tools/testing/selftests/ftrace/test.d/dynevent/add_remove_eprobe.tc

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

File Facts

System
Linux kernel
Corpus path
tools/testing/selftests/ftrace/test.d/dynevent/add_remove_eprobe.tc
Extension
.tc
Size
2999 bytes
Lines
98
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: Generic dynamic event - add/remove eprobe events
# requires: dynamic_events events/syscalls/sys_enter_openat "<attached-group>.<attached-event> [<args>]":README

echo 0 > events/enable

clear_dynamic_events

SYSTEM="syscalls"
EVENT="sys_enter_openat"
FIELD="filename"
EPROBE="eprobe_open"
OPTIONS="file=+0(\$filename):ustring"
echo "e:$EPROBE $SYSTEM/$EVENT $OPTIONS" >> dynamic_events

grep -q "$EPROBE" dynamic_events
test -d events/eprobes/$EPROBE

echo 1 > events/eprobes/$EPROBE/enable
ls
echo 0 > events/eprobes/$EPROBE/enable

content=`grep '^ *ls-' trace | grep 'file='`
nocontent=`grep '^ *ls-' trace | grep 'file=' | grep -v -e '"/' -e '"."' -e '(fault)' ` || true

if [ -z "$content" ]; then
	exit_fail
fi

if [ ! -z "$nocontent" ]; then
	exit_fail
fi

echo "-:$EPROBE" >> dynamic_events

! grep -q "$EPROBE" dynamic_events
! test -d events/eprobes/$EPROBE

# test various ways to remove the probe (already tested with just event name)

# With group name
echo "e:$EPROBE $SYSTEM/$EVENT $OPTIONS" >> dynamic_events
grep -q "$EPROBE" dynamic_events
test -d events/eprobes/$EPROBE
echo "-:eprobes/$EPROBE" >> dynamic_events
! grep -q "$EPROBE" dynamic_events
! test -d events/eprobes/$EPROBE

# With group name and system/event
echo "e:$EPROBE $SYSTEM/$EVENT $OPTIONS" >> dynamic_events
grep -q "$EPROBE" dynamic_events
test -d events/eprobes/$EPROBE
echo "-:eprobes/$EPROBE $SYSTEM/$EVENT" >> dynamic_events
! grep -q "$EPROBE" dynamic_events
! test -d events/eprobes/$EPROBE

# With just event name and system/event
echo "e:$EPROBE $SYSTEM/$EVENT $OPTIONS" >> dynamic_events
grep -q "$EPROBE" dynamic_events
test -d events/eprobes/$EPROBE
echo "-:$EPROBE $SYSTEM/$EVENT" >> dynamic_events
! grep -q "$EPROBE" dynamic_events
! test -d events/eprobes/$EPROBE

# With just event name and system/event and options
echo "e:$EPROBE $SYSTEM/$EVENT $OPTIONS" >> dynamic_events
grep -q "$EPROBE" dynamic_events
test -d events/eprobes/$EPROBE
echo "-:$EPROBE $SYSTEM/$EVENT $OPTIONS" >> dynamic_events

Annotation

Implementation Notes