diff options
Diffstat (limited to 'tools/bootconfig/scripts/bconf2ftrace.sh')
| -rwxr-xr-x | tools/bootconfig/scripts/bconf2ftrace.sh | 199 |
1 files changed, 199 insertions, 0 deletions
diff --git a/tools/bootconfig/scripts/bconf2ftrace.sh b/tools/bootconfig/scripts/bconf2ftrace.sh new file mode 100755 index 000000000000..595e164dc352 --- /dev/null +++ b/tools/bootconfig/scripts/bconf2ftrace.sh @@ -0,0 +1,199 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0-only + +usage() { + echo "Ftrace boottime trace test tool" + echo "Usage: $0 [--apply|--init] [--debug] BOOTCONFIG-FILE" + echo " --apply: Test actual apply to tracefs (need sudo)" + echo " --init: Initialize ftrace before applying (imply --apply)" + exit 1 +} + +[ $# -eq 0 ] && usage + +BCONF= +DEBUG= +APPLY= +INIT= +while [ x"$1" != x ]; do + case "$1" in + "--debug") + DEBUG=$1;; + "--apply") + APPLY=$1;; + "--init") + APPLY=$1 + INIT=$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 $TRACEFS ]; then + echo "Error: ftrace is not enabled on this kernel." 1>&2 + exit 1 + fi +fi + +if [ x"$INIT" != x ]; then + . `dirname $0`/ftrace.sh + (cd $TRACEFS; initialize_ftrace) +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 + |