memtest=17, mean do 17 test patterns.
If you are unsure how to answer this question, answer N.
-config TEST_JUMP_LABEL
- tristate "Test jump label"
+config TEST_STATIC_KEYS
+ tristate "Test static keys"
default n
depends on m
help
- Test jump labels.
+ Test the static key interfaces.
If unsure, say N.
obj-$(CONFIG_TEST_LKM) += test_module.o
obj-$(CONFIG_TEST_RHASHTABLE) += test_rhashtable.o
obj-$(CONFIG_TEST_USER_COPY) += test_user_copy.o
-obj-$(CONFIG_TEST_JUMP_LABEL) += test_jump_label.o
-obj-$(CONFIG_TEST_JUMP_LABEL) += test_jump_label_base.o
+obj-$(CONFIG_TEST_STATIC_KEYS) += test_static_keys.o
+obj-$(CONFIG_TEST_STATIC_KEYS) += test_static_key_base.o
ifeq ($(CONFIG_DEBUG_KOBJECT),y)
CFLAGS_kobject.o += -DDEBUG
+++ /dev/null
-/*
- * Kernel module for testing jump labels.
- *
- * Copyright 2015 Akamai Technologies Inc. All Rights Reserved
- *
- * Authors:
- * Jason Baron <jbaron@akamai.com>
- *
- * This software is licensed under the terms of the GNU General Public
- * License version 2, as published by the Free Software Foundation, and
- * may be copied, distributed, and modified under those terms.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- */
-
-#include <linux/module.h>
-#include <linux/jump_label.h>
-
-/* old keys */
-struct static_key old_true_key = STATIC_KEY_INIT_TRUE;
-struct static_key old_false_key = STATIC_KEY_INIT_FALSE;
-
-/* new api */
-DEFINE_STATIC_KEY_TRUE(true_key);
-DEFINE_STATIC_KEY_FALSE(false_key);
-
-/* external */
-extern struct static_key base_old_true_key;
-extern struct static_key base_inv_old_true_key;
-extern struct static_key base_old_false_key;
-extern struct static_key base_inv_old_false_key;
-
-/* new api */
-extern struct static_key_true base_true_key;
-extern struct static_key_true base_inv_true_key;
-extern struct static_key_false base_false_key;
-extern struct static_key_false base_inv_false_key;
-
-
-struct test_branch {
- bool init_state;
- struct static_key *key;
- bool (*test_key)(void);
-};
-
-#define test_key_func(key, branch) \
-({bool func(void) { return branch(key); } func; })
-
-static void invert_key(struct static_key *key)
-{
- if (static_key_enabled(key))
- static_key_disable(key);
- else
- static_key_enable(key);
-}
-
-static void invert_keys(struct test_branch *branches, int size)
-{
- struct static_key *previous = NULL;
- int i;
-
- for (i = 0; i < size; i++) {
- if (previous != branches[i].key) {
- invert_key(branches[i].key);
- previous = branches[i].key;
- }
- }
-}
-
-int verify_branches(struct test_branch *branches, int size, bool invert)
-{
- int i;
- bool ret, init;
-
- for (i = 0; i < size; i++) {
- ret = static_key_enabled(branches[i].key);
- init = branches[i].init_state;
- if (ret != (invert ? !init : init))
- return -EINVAL;
- ret = branches[i].test_key();
- if (static_key_enabled(branches[i].key)) {
- if (!ret)
- return -EINVAL;
- } else {
- if (ret)
- return -EINVAL;
- }
- }
- return 0;
-}
-
-static int __init test_jump_label_init(void)
-{
- int ret;
- int size;
-
- struct test_branch jump_label_tests[] = {
- /* internal keys - old keys */
- {
- .init_state = true,
- .key = &old_true_key,
- .test_key = test_key_func(&old_true_key, static_key_true),
- },
- {
- .init_state = false,
- .key = &old_false_key,
- .test_key = test_key_func(&old_false_key, static_key_false),
- },
- /* internal keys - new keys */
- {
- .init_state = true,
- .key = &true_key.key,
- .test_key = test_key_func(&true_key, static_branch_likely),
- },
- {
- .init_state = true,
- .key = &true_key.key,
- .test_key = test_key_func(&true_key, static_branch_unlikely),
- },
- {
- .init_state = false,
- .key = &false_key.key,
- .test_key = test_key_func(&false_key, static_branch_likely),
- },
- {
- .init_state = false,
- .key = &false_key.key,
- .test_key = test_key_func(&false_key, static_branch_unlikely),
- },
- /* external keys - old keys */
- {
- .init_state = true,
- .key = &base_old_true_key,
- .test_key = test_key_func(&base_old_true_key, static_key_true),
- },
- {
- .init_state = false,
- .key = &base_inv_old_true_key,
- .test_key = test_key_func(&base_inv_old_true_key, static_key_true),
- },
- {
- .init_state = false,
- .key = &base_old_false_key,
- .test_key = test_key_func(&base_old_false_key, static_key_false),
