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SubjectRe: [PATCH v3] moduleparam: fix kerneldoc
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On 12/2/19 1:01 AM, Fabien Dessenne wrote:
> Document missing @arg in xxx_param_cb().
> Describe all parameters of module_param_[named_]unsafe() and all
> *_param_cb() to make ./scripts/kernel-doc happy.
>
> Signed-off-by: Fabien Dessenne <fabien.dessenne@st.com>

Acked-by: Randy Dunlap <rdunlap@infradead.org>
Tested-by: Randy Dunlap <rdunlap@infradead.org>

Thanks.

> ---
> Changes since v2: @arg not @args + fix other kernel-doc warnings
> Changes since v1: do not replace 'lvalue' with 'value'
> ---
> include/linux/moduleparam.h | 82 ++++++++++++++++++++++++++++++++++++++++++---
> 1 file changed, 77 insertions(+), 5 deletions(-)
>
> diff --git a/include/linux/moduleparam.h b/include/linux/moduleparam.h
> index e5c3e23..3ef917f 100644
> --- a/include/linux/moduleparam.h
> +++ b/include/linux/moduleparam.h
> @@ -128,6 +128,9 @@ struct kparam_array
>
> /**
> * 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)
> @@ -150,6 +153,10 @@ struct kparam_array
>
> /**
> * 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)); \
> @@ -160,6 +167,7 @@ struct kparam_array
> * 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.
> @@ -171,36 +179,96 @@ struct kparam_array
> __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)
> /**
> - * <level>_param_cb - general callback for a module/cmdline parameter
> - * to be evaluated before certain initcall level
> + * 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 __level_param_cb(name, ops, arg, perm, level) \
> - __module_param_call(MODULE_PARAM_PREFIX, name, ops, arg, perm, level, 0)
> -
> #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)
>
> @@ -263,6 +331,10 @@ static inline void kernel_param_unlock(struct module *mod)
>
> /**
> * 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)); \
>


--
~Randy

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