qemu-e2k/scripts/tracetool

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#!/bin/sh
#
# Code generator for trace events
#
# Copyright IBM, Corp. 2010
#
# This work is licensed under the terms of the GNU GPL, version 2. See
# the COPYING file in the top-level directory.
# Disable pathname expansion, makes processing text with '*' characters simpler
set -f
usage()
{
cat >&2 <<EOF
usage: $0 [--nop | --simple | --stderr | --ust | --dtrace] [-h | -c]
Generate tracing code for a file on stdin.
Backends:
--nop Tracing disabled
--simple Simple built-in backend
--stderr Stderr built-in backend
--ust LTTng User Space Tracing backend
Add a DTrace tracing backend targetted for SystemTAP compatability This introduces a new tracing backend that targets the SystemTAP implementation of DTrace userspace tracing. The core functionality should be applicable and standard across any DTrace implementation on Solaris, OS-X, *BSD, but the Makefile rules will likely need some small additional changes to cope with OS specific build requirements. This backend builds a little differently from the other tracing backends. Specifically there is no 'trace.c' file, because the 'dtrace' command line tool generates a '.o' file directly from the dtrace probe definition file. The probe definition is usually named with a '.d' extension but QEMU uses '.d' files for its external makefile dependancy tracking, so this uses '.dtrace' as the extension for the probe definition file. The 'tracetool' program gains the ability to generate a trace.h file for DTrace, and also to generate the trace.d file containing the dtrace probe definition. Example usage of a dtrace probe in systemtap looks like: probe process("qemu").mark("qemu_malloc") { printf("Malloc %d %p\n", $arg1, $arg2); } * .gitignore: Ignore trace-dtrace.* * Makefile: Extra rules for generating DTrace files * Makefile.obj: Don't build trace.o for DTrace, use trace-dtrace.o generated by 'dtrace' instead * tracetool: Support for generating DTrace data files Reviewed-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: Daniel P. Berrange <berrange@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2010-11-12 14:20:24 +01:00
--dtrace DTrace/SystemTAP backend
Output formats:
-h Generate .h file
-c Generate .c file
-d Generate .d file (DTrace only)
--stap Generate .stp file (DTrace with SystemTAP only)
Options:
--binary [path] Full path to QEMU binary
--target-arch [arch] QEMU emulator target arch
--target-type [type] QEMU emulator target type ('system' or 'user')
--probe-prefix [prefix] Prefix for dtrace probe names
(default: qemu-\$targettype-\$targetarch)
EOF
exit 1
}
# Get the name of a trace event
get_name()
{
echo ${1%%\(*}
}
# Get the argument list of a trace event, including types and names
get_args()
{
local args
args=${1#*\(}
args=${args%%\)*}
echo "$args"
}
# Get the argument name list of a trace event
get_argnames()
{
Add a DTrace tracing backend targetted for SystemTAP compatability This introduces a new tracing backend that targets the SystemTAP implementation of DTrace userspace tracing. The core functionality should be applicable and standard across any DTrace implementation on Solaris, OS-X, *BSD, but the Makefile rules will likely need some small additional changes to cope with OS specific build requirements. This backend builds a little differently from the other tracing backends. Specifically there is no 'trace.c' file, because the 'dtrace' command line tool generates a '.o' file directly from the dtrace probe definition file. The probe definition is usually named with a '.d' extension but QEMU uses '.d' files for its external makefile dependancy tracking, so this uses '.dtrace' as the extension for the probe definition file. The 'tracetool' program gains the ability to generate a trace.h file for DTrace, and also to generate the trace.d file containing the dtrace probe definition. Example usage of a dtrace probe in systemtap looks like: probe process("qemu").mark("qemu_malloc") { printf("Malloc %d %p\n", $arg1, $arg2); } * .gitignore: Ignore trace-dtrace.* * Makefile: Extra rules for generating DTrace files * Makefile.obj: Don't build trace.o for DTrace, use trace-dtrace.o generated by 'dtrace' instead * tracetool: Support for generating DTrace data files Reviewed-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: Daniel P. Berrange <berrange@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2010-11-12 14:20:24 +01:00
local nfields field name sep
nfields=0
