tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-synthetic-event-syntax.tc

Source file repositories/reference/linux-study-clean/tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-synthetic-event-syntax.tc

File Facts

System
Linux kernel
Corpus path
tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-synthetic-event-syntax.tc
Extension
.tc
Size
2335 bytes
Lines
82
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 synthetic_events syntax parser
# requires: set_event synthetic_events

do_reset() {
    reset_trigger
    echo > set_event
    clear_trace
}

fail() { #msg
    do_reset
    echo $1
    exit_fail
}

reset_tracer
do_reset

echo "Test synthetic_events syntax parser"

echo > synthetic_events

# synthetic event must have a field
! echo "myevent" >> synthetic_events
echo "myevent u64 var1" >> synthetic_events

# synthetic event must be found in synthetic_events
grep "myevent[[:space:]]u64 var1" synthetic_events

# it is not possible to add same name event
! echo "myevent u64 var2" >> synthetic_events

# make sure !synthetic event doesn't require a field
echo "!myevent" >> synthetic_events
echo "myevent u64 var1" >> synthetic_events

# Non-append open will cleanup all events and add new one
echo "myevent u64 var2" > synthetic_events

# multiple fields with different spaces
echo "myevent u64 var1; u64 var2;" > synthetic_events
grep "myevent[[:space:]]u64 var1; u64 var2" synthetic_events
echo "myevent u64 var1 ; u64 var2 ;" > synthetic_events
grep "myevent[[:space:]]u64 var1; u64 var2" synthetic_events
echo "myevent u64 var1 ;u64 var2" > synthetic_events
grep "myevent[[:space:]]u64 var1; u64 var2" synthetic_events

# test field types
echo "myevent u32 var" > synthetic_events
echo "myevent u16 var" > synthetic_events
echo "myevent u8 var" > synthetic_events
echo "myevent s64 var" > synthetic_events
echo "myevent s32 var" > synthetic_events
echo "myevent s16 var" > synthetic_events
echo "myevent s8 var" > synthetic_events

echo "myevent char var" > synthetic_events
echo "myevent int var" > synthetic_events
echo "myevent long var" > synthetic_events
echo "myevent pid_t var" > synthetic_events

echo "myevent unsigned char var" > synthetic_events
echo "myevent unsigned int var" > synthetic_events
echo "myevent unsigned long var" > synthetic_events
grep "myevent[[:space:]]unsigned long var" synthetic_events

# test string type
echo "myevent char var[10]" > synthetic_events

Annotation

Implementation Notes