backend code
-util-obj-$(CONFIG_TRACE_DEFAULT) += default.o
util-obj-$(CONFIG_TRACE_SIMPLE) += simple.o
-util-obj-$(CONFIG_TRACE_STDERR) += stderr.o
util-obj-$(CONFIG_TRACE_FTRACE) += ftrace.o
util-obj-$(CONFIG_TRACE_UST) += generated-ust.o
util-obj-y += control.o