Add a DTrace tracing backend targetted for SystemTAP compatability This introduces a new tracing backend that targets the SystemTAP implementation of DTrace userspace tracing. The core functionality should be applicable and standard across any DTrace implementation on Solaris, OS-X, *BSD, but the Makefile rules will likely need some small additional changes to cope with OS specific build requirements. This backend builds a little differently from the other tracing backends. Specifically there is no 'trace.c' file, because the 'dtrace' command line tool generates a '.o' file directly from the dtrace probe definition file. The probe definition is usually named with a '.d' extension but QEMU uses '.d' files for its external makefile dependancy tracking, so this uses '.dtrace' as the extension for the probe definition file. The 'tracetool' program gains the ability to generate a trace.h file for DTrace, and also to generate the trace.d file containing the dtrace probe definition. Example usage of a dtrace probe in systemtap looks like: probe process("qemu").mark("qemu_malloc") { printf("Malloc %d %p\n", $arg1, $arg2); } * .gitignore: Ignore trace-dtrace.* * Makefile: Extra rules for generating DTrace files * Makefile.obj: Don't build trace.o for DTrace, use trace-dtrace.o generated by 'dtrace' instead * tracetool: Support for generating DTrace data files Reviewed-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: Daniel P. Berrange <berrange@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2010-11-12 14:20:24 +01:00
sep="$2"
for field in $(get_args "$1"); do
nfields=$((nfields + 1))
# Drop pointer star
field=${field#\*}
# Only argument names have commas at the end
name=${field%,}
test "$field" = "$name" && continue
Add a DTrace tracing backend targetted for SystemTAP compatability This introduces a new tracing backend that targets the SystemTAP implementation of DTrace userspace tracing. The core functionality should be applicable and standard across any DTrace implementation on Solaris, OS-X, *BSD, but the Makefile rules will likely need some small additional changes to cope with OS specific build requirements. This backend builds a little differently from the other tracing backends. Specifically there is no 'trace.c' file, because the 'dtrace' command line tool generates a '.o' file directly from the dtrace probe definition file. The probe definition is usually named with a '.d' extension but QEMU uses '.d' files for its external makefile dependancy tracking, so this uses '.dtrace' as the extension for the probe definition file. The 'tracetool' program gains the ability to generate a trace.h file for DTrace, and also to generate the trace.d file containing the dtrace probe definition. Example usage of a dtrace probe in systemtap looks like: probe process("qemu").mark("qemu_malloc") { printf("Malloc %d %p\n", $arg1, $arg2); } * .gitignore: Ignore trace-dtrace.* * Makefile: Extra rules for generating DTrace files * Makefile.obj: Don't build trace.o for DTrace, use trace-dtrace.o generated by 'dtrace' instead * tracetool: Support for generating DTrace data files Reviewed-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: Daniel P. Berrange <berrange@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2010-11-12 14:20:24 +01:00
printf "%s%s " $name $sep
done
# Last argument name
if [ "$nfields" -gt 1 ]
then
printf "%s" "$name"
fi
}
# Get the number of arguments to a trace event
get_argc()
{
local name argc
argc=0
Add a DTrace tracing backend targetted for SystemTAP compatability This introduces a new tracing backend that targets the SystemTAP implementation of DTrace userspace tracing. The core functionality should be applicable and standard across any DTrace implementation on Solaris, OS-X, *BSD, but the Makefile rules will likely need some small additional changes to cope with OS specific build requirements. This backend builds a little differently from the other tracing backends. Specifically there is no 'trace.c' file, because the 'dtrace' command line tool generates a '.o' file directly from the dtrace probe definition file. The probe definition is usually named with a '.d' extension but QEMU uses '.d' files for its external makefile dependancy tracking, so this uses '.dtrace' as the extension for the probe definition file. The 'tracetool' program gains the ability to generate a trace.h file for DTrace, and also to generate the trace.d file containing the dtrace probe definition. Example usage of a dtrace probe in systemtap looks like: probe process("qemu").mark("qemu_malloc") { printf("Malloc %d %p\n", $arg1, $arg2); } * .gitignore: Ignore trace-dtrace.* * Makefile: Extra rules for generating DTrace files * Makefile.obj: Don't build trace.o for DTrace, use trace-dtrace.o generated by 'dtrace' instead * tracetool: Support for generating DTrace data files Reviewed-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: Daniel P. Berrange <berrange@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2010-11-12 14:20:24 +01:00
