lib: Move KUnit tests into tests/ subdirectory

Following from the recent KUnit file naming discussion[1], move all
KUnit tests in lib/ into lib/tests/.

Link: https://lore.kernel.org/lkml/20240720165441.it.320-kees@kernel.org/ [1]
Acked-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Acked-by: Jakub Kicinski <kuba@kernel.org>
Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Reviewed-by: David Gow <davidgow@google.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Reviewed-by: Rae Moar <rmoar@google.com>
Link: https://lore.kernel.org/r/20241202075545.3648096-4-davidgow@google.com
Signed-off-by: Kees Cook <kees@kernel.org>

1 files changed, 0 insertions, 230 deletions

diff --git a/lib/test_fprobe.c b/lib/test_fprobe.c
deleted file mode 100644
index cf92111b5c79..000000000000
--- a/lib/test_fprobe.c
+++ /dev/null
@@ -1,230 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * test_fprobe.c - simple sanity test for fprobe
- */
-
-#include <linux/kernel.h>
-#include <linux/fprobe.h>
-#include <linux/random.h>
-#include <kunit/test.h>
-
-#define div_factor 3
-
-static struct kunit *current_test;
-
-static u32 rand1, entry_val, exit_val;
-
-/* Use indirect calls to avoid inlining the target functions */
-static u32 (*target)(u32 value);
-static u32 (*target2)(u32 value);
-static unsigned long target_ip;
-static unsigned long target2_ip;
-static int entry_return_value;
-
-static noinline u32 fprobe_selftest_target(u32 value)
-{
-	return (value / div_factor);
-}
-
-static noinline u32 fprobe_selftest_target2(u32 value)
-{
-	return (value / div_factor) + 1;
-}
-
-static notrace int fp_entry_handler(struct fprobe *fp, unsigned long ip,
-				    unsigned long ret_ip,
-				    struct ftrace_regs *fregs, void *data)
-{
-	KUNIT_EXPECT_FALSE(current_test, preemptible());
-	/* This can be called on the fprobe_selftest_target and the fprobe_selftest_target2 */
-	if (ip != target_ip)
-		KUNIT_EXPECT_EQ(current_test, ip, target2_ip);
-	entry_val = (rand1 / div_factor);
-	if (fp->entry_data_size) {
-		KUNIT_EXPECT_NOT_NULL(current_test, data);
-		if (data)
-			*(u32 *)data = entry_val;
-	} else
-		KUNIT_EXPECT_NULL(current_test, data);
-
-	return entry_return_value;
-}
-
-static notrace void fp_exit_handler(struct fprobe *fp, unsigned long ip,
-				    unsigned long ret_ip,
-				    struct ftrace_regs *fregs, void *data)
-{
-	unsigned long ret = ftrace_regs_get_return_value(fregs);
-
-	KUNIT_EXPECT_FALSE(current_test, preemptible());
-	if (ip != target_ip) {
-		KUNIT_EXPECT_EQ(current_test, ip, target2_ip);
-		KUNIT_EXPECT_EQ(current_test, ret, (rand1 / div_factor) + 1);
-	} else
-		KUNIT_EXPECT_EQ(current_test, ret, (rand1 / div_factor));
-	KUNIT_EXPECT_EQ(current_test, entry_val, (rand1 / div_factor));
-	exit_val = entry_val + div_factor;
-	if (fp->entry_data_size) {
-		KUNIT_EXPECT_NOT_NULL(current_test, data);
-		if (data)
-			KUNIT_EXPECT_EQ(current_test, *(u32 *)data, entry_val);
-	} else
-		KUNIT_EXPECT_NULL(current_test, data);
-}
-
-/* Test entry only (no rethook) */
-static void test_fprobe_entry(struct kunit *test)
-{
-	struct fprobe fp_entry = {
-		.entry_handler = fp_entry_handler,
-	};
-
-	current_test = test;
-
-	/* Before register, unregister should be failed. */
-	KUNIT_EXPECT_NE(test, 0, unregister_fprobe(&fp_entry));
-	KUNIT_EXPECT_EQ(test, 0, register_fprobe(&fp_entry, "fprobe_selftest_target*", NULL));
-
-	entry_val = 0;
-	exit_val = 0;
-	target(rand1);