- },
- {
- .init_state = true,
- .key = &base_inv_old_false_key,
- .test_key = test_key_func(&base_inv_old_false_key, static_key_false),
- },
- /* external keys - new keys */
- {
- .init_state = true,
- .key = &base_true_key.key,
- .test_key = test_key_func(&base_true_key, static_branch_likely),
- },
- {
- .init_state = true,
- .key = &base_true_key.key,
- .test_key = test_key_func(&base_true_key, static_branch_unlikely),
- },
- {
- .init_state = false,
- .key = &base_inv_true_key.key,
- .test_key = test_key_func(&base_inv_true_key, static_branch_likely),
- },
- {
- .init_state = false,
- .key = &base_inv_true_key.key,
- .test_key = test_key_func(&base_inv_true_key, static_branch_unlikely),
- },
- {
- .init_state = false,
- .key = &base_false_key.key,
- .test_key = test_key_func(&base_false_key, static_branch_likely),
- },
- {
- .init_state = false,
- .key = &base_false_key.key,
- .test_key = test_key_func(&base_false_key, static_branch_unlikely),
- },
- {
- .init_state = true,
- .key = &base_inv_false_key.key,
- .test_key = test_key_func(&base_inv_false_key, static_branch_likely),
- },
- {
- .init_state = true,
- .key = &base_inv_false_key.key,
- .test_key = test_key_func(&base_inv_false_key, static_branch_unlikely),
- },
- };
-
- size = ARRAY_SIZE(jump_label_tests);
-
- ret = verify_branches(jump_label_tests, size, false);
- if (ret)
- goto out;
-
- invert_keys(jump_label_tests, size);
- ret = verify_branches(jump_label_tests, size, true);
- if (ret)
- goto out;
-
- invert_keys(jump_label_tests, size);
- ret = verify_branches(jump_label_tests, size, false);
- if (ret)
- goto out;
- return 0;
-out:
- return ret;
-}
-
-static void __exit test_jump_label_exit(void)
-{
-}
-
-module_init(test_jump_label_init);
-module_exit(test_jump_label_exit);
-
-MODULE_AUTHOR("Jason Baron <jbaron@akamai.com>");
-MODULE_LICENSE("GPL");
/*
- * Kernel module for testing jump labels.
+ * Kernel module for testing static keys.
*
* Copyright 2015 Akamai Technologies Inc. All Rights Reserved
*
static_key_enable(key);
}
-static int __init test_jump_label_base_init(void)
+static int __init test_static_key_base_init(void)
{
invert_key(&base_inv_old_true_key);
invert_key(&base_inv_old_false_key);
return 0;
}
-static void __exit test_jump_label_base_exit(void)
+static void __exit test_static_key_base_exit(void)
{
}
-module_init(test_jump_label_base_init);
-module_exit(test_jump_label_base_exit);
+module_init(test_static_key_base_init);
+module_exit(test_static_key_base_exit);
MODULE_AUTHOR("Jason Baron <jbaron@akamai.com>");
MODULE_LICENSE("GPL");
--- /dev/null
+/*
+ * Kernel module for testing static keys.
+ *
+ * Copyright 2015 Akamai Technologies Inc. All Rights Reserved
+ *
+ * Authors:
+ * Jason Baron <jbaron@akamai.com>
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/module.h>
+#include <linux/jump_label.h>
+
+/* old keys */
+struct static_key old_true_key = STATIC_KEY_INIT_TRUE;
+struct static_key old_false_key = STATIC_KEY_INIT_FALSE;
+
+/* new api */
+DEFINE_STATIC_KEY_TRUE(true_key);
+DEFINE_STATIC_KEY_FALSE(false_key);
+
+/* external */
+extern struct static_key base_old_true_key;
+extern struct static_key base_inv_old_true_key;
+extern struct static_key base_old_false_key;
+extern struct static_key base_inv_old_false_key;
+
+/* new api */
+extern struct static_key_true base_true_key;
+extern struct static_key_true base_inv_true_key;
+extern struct static_key_false base_false_key;
+extern struct static_key_false base_inv_false_key;
+
+
+struct test_key {
+ bool init_state;
+ struct static_key *key;
+ bool (*test_key)(void);
+};
+
+#define test_key_func(key, branch) \
+ ({bool func(void) { return branch(key); } func; })
+
+static void invert_key(struct static_key *key)
+{
+ if (static_key_enabled(key))
+ static_key_disable(key);
+ else
+ static_key_enable(key);
+}
+
+static void invert_keys(struct test_key *keys, int size)
+{
+ struct static_key *previous = NULL;
+ int i;
+
+ for (i = 0; i < size; i++) {
+ if (previous != keys[i].key) {
+ invert_key(keys[i].key);
+ previous = keys[i].key;
+ }
+ }
+}
+
+int verify_keys(struct test_key *keys, int size, bool invert)
+{
+ int i;
+ bool ret, init;
+
+ for (i = 0; i < size; i++) {