for name in $(get_argnames "$1", ","); do
argc=$((argc + 1))
done
echo $argc
}
# Get the format string for a trace event
get_fmt()
{
local fmt
fmt=${1#*\"}
fmt=${fmt%\"*}
echo "$fmt"
}
# Get the state of a trace event
get_state()
{
local str disable state
str=$(get_name "$1")
disable=${str##disable }
if [ "$disable" = "$str" ] ; then
state=1
else
state=0
fi
echo "$state"
}
linetoh_begin_nop()
{
return
}
linetoh_nop()
{
local name args
name=$(get_name "$1")
args=$(get_args "$1")
# Define an empty function for the trace event
cat <<EOF
static inline void trace_$name($args)
{
}
EOF
}
linetoh_end_nop()
{
return
}
linetoc_begin_nop()
{
return
}
linetoc_nop()
{
# No need for function definitions in nop backend
return
}
linetoc_end_nop()
{
return
}
linetoh_begin_simple()
{
cat <<EOF
#include "simpletrace.h"
EOF
simple_event_num=0
}
cast_args_to_uint64_t()
{
local arg
Add a DTrace tracing backend targetted for SystemTAP compatability This introduces a new tracing backend that targets the SystemTAP implementation of DTrace userspace tracing. The core functionality should be applicable and standard across any DTrace implementation on Solaris, OS-X, *BSD, but the Makefile rules will likely need some small additional changes to cope with OS specific build requirements. This backend builds a little differently from the other tracing backends. Specifically there is no 'trace.c' file, because the 'dtrace' command line tool generates a '.o' file directly from the dtrace probe definition file. The probe definition is usually named with a '.d' extension but QEMU uses '.d' files for its external makefile dependancy tracking, so this uses '.dtrace' as the extension for the probe definition file. The 'tracetool' program gains the ability to generate a trace.h file for DTrace, and also to generate the trace.d file containing the dtrace probe definition. Example usage of a dtrace probe in systemtap looks like: probe process("qemu").mark("qemu_malloc") { printf("Malloc %d %p\n", $arg1, $arg2); } * .gitignore: Ignore trace-dtrace.* * Makefile: Extra rules for generating DTrace files * Makefile.obj: Don't build trace.o for DTrace, use trace-dtrace.o generated by 'dtrace' instead * tracetool: Support for generating DTrace data files Reviewed-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: Daniel P. Berrange <berrange@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2010-11-12 14:20:24 +01:00
for arg in $(get_argnames "$1", ","); do
printf "%s" "(uint64_t)(uintptr_t)$arg"
done
}
linetoh_simple()
{
local name args argc trace_args state
name=$(get_name "$1")
args=$(get_args "$1")
argc=$(get_argc "$1")
state=$(get_state "$1")
if [ "$state" = "0" ]; then
name=${name##disable }
fi
trace_args="$simple_event_num"
if [ "$argc" -gt 0 ]
then
trace_args="$trace_args, $(cast_args_to_uint64_t "$1")"
fi
cat <<EOF
static inline void trace_$name($args)
{
trace$argc($trace_args);
}
EOF
simple_event_num=$((simple_event_num + 1))
}
linetoh_end_simple()
{
cat <<EOF
#define NR_TRACE_EVENTS $simple_event_num
extern TraceEvent trace_list[NR_TRACE_EVENTS];
EOF
}
linetoc_begin_simple()
{
cat <<EOF
#include "trace.h"
TraceEvent trace_list[] = {
EOF
simple_event_num=0
}
linetoc_simple()
{
local name state
name=$(get_name "$1")
state=$(get_state "$1")
if [ "$state" = "0" ] ; then
name=${name##disable }
fi
cat <<EOF
{.tp_name = "$name", .state=$state},
EOF
simple_event_num=$((simple_event_num + 1))
}
linetoc_end_simple()
{
cat <<EOF
};
EOF
}
#STDERR
linetoh_begin_stderr()
{
cat <<EOF
#include <stdio.h>
EOF
}
linetoh_stderr()
{
local name args argnames argc fmt
name=$(get_name "$1")
args=$(get_args "$1")
argnames=$(get_argnames "$1" ",")
argc=$(get_argc "$1")
fmt=$(get_fmt "$1")
if [ "$argc" -gt 0 ]; then
argnames=", $argnames"
fi
cat <<EOF
static inline void trace_$name($args)
{
fprintf(stderr, "$name $fmt\n" $argnames);
}
EOF
}
linetoh_end_stderr()
{
return
}
linetoc_begin_stderr()
{
return
}
linetoc_stderr()
{
return
}
linetoc_end_stderr()
{
return
}
#END OF STDERR
# Clean up after UST headers which pollute the namespace
ust_clean_namespace() {
cat <<EOF
#undef mutex_lock
#undef mutex_unlock
#undef inline
#undef wmb
EOF
}
linetoh_begin_ust()
{
echo "#include <ust/tracepoint.h>"
ust_clean_namespace
}
linetoh_ust()
{
local name args argnames
