| /* SPDX-License-Identifier: GPL-2.0 */ |
| #ifndef _LINUX_MODULE_PARAMS_H |
| #define _LINUX_MODULE_PARAMS_H |
| /* (C) Copyright 2001, 2002 Rusty Russell IBM Corporation */ |
| #include <linux/init.h> |
| #include <linux/stringify.h> |
| #include <linux/kernel.h> |
| |
| /* You can override this manually, but generally this should match the |
| module name. */ |
| #ifdef MODULE |
| #define MODULE_PARAM_PREFIX /* empty */ |
| #define __MODULE_INFO_PREFIX /* empty */ |
| #else |
| #define MODULE_PARAM_PREFIX KBUILD_MODNAME "." |
| /* We cannot use MODULE_PARAM_PREFIX because some modules override it. */ |
| #define __MODULE_INFO_PREFIX KBUILD_MODNAME "." |
| #endif |
| |
| /* Chosen so that structs with an unsigned long line up. */ |
| #define MAX_PARAM_PREFIX_LEN (64 - sizeof(unsigned long)) |
| |
| #define __MODULE_INFO(tag, name, info) \ |
| static const char __UNIQUE_ID(name)[] \ |
| __used __section(".modinfo") __aligned(1) \ |
| = __MODULE_INFO_PREFIX __stringify(tag) "=" info |
| |
| #define __MODULE_PARM_TYPE(name, _type) \ |
| __MODULE_INFO(parmtype, name##type, #name ":" _type) |
| |
| /* One for each parameter, describing how to use it. Some files do |
| multiple of these per line, so can't just use MODULE_INFO. */ |
| #define MODULE_PARM_DESC(_parm, desc) \ |
| __MODULE_INFO(parm, _parm, #_parm ":" desc) |
| |
| struct kernel_param; |
| |
| /* |
| * Flags available for kernel_param_ops |
| * |
| * NOARG - the parameter allows for no argument (foo instead of foo=1) |
| */ |
| enum { |
| KERNEL_PARAM_OPS_FL_NOARG = (1 << 0) |
| }; |
| |
| struct kernel_param_ops { |
| /* How the ops should behave */ |
| unsigned int flags; |
| /* Returns 0, or -errno. arg is in kp->arg. */ |
| int (*set)(const char *val, const struct kernel_param *kp); |
| /* Returns length written or -errno. Buffer is 4k (ie. be short!) */ |
| int (*get)(char *buffer, const struct kernel_param *kp); |
| /* Optional function to free kp->arg when module unloaded. */ |
| void (*free)(void *arg); |
| }; |
| |
| /* |
| * Flags available for kernel_param |
| * |
| * UNSAFE - the parameter is dangerous and setting it will taint the kernel |
| * HWPARAM - Hardware param not permitted in lockdown mode |
| */ |
| enum { |
| KERNEL_PARAM_FL_UNSAFE = (1 << 0), |
| KERNEL_PARAM_FL_HWPARAM = (1 << 1), |
| }; |
| |
| struct kernel_param { |
| const char *name; |
| struct module *mod; |
| const struct kernel_param_ops *ops; |
| const u16 perm; |
| s8 level; |
| u8 flags; |
| union { |
| void *arg; |
| const struct kparam_string *str; |
| const struct kparam_array *arr; |
| }; |
| }; |
| |
| extern const struct kernel_param __start___param[], __stop___param[]; |
| |
| /* Special one for strings we want to copy into */ |
| struct kparam_string { |
| unsigned int maxlen; |
| char *string; |
| }; |
| |
| /* Special one for arrays */ |
| struct kparam_array |
| { |
| unsigned int max; |
| unsigned int elemsize; |
| unsigned int *num; |
| const struct kernel_param_ops *ops; |
| void *elem; |
| }; |
| |
| /** |
| * module_param - typesafe helper for a module/cmdline parameter |
| * @name: the variable to alter, and exposed parameter name. |
| * @type: the type of the parameter |
| * @perm: visibility in sysfs. |
| * |
| * @name becomes the module parameter, or (prefixed by KBUILD_MODNAME and a |
| * ".") the kernel commandline parameter. Note that - is changed to _, so |
| * the user can use "foo-bar=1" even for variable "foo_bar". |
| * |
| * @perm is 0 if the variable is not to appear in sysfs, or 0444 |
| * for world-readable, 0644 for root-writable, etc. Note that if it |
| * is writable, you may need to use kernel_param_lock() around |
| * accesses (esp. charp, which can be kfreed when it changes). |
| * |
| * The @type is simply pasted to refer to a param_ops_##type and a |
| * param_check_##type: for convenience many standard types are provided but |
| * you can create your own by defining those variables. |
| * |
| * Standard types are: |
| * byte, hexint, short, ushort, int, uint, long, ulong |
