forked from Minki/linux
8889f6fa35
Compilation of mlx5 driver without CONFIG_INFINIBAND_USER_ACCESS generates
the following error.
on x86_64:
ld: drivers/infiniband/hw/mlx5/main.o: in function `mlx5_ib_handler_MLX5_IB_METHOD_VAR_OBJ_ALLOC':
main.c:(.text+0x186d): undefined reference to `ib_uverbs_get_ucontext_file'
ld: drivers/infiniband/hw/mlx5/main.o:(.rodata+0x2480): undefined reference to `uverbs_idr_class'
ld: drivers/infiniband/hw/mlx5/main.o:(.rodata+0x24d8): undefined reference to `uverbs_destroy_def_handler'
This is happening because some parts of the UAPI description are not
static. This is a hold over from earlier code that relied on struct
pointers to refer to object types, now object types are referenced by
number. Remove the unused globals and add statics to the remaining UAPI
description elements.
Remove the redundent #ifdefs around mlx5_ib_*defs and obsolete
mlx5_ib_get_devx_tree().
The compiler now trims alot more unused code, including the above
problematic definitions when !CONFIG_INFINIBAND_USER_ACCESS.
Fixes: 7be76bef32 ("IB/mlx5: Introduce VAR object and its alloc/destroy methods")
Reported-by: Randy Dunlap <rdunlap@infradead.org>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
125 lines
6.0 KiB
C
125 lines
6.0 KiB
C
/*
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* Copyright (c) 2018, Mellanox Technologies inc. All rights reserved.
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*
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* This software is available to you under a choice of one of two
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* licenses. You may choose to be licensed under the terms of the GNU
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* General Public License (GPL) Version 2, available from the file
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* COPYING in the main directory of this source tree, or the
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* OpenIB.org BSD license below:
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* - Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* - Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#ifndef _UVERBS_NAMED_IOCTL_
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#define _UVERBS_NAMED_IOCTL_
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#include <rdma/uverbs_ioctl.h>
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#ifndef UVERBS_MODULE_NAME
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#error "Please #define UVERBS_MODULE_NAME before including rdma/uverbs_named_ioctl.h"
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#endif
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#define _UVERBS_PASTE(x, y) x ## y
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#define _UVERBS_NAME(x, y) _UVERBS_PASTE(x, y)
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#define UVERBS_METHOD(id) _UVERBS_NAME(UVERBS_MODULE_NAME, _method_##id)
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#define UVERBS_HANDLER(id) _UVERBS_NAME(UVERBS_MODULE_NAME, _handler_##id)
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#define UVERBS_OBJECT(id) _UVERBS_NAME(UVERBS_MODULE_NAME, _object_##id)
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/* These are static so they do not need to be qualified */
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#define UVERBS_METHOD_ATTRS(method_id) _method_attrs_##method_id
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#define UVERBS_OBJECT_METHODS(object_id) _object_methods_##object_id
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#define DECLARE_UVERBS_NAMED_METHOD(_method_id, ...) \
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static const struct uverbs_attr_def *const UVERBS_METHOD_ATTRS( \
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_method_id)[] = { __VA_ARGS__ }; \
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static const struct uverbs_method_def UVERBS_METHOD(_method_id) = { \
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.id = _method_id, \
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.handler = UVERBS_HANDLER(_method_id), \
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.num_attrs = ARRAY_SIZE(UVERBS_METHOD_ATTRS(_method_id)), \
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.attrs = &UVERBS_METHOD_ATTRS(_method_id), \
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}
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/* Create a standard destroy method using the default handler. The handle_attr
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* argument must be the attribute specifying the handle to destroy, the
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* default handler does not support any other attributes.
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*/
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#define DECLARE_UVERBS_NAMED_METHOD_DESTROY(_method_id, _handle_attr) \
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static const struct uverbs_attr_def *const UVERBS_METHOD_ATTRS( \
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_method_id)[] = { _handle_attr }; \
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static const struct uverbs_method_def UVERBS_METHOD(_method_id) = { \
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.id = _method_id, \
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.handler = uverbs_destroy_def_handler, \
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.num_attrs = ARRAY_SIZE(UVERBS_METHOD_ATTRS(_method_id)), \
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.attrs = &UVERBS_METHOD_ATTRS(_method_id), \
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}
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#define DECLARE_UVERBS_NAMED_OBJECT(_object_id, _type_attrs, ...) \
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static const struct uverbs_method_def *const UVERBS_OBJECT_METHODS( \
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_object_id)[] = { __VA_ARGS__ }; \
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static const struct uverbs_object_def UVERBS_OBJECT(_object_id) = { \
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.id = _object_id, \
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.type_attrs = &_type_attrs, \
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.num_methods = ARRAY_SIZE(UVERBS_OBJECT_METHODS(_object_id)), \
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.methods = &UVERBS_OBJECT_METHODS(_object_id) \
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}
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/*
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* Declare global methods. These still have a unique object_id because we
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* identify all uapi methods with a (object,method) tuple. However, they have
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* no type pointer.
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*/
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#define DECLARE_UVERBS_GLOBAL_METHODS(_object_id, ...) \
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static const struct uverbs_method_def *const UVERBS_OBJECT_METHODS( \
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_object_id)[] = { __VA_ARGS__ }; \
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static const struct uverbs_object_def UVERBS_OBJECT(_object_id) = { \
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.id = _object_id, \
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.num_methods = ARRAY_SIZE(UVERBS_OBJECT_METHODS(_object_id)), \
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.methods = &UVERBS_OBJECT_METHODS(_object_id) \
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}
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/* Used by drivers to declare a complete parsing tree for new methods
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*/
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#define ADD_UVERBS_METHODS(_name, _object_id, ...) \
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static const struct uverbs_method_def *const UVERBS_OBJECT_METHODS( \
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_object_id)[] = { __VA_ARGS__ }; \
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static const struct uverbs_object_def _name = { \
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.id = _object_id, \
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.num_methods = ARRAY_SIZE(UVERBS_OBJECT_METHODS(_object_id)), \
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.methods = &UVERBS_OBJECT_METHODS(_object_id) \
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};
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/* Used by drivers to declare a complete parsing tree for a single method that
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* differs only in having additional driver specific attributes.
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*/
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#define ADD_UVERBS_ATTRIBUTES_SIMPLE(_name, _object_id, _method_id, ...) \
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static const struct uverbs_attr_def *const UVERBS_METHOD_ATTRS( \
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_method_id)[] = { __VA_ARGS__ }; \
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static const struct uverbs_method_def UVERBS_METHOD(_method_id) = { \
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.id = _method_id, \
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.num_attrs = ARRAY_SIZE(UVERBS_METHOD_ATTRS(_method_id)), \
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.attrs = &UVERBS_METHOD_ATTRS(_method_id), \
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}; \
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ADD_UVERBS_METHODS(_name, _object_id, &UVERBS_METHOD(_method_id))
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#endif
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