name=$(get_name "$1")
args=$(get_args "$1")
Add a DTrace tracing backend targetted for SystemTAP compatability This introduces a new tracing backend that targets the SystemTAP implementation of DTrace userspace tracing. The core functionality should be applicable and standard across any DTrace implementation on Solaris, OS-X, *BSD, but the Makefile rules will likely need some small additional changes to cope with OS specific build requirements. This backend builds a little differently from the other tracing backends. Specifically there is no 'trace.c' file, because the 'dtrace' command line tool generates a '.o' file directly from the dtrace probe definition file. The probe definition is usually named with a '.d' extension but QEMU uses '.d' files for its external makefile dependancy tracking, so this uses '.dtrace' as the extension for the probe definition file. The 'tracetool' program gains the ability to generate a trace.h file for DTrace, and also to generate the trace.d file containing the dtrace probe definition. Example usage of a dtrace probe in systemtap looks like: probe process("qemu").mark("qemu_malloc") { printf("Malloc %d %p\n", $arg1, $arg2); } * .gitignore: Ignore trace-dtrace.* * Makefile: Extra rules for generating DTrace files * Makefile.obj: Don't build trace.o for DTrace, use trace-dtrace.o generated by 'dtrace' instead * tracetool: Support for generating DTrace data files Reviewed-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: Daniel P. Berrange <berrange@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2010-11-12 14:20:24 +01:00
argnames=$(get_argnames "$1", ",")
cat <<EOF
DECLARE_TRACE(ust_$name, TP_PROTO($args), TP_ARGS($argnames));
#define trace_$name trace_ust_$name
EOF
}
linetoh_end_ust()
{
return
}
linetoc_begin_ust()
{
cat <<EOF
#include <ust/marker.h>
$(ust_clean_namespace)
#include "trace.h"
EOF
}
linetoc_ust()
{
local name args argnames fmt
name=$(get_name "$1")
args=$(get_args "$1")
Add a DTrace tracing backend targetted for SystemTAP compatability This introduces a new tracing backend that targets the SystemTAP implementation of DTrace userspace tracing. The core functionality should be applicable and standard across any DTrace implementation on Solaris, OS-X, *BSD, but the Makefile rules will likely need some small additional changes to cope with OS specific build requirements. This backend builds a little differently from the other tracing backends. Specifically there is no 'trace.c' file, because the 'dtrace' command line tool generates a '.o' file directly from the dtrace probe definition file. The probe definition is usually named with a '.d' extension but QEMU uses '.d' files for its external makefile dependancy tracking, so this uses '.dtrace' as the extension for the probe definition file. The 'tracetool' program gains the ability to generate a trace.h file for DTrace, and also to generate the trace.d file containing the dtrace probe definition. Example usage of a dtrace probe in systemtap looks like: probe process("qemu").mark("qemu_malloc") { printf("Malloc %d %p\n", $arg1, $arg2); } * .gitignore: Ignore trace-dtrace.* * Makefile: Extra rules for generating DTrace files * Makefile.obj: Don't build trace.o for DTrace, use trace-dtrace.o generated by 'dtrace' instead * tracetool: Support for generating DTrace data files Reviewed-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: Daniel P. Berrange <berrange@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2010-11-12 14:20:24 +01:00
argnames=$(get_argnames "$1", ",")
[ -z "$argnames" ] || argnames=", $argnames"
fmt=$(get_fmt "$1")
cat <<EOF
DEFINE_TRACE(ust_$name);
static void ust_${name}_probe($args)
{
trace_mark(ust, $name, "$fmt"$argnames);
}
EOF
# Collect names for later
names="$names $name"
}
linetoc_end_ust()
{
cat <<EOF
static void __attribute__((constructor)) trace_init(void)
{
EOF
for name in $names; do
cat <<EOF
register_trace_ust_$name(ust_${name}_probe);
EOF
done
echo "}"
}