| * charp: a character pointer |
| * bool: a bool, values 0/1, y/n, Y/N. |
| * invbool: the above, only sense-reversed (N = true). |
| */ |
| #define module_param(name, type, perm) \ |
| module_param_named(name, name, type, perm) |
| |
| /** |
| * module_param_unsafe - same as module_param but taints kernel |
| * @name: the variable to alter, and exposed parameter name. |
| * @type: the type of the parameter |
| * @perm: visibility in sysfs. |
| */ |
| #define module_param_unsafe(name, type, perm) \ |
| module_param_named_unsafe(name, name, type, perm) |
| |
| /** |
| * module_param_named - typesafe helper for a renamed module/cmdline parameter |
| * @name: a valid C identifier which is the parameter name. |
| * @value: the actual lvalue to alter. |
| * @type: the type of the parameter |
| * @perm: visibility in sysfs. |
| * |
| * Usually it's a good idea to have variable names and user-exposed names the |
| * same, but that's harder if the variable must be non-static or is inside a |
| * structure. This allows exposure under a different name. |
| */ |
| #define module_param_named(name, value, type, perm) \ |
| param_check_##type(name, &(value)); \ |
| module_param_cb(name, ¶m_ops_##type, &value, perm); \ |
| __MODULE_PARM_TYPE(name, #type) |
| |
| /** |
| * module_param_named_unsafe - same as module_param_named but taints kernel |
| * @name: a valid C identifier which is the parameter name. |
| * @value: the actual lvalue to alter. |
| * @type: the type of the parameter |
| * @perm: visibility in sysfs. |
| */ |
| #define module_param_named_unsafe(name, value, type, perm) \ |
| param_check_##type(name, &(value)); \ |
| module_param_cb_unsafe(name, ¶m_ops_##type, &value, perm); \ |
| __MODULE_PARM_TYPE(name, #type) |
| |
| /** |
| * module_param_cb - general callback for a module/cmdline parameter |
| * @name: a valid C identifier which is the parameter name. |
| * @ops: the set & get operations for this parameter. |
| * @arg: args for @ops |
| * @perm: visibility in sysfs. |
| * |
| * The ops can have NULL set or get functions. |
| */ |
| #define module_param_cb(name, ops, arg, perm) \ |
| __module_param_call(MODULE_PARAM_PREFIX, name, ops, arg, perm, -1, 0) |
| |
| #define module_param_cb_unsafe(name, ops, arg, perm) \ |
| __module_param_call(MODULE_PARAM_PREFIX, name, ops, arg, perm, -1, \ |
| KERNEL_PARAM_FL_UNSAFE) |
| |
| #define __level_param_cb(name, ops, arg, perm, level) \ |
| __module_param_call(MODULE_PARAM_PREFIX, name, ops, arg, perm, level, 0) |
| /** |
| * core_param_cb - general callback for a module/cmdline parameter |
| * to be evaluated before core initcall level |
| * @name: a valid C identifier which is the parameter name. |
| * @ops: the set & get operations for this parameter. |
| * @arg: args for @ops |
| * @perm: visibility in sysfs. |
| * |
| * The ops can have NULL set or get functions. |
| */ |
| #define core_param_cb(name, ops, arg, perm) \ |
| __level_param_cb(name, ops, arg, perm, 1) |
| |
| /** |
| * postcore_param_cb - general callback for a module/cmdline parameter |
| * to be evaluated before postcore initcall level |
| * @name: a valid C identifier which is the parameter name. |
| * @ops: the set & get operations for this parameter. |
| * @arg: args for @ops |
| * @perm: visibility in sysfs. |
| * |
| * The ops can have NULL set or get functions. |
| */ |
| #define postcore_param_cb(name, ops, arg, perm) \ |
| __level_param_cb(name, ops, arg, perm, 2) |
| |
| /** |
| * arch_param_cb - general callback for a module/cmdline parameter |
| * to be evaluated before arch initcall level |
| * @name: a valid C identifier which is the parameter name. |
| * @ops: the set & get operations for this parameter. |
| * @arg: args for @ops |
| * @perm: visibility in sysfs. |
| * |
| * The ops can have NULL set or get functions. |
| */ |
| #define arch_param_cb(name, ops, arg, perm) \ |
| __level_param_cb(name, ops, arg, perm, 3) |
| |
| /** |
| * subsys_param_cb - general callback for a module/cmdline parameter |
| * to be evaluated before subsys initcall level |
