Generates the "guest_hypertrace" event with a user-configurable number
of arguments.
Signed-off-by: Lluís Vilanova <vilan...@ac.upc.edu>
---
Makefile | 7 ++++---
Makefile.objs | 2 ++
configure | 34 ++++++++++++++++++++++++++++++++++
trace-events | 11 +++++++++++
4 files changed, 51 insertions(+), 3 deletions(-)
diff --git a/Makefile b/Makefile
index 38814f9a61..d45158cf29 100644
--- a/Makefile
+++ b/Makefile
@@ -83,7 +83,7 @@ endif
GENERATED_FILES += $(TRACE_HEADERS)
GENERATED_FILES += $(TRACE_SOURCES)
-GENERATED_FILES += $(BUILD_DIR)/trace-events-all
+GENERATED_FILES += $(BUILD_DIR)/hypertrace/trace.h
trace-group-name = $(shell dirname $1 | sed -e 's/[^a-zA-Z0-9]/_/g')
@@ -92,7 +92,7 @@ tracetool-y += $(shell find $(SRC_PATH)/scripts/tracetool
-name "*.py")
%/trace.h: %/trace.h-timestamp
@cmp $< $@ >/dev/null 2>&1 || cp $< $@
-%/trace.h-timestamp: $(SRC_PATH)/%/trace-events $(tracetool-y)
+%/trace.h-timestamp: %/trace-events $(tracetool-y)
$(call quiet-command,$(TRACETOOL) \
--group=$(call trace-group-name,$@) \
--format=h \
@@ -101,7 +101,7 @@ tracetool-y += $(shell find $(SRC_PATH)/scripts/tracetool
-name "*.py")
%/trace.c: %/trace.c-timestamp
@cmp $< $@ >/dev/null 2>&1 || cp $< $@
-%/trace.c-timestamp: $(SRC_PATH)/%/trace-events $(tracetool-y)
+%/trace.c-timestamp: %/trace-events $(tracetool-y)
$(call quiet-command,$(TRACETOOL) \
--group=$(call trace-group-name,$@) \
--format=c \
@@ -534,6 +534,7 @@ distclean: clean
rm -Rf .sdk
if test -f pixman/config.log; then $(MAKE) -C pixman distclean; fi
if test -f dtc/version_gen.h; then $(MAKE) $(DTC_MAKE_ARGS) clean; fi
+ rm -f hypertrace/trace-events
KEYMAPS=da en-gb et fr fr-ch is lt modifiers no pt-br sv \
ar de en-us fi fr-be hr it lv nl pl ru th \
diff --git a/Makefile.objs b/Makefile.objs
index bfd5a6ceb1..ce9a60137b 100644
--- a/Makefile.objs
+++ b/Makefile.objs
@@ -170,9 +170,11 @@ trace-events-subdirs += accel/kvm
trace-events-subdirs += nbd
trace-events-files = $(SRC_PATH)/trace-events
$(trace-events-subdirs:%=$(SRC_PATH)/%/trace-events)
+trace-events-files += $(BUILD_DIR)/hypertrace/trace-events
trace-obj-y = trace-root.o
trace-obj-y += $(trace-events-subdirs:%=%/trace.o)
trace-obj-$(CONFIG_TRACE_UST) += trace-ust-all.o
trace-obj-$(CONFIG_TRACE_DTRACE) += trace-dtrace-root.o
trace-obj-$(CONFIG_TRACE_DTRACE) += $(trace-events-subdirs:%=%/trace-dtrace.o)
+trace-obj-y += $(BUILD_DIR)/hypertrace/trace.o
diff --git a/configure b/configure
index a3f0522e8f..e6f752c242 100755
--- a/configure
+++ b/configure
@@ -351,6 +351,7 @@ pie=""
qom_cast_debug="yes"
trace_backends="log"
trace_file="trace"
+hypertrace="1"
spice=""
rbd=""
smartcard=""
@@ -895,6 +896,8 @@ for opt do
;;
--with-trace-file=*) trace_file="$optarg"
;;
+ --with-hypertrace-args=*) hypertrace="$optarg"
+ ;;
--enable-gprof) gprof="yes"
;;
--enable-gcov) gcov="yes"
@@ -1425,6 +1428,8 @@ Advanced options (experts only):
Available backends: $trace_backend_list
--with-trace-file=NAME Full PATH,NAME of file to store traces
Default:trace-<pid>
+ --with-hypertrace-args=NUMBER
+ number of hypertrace arguments (default:
$hypertrace)
--disable-slirp disable SLIRP userspace network connectivity
--enable-tcg-interpreter enable TCG with bytecode interpreter (TCI)
--oss-lib path to OSS library
@@ -4434,6 +4439,16 @@ if test "$?" -ne 0 ; then
fi
##########################################
+# check hypertrace arguments
+case "$hypertrace" in
+ ''|*[!0-9]*) error_exit "invalid number of hypertrace arguments" ;;
+ *) ;;
+esac
+if test $hypertrace = 0; then
+ error_exit "hypertrace arguments must be greater than zero"
+fi
+
+##########################################
# For 'ust' backend, test if ust headers are present
if have_backend "ust"; then
cat > $TMPC << EOF
@@ -5282,6 +5297,7 @@ echo "Trace backends $trace_backends"
if have_backend "simple"; then
echo "Trace output file $trace_file-<pid>"
fi
+echo "Hypertrace arguments $hypertrace"
echo "spice support $spice $(echo_version $spice
$spice_protocol_version/$spice_server_version)"
echo "rbd support $rbd"
echo "xfsctl support $xfs"
@@ -5989,6 +6005,24 @@ else
fi
QEMU_INCLUDES="-I\$(SRC_PATH)/tcg $QEMU_INCLUDES"
+# hypertrace
+echo "CONFIG_HYPERTRACE_ARGS=$hypertrace" >> $config_host_mak
+hypertrace_events=hypertrace/trace-events
+mkdir -p $(dirname $hypertrace_events)
+echo "# See docs/trace-events.txt for syntax documentation."
>$hypertrace_events
+echo -n 'vcpu guest_hypertrace(' >>$hypertrace_events
+for i in `seq $hypertrace`; do
+ if test $i != 1; then
+ echo -n ", " >>$hypertrace_events
+ fi
+ echo -n "uint64_t arg$i" >>$hypertrace_events
+done
+echo -n ') ' >>$hypertrace_events
+for i in `seq $hypertrace`; do
+ echo -n "\" arg$i=0x%016\"PRIx64" >>$hypertrace_events
+done
+echo >>$hypertrace_events
+
echo "TOOLS=$tools" >> $config_host_mak
echo "ROMS=$roms" >> $config_host_mak
echo "MAKE=$make" >> $config_host_mak
diff --git a/trace-events b/trace-events
index f9dbd7f509..aeb7b6807d 100644
--- a/trace-events
+++ b/trace-events
@@ -88,6 +88,17 @@ vcpu guest_cpu_exit(void)
# Targets: all
vcpu guest_cpu_reset(void)
+# @argX: Hypertrace arguments.
+#
+# Event explicitly triggered by guest code. The event definition is
+# auto-generated from the "--with-hypertrace-args" configuration argument (see
+# "docs/hypertrace.txt"):
+#
+# vcpu guest_hypertrace(uint64_t arg0, ..., uint64_t argN-1)
+#
+# Mode: all
+# Targets: all
+
# @vaddr: Access' virtual address.
# @info : Access' information (see below).
#
