C++ (Cpp) subpage_prot_free Examples

Example #1

File: mmu_context_hash64.c Project: Blackburn29/PsycoKernel

int init_new_context(struct task_struct *tsk, struct mm_struct *mm)
{
	int index;

	index = __init_new_context();
	if (index < 0)
		return index;

	if (slice_mm_new_context(mm))
		slice_set_user_psize(mm, mmu_virtual_psize);
	subpage_prot_init_new_context(mm);
	mm->context.id = index;
#ifdef CONFIG_PPC_ICSWX
	mm->context.cop_lockp = kmalloc(sizeof(spinlock_t), GFP_KERNEL);
	if (!mm->context.cop_lockp) {
		__destroy_context(index);
		subpage_prot_free(mm);
		mm->context.id = MMU_NO_CONTEXT;
		return -ENOMEM;
	}
	spin_lock_init(mm->context.cop_lockp);
#endif 

	return 0;
}

Example #2

File: mmu_context_hash64.c Project: openube/android_kernel_sony_c2305

int init_new_context(struct task_struct *tsk, struct mm_struct *mm)
{
	int index;

	index = __init_new_context();
	if (index < 0)
		return index;

	/* The old code would re-promote on fork, we don't do that
	 * when using slices as it could cause problem promoting slices
	 * that have been forced down to 4K
	 */
	if (slice_mm_new_context(mm))
		slice_set_user_psize(mm, mmu_virtual_psize);
	subpage_prot_init_new_context(mm);
	mm->context.id = index;
#ifdef CONFIG_PPC_ICSWX
	mm->context.cop_lockp = kmalloc(sizeof(spinlock_t), GFP_KERNEL);
	if (!mm->context.cop_lockp) {
		__destroy_context(index);
		subpage_prot_free(mm);
		mm->context.id = MMU_NO_CONTEXT;
		return -ENOMEM;
	}
	spin_lock_init(mm->context.cop_lockp);
#endif /* CONFIG_PPC_ICSWX */

	return 0;
}

Example #3

File: mmu_context_hash64.c Project: Blackburn29/PsycoKernel

void destroy_context(struct mm_struct *mm)
{
#ifdef CONFIG_PPC_ICSWX
	drop_cop(mm->context.acop, mm);
	kfree(mm->context.cop_lockp);
	mm->context.cop_lockp = NULL;
#endif 
	__destroy_context(mm->context.id);
	subpage_prot_free(mm);
	mm->context.id = MMU_NO_CONTEXT;
}

Example #4

File: mmu_context_book3s64.c Project: EMCAntimatter/linux

void destroy_context(struct mm_struct *mm)
{
#ifdef CONFIG_SPAPR_TCE_IOMMU
	WARN_ON_ONCE(!list_empty(&mm->context.iommu_group_mem_list));
#endif
	if (radix_enabled())
		WARN_ON(process_tb[mm->context.id].prtb0 != 0);
	else
		subpage_prot_free(mm);
	destroy_contexts(&mm->context);
	mm->context.id = MMU_NO_CONTEXT;
}

Example #5

File: mmu_context_book3s64.c Project: sourcejedi/linux

int init_new_context(struct task_struct *tsk, struct mm_struct *mm)
{
    int index;

    index = __init_new_context();
    if (index < 0)
        return index;

    if (radix_enabled()) {
        radix__init_new_context(mm, index);
    } else {

        /* The old code would re-promote on fork, we don't do that
         * when using slices as it could cause problem promoting slices
         * that have been forced down to 4K
         *
         * For book3s we have MMU_NO_CONTEXT set to be ~0. Hence check
         * explicitly against context.id == 0. This ensures that we
         * properly initialize context slice details for newly allocated
         * mm's (which will have id == 0) and don't alter context slice
         * inherited via fork (which will have id != 0).
         *
         * We should not be calling init_new_context() on init_mm. Hence a
         * check against 0 is ok.
         */
        if (mm->context.id == 0)
            slice_set_user_psize(mm, mmu_virtual_psize);
        subpage_prot_init_new_context(mm);
    }
    mm->context.id = index;
#ifdef CONFIG_PPC_ICSWX
    mm->context.cop_lockp = kmalloc(sizeof(spinlock_t), GFP_KERNEL);
    if (!mm->context.cop_lockp) {
        __destroy_context(index);
        subpage_prot_free(mm);
        mm->context.id = MMU_NO_CONTEXT;
        return -ENOMEM;
    }
    spin_lock_init(mm->context.cop_lockp);
#endif /* CONFIG_PPC_ICSWX */

#ifdef CONFIG_PPC_64K_PAGES
    mm->context.pte_frag = NULL;
#endif
#ifdef CONFIG_SPAPR_TCE_IOMMU
    mm_iommu_init(&mm->context);
#endif
    return 0;
}

Example #6

File: mmu_context_hash64.c Project: 020gzh/linux

void destroy_context(struct mm_struct *mm)
{
#ifdef CONFIG_SPAPR_TCE_IOMMU
	mm_iommu_cleanup(&mm->context);
#endif

#ifdef CONFIG_PPC_ICSWX
	drop_cop(mm->context.acop, mm);
	kfree(mm->context.cop_lockp);
	mm->context.cop_lockp = NULL;
#endif /* CONFIG_PPC_ICSWX */

	destroy_pagetable_page(mm);
	__destroy_context(mm->context.id);
	subpage_prot_free(mm);
	mm->context.id = MMU_NO_CONTEXT;
}

Example #7

File: mmu_context_book3s64.c Project: sourcejedi/linux

void destroy_context(struct mm_struct *mm)
{
#ifdef CONFIG_SPAPR_TCE_IOMMU
    mm_iommu_cleanup(&mm->context);
#endif

#ifdef CONFIG_PPC_ICSWX
    drop_cop(mm->context.acop, mm);
    kfree(mm->context.cop_lockp);
    mm->context.cop_lockp = NULL;
#endif /* CONFIG_PPC_ICSWX */

    if (radix_enabled())
        process_tb[mm->context.id].prtb1 = 0;
    else
        subpage_prot_free(mm);
    destroy_pagetable_page(mm);
    __destroy_context(mm->context.id);
    mm->context.id = MMU_NO_CONTEXT;
}