tools/testing/selftests/ftrace/test.d/kprobe/kprobe_multiprobe.tc

   1 #!/bin/sh
   2 # SPDX-License-Identifier: GPL-2.0
   3 # description: Create/delete multiprobe on kprobe event
   4 # requires: kprobe_events "Create/append/":README
   5
   6 # Choose 2 symbols for target
   7 SYM1=$FUNCTION_FORK
   8 SYM2=do_exit
   9 EVENT_NAME=kprobes/testevent
  10
  11 DEF1="p:$EVENT_NAME $SYM1"
  12 DEF2="p:$EVENT_NAME $SYM2"
  13
  14 :;: "Define an event which has 2 probes" ;:
  15 echo $DEF1 >> kprobe_events
  16 echo $DEF2 >> kprobe_events
  17 cat kprobe_events | grep "$DEF1"
  18 cat kprobe_events | grep "$DEF2"
  19
  20 :;: "Remove the event by name (should remove both)" ;:
  21 echo "-:$EVENT_NAME" >> kprobe_events
  22 test `cat kprobe_events | wc -l` -eq 0
  23
  24 :;: "Remove just 1 event" ;:
  25 echo $DEF1 >> kprobe_events
  26 echo $DEF2 >> kprobe_events
  27 echo "-:$EVENT_NAME $SYM1" >> kprobe_events
  28 ! cat kprobe_events | grep "$DEF1"
  29 cat kprobe_events | grep "$DEF2"
  30
  31 :;: "Appending different type must fail" ;:
  32 ! echo "$DEF1 \$stack" >> kprobe_events