1 #!/bin/sh 1 #!/bin/sh
2 # SPDX-License-Identifier: GPL-2.0-only 2 # SPDX-License-Identifier: GPL-2.0-only
3 3
4 usage() { 4 usage() {
5 echo "Dump boot-time tracing bootconfi 5 echo "Dump boot-time tracing bootconfig from ftrace"
6 echo "Usage: $0 [--debug] [ > BOOTCONF 6 echo "Usage: $0 [--debug] [ > BOOTCONFIG-FILE]"
7 exit 1 7 exit 1
8 } 8 }
9 9
10 DEBUG= 10 DEBUG=
11 while [ x"$1" != x ]; do 11 while [ x"$1" != x ]; do
12 case "$1" in 12 case "$1" in
13 "--debug") 13 "--debug")
14 DEBUG=$1;; 14 DEBUG=$1;;
15 -*) 15 -*)
16 usage 16 usage
17 ;; 17 ;;
18 esac 18 esac
19 shift 1 19 shift 1
20 done 20 done
21 21
22 if [ x"$DEBUG" != x ]; then 22 if [ x"$DEBUG" != x ]; then
23 set -x 23 set -x
24 fi 24 fi
25 25
26 TRACEFS=`grep -m 1 -w tracefs /proc/mounts | c 26 TRACEFS=`grep -m 1 -w tracefs /proc/mounts | cut -f 2 -d " "`
27 if [ -z "$TRACEFS" ]; then 27 if [ -z "$TRACEFS" ]; then
28 if ! grep -wq debugfs /proc/mounts; th 28 if ! grep -wq debugfs /proc/mounts; then
29 echo "Error: No tracefs/debugf 29 echo "Error: No tracefs/debugfs was mounted."
30 exit 1 30 exit 1
31 fi 31 fi
32 TRACEFS=`grep -m 1 -w debugfs /proc/mo 32 TRACEFS=`grep -m 1 -w debugfs /proc/mounts | cut -f 2 -d " "`/tracing
33 if [ ! -d $TRACEFS ]; then 33 if [ ! -d $TRACEFS ]; then
34 echo "Error: ftrace is not ena 34 echo "Error: ftrace is not enabled on this kernel." 1>&2
35 exit 1 35 exit 1
36 fi 36 fi
37 fi 37 fi
38 38
39 ######## main ######### 39 ######## main #########
40 40
41 set -e 41 set -e
42 42
43 emit_kv() { # key =|+= value 43 emit_kv() { # key =|+= value
44 echo "$@" 44 echo "$@"
45 } 45 }
46 46
47 global_options() { 47 global_options() {
48 val=`cat $TRACEFS/max_graph_depth` 48 val=`cat $TRACEFS/max_graph_depth`
49 [ $val != 0 ] && emit_kv kernel.fgraph 49 [ $val != 0 ] && emit_kv kernel.fgraph_max_depth = $val
50 if grep -qv "^#" $TRACEFS/set_graph_fu 50 if grep -qv "^#" $TRACEFS/set_graph_function $TRACEFS/set_graph_notrace ; then
51 cat 1>&2 << EOF 51 cat 1>&2 << EOF
52 # WARN: kernel.fgraph_filters and kernel.fgrap 52 # WARN: kernel.fgraph_filters and kernel.fgraph_notrace are not supported, since the wild card expression was expanded and lost from memory.
53 EOF 53 EOF
54 fi 54 fi
55 } 55 }
56 56
57 kprobe_event_options() { 57 kprobe_event_options() {
58 cat $TRACEFS/kprobe_events | while rea 58 cat $TRACEFS/kprobe_events | while read p args; do
59 case $p in 59 case $p in
60 r*) 60 r*)
61 cat 1>&2 << EOF 61 cat 1>&2 << EOF
62 # WARN: A return probe found but it is not sup 62 # WARN: A return probe found but it is not supported by bootconfig. Skip it.