Add a DTrace tracing backend targetted for SystemTAP compatability This introduces a new tracing backend that targets the SystemTAP implementation of DTrace userspace tracing. The core functionality should be applicable and standard across any DTrace implementation on Solaris, OS-X, *BSD, but the Makefile rules will likely need some small additional changes to cope with OS specific build requirements. This backend builds a little differently from the other tracing backends. Specifically there is no 'trace.c' file, because the 'dtrace' command line tool generates a '.o' file directly from the dtrace probe definition file. The probe definition is usually named with a '.d' extension but QEMU uses '.d' files for its external makefile dependancy tracking, so this uses '.dtrace' as the extension for the probe definition file. The 'tracetool' program gains the ability to generate a trace.h file for DTrace, and also to generate the trace.d file containing the dtrace probe definition. Example usage of a dtrace probe in systemtap looks like: probe process("qemu").mark("qemu_malloc") { printf("Malloc %d %p\n", $arg1, $arg2); } * .gitignore: Ignore trace-dtrace.* * Makefile: Extra rules for generating DTrace files * Makefile.obj: Don't build trace.o for DTrace, use trace-dtrace.o generated by 'dtrace' instead * tracetool: Support for generating DTrace data files Reviewed-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: Daniel P. Berrange <berrange@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2010-11-12 14:20:24 +01:00
linetoh_begin_dtrace()
{
cat <<EOF
#include "trace-dtrace.h"
EOF
}
linetoh_dtrace()
{
local name args argnames state nameupper
name=$(get_name "$1")
args=$(get_args "$1")
argnames=$(get_argnames "$1", ",")
state=$(get_state "$1")
if [ "$state" = "0" ] ; then
name=${name##disable }
fi
nameupper=`echo $name | tr '[:lower:]' '[:upper:]'`
# Define an empty function for the trace event
cat <<EOF
static inline void trace_$name($args) {
if (QEMU_${nameupper}_ENABLED()) {
QEMU_${nameupper}($argnames);
}
}
EOF
}
linetoh_end_dtrace()
{
return
}
linetoc_begin_dtrace()
{
return
}
linetoc_dtrace()
{
# No need for function definitions in dtrace backend
return
}
linetoc_end_dtrace()
{
return
}
linetod_begin_dtrace()
{
cat <<EOF
provider qemu {
EOF
}
linetod_dtrace()
{
local name args state
name=$(get_name "$1")
args=$(get_args "$1")
state=$(get_state "$1")
if [ "$state" = "0" ] ; then
name=${name##disable }
fi
# DTrace provider syntax expects foo() for empty
# params, not foo(void)
if [ "$args" = "void" ]; then
args=""
fi
# Define prototype for probe arguments
cat <<EOF
probe $name($args);
EOF
}
linetod_end_dtrace()
{
cat <<EOF
};
EOF
}
linetostap_begin_dtrace()
{
return
}
linetostap_dtrace()
{
local i arg name args arglist state
name=$(get_name "$1")
args=$(get_args "$1")
arglist=$(get_argnames "$1", "")
state=$(get_state "$1")
if [ "$state" = "0" ] ; then
name=${name##disable }
fi
# Define prototype for probe arguments
cat <<EOF
probe $probeprefix.$name = process("$binary").mark("$name")
{
EOF
i=1
for arg in $arglist
do
# 'limit' is a reserved keyword
if [ "$arg" = "limit" ]; then
arg="_limit"
fi
cat <<EOF
$arg = \$arg$i;
EOF
i="$((i+1))"
done
cat <<EOF
}
EOF
}
linetostap_end_dtrace()
{
return
}
# Process stdin by calling begin, line, and end functions for the backend
convert()
{
local begin process_line end str disable
begin="lineto$1_begin_$backend"
process_line="lineto$1_$backend"
end="lineto$1_end_$backend"
"$begin"
while read -r str; do
# Skip comments and empty lines
test -z "${str%%#*}" && continue
# Process the line. The nop backend handles disabled lines.
disable=${str%%disable *}
echo
if test -z "$disable"; then
Add a DTrace tracing backend targetted for SystemTAP compatability This introduces a new tracing backend that targets the SystemTAP implementation of DTrace userspace tracing. The core functionality should be applicable and standard across any DTrace implementation on Solaris, OS-X, *BSD, but the Makefile rules will likely need some small additional changes to cope with OS specific build requirements. This backend builds a little differently from the other tracing backends. Specifically there is no 'trace.c' file, because the 'dtrace' command line tool generates a '.o' file directly from the dtrace probe definition file. The probe definition is usually named with a '.d' extension but QEMU uses '.d' files for its external makefile dependancy tracking, so this uses '.dtrace' as the extension for the probe definition file. The 'tracetool' program gains the ability to generate a trace.h file for DTrace, and also to generate the trace.d file containing the dtrace probe definition. Example usage of a dtrace probe in systemtap looks like: probe process("qemu").mark("qemu_malloc") { printf("Malloc %d %p\n", $arg1, $arg2); } * .gitignore: Ignore trace-dtrace.* * Makefile: Extra rules for generating DTrace files * Makefile.obj: Don't build trace.o for DTrace, use trace-dtrace.o generated by 'dtrace' instead * tracetool: Support for generating DTrace data files Reviewed-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: Daniel P. Berrange <berrange@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2010-11-12 14:20:24 +01:00