| * @name: a valid C identifier which is the parameter name. |
| * @ops: the set & get operations for this parameter. |
| * @arg: args for @ops |
| * @perm: visibility in sysfs. |
| * |
| * The ops can have NULL set or get functions. |
| */ |
| #define subsys_param_cb(name, ops, arg, perm) \ |
| __level_param_cb(name, ops, arg, perm, 4) |
| |
| /** |
| * fs_param_cb - general callback for a module/cmdline parameter |
| * to be evaluated before fs initcall level |
| * @name: a valid C identifier which is the parameter name. |
| * @ops: the set & get operations for this parameter. |
| * @arg: args for @ops |
| * @perm: visibility in sysfs. |
| * |
| * The ops can have NULL set or get functions. |
| */ |
| #define fs_param_cb(name, ops, arg, perm) \ |
| __level_param_cb(name, ops, arg, perm, 5) |
| |
| /** |
| * device_param_cb - general callback for a module/cmdline parameter |
| * to be evaluated before device initcall level |
| * @name: a valid C identifier which is the parameter name. |
| * @ops: the set & get operations for this parameter. |
| * @arg: args for @ops |
| * @perm: visibility in sysfs. |
| * |
| * The ops can have NULL set or get functions. |
| */ |
| #define device_param_cb(name, ops, arg, perm) \ |
| __level_param_cb(name, ops, arg, perm, 6) |
| |
| /** |
| * late_param_cb - general callback for a module/cmdline parameter |
| * to be evaluated before late initcall level |
| * @name: a valid C identifier which is the parameter name. |
| * @ops: the set & get operations for this parameter. |
| * @arg: args for @ops |
| * @perm: visibility in sysfs. |
| * |
| * The ops can have NULL set or get functions. |
| */ |
| #define late_param_cb(name, ops, arg, perm) \ |
| __level_param_cb(name, ops, arg, perm, 7) |
| |
| /* On alpha, ia64 and ppc64 relocations to global data cannot go into |
| read-only sections (which is part of respective UNIX ABI on these |
| platforms). So 'const' makes no sense and even causes compile failures |
| with some compilers. */ |
| #if defined(CONFIG_ALPHA) || defined(CONFIG_IA64) || defined(CONFIG_PPC64) |
| #define __moduleparam_const |
| #else |
| #define __moduleparam_const const |
| #endif |
| |
| /* This is the fundamental function for registering boot/module |
| parameters. */ |
| #define __module_param_call(prefix, name, ops, arg, perm, level, flags) \ |
| /* Default value instead of permissions? */ \ |
| static const char __param_str_##name[] = prefix #name; \ |
| static struct kernel_param __moduleparam_const __param_##name \ |
| __used __section("__param") \ |
| __aligned(__alignof__(struct kernel_param)) \ |
| = { __param_str_##name, THIS_MODULE, ops, \ |
| VERIFY_OCTAL_PERMISSIONS(perm), level, flags, { arg } } |
| |
| /* Obsolete - use module_param_cb() */ |
| #define module_param_call(name, _set, _get, arg, perm) \ |
| static const struct kernel_param_ops __param_ops_##name = \ |
| { .flags = 0, .set = _set, .get = _get }; \ |
| __module_param_call(MODULE_PARAM_PREFIX, \ |
| name, &__param_ops_##name, arg, perm, -1, 0) |
| |
| #ifdef CONFIG_SYSFS |
| extern void kernel_param_lock(struct module *mod); |
| extern void kernel_param_unlock(struct module *mod); |
| #else |
| static inline void kernel_param_lock(struct module *mod) |
| { |
| } |
| static inline void kernel_param_unlock(struct module *mod) |
| { |
| } |
| #endif |
| |
| #ifndef MODULE |
| /** |
| * core_param - define a historical core kernel parameter. |
| * @name: the name of the cmdline and sysfs parameter (often the same as var) |
| * @var: the variable |
| * @type: the type of the parameter |
| * @perm: visibility in sysfs |
| * |
| * core_param is just like module_param(), but cannot be modular and |
| * doesn't add a prefix (such as "printk."). This is for compatibility |
| * with __setup(), and it makes sense as truly core parameters aren't |
| * tied to the particular file they're in. |
| */ |
| #define core_param(name, var, type, perm) \ |
| param_check_##type(name, &(var)); \ |
| __module_param_call("", name, ¶m_ops_##type, &var, perm, -1, 0) |