-	KUNIT_EXPECT_NE(test, 0, entry_val);
-	KUNIT_EXPECT_EQ(test, 0, exit_val);
-
-	entry_val = 0;
-	exit_val = 0;
-	target2(rand1);
-	KUNIT_EXPECT_NE(test, 0, entry_val);
-	KUNIT_EXPECT_EQ(test, 0, exit_val);
-
-	KUNIT_EXPECT_EQ(test, 0, unregister_fprobe(&fp_entry));
-}
-
-static void test_fprobe(struct kunit *test)
-{
-	struct fprobe fp = {
-		.entry_handler = fp_entry_handler,
-		.exit_handler = fp_exit_handler,
-	};
-
-	current_test = test;
-	KUNIT_EXPECT_EQ(test, 0, register_fprobe(&fp, "fprobe_selftest_target*", NULL));
-
-	entry_val = 0;
-	exit_val = 0;
-	target(rand1);
-	KUNIT_EXPECT_NE(test, 0, entry_val);
-	KUNIT_EXPECT_EQ(test, entry_val + div_factor, exit_val);
-
-	entry_val = 0;
-	exit_val = 0;
-	target2(rand1);
-	KUNIT_EXPECT_NE(test, 0, entry_val);
-	KUNIT_EXPECT_EQ(test, entry_val + div_factor, exit_val);
-
-	KUNIT_EXPECT_EQ(test, 0, unregister_fprobe(&fp));
-}
-
-static void test_fprobe_syms(struct kunit *test)
-{
-	static const char *syms[] = {"fprobe_selftest_target", "fprobe_selftest_target2"};
-	struct fprobe fp = {
-		.entry_handler = fp_entry_handler,
-		.exit_handler = fp_exit_handler,
-	};
-
-	current_test = test;
-	KUNIT_EXPECT_EQ(test, 0, register_fprobe_syms(&fp, syms, 2));
-
-	entry_val = 0;
-	exit_val = 0;
-	target(rand1);
-	KUNIT_EXPECT_NE(test, 0, entry_val);
-	KUNIT_EXPECT_EQ(test, entry_val + div_factor, exit_val);
-
-	entry_val = 0;
-	exit_val = 0;
-	target2(rand1);
-	KUNIT_EXPECT_NE(test, 0, entry_val);
-	KUNIT_EXPECT_EQ(test, entry_val + div_factor, exit_val);
-
-	KUNIT_EXPECT_EQ(test, 0, unregister_fprobe(&fp));
-}
-
-/* Test private entry_data */
-static void test_fprobe_data(struct kunit *test)
-{
-	struct fprobe fp = {
-		.entry_handler = fp_entry_handler,
-		.exit_handler = fp_exit_handler,
-		.entry_data_size = sizeof(u32),
-	};
-
-	current_test = test;
-	KUNIT_EXPECT_EQ(test, 0, register_fprobe(&fp, "fprobe_selftest_target", NULL));
-
-	target(rand1);
-
-	KUNIT_EXPECT_EQ(test, 0, unregister_fprobe(&fp));
-}
-
-static void test_fprobe_skip(struct kunit *test)
-{
-	struct fprobe fp = {
-		.entry_handler = fp_entry_handler,
-		.exit_handler = fp_exit_handler,
-	};
-
-	current_test = test;
-	KUNIT_EXPECT_EQ(test, 0, register_fprobe(&fp, "fprobe_selftest_target", NULL));
-
-	entry_return_value = 1;
-	entry_val = 0;
-	exit_val = 0;
-	target(rand1);
-	KUNIT_EXPECT_NE(test, 0, entry_val);
-	KUNIT_EXPECT_EQ(test, 0, exit_val);
-	KUNIT_EXPECT_EQ(test, 0, fp.nmissed);
-	entry_return_value = 0;
-
-	KUNIT_EXPECT_EQ(test, 0, unregister_fprobe(&fp));
-}
-
-static unsigned long get_ftrace_location(void *func)
-{
-	unsigned long size, addr = (unsigned long)func;
-
-	if (!kallsyms_lookup_size_offset(addr, &size, NULL) || !size)
-		return 0;
-
-	return ftrace_location_range(addr, addr + size - 1);
-}
-
-static int fprobe_test_init(struct kunit *test)
-{
-	rand1 = get_random_u32_above(div_factor);
-	target = fprobe_selftest_target;
-	target2 = fprobe_selftest_target2;
-	target_ip = get_ftrace_location(target);
-	target2_ip = get_ftrace_location(target2);
-
-	return 0;
-}
-
-static struct kunit_case fprobe_testcases[] = {
-	KUNIT_CASE(test_fprobe_entry),
-	KUNIT_CASE(test_fprobe),
-	KUNIT_CASE(test_fprobe_syms),
-	KUNIT_CASE(test_fprobe_data),
-	KUNIT_CASE(test_fprobe_skip),
-	{}
-};
-
-static struct kunit_suite fprobe_test_suite = {
-	.name = "fprobe_test",
-	.init = fprobe_test_init,
-	.test_cases = fprobe_testcases,
-};
-
-kunit_test_suites(&fprobe_test_suite);
-