63 EOF 63 EOF
64 continue;; 64 continue;;
65 esac 65 esac
66 p=${p#*:} 66 p=${p#*:}
67 event=${p#*/} 67 event=${p#*/}
68 group=${p%/*} 68 group=${p%/*}
69 if [ $group != "kprobes" ]; th 69 if [ $group != "kprobes" ]; then
70 cat 1>&2 << EOF 70 cat 1>&2 << EOF
71 # WARN: kprobes group name $group is changed t 71 # WARN: kprobes group name $group is changed to "kprobes" for bootconfig.
72 EOF 72 EOF
73 fi 73 fi
74 emit_kv $PREFIX.event.kprobes. 74 emit_kv $PREFIX.event.kprobes.$event.probes += $args
75 done 75 done
76 } 76 }
77 77
78 synth_event_options() { 78 synth_event_options() {
79 cat $TRACEFS/synthetic_events | while 79 cat $TRACEFS/synthetic_events | while read event fields; do
80 emit_kv $PREFIX.event.syntheti 80 emit_kv $PREFIX.event.synthetic.$event.fields = `echo $fields | sed "s/;/,/g"`
81 done 81 done
82 } 82 }
83 83
84 # Variables resolver 84 # Variables resolver
85 DEFINED_VARS= 85 DEFINED_VARS=
86 UNRESOLVED_EVENTS= 86 UNRESOLVED_EVENTS=
87 87
88 defined_vars() { # event-dir 88 defined_vars() { # event-dir
89 grep "^hist" $1/trigger | grep -o ':[a 89 grep "^hist" $1/trigger | grep -o ':[a-zA-Z0-9]*='
90 } 90 }
91 referred_vars() { 91 referred_vars() {
92 grep "^hist" $1/trigger | grep -o '$[a 92 grep "^hist" $1/trigger | grep -o '$[a-zA-Z0-9]*'
93 } 93 }
94 94
95 event_is_enabled() { # enable-file <<
96 test -f $1 && grep -q "1" $1 <<
97 } <<
98 <<
99 per_event_options() { # event-dir 95 per_event_options() { # event-dir
100 evdir=$1 96 evdir=$1
101 # Check the special event which has no 97 # Check the special event which has no filter and no trigger
102 [ ! -f $evdir/filter ] && return 98 [ ! -f $evdir/filter ] && return
103 99
104 if grep -q "^hist:" $evdir/trigger; th 100 if grep -q "^hist:" $evdir/trigger; then
105 # hist action can refer the un 101 # hist action can refer the undefined variables
106 __vars=`defined_vars $evdir` 102 __vars=`defined_vars $evdir`
107 for v in `referred_vars $evdir 103 for v in `referred_vars $evdir`; do
108 if echo $DEFINED_VARS 104 if echo $DEFINED_VARS $__vars | grep -vqw ${v#$}; then
109 # $v is not de 105 # $v is not defined yet, defer it
110 UNRESOLVED_EVE 106 UNRESOLVED_EVENTS="$UNRESOLVED_EVENTS $evdir"
111 return; 107 return;
112 fi 108 fi
113 done 109 done
114 DEFINED_VARS="$DEFINED_VARS "` 110 DEFINED_VARS="$DEFINED_VARS "`defined_vars $evdir`
115 fi 111 fi
116 grep -v "^#" $evdir/trigger | while re 112 grep -v "^#" $evdir/trigger | while read action active; do
117 emit_kv $PREFIX.event.$group.$ 113 emit_kv $PREFIX.event.$group.$event.actions += \'$action\'
118 done 114 done
119 115
120 if [ $GROUP_ENABLED -eq 0 ] && event_i !! 116 # enable is not checked; this is done by set_event in the instance.
