tools/testing/selftests/ftrace/test.d/trigger/trigger-filter.tc

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

File Facts

System
Linux kernel
Corpus path
tools/testing/selftests/ftrace/test.d/trigger/trigger-filter.tc
Extension
.tc
Size
1553 bytes
Lines
39
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: event trigger - test trigger filter
# requires: set_event events/sched/sched_process_fork/trigger
# flags: instance

fail() { #msg
    echo $1
    exit_fail
}

echo "Test trigger filter"
echo 1 > tracing_on
echo 'traceoff if child_pid == 0' > events/sched/sched_process_fork/trigger
( echo "forked")
if [ `cat tracing_on` -ne 1 ]; then
    fail "traceoff trigger on sched_process_fork did not work"
fi

reset_trigger

echo "Test semantic error for trigger filter"
! echo 'traceoff if a' > events/sched/sched_process_fork/trigger
! echo 'traceoff if common_pid=0' > events/sched/sched_process_fork/trigger
! echo 'traceoff if common_pid==b' > events/sched/sched_process_fork/trigger
echo 'traceoff if common_pid == 0' > events/sched/sched_process_fork/trigger
echo '!traceoff' > events/sched/sched_process_fork/trigger
! echo 'traceoff if common_pid == child_pid' > events/sched/sched_process_fork/trigger
echo 'traceoff if common_pid <= 0' > events/sched/sched_process_fork/trigger
echo '!traceoff' > events/sched/sched_process_fork/trigger
echo 'traceoff if common_pid >= 0' > events/sched/sched_process_fork/trigger
echo '!traceoff' > events/sched/sched_process_fork/trigger
echo 'traceoff if parent_pid >= 0 && child_pid >= 0' > events/sched/sched_process_fork/trigger
echo '!traceoff' > events/sched/sched_process_fork/trigger
echo 'traceoff if parent_pid >= 0 || child_pid >= 0' > events/sched/sched_process_fork/trigger
echo '!traceoff' > events/sched/sched_process_fork/trigger

exit 0

Annotation

Implementation Notes