[mirror_ubuntu-artful-kernel.git] / arch / powerpc / include / asm / tlb.h

/*
 *	TLB shootdown specifics for powerpc
 *
 * Copyright (C) 2002 Anton Blanchard, IBM Corp.
 * Copyright (C) 2002 Paul Mackerras, IBM Corp.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version
 * 2 of the License, or (at your option) any later version.
 */
#ifndef _ASM_POWERPC_TLB_H
#define _ASM_POWERPC_TLB_H
#ifdef __KERNEL__

#ifndef __powerpc64__
#include <asm/pgtable.h>
#endif
#include <asm/pgalloc.h>
#include <asm/tlbflush.h>
#ifndef __powerpc64__
#include <asm/page.h>
#include <asm/mmu.h>
#endif

#include <linux/pagemap.h>

#define tlb_start_vma(tlb, vma)	do { } while (0)
#define tlb_end_vma(tlb, vma)	do { } while (0)
#define __tlb_remove_tlb_entry	__tlb_remove_tlb_entry
#define tlb_remove_check_page_size_change tlb_remove_check_page_size_change

extern void tlb_flush(struct mmu_gather *tlb);

/* Get the generic bits... */
#include <asm-generic/tlb.h>

extern void flush_hash_entry(struct mm_struct *mm, pte_t *ptep,
			     unsigned long address);

static inline void __tlb_remove_tlb_entry(struct mmu_gather *tlb, pte_t *ptep,
					  unsigned long address)
{
#ifdef CONFIG_PPC_STD_MMU_32
	if (pte_val(*ptep) & _PAGE_HASHPTE)
		flush_hash_entry(tlb->mm, ptep, address);
#endif
}

static inline void tlb_remove_check_page_size_change(struct mmu_gather *tlb,
						     unsigned int page_size)
{
	if (!tlb->page_size)
		tlb->page_size = page_size;
	else if (tlb->page_size != page_size) {
		tlb_flush_mmu(tlb);
		/*
		 * update the page size after flush for the new
		 * mmu_gather.
		 */
		tlb->page_size = page_size;
	}
}

#ifdef CONFIG_SMP
static inline int mm_is_core_local(struct mm_struct *mm)
{
	return cpumask_subset(mm_cpumask(mm),
			      topology_sibling_cpumask(smp_processor_id()));
}

static inline int mm_is_thread_local(struct mm_struct *mm)
{
	return cpumask_equal(mm_cpumask(mm),
			      cpumask_of(smp_processor_id()));
}

#else
static inline int mm_is_core_local(struct mm_struct *mm)
{
	return 1;
}

static inline int mm_is_thread_local(struct mm_struct *mm)
{
	return 1;
}
#endif

#endif /* __KERNEL__ */
#endif /* __ASM_POWERPC_TLB_H */
Commit	Line	Data
1da177e4	1	/*
9a0f78f6	2	* TLB shootdown specifics for powerpc
1da177e4	3	*
9a0f78f6	4	* Copyright (C) 2002 Anton Blanchard, IBM Corp.
1da177e4 LT	5	* Copyright (C) 2002 Paul Mackerras, IBM Corp.
	6	*
	7	* This program is free software; you can redistribute it and/or
	8	* modify it under the terms of the GNU General Public License
	9	* as published by the Free Software Foundation; either version
	10	* 2 of the License, or (at your option) any later version.
	11	*/
9a0f78f6 SR	12	#ifndef _ASM_POWERPC_TLB_H
9a0f78f6 SR	13	#define _ASM_POWERPC_TLB_H
88ced031	14	#ifdef __KERNEL__
1da177e4	15
9a0f78f6	16	#ifndef __powerpc64__
1da177e4	17	#include <asm/pgtable.h>
9a0f78f6	18	#endif
1da177e4 LT	19	#include <asm/pgalloc.h>
1da177e4 LT	20	#include <asm/tlbflush.h>
9a0f78f6	21	#ifndef __powerpc64__
1da177e4 LT	22	#include <asm/page.h>
1da177e4 LT	23	#include <asm/mmu.h>
9a0f78f6	24	#endif
1da177e4	25
d4243c17 MD	26	#include <linux/pagemap.h>
d4243c17 MD	27
9a0f78f6 SR	28	#define tlb_start_vma(tlb, vma) do { } while (0)
9a0f78f6 SR	29	#define tlb_end_vma(tlb, vma) do { } while (0)
fb7332a9	30	#define __tlb_remove_tlb_entry __tlb_remove_tlb_entry
07e32661	31	#define tlb_remove_check_page_size_change tlb_remove_check_page_size_change
9a0f78f6	32
1da177e4 LT	33	extern void tlb_flush(struct mmu_gather *tlb);
	34
	35	/* Get the generic bits... */
	36	#include <asm-generic/tlb.h>
	37
1da177e4 LT	38	extern void flush_hash_entry(struct mm_struct mm, pte_t ptep,
	39	unsigned long address);
	40
	41	static inline void __tlb_remove_tlb_entry(struct mmu_gather tlb, pte_t ptep,
c7cc58a1	42	unsigned long address)
1da177e4	43	{
c7cc58a1	44	#ifdef CONFIG_PPC_STD_MMU_32
1da177e4 LT	45	if (pte_val(*ptep) & _PAGE_HASHPTE)
1da177e4 LT	46	flush_hash_entry(tlb->mm, ptep, address);
c7cc58a1	47	#endif
1da177e4 LT	48	}
1da177e4 LT	49
07e32661 AK	50	static inline void tlb_remove_check_page_size_change(struct mmu_gather *tlb,
	51	unsigned int page_size)
	52	{
	53	if (!tlb->page_size)
	54	tlb->page_size = page_size;
	55	else if (tlb->page_size != page_size) {
	56	tlb_flush_mmu(tlb);
	57	/*
	58	* update the page size after flush for the new
	59	* mmu_gather.
	60	*/
	61	tlb->page_size = page_size;
	62	}
	63	}
	64
9d4dab11 AK	65	#ifdef CONFIG_SMP
	66	static inline int mm_is_core_local(struct mm_struct *mm)
	67	{
	68	return cpumask_subset(mm_cpumask(mm),
	69	topology_sibling_cpumask(smp_processor_id()));
	70	}
bd77c449 AK	71
	72	static inline int mm_is_thread_local(struct mm_struct *mm)
	73	{
	74	return cpumask_equal(mm_cpumask(mm),
	75	cpumask_of(smp_processor_id()));
	76	}
	77
9d4dab11 AK	78	#else
	79	static inline int mm_is_core_local(struct mm_struct *mm)
	80	{
	81	return 1;
	82	}
bd77c449 AK	83
	84	static inline int mm_is_thread_local(struct mm_struct *mm)
	85	{
	86	return 1;
	87	}
9d4dab11 AK	88	#endif
9d4dab11 AK	89
88ced031	90	#endif /* __KERNEL__ */
9a0f78f6	91	#endif /* __ASM_POWERPC_TLB_H */