Viewing file:  mmu_context.h (1.15 KB) -rw-r--r--
Select action/file-type:
 (+) |  (+) |  (+) | Code (+) | Session (+) |  (+) | SDB (+) |  (+) |  (+) |  (+) |  (+) |  (+) |
/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (C) 2002 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
*/
#ifndef __UM_MMU_CONTEXT_H
#define __UM_MMU_CONTEXT_H
#include <linux/sched.h>
#include <linux/mm_types.h>
#include <linux/mmap_lock.h>
#include <asm/mm_hooks.h>
#include <asm/mmu.h>
extern void force_flush_all(void);
#define activate_mm activate_mm
static inline void activate_mm(struct mm_struct *old, struct mm_struct *new)
{
/*
* This is called by fs/exec.c and sys_unshare()
* when the new ->mm is used for the first time.
*/
__switch_mm(&new->context.id);
}
static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next,
struct task_struct *tsk)
{
unsigned cpu = smp_processor_id();
if(prev != next){
cpumask_clear_cpu(cpu, mm_cpumask(prev));
cpumask_set_cpu(cpu, mm_cpumask(next));
if(next != &init_mm)
__switch_mm(&next->context.id);
}
}
#define init_new_context init_new_context
extern int init_new_context(struct task_struct *task, struct mm_struct *mm);
#define destroy_context destroy_context
extern void destroy_context(struct mm_struct *mm);
#include <asm-generic/mmu_context.h>
#endif
|