--- /dev/null
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0-only
+
+usage() {
+ echo "Ftrace boottime trace test tool"
+ echo "Usage: $0 [--apply] [--debug] BOOTCONFIG-FILE"
+ echo " --apply: Test actual apply to tracefs (need sudo)"
+ exit 1
+}
+
+[ $# -eq 0 ] && usage
+
+BCONF=
+DEBUG=
+APPLY=
+while [ x"$1" != x ]; do
+ case "$1" in
+ "--debug")
+ DEBUG=$1;;
+ "--apply")
+ APPLY=$1;;
+ *)
+ [ ! -f $1 ] && usage
+ BCONF=$1;;
+ esac
+ shift 1
+done
+
+if [ x"$APPLY" != x ]; then
+ if [ `id -u` -ne 0 ]; then
+ echo "This must be run by root user. Try sudo." 1>&2
+ exec sudo $0 $DEBUG $APPLY $BCONF
+ fi
+fi
+
+run_cmd() { # command
+ echo "$*"
+ if [ x"$APPLY" != x ]; then # apply command
+ eval $*
+ fi
+}
+
+if [ x"$DEBUG" != x ]; then
+ set -x
+fi
+
+TRACEFS=`grep -m 1 -w tracefs /proc/mounts | cut -f 2 -d " "`
+if [ -z "$TRACEFS" ]; then
+ if ! grep -wq debugfs /proc/mounts; then
+ echo "Error: No tracefs/debugfs was mounted." 1>&2
+ exit 1
+ fi
+ TRACEFS=`grep -m 1 -w debugfs /proc/mounts | cut -f 2 -d " "`/tracing
+ if [ ! -d $TRACEFS ]; then
+ echo "Error: ftrace is not enabled on this kernel." 1>&2
+ exit 1
+ fi
+fi
+
+. `dirname $0`/xbc.sh
+
+######## main #########
+set -e
+
+xbc_init $BCONF
+
+set_value_of() { # key file
+ if xbc_has_key $1; then
+ val=`xbc_get_val $1 1`
+ run_cmd "echo '$val' >> $2"
+ fi
+}
+
+set_array_of() { # key file
+ if xbc_has_key $1; then
+ xbc_get_val $1 | while read line; do
+ run_cmd "echo '$line' >> $2"
+ done
+ fi
+}
+
+compose_synth() { # event_name branch
+ echo -n "$1 "
+ xbc_get_val $2 | while read field; do echo -n "$field; "; done
+}
+
+setup_event() { # prefix group event [instance]
+ branch=$1.$2.$3
+ if [ "$4" ]; then
+ eventdir="$TRACEFS/instances/$4/events/$2/$3"
+ else
+ eventdir="$TRACEFS/events/$2/$3"
+ fi
+ case $2 in
+ kprobes)
+ xbc_get_val ${branch}.probes | while read line; do
+ run_cmd "echo 'p:kprobes/$3 $line' >> $TRACEFS/kprobe_events"
+ done
+ ;;
+ synthetic)
+ run_cmd "echo '`compose_synth $3 ${branch}.fields`' >> $TRACEFS/synthetic_events"
+ ;;
+ esac
+
+ set_value_of ${branch}.filter ${eventdir}/filter
+ set_array_of ${branch}.actions ${eventdir}/trigger
+
+ if xbc_has_key ${branch}.enable; then
+ run_cmd "echo 1 > ${eventdir}/enable"
+ fi
+}
+
+setup_events() { # prefix("ftrace" or "ftrace.instance.INSTANCE") [instance]
+ prefix="${1}.event"
+ if xbc_has_branch ${1}.event; then
+ for grpev in `xbc_subkeys ${1}.event 2`; do
+ setup_event $prefix ${grpev%.*} ${grpev#*.} $2
+ done
+ fi
+}
+
+size2kb() { # size[KB|MB]
+ case $1 in
+ *KB)
+ echo ${1%KB};;
+ *MB)
+ expr ${1%MB} \* 1024;;
+ *)
+ expr $1 / 1024 ;;
+ esac
+}
+
+setup_instance() { # [instance]
+ if [ "$1" ]; then
+ instance="ftrace.instance.${1}"
+ instancedir=$TRACEFS/instances/$1
+ else
+ instance="ftrace"