121 emit_kv $PREFIX.event.$group.$ <<
122 fi <<
123 val=`cat $evdir/filter` 117 val=`cat $evdir/filter`
124 if [ "$val" != "none" ]; then 118 if [ "$val" != "none" ]; then
125 emit_kv $PREFIX.event.$group.$ 119 emit_kv $PREFIX.event.$group.$event.filter = "$val"
126 fi 120 fi
127 } 121 }
128 122
129 retry_unresolved() { 123 retry_unresolved() {
130 unresolved=$UNRESOLVED_EVENTS 124 unresolved=$UNRESOLVED_EVENTS
131 UNRESOLVED_EVENTS= 125 UNRESOLVED_EVENTS=
132 for evdir in $unresolved; do 126 for evdir in $unresolved; do
133 event=${evdir##*/} 127 event=${evdir##*/}
134 group=${evdir%/*}; group=${gro 128 group=${evdir%/*}; group=${group##*/}
135 per_event_options $evdir 129 per_event_options $evdir
136 done 130 done
137 } 131 }
138 132
139 event_options() { 133 event_options() {
140 # PREFIX and INSTANCE must be set 134 # PREFIX and INSTANCE must be set
141 if [ $PREFIX = "ftrace" ]; then 135 if [ $PREFIX = "ftrace" ]; then
142 # define the dynamic events 136 # define the dynamic events
143 kprobe_event_options 137 kprobe_event_options
144 synth_event_options 138 synth_event_options
145 fi 139 fi
146 ALL_ENABLED=0 <<
147 if event_is_enabled $INSTANCE/events/e <<
148 emit_kv $PREFIX.event.enable <<
149 ALL_ENABLED=1 <<
150 fi <<
151 for group in `ls $INSTANCE/events/` ; 140 for group in `ls $INSTANCE/events/` ; do
152 [ ! -d $INSTANCE/events/$group 141 [ ! -d $INSTANCE/events/$group ] && continue
153 GROUP_ENABLED=$ALL_ENABLED <<
154 if [ $ALL_ENABLED -eq 0 ] && \ <<
155 event_is_enabled $INSTANCE/ <<
156 emit_kv $PREFIX.event. <<
157 GROUP_ENABLED=1 <<
158 fi <<
159 for event in `ls $INSTANCE/eve 142 for event in `ls $INSTANCE/events/$group/` ;do
160 [ ! -d $INSTANCE/event 143 [ ! -d $INSTANCE/events/$group/$event ] && continue
161 per_event_options $INS 144 per_event_options $INSTANCE/events/$group/$event
162 done 145 done
163 done 146 done
164 retry=0 147 retry=0
165 while [ $retry -lt 3 ]; do 148 while [ $retry -lt 3 ]; do
166 retry_unresolved 149 retry_unresolved
167 retry=$((retry + 1)) 150 retry=$((retry + 1))
168 done 151 done
169 if [ "$UNRESOLVED_EVENTS" ]; then 152 if [ "$UNRESOLVED_EVENTS" ]; then
170 cat 1>&2 << EOF 153 cat 1>&2 << EOF
171 ! ERROR: hist triggers in $UNRESOLVED_EVENTS u 154 ! ERROR: hist triggers in $UNRESOLVED_EVENTS use some undefined variables.
172 EOF 155 EOF
173 fi 156 fi
174 } 157 }
175 158
176 is_default_trace_option() { # option 159 is_default_trace_option() { # option
177 grep -qw $1 << EOF 160 grep -qw $1 << EOF
178 print-parent 161 print-parent
179 nosym-offset 162 nosym-offset
180 nosym-addr 163 nosym-addr
181 noverbose 164 noverbose
182 noraw 165 noraw
183 nohex 166 nohex
184 nobin 167 nobin
185 noblock 168 noblock
186 trace_printk 169 trace_printk
187 annotate 170 annotate
188 nouserstacktrace 171 nouserstacktrace
189 nosym-userobj 172 nosym-userobj
190 noprintk-msg-only 173 noprintk-msg-only
191 context-info 174 context-info
192 nolatency-format 175 nolatency-format
193 record-cmd 176 record-cmd
194 norecord-tgid 177 norecord-tgid
195 overwrite 178 overwrite
196 nodisable_on_free 179 nodisable_on_free
197 irq-info 180 irq-info
198 markers 181 markers
199 noevent-fork 182 noevent-fork
200 nopause-on-trace 183 nopause-on-trace
201 function-trace 184 function-trace