# Pass the disabled state as an arg for the simple
# or DTrace backends which handle it dynamically.
# For all other backends, call lineto$1_nop()
if [ $backend = "simple" -o "$backend" = "dtrace" ]; then
"$process_line" "$str"
else
"lineto$1_nop" "${str##disable }"
fi
else
"$process_line" "$str"
fi
done
echo
"$end"
}
tracetoh()
{
cat <<EOF
#ifndef TRACE_H
#define TRACE_H
/* This file is autogenerated by tracetool, do not edit. */
#include "qemu-common.h"
EOF
convert h
echo "#endif /* TRACE_H */"
}
tracetoc()
{
echo "/* This file is autogenerated by tracetool, do not edit. */"
convert c
}
Add a DTrace tracing backend targetted for SystemTAP compatability This introduces a new tracing backend that targets the SystemTAP implementation of DTrace userspace tracing. The core functionality should be applicable and standard across any DTrace implementation on Solaris, OS-X, *BSD, but the Makefile rules will likely need some small additional changes to cope with OS specific build requirements. This backend builds a little differently from the other tracing backends. Specifically there is no 'trace.c' file, because the 'dtrace' command line tool generates a '.o' file directly from the dtrace probe definition file. The probe definition is usually named with a '.d' extension but QEMU uses '.d' files for its external makefile dependancy tracking, so this uses '.dtrace' as the extension for the probe definition file. The 'tracetool' program gains the ability to generate a trace.h file for DTrace, and also to generate the trace.d file containing the dtrace probe definition. Example usage of a dtrace probe in systemtap looks like: probe process("qemu").mark("qemu_malloc") { printf("Malloc %d %p\n", $arg1, $arg2); } * .gitignore: Ignore trace-dtrace.* * Makefile: Extra rules for generating DTrace files * Makefile.obj: Don't build trace.o for DTrace, use trace-dtrace.o generated by 'dtrace' instead * tracetool: Support for generating DTrace data files Reviewed-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: Daniel P. Berrange <berrange@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2010-11-12 14:20:24 +01:00
tracetod()
{
if [ $backend != "dtrace" ]; then
echo "DTrace probe generator not applicable to $backend backend"
exit 1
fi
echo "/* This file is autogenerated by tracetool, do not edit. */"
convert d
}
tracetostap()
{
if [ $backend != "dtrace" ]; then
echo "SystemTAP tapset generator not applicable to $backend backend"
exit 1
fi
if [ -z "$binary" ]; then
echo "--binary is required for SystemTAP tapset generator"
exit 1
fi
if [ -z "$probeprefix" -a -z "$targettype" ]; then
echo "--target-type is required for SystemTAP tapset generator"
exit 1
fi
if [ -z "$probeprefix" -a -z "$targetarch" ]; then
echo "--target-arch is required for SystemTAP tapset generator"
exit 1
fi
if [ -z "$probeprefix" ]; then
probeprefix="qemu.$targettype.$targetarch";
fi
echo "/* This file is autogenerated by tracetool, do not edit. */"
convert stap
}
backend=
output=
binary=
targettype=
targetarch=
probeprefix=
until [ -z "$1" ]
do
case "$1" in
"--nop" | "--simple" | "--stderr" | "--ust" | "--dtrace") backend="${1#--}" ;;
"--binary") shift ; binary="$1" ;;
"--target-arch") shift ; targetarch="$1" ;;
"--target-type") shift ; targettype="$1" ;;
"--probe-prefix") shift ; probeprefix="$1" ;;
"-h" | "-c" | "-d") output="${1#-}" ;;
"--stap") output="${1#--}" ;;
"--check-backend") exit 0 ;; # used by ./configure to test for backend
"--list-backends") # used by ./configure to list available backends
echo "nop simple stderr ust dtrace"
exit 0
;;
*)
usage;;
esac
shift
done
if [ "$backend" = "" -o "$output" = "" ]; then
usage
fi
gen="traceto$output"
"$gen"
exit 0