| |
| /** |
| * core_param_unsafe - same as core_param but taints kernel |
| * @name: the name of the cmdline and sysfs parameter (often the same as var) |
| * @var: the variable |
| * @type: the type of the parameter |
| * @perm: visibility in sysfs |
| */ |
| #define core_param_unsafe(name, var, type, perm) \ |
| param_check_##type(name, &(var)); \ |
| __module_param_call("", name, ¶m_ops_##type, &var, perm, \ |
| -1, KERNEL_PARAM_FL_UNSAFE) |
| |
| #endif /* !MODULE */ |
| |
| /** |
| * module_param_string - a char array parameter |
| * @name: the name of the parameter |
| * @string: the string variable |
| * @len: the maximum length of the string, incl. terminator |
| * @perm: visibility in sysfs. |
| * |
| * This actually copies the string when it's set (unlike type charp). |
| * @len is usually just sizeof(string). |
| */ |
| #define module_param_string(name, string, len, perm) \ |
| static const struct kparam_string __param_string_##name \ |
| = { len, string }; \ |
| __module_param_call(MODULE_PARAM_PREFIX, name, \ |
| ¶m_ops_string, \ |
| .str = &__param_string_##name, perm, -1, 0);\ |
| __MODULE_PARM_TYPE(name, "string") |
| |
| /** |
| * parameq - checks if two parameter names match |
| * @name1: parameter name 1 |
| * @name2: parameter name 2 |
| * |
| * Returns true if the two parameter names are equal. |
| * Dashes (-) are considered equal to underscores (_). |
| */ |
| extern bool parameq(const char *name1, const char *name2); |
| |
| /** |
| * parameqn - checks if two parameter names match |
| * @name1: parameter name 1 |
| * @name2: parameter name 2 |
| * @n: the length to compare |
| * |
| * Similar to parameq(), except it compares @n characters. |
| */ |
| extern bool parameqn(const char *name1, const char *name2, size_t n); |
| |
| /* Called on module insert or kernel boot */ |
| extern char *parse_args(const char *name, |
| char *args, |
| const struct kernel_param *params, |
| unsigned num, |
| s16 level_min, |
| s16 level_max, |
| void *arg, |
| int (*unknown)(char *param, char *val, |
| const char *doing, void *arg)); |
| |
| /* Called by module remove. */ |
| #ifdef CONFIG_SYSFS |
| extern void destroy_params(const struct kernel_param *params, unsigned num); |
| #else |
| static inline void destroy_params(const struct kernel_param *params, |
| unsigned num) |
| { |
| } |
| #endif /* !CONFIG_SYSFS */ |
| |
| /* All the helper functions */ |
| /* The macros to do compile-time type checking stolen from Jakub |
| Jelinek, who IIRC came up with this idea for the 2.4 module init code. */ |
| #define __param_check(name, p, type) \ |
| static inline type __always_unused *__check_##name(void) { return(p); } |
| |
| extern const struct kernel_param_ops param_ops_byte; |
| extern int param_set_byte(const char *val, const struct kernel_param *kp); |
| extern int param_get_byte(char *buffer, const struct kernel_param *kp); |
| #define param_check_byte(name, p) __param_check(name, p, unsigned char) |
| |
| extern const struct kernel_param_ops param_ops_short; |
| extern int param_set_short(const char *val, const struct kernel_param *kp); |
| extern int param_get_short(char *buffer, const struct kernel_param *kp); |
| #define param_check_short(name, p) __param_check(name, p, short) |
| |
| extern const struct kernel_param_ops param_ops_ushort; |
| extern int param_set_ushort(const char *val, const struct kernel_param *kp); |
| extern int param_get_ushort(char *buffer, const struct kernel_param *kp); |
| #define param_check_ushort(name, p) __param_check(name, p, unsigned short) |
| |
| extern const struct kernel_param_ops param_ops_int; |
| extern int param_set_int(const char *val, const struct kernel_param *kp); |
| extern int param_get_int(char *buffer, const struct kernel_param *kp); |
| #define param_check_int(name, p) __param_check(name, p, int) |
| |
| extern const struct kernel_param_ops param_ops_uint; |
| extern int param_set_uint(const char *val, const struct kernel_param *kp); |