+ ret = static_key_enabled(keys[i].key);
+ init = keys[i].init_state;
+ if (ret != (invert ? !init : init))
+ return -EINVAL;
+ ret = keys[i].test_key();
+ if (static_key_enabled(keys[i].key)) {
+ if (!ret)
+ return -EINVAL;
+ } else {
+ if (ret)
+ return -EINVAL;
+ }
+ }
+ return 0;
+}
+
+static int __init test_static_key_init(void)
+{
+ int ret;
+ int size;
+
+ struct test_key static_key_tests[] = {
+ /* internal keys - old keys */
+ {
+ .init_state = true,
+ .key = &old_true_key,
+ .test_key = test_key_func(&old_true_key, static_key_true),
+ },
+ {
+ .init_state = false,
+ .key = &old_false_key,
+ .test_key = test_key_func(&old_false_key, static_key_false),
+ },
+ /* internal keys - new keys */
+ {
+ .init_state = true,
+ .key = &true_key.key,
+ .test_key = test_key_func(&true_key, static_branch_likely),
+ },
+ {
+ .init_state = true,
+ .key = &true_key.key,
+ .test_key = test_key_func(&true_key, static_branch_unlikely),
+ },
+ {
+ .init_state = false,
+ .key = &false_key.key,
+ .test_key = test_key_func(&false_key, static_branch_likely),
+ },
+ {
+ .init_state = false,
+ .key = &false_key.key,
+ .test_key = test_key_func(&false_key, static_branch_unlikely),
+ },
+ /* external keys - old keys */
+ {
+ .init_state = true,
+ .key = &base_old_true_key,
+ .test_key = test_key_func(&base_old_true_key, static_key_true),
+ },
+ {
+ .init_state = false,
+ .key = &base_inv_old_true_key,
+ .test_key = test_key_func(&base_inv_old_true_key, static_key_true),
+ },
+ {
+ .init_state = false,
+ .key = &base_old_false_key,
+ .test_key = test_key_func(&base_old_false_key, static_key_false),
+ },
+ {
+ .init_state = true,
+ .key = &base_inv_old_false_key,
+ .test_key = test_key_func(&base_inv_old_false_key, static_key_false),
+ },
+ /* external keys - new keys */
+ {
+ .init_state = true,
+ .key = &base_true_key.key,
+ .test_key = test_key_func(&base_true_key, static_branch_likely),
+ },
+ {
+ .init_state = true,
+ .key = &base_true_key.key,
+ .test_key = test_key_func(&base_true_key, static_branch_unlikely),
+ },
+ {
+ .init_state = false,
+ .key = &base_inv_true_key.key,
+ .test_key = test_key_func(&base_inv_true_key, static_branch_likely),
+ },
+ {
+ .init_state = false,
+ .key = &base_inv_true_key.key,
+ .test_key = test_key_func(&base_inv_true_key, static_branch_unlikely),
+ },
+ {
+ .init_state = false,
+ .key = &base_false_key.key,
+ .test_key = test_key_func(&base_false_key, static_branch_likely),
+ },
+ {
+ .init_state = false,
+ .key = &base_false_key.key,
+ .test_key = test_key_func(&base_false_key, static_branch_unlikely),
+ },
+ {
+ .init_state = true,
+ .key = &base_inv_false_key.key,
+ .test_key = test_key_func(&base_inv_false_key, static_branch_likely),
+ },
+ {
+ .init_state = true,
+ .key = &base_inv_false_key.key,
+ .test_key = test_key_func(&base_inv_false_key, static_branch_unlikely),
+ },
+ };
+
+ size = ARRAY_SIZE(static_key_tests);
+
+ ret = verify_keys(static_key_tests, size, false);
+ if (ret)
+ goto out;
+
+ invert_keys(static_key_tests, size);
+ ret = verify_keys(static_key_tests, size, true);
+ if (ret)
+ goto out;
+
+ invert_keys(static_key_tests, size);
+ ret = verify_keys(static_key_tests, size, false);
+ if (ret)
+ goto out;
+ return 0;
+out:
+ return ret;
+}
+
+static void __exit test_static_key_exit(void)
+{
+}
+
+module_init(test_static_key_init);
+module_exit(test_static_key_exit);
+
+MODULE_AUTHOR("Jason Baron <jbaron@akamai.com>");
+MODULE_LICENSE("GPL");
+++ /dev/null
-#!/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
-# Makefile for jump label selftests
+# Makefile for static keys selftests
# No binaries, but make sure arg-less "make" doesn't trigger "run_tests"
all:
-TEST_PROGS := test_jump_label.sh
+TEST_PROGS := test_static_keys.sh
include ../lib.mk
--- /dev/null
+#!/bin/sh
+# Runs static keys kernel module tests
+
+if /sbin/modprobe -q test_static_key_base; then
+ if /sbin/modprobe -q test_static_keys; then
+ echo "static_key: ok"
+ /sbin/modprobe -q -r test_static_keys
+ /sbin/modprobe -q -r test_static_key_base
+ else
+ echo "static_keys: [FAIL]"
+ /sbin/modprobe -q -r test_static_key_base
+ fi
+else
+ echo "static_key: [FAIL]"
+ exit 1
+fi
git.samba.org / sfrench / cifs-2.6.git / commitdiff