selftests/ftrace: Add a testcase for kprobe event naming (8cb0bc9e) · Commits · 戴 / test

Add a testcase for kprobe event naming. This testcase checks whether the kprobe events can automatically ganerate its event name on normal function and dot-suffixed function. Also it checks whether the kprobe events can correctly define new event with given event name and group name. Link: http://lkml.kernel.org/r/61ae96fd1fcd14ee652c8b6525c218b8661bb0d2.1499453040.git.naveen.n.rao@linux.vnet.ibm.com Signed-off-by:

Masami Hiramatsu <mhiramat@kernel.org> [Updated tests to use vfs_read and symbols with '.isra.', added check for kprobe_events and a command to clear it on exit, various additional checks and tests] Signed-off-by:

Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> Signed-off-by:

Steven Rostedt (VMware) <rostedt@goodmis.org>

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

0 → 100644

+36 −0

Original line number	Diff line number	Diff line
		#!/bin/sh
		# description: Kprobe event auto/manual naming

		[ -f kprobe_events ] \|\| exit_unsupported # this is configurable

		disable_events
		echo > kprobe_events

		:;: "Add an event on function without name" ;:

		FUNC=`grep " [tT] .*vfs_read$" /proc/kallsyms \| tail -n 1 \| cut -f 3 -d " "`
		[ "x" != "x$FUNC" ] \|\| exit_unresolved
		echo "p $FUNC" > kprobe_events
		PROBE_NAME=`echo $FUNC \| tr ".:" "_"`
		test -d events/kprobes/p_${PROBE_NAME}_0 \|\| exit_failure

		:;: "Add an event on function with new name" ;:

		echo "p:event1 $FUNC" > kprobe_events
		test -d events/kprobes/event1 \|\| exit_failure

		:;: "Add an event on function with new name and group" ;:

		echo "p:kprobes2/event2 $FUNC" > kprobe_events
		test -d events/kprobes2/event2 \|\| exit_failure

		:;: "Add an event on dot function without name" ;:

		FUNC=`grep -m 10 " [tT] .\.isra\..$" /proc/kallsyms \| tail -n 1 \| cut -f 3 -d " "`
		[ "x" != "x$FUNC" ] \|\| exit_unresolved
		echo "p $FUNC" > kprobe_events
		EVENT=`grep $FUNC kprobe_events \| cut -f 1 -d " " \| cut -f 2 -d:`
		[ "x" != "x$EVENT" ] \|\| exit_failure
		test -d events/$EVENT \|\| exit_failure

		echo > kprobe_events

Admin message