| extern int param_get_uint(char *buffer, const struct kernel_param *kp); |
| #define param_check_uint(name, p) __param_check(name, p, unsigned int) |
| |
| extern const struct kernel_param_ops param_ops_long; |
| extern int param_set_long(const char *val, const struct kernel_param *kp); |
| extern int param_get_long(char *buffer, const struct kernel_param *kp); |
| #define param_check_long(name, p) __param_check(name, p, long) |
| |
| extern const struct kernel_param_ops param_ops_ulong; |
| extern int param_set_ulong(const char *val, const struct kernel_param *kp); |
| extern int param_get_ulong(char *buffer, const struct kernel_param *kp); |
| #define param_check_ulong(name, p) __param_check(name, p, unsigned long) |
| |
| extern const struct kernel_param_ops param_ops_ullong; |
| extern int param_set_ullong(const char *val, const struct kernel_param *kp); |
| extern int param_get_ullong(char *buffer, const struct kernel_param *kp); |
| #define param_check_ullong(name, p) __param_check(name, p, unsigned long long) |
| |
| extern const struct kernel_param_ops param_ops_hexint; |
| extern int param_set_hexint(const char *val, const struct kernel_param *kp); |
| extern int param_get_hexint(char *buffer, const struct kernel_param *kp); |
| #define param_check_hexint(name, p) param_check_uint(name, p) |
| |
| extern const struct kernel_param_ops param_ops_charp; |
| extern int param_set_charp(const char *val, const struct kernel_param *kp); |
| extern int param_get_charp(char *buffer, const struct kernel_param *kp); |
| extern void param_free_charp(void *arg); |
| #define param_check_charp(name, p) __param_check(name, p, char *) |
| |
| /* We used to allow int as well as bool. We're taking that away! */ |
| extern const struct kernel_param_ops param_ops_bool; |
| extern int param_set_bool(const char *val, const struct kernel_param *kp); |
| extern int param_get_bool(char *buffer, const struct kernel_param *kp); |
| #define param_check_bool(name, p) __param_check(name, p, bool) |
| |
| extern const struct kernel_param_ops param_ops_bool_enable_only; |
| extern int param_set_bool_enable_only(const char *val, |
| const struct kernel_param *kp); |
| /* getter is the same as for the regular bool */ |
| #define param_check_bool_enable_only param_check_bool |
| |
| extern const struct kernel_param_ops param_ops_invbool; |
| extern int param_set_invbool(const char *val, const struct kernel_param *kp); |
| extern int param_get_invbool(char *buffer, const struct kernel_param *kp); |
| #define param_check_invbool(name, p) __param_check(name, p, bool) |
| |
| /* An int, which can only be set like a bool (though it shows as an int). */ |
| extern const struct kernel_param_ops param_ops_bint; |
| extern int param_set_bint(const char *val, const struct kernel_param *kp); |
| #define param_get_bint param_get_int |
| #define param_check_bint param_check_int |
| |
| /** |
| * module_param_array - a parameter which is an array of some type |
| * @name: the name of the array variable |
| * @type: the type, as per module_param() |
| * @nump: optional pointer filled in with the number written |
| * @perm: visibility in sysfs |
| * |
| * Input and output are as comma-separated values. Commas inside values |
| * don't work properly (eg. an array of charp). |
| * |
| * ARRAY_SIZE(@name) is used to determine the number of elements in the |
| * array, so the definition must be visible. |
| */ |
| #define module_param_array(name, type, nump, perm) \ |
| module_param_array_named(name, name, type, nump, perm) |
| |
| /** |
| * module_param_array_named - renamed parameter which is an array of some type |
| * @name: a valid C identifier which is the parameter name |
| * @array: the name of the array variable |
| * @type: the type, as per module_param() |
| * @nump: optional pointer filled in with the number written |
| * @perm: visibility in sysfs |
| * |
| * This exposes a different name than the actual variable name. See |
| * module_param_named() for why this might be necessary. |
| */ |
| #define module_param_array_named(name, array, type, nump, perm) \ |
