Contributors: 7
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Alexey Dobriyan |
85 |
60.71% |
1 |
14.29% |
| Heiko Carstens |
19 |
13.57% |
1 |
14.29% |
| Rik Van Riel |
15 |
10.71% |
1 |
14.29% |
| Yang Shi |
10 |
7.14% |
1 |
14.29% |
| Eric W. Biedermann |
9 |
6.43% |
1 |
14.29% |
| Greg Kroah-Hartman |
1 |
0.71% |
1 |
14.29% |
| Arun Sharma |
1 |
0.71% |
1 |
14.29% |
| Total |
140 |
|
7 |
|
// SPDX-License-Identifier: GPL-2.0
#include <linux/mm_types.h>
#include <linux/rbtree.h>
#include <linux/rwsem.h>
#include <linux/spinlock.h>
#include <linux/list.h>
#include <linux/cpumask.h>
#include <linux/atomic.h>
#include <linux/user_namespace.h>
#include <asm/pgtable.h>
#include <asm/mmu.h>
#ifndef INIT_MM_CONTEXT
#define INIT_MM_CONTEXT(name)
#endif
/*
* For dynamically allocated mm_structs, there is a dynamically sized cpumask
* at the end of the structure, the size of which depends on the maximum CPU
* number the system can see. That way we allocate only as much memory for
* mm_cpumask() as needed for the hundreds, or thousands of processes that
* a system typically runs.
*
* Since there is only one init_mm in the entire system, keep it simple
* and size this cpu_bitmask to NR_CPUS.
*/
struct mm_struct init_mm = {
.mm_rb = RB_ROOT,
.pgd = swapper_pg_dir,
.mm_users = ATOMIC_INIT(2),
.mm_count = ATOMIC_INIT(1),
.mmap_sem = __RWSEM_INITIALIZER(init_mm.mmap_sem),
.page_table_lock = __SPIN_LOCK_UNLOCKED(init_mm.page_table_lock),
.arg_lock = __SPIN_LOCK_UNLOCKED(init_mm.arg_lock),
.mmlist = LIST_HEAD_INIT(init_mm.mmlist),
.user_ns = &init_user_ns,
.cpu_bitmap = { [BITS_TO_LONGS(NR_CPUS)] = 0},
INIT_MM_CONTEXT(init_mm)
};