202 nofunction-fork 185 nofunction-fork
203 nodisplay-graph 186 nodisplay-graph
204 nostacktrace 187 nostacktrace
205 notest_nop_accept 188 notest_nop_accept
206 notest_nop_refuse 189 notest_nop_refuse
207 EOF 190 EOF
208 } 191 }
209 192
210 instance_options() { # [instance-name] 193 instance_options() { # [instance-name]
211 if [ $# -eq 0 ]; then 194 if [ $# -eq 0 ]; then
212 PREFIX="ftrace" 195 PREFIX="ftrace"
213 INSTANCE=$TRACEFS 196 INSTANCE=$TRACEFS
214 else 197 else
215 PREFIX="ftrace.instance.$1" 198 PREFIX="ftrace.instance.$1"
216 INSTANCE=$TRACEFS/instances/$1 199 INSTANCE=$TRACEFS/instances/$1
217 fi 200 fi
218 val= 201 val=
219 for i in `cat $INSTANCE/trace_options` 202 for i in `cat $INSTANCE/trace_options`; do
220 is_default_trace_option $i && 203 is_default_trace_option $i && continue
221 val="$val, $i" 204 val="$val, $i"
222 done 205 done
223 [ "$val" ] && emit_kv $PREFIX.options 206 [ "$val" ] && emit_kv $PREFIX.options = "${val#,}"
224 val="local" 207 val="local"
225 for i in `cat $INSTANCE/trace_clock` ; 208 for i in `cat $INSTANCE/trace_clock` ; do
226 [ "${i#*]}" ] && continue 209 [ "${i#*]}" ] && continue
227 i=${i%]}; val=${i#[} 210 i=${i%]}; val=${i#[}
228 done 211 done
229 [ $val != "local" ] && emit_kv $PREFIX 212 [ $val != "local" ] && emit_kv $PREFIX.trace_clock = $val
230 val=`cat $INSTANCE/buffer_size_kb` 213 val=`cat $INSTANCE/buffer_size_kb`
231 if echo $val | grep -vq "expanded" ; t 214 if echo $val | grep -vq "expanded" ; then
232 emit_kv $PREFIX.buffer_size = 215 emit_kv $PREFIX.buffer_size = $val"KB"
233 fi 216 fi
234 if grep -q "is allocated" $INSTANCE/sn 217 if grep -q "is allocated" $INSTANCE/snapshot ; then
235 emit_kv $PREFIX.alloc_snapshot 218 emit_kv $PREFIX.alloc_snapshot
236 fi 219 fi
237 val=`cat $INSTANCE/tracing_cpumask` 220 val=`cat $INSTANCE/tracing_cpumask`
238 if [ `echo $val | sed -e s/f//g`x != x 221 if [ `echo $val | sed -e s/f//g`x != x ]; then
239 emit_kv $PREFIX.cpumask = $val 222 emit_kv $PREFIX.cpumask = $val
240 fi 223 fi
241 val=`cat $INSTANCE/tracing_on` 224 val=`cat $INSTANCE/tracing_on`
242 if [ "$val" = "0" ]; then 225 if [ "$val" = "0" ]; then
243 emit_kv $PREFIX.tracing_on = 0 226 emit_kv $PREFIX.tracing_on = 0
244 fi 227 fi
245 228
>> 229 val=
>> 230 for i in `cat $INSTANCE/set_event`; do
>> 231 val="$val, $i"
>> 232 done
>> 233 [ "$val" ] && emit_kv $PREFIX.events = "${val#,}"
246 val=`cat $INSTANCE/current_tracer` 234 val=`cat $INSTANCE/current_tracer`
247 [ $val != nop ] && emit_kv $PREFIX.tra 235 [ $val != nop ] && emit_kv $PREFIX.tracer = $val
248 if grep -qv "^#" $INSTANCE/set_ftrace_ 236 if grep -qv "^#" $INSTANCE/set_ftrace_filter $INSTANCE/set_ftrace_notrace; then
249 cat 1>&2 << EOF 237 cat 1>&2 << EOF
250 # WARN: kernel.ftrace.filters and kernel.ftrac 238 # WARN: kernel.ftrace.filters and kernel.ftrace.notrace are not supported, since the wild card expression was expanded and lost from memory.
251 EOF 239 EOF
252 fi 240 fi
253 event_options 241 event_options
254 } 242 }
255 243
256 global_options 244 global_options
257 instance_options 245 instance_options
258 for i in `ls $TRACEFS/instances` ; do 246 for i in `ls $TRACEFS/instances` ; do
259 instance_options $i 247 instance_options $i
260 done 248 done
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