+ instancedir=$TRACEFS
+ fi
+
+ set_array_of ${instance}.options ${instancedir}/trace_options
+ set_value_of ${instance}.trace_clock ${instancedir}/trace_clock
+ set_value_of ${instance}.cpumask ${instancedir}/tracing_cpumask
+ set_value_of ${instance}.tracer ${instancedir}/current_tracer
+ set_array_of ${instance}.ftrace.filters \
+ ${instancedir}/set_ftrace_filter
+ set_array_of ${instance}.ftrace.notrace \
+ ${instancedir}/set_ftrace_notrace
+
+ if xbc_has_key ${instance}.alloc_snapshot; then
+ run_cmd "echo 1 > ${instancedir}/snapshot"
+ fi
+
+ if xbc_has_key ${instance}.buffer_size; then
+ size=`xbc_get_val ${instance}.buffer_size 1`
+ size=`eval size2kb $size`
+ run_cmd "echo $size >> ${instancedir}/buffer_size_kb"
+ fi
+
+ setup_events ${instance} $1
+ set_array_of ${instance}.events ${instancedir}/set_event
+}
+
+# ftrace global configs (kernel.*)
+if xbc_has_key "kernel.dump_on_oops"; then
+ dump_mode=`xbc_get_val "kernel.dump_on_oops" 1`
+ [ "$dump_mode" ] && dump_mode=`eval echo $dump_mode` || dump_mode=1
+ run_cmd "echo \"$dump_mode\" > /proc/sys/kernel/ftrace_dump_on_oops"
+fi
+
+set_value_of kernel.fgraph_max_depth $TRACEFS/max_graph_depth
+set_array_of kernel.fgraph_filters $TRACEFS/set_graph_function
+set_array_of kernel.fgraph_notraces $TRACEFS/set_graph_notrace
+
+# Per-instance/per-event configs
+if ! xbc_has_branch "ftrace" ; then
+ exit 0
+fi
+
+setup_instance # root instance
+
+if xbc_has_branch "ftrace.instance"; then
+ for i in `xbc_subkeys "ftrace.instance" 1`; do
+ run_cmd "mkdir -p $TRACEFS/instances/$i"
+ setup_instance $i
+ done
+fi
+
--- /dev/null
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0-only
+
+# bootconfig utility functions
+
+XBC_TMPFILE=
+XBC_BASEDIR=`dirname $0`
+BOOTCONFIG=${BOOTCONFIG:=$XBC_BASEDIR/../bootconfig}
+if [ ! -x "$BOOTCONFIG" ]; then
+ BOOTCONFIG=`which bootconfig`
+ if [ -z "$BOOTCONFIG" ]; then
+ echo "Erorr: bootconfig command is not found" 1>&2
+ exit 1
+ fi
+fi
+
+xbc_cleanup() {
+ if [ "$XBC_TMPFILE" ]; then
+ rm -f "$XBC_TMPFILE"
+ fi
+}
+
+xbc_init() { # bootconfig-file
+ xbc_cleanup
+ XBC_TMPFILE=`mktemp bconf-XXXX`
+ trap xbc_cleanup EXIT TERM
+
+ $BOOTCONFIG -l $1 > $XBC_TMPFILE || exit 1
+}
+
+nr_args() { # args
+ echo $#
+}
+
+xbc_get_val() { # key [maxnum]
+ if [ "$2" ]; then
+ MAXOPT="-L $2"
+ fi
+ grep "^$1 =" $XBC_TMPFILE | cut -d= -f2- | \
+ sed -e 's/", /" /g' -e "s/',/' /g" | \
+ xargs $MAXOPT -n 1 echo
+}
+
+xbc_has_key() { # key
+ grep -q "^$1 =" $XBC_TMPFILE
+}
+
+xbc_has_branch() { # prefix-key
+ grep -q "^$1" $XBC_TMPFILE
+}
+
+xbc_subkeys() { # prefix-key depth
+ __keys=`echo $1 | sed "s/\./ /g"`
+ __s=`nr_args $__keys`
+ grep "^$1" $XBC_TMPFILE | cut -d= -f1| cut -d. -f$((__s + 1))-$((__s + $2)) | uniq
+}
projects / users / jedix / linux-maple.git / commitdiff