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

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

File Facts

System
Linux kernel
Corpus path
tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args_string.tc
Extension
.tc
Size
1225 bytes
Lines
62
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: Kprobe event string type argument
# requires: kprobe_events available_filter_functions

case `uname -m` in
x86_64)
  ARG1=%di
;;
i[3456]86)
  ARG1=%ax
;;
aarch64)
  ARG1=%x0
;;
arm*)
  ARG1=%r0
;;
ppc64*)
  ARG1=%r3
;;
ppc*)
  ARG1=%r3
;;
s390*)
  ARG1=%r2
;;
mips*)
  ARG1=%r4
;;
loongarch*)
  ARG1=%r4
;;
riscv*)
  ARG1=%a0
;;
*)
  echo "Please implement other architecture here"
  exit_untested
esac

: "Test get argument (1)"
if grep -q eventfs_create_dir available_filter_functions; then
  DIR_NAME="eventfs_create_dir"
elif grep -q eventfs_add_dir available_filter_functions; then
  DIR_NAME="eventfs_add_dir"
else
  DIR_NAME="tracefs_create_dir"
fi
echo "p:testprobe ${DIR_NAME} arg1=+0(${ARG1}):string" > kprobe_events
echo 1 > events/kprobes/testprobe/enable
echo "p:test $FUNCTION_FORK" >> kprobe_events
grep -qe "testprobe.* arg1=\"test\"" trace

echo 0 > events/kprobes/testprobe/enable
: "Test get argument (2)"
echo "p:testprobe ${DIR_NAME} arg1=+0(${ARG1}):string arg2=+0(${ARG1}):string" > kprobe_events
echo 1 > events/kprobes/testprobe/enable
echo "p:test $FUNCTION_FORK" >> kprobe_events
grep -qe "testprobe.* arg1=\"test\" arg2=\"test\"" trace

Annotation

Implementation Notes