Release 4.12 include/rdma/ib_umem.h
/*
* 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_odp;
struct ib_umem {
struct ib_ucontext *context;
size_t length;
unsigned long address;
int page_shift;
int writable;
int hugetlb;
struct work_struct work;
struct pid *pid;
struct mm_struct *mm;
unsigned long diff;
struct ib_umem_odp *odp_data;
struct sg_table sg_head;
int nmap;
int npages;
};
/* Returns the offset of the umem start relative to the first page. */
static inline int ib_umem_offset(struct ib_umem *umem)
{
return umem->address & (BIT(umem->page_shift) - 1);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Haggai Eran | 24 | 85.71% | 1 | 50.00% |
| Artemy Kovalyov | 4 | 14.29% | 1 | 50.00% |
| Total | 28 | 100.00% | 2 | 100.00% |
/* Returns the first page of an ODP umem. */
static inline unsigned long ib_umem_start(struct ib_umem *umem)
{
return umem->address - ib_umem_offset(umem);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Haggai Eran | 23 | 100.00% | 1 | 100.00% |
| Total | 23 | 100.00% | 1 | 100.00% |
/* Returns the address of the page after the last one of an ODP umem. */
static inline unsigned long ib_umem_end(struct ib_umem *umem)
{
return ALIGN(umem->address + umem->length, BIT(umem->page_shift));
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Haggai Eran | 24 | 75.00% | 1 | 50.00% |
| Artemy Kovalyov | 8 | 25.00% | 1 | 50.00% |
| Total | 32 | 100.00% | 2 | 100.00% |
static inline size_t ib_umem_num_pages(struct ib_umem *umem)
{
return (ib_umem_end(umem) - ib_umem_start(umem)) >> umem->page_shift;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Haggai Eran | 26 | 89.66% | 1 | 50.00% |
| Artemy Kovalyov | 3 | 10.34% | 1 | 50.00% |
| Total | 29 | 100.00% | 2 | 100.00% |
#ifdef CONFIG_INFINIBAND_USER_MEM
struct ib_umem *ib_umem_get(struct ib_ucontext *context, unsigned long addr,
size_t size, int access, int dmasync);
void ib_umem_release(struct ib_umem *umem);
int ib_umem_page_count(struct ib_umem *umem);
int ib_umem_copy_from(void *dst, struct ib_umem *umem, size_t offset,
size_t length);
#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, int dmasync) {
return ERR_PTR(-EINVAL);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Roland Dreier | 31 | 91.18% | 1 | 50.00% |
| Arthur Kepner | 3 | 8.82% | 1 | 50.00% |
| Total | 34 | 100.00% | 2 | 100.00% |
static inline void ib_umem_release(struct ib_umem *umem) { }
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Roland Dreier | 11 | 100.00% | 1 | 100.00% |
| Total | 11 | 100.00% | 1 | 100.00% |
static inline int ib_umem_page_count(struct ib_umem *umem) { return 0; }
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Roland Dreier | 15 | 100.00% | 1 | 100.00% |
| Total | 15 | 100.00% | 1 | 100.00% |
static inline int ib_umem_copy_from(void *dst, struct ib_umem *umem, size_t offset,
size_t length) {
return -EINVAL;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Haggai Eran | 26 | 100.00% | 1 | 100.00% |
| Total | 26 | 100.00% | 1 | 100.00% |
#endif /* CONFIG_INFINIBAND_USER_MEM */
#endif /* IB_UMEM_H */
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Roland Dreier | 165 | 46.09% | 2 | 15.38% |
| Haggai Eran | 148 | 41.34% | 3 | 23.08% |
| Artemy Kovalyov | 16 | 4.47% | 2 | 15.38% |
| Shachar Raindel | 8 | 2.23% | 1 | 7.69% |
| Arthur Kepner | 6 | 1.68% | 1 | 7.69% |
| Shawn Bohrer | 5 | 1.40% | 1 | 7.69% |
| Yishai Hadas | 4 | 1.12% | 1 | 7.69% |
| Alexey Dobriyan | 3 | 0.84% | 1 | 7.69% |
| Joachim Fenkes | 3 | 0.84% | 1 | 7.69% |
| Total | 358 | 100.00% | 13 | 100.00% |
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