jump_label: Provide a self-test

Signed-off-by: Jason Baron <jbaron@akamai.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: benh@kernel.crashing.org
Cc: bp@alien8.de
Cc: davem@davemloft.net
Cc: ddaney@caviumnetworks.com
Cc: heiko.carstens@de.ibm.com
Cc: linux-kernel@vger.kernel.org
Cc: liuj97@gmail.com
Cc: luto@amacapital.net
Cc: michael@ellerman.id.au
Cc: rabin@rab.in
Cc: ralf@linux-mips.org
Cc: rostedt@goodmis.org
Cc: shuahkh@osg.samsung.com
Cc: vbabka@suse.cz
Cc: will.deacon@arm.com
Link: http://lkml.kernel.org/r/0c091ecebd78a879ed8a71835d205a691a75ab4e.1438227999.git.jbaron@akamai.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>

tools/testing/selftests/Makefile

@@ -20,6 +20,7 @@ ifneq (1, $(quicktest))
 TARGETS += timers
 endif
 TARGETS += user
+TARGETS += jumplabel
 TARGETS += vm
 TARGETS += x86
 #Please keep the TARGETS list alphabetically sorted

tools/testing/selftests/jumplabel/Makefile

@@ -0,0 +1,8 @@
+# Makefile for jump label selftests
+
+# No binaries, but make sure arg-less "make" doesn't trigger "run_tests"
+all:
+
+TEST_PROGS := test_jump_label.sh
+
+include ../lib.mk

tools/testing/selftests/jumplabel/test_jump_label.sh

@@ -0,0 +1,16 @@
+#!/bin/sh
+# Runs jump label kernel module tests
+
+if /sbin/modprobe -q test_jump_label_base; then
+	if /sbin/modprobe -q test_jump_label; then
+		echo "jump_label: ok"
+		/sbin/modprobe -q -r test_jump_label
+		/sbin/modprobe -q -r test_jump_label_base
+	else
+		echo "jump_label: [FAIL]"
+		/sbin/modprobe -q -r test_jump_label_base
+	fi
+else
+	echo "jump_label: [FAIL]"
+	exit 1
+fi