| param_check_##type(name, &(array)[0]); \ |
| static const struct kparam_array __param_arr_##name \ |
| = { .max = ARRAY_SIZE(array), .num = nump, \ |
| .ops = ¶m_ops_##type, \ |
| .elemsize = sizeof(array[0]), .elem = array }; \ |
| __module_param_call(MODULE_PARAM_PREFIX, name, \ |
| ¶m_array_ops, \ |
| .arr = &__param_arr_##name, \ |
| perm, -1, 0); \ |
| __MODULE_PARM_TYPE(name, "array of " #type) |
| |
| enum hwparam_type { |
| hwparam_ioport, /* Module parameter configures an I/O port */ |
| hwparam_iomem, /* Module parameter configures an I/O mem address */ |
| hwparam_ioport_or_iomem, /* Module parameter could be either, depending on other option */ |
| hwparam_irq, /* Module parameter configures an IRQ */ |
| hwparam_dma, /* Module parameter configures a DMA channel */ |
| hwparam_dma_addr, /* Module parameter configures a DMA buffer address */ |
| hwparam_other, /* Module parameter configures some other value */ |
| }; |
| |
| /** |
| * module_param_hw_named - A parameter representing a hw parameters |
| * @name: a valid C identifier which is the parameter name. |
| * @value: the actual lvalue to alter. |
| * @type: the type of the parameter |
| * @hwtype: what the value represents (enum hwparam_type) |
| * @perm: visibility in sysfs. |
| * |
| * Usually it's a good idea to have variable names and user-exposed names the |
| * same, but that's harder if the variable must be non-static or is inside a |
| * structure. This allows exposure under a different name. |
| */ |
| #define module_param_hw_named(name, value, type, hwtype, perm) \ |
| param_check_##type(name, &(value)); \ |
| __module_param_call(MODULE_PARAM_PREFIX, name, \ |
| ¶m_ops_##type, &value, \ |
| perm, -1, \ |
| KERNEL_PARAM_FL_HWPARAM | (hwparam_##hwtype & 0)); \ |
| __MODULE_PARM_TYPE(name, #type) |
| |
| #define module_param_hw(name, type, hwtype, perm) \ |
| module_param_hw_named(name, name, type, hwtype, perm) |
| |
| /** |
| * module_param_hw_array - A parameter representing an array of hw parameters |
| * @name: the name of the array variable |
| * @type: the type, as per module_param() |
| * @hwtype: what the value represents (enum hwparam_type) |
| * @nump: optional pointer filled in with the number written |
| * @perm: visibility in sysfs |
| * |
| * Input and output are as comma-separated values. Commas inside values |
| * don't work properly (eg. an array of charp). |
| * |
| * ARRAY_SIZE(@name) is used to determine the number of elements in the |
| * array, so the definition must be visible. |
| */ |
| #define module_param_hw_array(name, type, hwtype, nump, perm) \ |
| param_check_##type(name, &(name)[0]); \ |
| static const struct kparam_array __param_arr_##name \ |
| = { .max = ARRAY_SIZE(name), .num = nump, \ |
| .ops = ¶m_ops_##type, \ |
| .elemsize = sizeof(name[0]), .elem = name }; \ |
| __module_param_call(MODULE_PARAM_PREFIX, name, \ |
| ¶m_array_ops, \ |
| .arr = &__param_arr_##name, \ |
| perm, -1, \ |
| KERNEL_PARAM_FL_HWPARAM | (hwparam_##hwtype & 0)); \ |
| __MODULE_PARM_TYPE(name, "array of " #type) |
| |
| |
| extern const struct kernel_param_ops param_array_ops; |
| |
| extern const struct kernel_param_ops param_ops_string; |
| extern int param_set_copystring(const char *val, const struct kernel_param *); |
| extern int param_get_string(char *buffer, const struct kernel_param *kp); |
| |
| /* for exporting parameters in /sys/module/.../parameters */ |
| |
| struct module; |
| |
| #if defined(CONFIG_SYSFS) && defined(CONFIG_MODULES) |
| extern int module_param_sysfs_setup(struct module *mod, |
| const struct kernel_param *kparam, |
| unsigned int num_params); |
| |
| extern void module_param_sysfs_remove(struct module *mod); |
| #else |
| static inline int module_param_sysfs_setup(struct module *mod, |
| const struct kernel_param *kparam, |
| unsigned int num_params) |
| { |
| return 0; |
| } |
| |
| static inline void module_param_sysfs_remove(struct module *mod) |
| { } |
| #endif |
| |
| #endif /* _LINUX_MODULE_PARAMS_H */ |