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

Source file repositories/reference/linux-study-clean/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_multiprobe.tc

File Facts

System
Linux kernel
Corpus path
tools/testing/selftests/ftrace/test.d/kprobe/kprobe_multiprobe.tc
Extension
.tc
Size
882 bytes
Lines
33
Domain
Support Tooling And Documentation
Bucket
tools
Inferred role
Support Tooling And Documentation: tools
Status
atlas-only

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

Dependency Surface

Detected Declarations

Annotated Snippet

#!/bin/sh
# SPDX-License-Identifier: GPL-2.0
# description: Create/delete multiprobe on kprobe event
# requires: kprobe_events "Create/append/":README

# Choose 2 symbols for target
SYM1=$FUNCTION_FORK
SYM2=do_exit
EVENT_NAME=kprobes/testevent

DEF1="p:$EVENT_NAME $SYM1"
DEF2="p:$EVENT_NAME $SYM2"

:;: "Define an event which has 2 probes" ;:
echo $DEF1 >> kprobe_events
echo $DEF2 >> kprobe_events
cat kprobe_events | grep "$DEF1"
cat kprobe_events | grep "$DEF2"

:;: "Remove the event by name (should remove both)" ;:
echo "-:$EVENT_NAME" >> kprobe_events
test `cat kprobe_events | wc -l` -eq 0

:;: "Remove just 1 event" ;:
echo $DEF1 >> kprobe_events
echo $DEF2 >> kprobe_events
echo "-:$EVENT_NAME $SYM1" >> kprobe_events
! cat kprobe_events | grep "$DEF1"
cat kprobe_events | grep "$DEF2"

:;: "Appending different type must fail" ;:
! echo "$DEF1 \$stack" >> kprobe_events

Annotation

Implementation Notes