selftests: ftrace: Add a testcase for types of kprobe event (153aae5f) · Commits · 戴 / test

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 <mhiramat@kernel.org> Signed-off-by:

Steven Rostedt <rostedt@goodmis.org>

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

0 → 100644

+37 −0

Original line number	Diff line number	Diff line
		#!/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

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