Add a testcase for kprobe-event with @symbol argument. Since @symbol needs to refer the kernel data symbol (linux_proc_banner), it requires CONFIG_KALLSYMS_ALL.
Signed-off-by: Masami Hiramatsu mhiramat@kernel.org --- tools/testing/selftests/ftrace/config | 1 + .../ftrace/test.d/kprobe/kprobe_args_symbol.tc | 39 ++++++++++++++++++++ 2 files changed, 40 insertions(+) create mode 100644 tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args_symbol.tc
diff --git a/tools/testing/selftests/ftrace/config b/tools/testing/selftests/ftrace/config index 766669592173..4c7d90aa97b2 100644 --- a/tools/testing/selftests/ftrace/config +++ b/tools/testing/selftests/ftrace/config @@ -8,3 +8,4 @@ CONFIG_MODULES=y CONFIG_MODULE_UNLOAD=y CONFIG_SAMPLES=y CONFIG_SAMPLE_TRACE_PRINTK=m +CONFIG_KALLSYMS_ALL=y diff --git a/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args_symbol.tc b/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args_symbol.tc new file mode 100644 index 000000000000..2b6dd33f9076 --- /dev/null +++ b/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args_symbol.tc @@ -0,0 +1,39 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 +# description: Kprobe event symbol argument + +[ -f kprobe_events ] || exit_unsupported # this is configurable + +SYMBOL="linux_proc_banner" + +if [ ! -f /proc/kallsyms ]; then + echo "Can not check the target symbol - please enable CONFIG_KALLSYMS" + exit_unresolved +elif ! grep "$SYMBOL$" /proc/kallsyms; then + echo "Linux banner is not exported - please enable CONFIG_KALLSYMS_ALL" + exit_unresolved +fi + +: "Test get basic types symbol argument" +echo "p:testprobe_u _do_fork arg1=@linux_proc_banner:u64 arg2=@linux_proc_banner:u32 arg3=@linux_proc_banner:u16 arg4=@linux_proc_banner:u8" > kprobe_events +echo "p:testprobe_s _do_fork arg1=@linux_proc_banner:s64 arg2=@linux_proc_banner:s32 arg3=@linux_proc_banner:s16 arg4=@linux_proc_banner:s8" >> kprobe_events +if grep -q "x8/16/32/64" README; then + echo "p:testprobe_x _do_fork arg1=@linux_proc_banner:x64 arg2=@linux_proc_banner:x32 arg3=@linux_proc_banner:x16 arg4=@linux_proc_banner:x8" >> kprobe_events +fi +echo "p:testprobe_bf _do_fork arg1=@linux_proc_banner:b8@4/32" >> kprobe_events +echo 1 > events/kprobes/enable +(echo "forked") +echo 0 > events/kprobes/enable +grep "testprobe_[usx]:.* arg1=.* arg2=.* arg3=.* arg4=.*" trace +grep "testprobe_bf:.* arg1=.*" trace + +: "Test get string symbol argument" +echo "p:testprobe_str _do_fork arg1=@linux_proc_banner:string" > kprobe_events +echo 1 > events/kprobes/enable +(echo "forked") +echo 0 > events/kprobes/enable +RESULT=`grep "testprobe_str" trace | sed -e 's/.* arg1=(.*)/\1/'` + +RESULT=`echo $RESULT | sed -e 's/.* ((.*)) ((.*)) .*/\1 \2/'` +ORIG=`cat /proc/version | sed -e 's/.* ((.*)) ((.*)) .*/\1 \2/'` +test "$RESULT" = "$ORIG"
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