e8edc6e03a
First thing mm.h does is including sched.h solely for can_do_mlock() inline function which has "current" dereference inside. By dealing with can_do_mlock() mm.h can be detached from sched.h which is good. See below, why. This patch a) removes unconditional inclusion of sched.h from mm.h b) makes can_do_mlock() normal function in mm/mlock.c c) exports can_do_mlock() to not break compilation d) adds sched.h inclusions back to files that were getting it indirectly. e) adds less bloated headers to some files (asm/signal.h, jiffies.h) that were getting them indirectly Net result is: a) mm.h users would get less code to open, read, preprocess, parse, ... if they don't need sched.h b) sched.h stops being dependency for significant number of files: on x86_64 allmodconfig touching sched.h results in recompile of 4083 files, after patch it's only 3744 (-8.3%). Cross-compile tested on all arm defconfigs, all mips defconfigs, all powerpc defconfigs, alpha alpha-up arm i386 i386-up i386-defconfig i386-allnoconfig ia64 ia64-up m68k mips parisc parisc-up powerpc powerpc-up s390 s390-up sparc sparc-up sparc64 sparc64-up um-x86_64 x86_64 x86_64-up x86_64-defconfig x86_64-allnoconfig as well as my two usual configs. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
82 lines
2.6 KiB
C
82 lines
2.6 KiB
C
/*
|
|
* Copyright (c) 2007 Cisco Systems. All rights reserved.
|
|
*
|
|
* This software is available to you under a choice of one of two
|
|
* licenses. You may choose to be licensed under the terms of the GNU
|
|
* General Public License (GPL) Version 2, available from the file
|
|
* COPYING in the main directory of this source tree, or the
|
|
* OpenIB.org BSD license below:
|
|
*
|
|
* Redistribution and use in source and binary forms, with or
|
|
* without modification, are permitted provided that the following
|
|
* conditions are met:
|
|
*
|
|
* - Redistributions of source code must retain the above
|
|
* copyright notice, this list of conditions and the following
|
|
* disclaimer.
|
|
*
|
|
* - Redistributions in binary form must reproduce the above
|
|
* copyright notice, this list of conditions and the following
|
|
* disclaimer in the documentation and/or other materials
|
|
* provided with the distribution.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
|
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
|
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
|
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
|
|
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
|
|
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
|
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
|
* SOFTWARE.
|
|
*/
|
|
|
|
#ifndef IB_UMEM_H
|
|
#define IB_UMEM_H
|
|
|
|
#include <linux/list.h>
|
|
#include <linux/scatterlist.h>
|
|
#include <linux/workqueue.h>
|
|
|
|
struct ib_ucontext;
|
|
|
|
struct ib_umem {
|
|
struct ib_ucontext *context;
|
|
size_t length;
|
|
int offset;
|
|
int page_size;
|
|
int writable;
|
|
struct list_head chunk_list;
|
|
struct work_struct work;
|
|
struct mm_struct *mm;
|
|
unsigned long diff;
|
|
};
|
|
|
|
struct ib_umem_chunk {
|
|
struct list_head list;
|
|
int nents;
|
|
int nmap;
|
|
struct scatterlist page_list[0];
|
|
};
|
|
|
|
#ifdef CONFIG_INFINIBAND_USER_MEM
|
|
|
|
struct ib_umem *ib_umem_get(struct ib_ucontext *context, unsigned long addr,
|
|
size_t size, int access);
|
|
void ib_umem_release(struct ib_umem *umem);
|
|
int ib_umem_page_count(struct ib_umem *umem);
|
|
|
|
#else /* CONFIG_INFINIBAND_USER_MEM */
|
|
|
|
#include <linux/err.h>
|
|
|
|
static inline struct ib_umem *ib_umem_get(struct ib_ucontext *context,
|
|
unsigned long addr, size_t size,
|
|
int access) {
|
|
return ERR_PTR(-EINVAL);
|
|
}
|
|
static inline void ib_umem_release(struct ib_umem *umem) { }
|
|
static inline int ib_umem_page_count(struct ib_umem *umem) { return 0; }
|
|
|
|
#endif /* CONFIG_INFINIBAND_USER_MEM */
|
|
|
|
#endif /* IB_UMEM_H */
|