Linux 4.13.16
[linux/fpc-iii.git] / arch / powerpc / include / asm / tlb.h
blob609557569f6520f13167838ef11d4dfc1401a0c7
1 /*
2 * TLB shootdown specifics for powerpc
4 * Copyright (C) 2002 Anton Blanchard, IBM Corp.
5 * Copyright (C) 2002 Paul Mackerras, IBM Corp.
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.
12 #ifndef _ASM_POWERPC_TLB_H
13 #define _ASM_POWERPC_TLB_H
14 #ifdef __KERNEL__
16 #ifndef __powerpc64__
17 #include <asm/pgtable.h>
18 #endif
19 #include <asm/pgalloc.h>
20 #include <asm/tlbflush.h>
21 #ifndef __powerpc64__
22 #include <asm/page.h>
23 #include <asm/mmu.h>
24 #endif
26 #include <linux/pagemap.h>
28 #define tlb_start_vma(tlb, vma) do { } while (0)
29 #define tlb_end_vma(tlb, vma) do { } while (0)
30 #define __tlb_remove_tlb_entry __tlb_remove_tlb_entry
31 #define tlb_remove_check_page_size_change tlb_remove_check_page_size_change
33 extern void tlb_flush(struct mmu_gather *tlb);
35 /* Get the generic bits... */
36 #include <asm-generic/tlb.h>
38 extern void flush_hash_entry(struct mm_struct *mm, pte_t *ptep,
39 unsigned long address);
41 static inline void __tlb_remove_tlb_entry(struct mmu_gather *tlb, pte_t *ptep,
42 unsigned long address)
44 #ifdef CONFIG_PPC_STD_MMU_32
45 if (pte_val(*ptep) & _PAGE_HASHPTE)
46 flush_hash_entry(tlb->mm, ptep, address);
47 #endif
50 static inline void tlb_remove_check_page_size_change(struct mmu_gather *tlb,
51 unsigned int page_size)
53 if (!tlb->page_size)
54 tlb->page_size = page_size;
55 else if (tlb->page_size != page_size) {
56 tlb_flush_mmu(tlb);
58 * update the page size after flush for the new
59 * mmu_gather.
61 tlb->page_size = page_size;
65 #ifdef CONFIG_SMP
66 static inline int mm_is_core_local(struct mm_struct *mm)
68 return cpumask_subset(mm_cpumask(mm),
69 topology_sibling_cpumask(smp_processor_id()));
72 static inline int mm_is_thread_local(struct mm_struct *mm)
74 return cpumask_equal(mm_cpumask(mm),
75 cpumask_of(smp_processor_id()));
78 #else
79 static inline int mm_is_core_local(struct mm_struct *mm)
81 return 1;
84 static inline int mm_is_thread_local(struct mm_struct *mm)
86 return 1;
88 #endif
90 #endif /* __KERNEL__ */
91 #endif /* __ASM_POWERPC_TLB_H */