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