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-rwxr-xr-xtools/bootconfig/scripts/bconf2ftrace.sh301
1 files changed, 301 insertions, 0 deletions
diff --git a/tools/bootconfig/scripts/bconf2ftrace.sh b/tools/bootconfig/scripts/bconf2ftrace.sh
new file mode 100755
index 000000000..850c20734
--- /dev/null
+++ b/tools/bootconfig/scripts/bconf2ftrace.sh
@@ -0,0 +1,301 @@
+#!/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
+}
+
+print_hist_array() { # prefix key
+ __sep="="
+ if xbc_has_key ${1}.${2}; then
+ echo -n ":$2"
+ xbc_get_val ${1}.${2} | while read field; do
+ echo -n "$__sep$field"; __sep=","
+ done
+ fi
+}
+
+print_hist_action_array() { # prefix key
+ __sep="("
+ echo -n ".$2"
+ xbc_get_val ${1}.${2} | while read field; do
+ echo -n "$__sep$field"; __sep=","
+ done
+ echo -n ")"
+}
+
+print_hist_one_action() { # prefix handler param
+ echo -n ":${2}("`xbc_get_val ${1}.${3}`")"
+ if xbc_has_key "${1}.trace"; then
+ print_hist_action_array ${1} "trace"
+ elif xbc_has_key "${1}.save"; then
+ print_hist_action_array ${1} "save"
+ elif xbc_has_key "${1}.snapshot"; then
+ echo -n ".snapshot()"
+ fi
+}
+
+print_hist_actions() { # prefix handler param
+ for __hdr in `xbc_subkeys ${1}.${2} 1 ".[0-9]"`; do
+ print_hist_one_action ${1}.${2}.$__hdr ${2} ${3}
+ done
+ if xbc_has_key ${1}.${2}.${3} ; then
+ print_hist_one_action ${1}.${2} ${2} ${3}
+ fi
+}
+
+print_hist_var() { # prefix varname
+ echo -n ":${2}="`xbc_get_val ${1}.var.${2} | tr -d [:space:]`
+}
+
+print_one_histogram() { # prefix
+ echo -n "hist"
+ print_hist_array $1 "keys"
+ print_hist_array $1 "values"
+ print_hist_array $1 "sort"
+ if xbc_has_key "${1}.size"; then
+ echo -n ":size="`xbc_get_val ${1}.size`
+ fi
+ if xbc_has_key "${1}.name"; then
+ echo -n ":name="`xbc_get_val ${1}.name`
+ fi
+ for __var in `xbc_subkeys "${1}.var" 1`; do
+ print_hist_var ${1} ${__var}
+ done
+ if xbc_has_key "${1}.pause"; then
+ echo -n ":pause"
+ elif xbc_has_key "${1}.continue"; then
+ echo -n ":continue"
+ elif xbc_has_key "${1}.clear"; then
+ echo -n ":clear"
+ fi
+ print_hist_actions ${1} "onmax" "var"
+ print_hist_actions ${1} "onchange" "var"
+ print_hist_actions ${1} "onmatch" "event"
+
+ if xbc_has_key "${1}.filter"; then
+ echo -n " if "`xbc_get_val ${1}.filter`
+ fi
+}
+
+setup_one_histogram() { # prefix trigger-file
+ run_cmd "echo '`print_one_histogram ${1}`' >> ${2}"
+}
+
+setup_histograms() { # prefix trigger-file
+ for __hist in `xbc_subkeys ${1} 1 ".[0-9]"`; do
+ setup_one_histogram ${1}.$__hist ${2}
+ done
+ if xbc_has_key ${1}.keys; then
+ setup_one_histogram ${1} ${2}
+ fi
+}
+
+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
+ # group enable
+ if [ "$3" = "enable" ]; then
+ run_cmd "echo 1 > ${eventdir}"
+ return
+ 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
+
+ setup_histograms ${branch}.hist ${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
+ if xbc_has_branch ${1}.event.enable; then
+ if [ "$2" ]; then
+ run_cmd "echo 1 > $TRACEFS/instances/$2/events/enable"
+ else
+ run_cmd "echo 1 > $TRACEFS/events/enable"
+ fi
+ 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}.tracing_on ${instancedir}/tracing_on
+ 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
+