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

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

File Facts

System
Linux kernel
Corpus path
tools/testing/selftests/ftrace/test.d/dynevent/enable_disable_tprobe.tc
Extension
.tc
Size
754 bytes
Lines
41
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 - enable/disable tracepoint probe events
# requires: dynamic_events "t[:[<group>/][<event>]] <tracepoint> [<args>]":README

echo 0 > events/enable
echo > dynamic_events

TRACEPOINT=sched_switch
ENABLEFILE=events/tracepoints/myprobe/enable

:;: "Add tracepoint event on $TRACEPOINT" ;:

echo "t:myprobe ${TRACEPOINT}" >> dynamic_events

:;: "Check enable/disable to ensure it works" ;:

echo 1 > $ENABLEFILE

grep -q $TRACEPOINT trace

echo 0 > $ENABLEFILE

echo > trace

! grep -q $TRACEPOINT trace

:;: "Repeat enable/disable to ensure it works" ;:

echo 1 > $ENABLEFILE

grep -q $TRACEPOINT trace

echo 0 > $ENABLEFILE

echo > trace

! grep -q $TRACEPOINT trace

exit 0

Annotation

Implementation Notes