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| author | Aneesh Kumar K.V | 2018-04-16 13:27:21 +0200 |
|---|---|---|
| committer | Michael Ellerman | 2018-05-15 14:29:11 +0200 |
| commit | 0c4d268029bf3ca78a57d934bdeb43bfdfd4790e (patch) | |
| tree | 18881852d576c31cae695f1e40c4a0d3b3688c52 /arch/powerpc/include/asm/book3s | |
| parent | powerpc/mm/book3s64/4k: Switch 4k pagesize config to use pagetable fragment (diff) | |
| download | kernel-qcow2-linux-0c4d268029bf3ca78a57d934bdeb43bfdfd4790e.tar.gz kernel-qcow2-linux-0c4d268029bf3ca78a57d934bdeb43bfdfd4790e.tar.xz kernel-qcow2-linux-0c4d268029bf3ca78a57d934bdeb43bfdfd4790e.zip | |
powerpc/book3s64/mm: Simplify the rcu callback for page table free
Instead of encoding shift in the table address, use an enumerated index value.
This allow us to do different things in the callback for pte and pmd.
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/include/asm/book3s')
| -rw-r--r-- | arch/powerpc/include/asm/book3s/64/pgalloc.h | 10 | ||||
| -rw-r--r-- | arch/powerpc/include/asm/book3s/64/pgtable.h | 10 |
2 files changed, 15 insertions, 5 deletions
diff --git a/arch/powerpc/include/asm/book3s/64/pgalloc.h b/arch/powerpc/include/asm/book3s/64/pgalloc.h index 826171568192..ed313b8d3fac 100644 --- a/arch/powerpc/include/asm/book3s/64/pgalloc.h +++ b/arch/powerpc/include/asm/book3s/64/pgalloc.h @@ -124,14 +124,14 @@ static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd) } static inline void __pud_free_tlb(struct mmu_gather *tlb, pud_t *pud, - unsigned long address) + unsigned long address) { /* * By now all the pud entries should be none entries. So go * ahead and flush the page walk cache */ flush_tlb_pgtable(tlb, address); - pgtable_free_tlb(tlb, pud, PUD_CACHE_INDEX); + pgtable_free_tlb(tlb, pud, PUD_INDEX); } static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long addr) @@ -146,14 +146,14 @@ static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd) } static inline void __pmd_free_tlb(struct mmu_gather *tlb, pmd_t *pmd, - unsigned long address) + unsigned long address) { /* * By now all the pud entries should be none entries. So go * ahead and flush the page walk cache */ flush_tlb_pgtable(tlb, address); - return pgtable_free_tlb(tlb, pmd, PMD_CACHE_INDEX); + return pgtable_free_tlb(tlb, pmd, PMD_INDEX); } static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd, @@ -203,7 +203,7 @@ static inline void __pte_free_tlb(struct mmu_gather *tlb, pgtable_t table, * ahead and flush the page walk cache */ flush_tlb_pgtable(tlb, address); - pgtable_free_tlb(tlb, table, 0); + pgtable_free_tlb(tlb, table, PTE_INDEX); } #define check_pgt_cache() do { } while (0) diff --git a/arch/powerpc/include/asm/book3s/64/pgtable.h b/arch/powerpc/include/asm/book3s/64/pgtable.h index 47b5ffc8715d..9462bc18806c 100644 --- a/arch/powerpc/include/asm/book3s/64/pgtable.h +++ b/arch/powerpc/include/asm/book3s/64/pgtable.h @@ -273,6 +273,16 @@ extern unsigned long __pte_frag_size_shift; /* Bits to mask out from a PGD to get to the PUD page */ #define PGD_MASKED_BITS 0xc0000000000000ffUL +/* + * Used as an indicator for rcu callback functions + */ +enum pgtable_index { + PTE_INDEX = 0, + PMD_INDEX, + PUD_INDEX, + PGD_INDEX, +}; + extern unsigned long __vmalloc_start; extern unsigned long __vmalloc_end; #define VMALLOC_START __vmalloc_start |