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authorMatthew Wilcox <willy@infradead.org>2018-06-18 23:59:29 +0300
committerMatthew Wilcox <willy@infradead.org>2018-08-22 06:54:20 +0300
commit8ab8ba38d48867aac01812e18f48fc9173ccd400 (patch)
tree4d149499e92ea666779d91caa2a487dfc322ffba /lib
parent31ff0ceeb266a4ac96f3fc8cebb85df862a22f92 (diff)
downloadlinux-8ab8ba38d48867aac01812e18f48fc9173ccd400.tar.xz
ida: Start new test_ida module
Start transitioning the IDA tests into kernel space. Framework heavily cribbed from test_xarray.c. Signed-off-by: Matthew Wilcox <willy@infradead.org>
Diffstat (limited to 'lib')
-rw-r--r--lib/Kconfig.debug3
-rw-r--r--lib/Makefile1
-rw-r--r--lib/test_ida.c45
3 files changed, 49 insertions, 0 deletions
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index 8838d1158d19..2fff661d9070 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -1827,6 +1827,9 @@ config TEST_HASH
This is intended to help people writing architecture-specific
optimized versions. If unsure, say N.
+config TEST_IDA
+ tristate "Perform selftest on IDA functions"
+
config TEST_PARMAN
tristate "Perform selftest on priority array manager"
default n
diff --git a/lib/Makefile b/lib/Makefile
index 90dc5520b784..18d87ca4c949 100644
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -50,6 +50,7 @@ obj-$(CONFIG_TEST_BPF) += test_bpf.o
obj-$(CONFIG_TEST_FIRMWARE) += test_firmware.o
obj-$(CONFIG_TEST_SYSCTL) += test_sysctl.o
obj-$(CONFIG_TEST_HASH) += test_hash.o test_siphash.o
+obj-$(CONFIG_TEST_IDA) += test_ida.o
obj-$(CONFIG_TEST_KASAN) += test_kasan.o
CFLAGS_test_kasan.o += -fno-builtin
obj-$(CONFIG_TEST_UBSAN) += test_ubsan.o
diff --git a/lib/test_ida.c b/lib/test_ida.c
new file mode 100644
index 000000000000..8c9a0672696b
--- /dev/null
+++ b/lib/test_ida.c
@@ -0,0 +1,45 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * test_ida.c: Test the IDA API
+ * Copyright (c) 2016-2018 Microsoft Corporation
+ * Copyright (c) 2018 Oracle Corporation
+ * Author: Matthew Wilcox <willy@infradead.org>
+ */
+
+#include <linux/idr.h>
+#include <linux/module.h>
+
+static unsigned int tests_run;
+static unsigned int tests_passed;
+
+#ifdef __KERNEL__
+void ida_dump(struct ida *ida) { }
+#endif
+#define IDA_BUG_ON(ida, x) do { \
+ tests_run++; \
+ if (x) { \
+ ida_dump(ida); \
+ dump_stack(); \
+ } else { \
+ tests_passed++; \
+ } \
+} while (0)
+
+static int ida_checks(void)
+{
+ DEFINE_IDA(ida);
+
+ IDA_BUG_ON(&ida, !ida_is_empty(&ida));
+
+ printk("IDA: %u of %u tests passed\n", tests_passed, tests_run);
+ return (tests_run != tests_passed) ? 0 : -EINVAL;
+}
+
+static void ida_exit(void)
+{
+}
+
+module_init(ida_checks);
+module_exit(ida_exit);
+MODULE_AUTHOR("Matthew Wilcox <willy@infradead.org>");
+MODULE_LICENSE("GPL");