From: Masami Hiramatsu Date: Wed, 16 Nov 2016 08:14:50 +0000 (+0900) Subject: selftests: ftrace: Add a testcase for types of kprobe event X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=153aae5f996d4cb3e8a64990b6b09cde4a1529b0;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git selftests: ftrace: Add a testcase for types of kprobe event Add a testcase for types of kprobe event. This checks kprobe event can accept and correctly expressed the arguments typed as s32, u32, x32 and bitfield. Here is the test result. ----- # ./ftracetest test.d/kprobe/kprobe_args_type.tc === Ftrace unit tests === [1] Kprobes event arguments with types [PASS] # of passed: 1 # of failed: 0 # of unresolved: 0 # of untested: 0 # of unsupported: 0 # of xfailed: 0 # of undefined(test bug): 0 ----- Link: http://lkml.kernel.org/r/147928409063.22982.3499119203875115458.stgit@devbox Signed-off-by: Masami Hiramatsu Signed-off-by: Steven Rostedt --- diff --git a/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args_type.tc b/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args_type.tc new file mode 100644 index 000000000000..0a78705b43b2 --- /dev/null +++ b/tools/testing/selftests/ftrace/test.d/kprobe/kprobe_args_type.tc @@ -0,0 +1,37 @@ +#!/bin/sh +# description: Kprobes event arguments with types + +[ -f kprobe_events ] || exit_unsupported # this is configurable + +grep "x8/16/32/64" README > /dev/null || exit_unsupported # version issue + +echo 0 > events/enable +echo > kprobe_events +enable_tracing + +echo 'p:testprobe _do_fork $stack0:s32 $stack0:u32 $stack0:x32 $stack0:b8@4/32' > kprobe_events +grep testprobe kprobe_events +test -d events/kprobes/testprobe + +echo 1 > events/kprobes/testprobe/enable +( echo "forked") +echo 0 > events/kprobes/testprobe/enable +ARGS=`tail -n 1 trace | sed -e 's/.* arg1=\(.*\) arg2=\(.*\) arg3=\(.*\) arg4=\(.*\)/\1 \2 \3 \4/'` + +check_types() { + X1=`printf "%x" $1 | tail -c 8` + X2=`printf "%x" $2` + X3=`printf "%x" $3` + test $X1 = $X2 + test $X2 = $X3 + test 0x$X3 = $3 + + B4=`printf "%x" $4` + B3=`echo -n $X3 | tail -c 3 | head -c 2` + test $B3 = $B4 +} +check_types $ARGS + +echo "-:testprobe" >> kprobe_events +clear_trace +test -d events/kprobes/testprobe && exit 1 || exit 0