diff options
| author | Christophe Leroy <christophe.leroy@csgroup.eu> | 2020-10-22 06:29:40 +0000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2020-12-09 16:46:56 +1100 |
| commit | 80007a17fc59bc2766f7d5cb2f79b4c65651504b (patch) | |
| tree | 3b65f8b47aa2d48d6123415deac3718b1784a9e1 /arch/powerpc/include/asm/book3s/32/pgtable.h | |
| parent | ef08d95546ccea540f6a592b89822bb085bf09c6 (diff) | |
powerpc/32s: Inline flush_hash_entry()
flush_hash_entry() is a simple function calling
flush_hash_pages() if it's a hash MMU or doing nothing otherwise.
Inline it.
And use it also in __ptep_test_and_clear_young().
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/9af895be7d4b404d40e749a2659552fd138e62c4.1603348103.git.christophe.leroy@csgroup.eu
Diffstat (limited to 'arch/powerpc/include/asm/book3s/32/pgtable.h')
| -rw-r--r-- | arch/powerpc/include/asm/book3s/32/pgtable.h | 17 |
1 files changed, 11 insertions, 6 deletions
diff --git a/arch/powerpc/include/asm/book3s/32/pgtable.h b/arch/powerpc/include/asm/book3s/32/pgtable.h index 41d8bc6db303..1d6a7dafd3dc 100644 --- a/arch/powerpc/include/asm/book3s/32/pgtable.h +++ b/arch/powerpc/include/asm/book3s/32/pgtable.h @@ -238,8 +238,14 @@ extern void add_hash_page(unsigned context, unsigned long va, unsigned long pmdval); /* Flush an entry from the TLB/hash table */ -extern void flush_hash_entry(struct mm_struct *mm, pte_t *ptep, - unsigned long address); +static inline void flush_hash_entry(struct mm_struct *mm, pte_t *ptep, unsigned long addr) +{ + if (mmu_has_feature(MMU_FTR_HPTE_TABLE)) { + unsigned long ptephys = __pa(ptep) & PAGE_MASK; + + flush_hash_pages(mm->context.id, addr, ptephys, 1); + } +} /* * PTE updates. This function is called whenever an existing @@ -291,10 +297,9 @@ static inline int __ptep_test_and_clear_young(struct mm_struct *mm, { unsigned long old; old = pte_update(mm, addr, ptep, _PAGE_ACCESSED, 0, 0); - if (old & _PAGE_HASHPTE) { - unsigned long ptephys = __pa(ptep) & PAGE_MASK; - flush_hash_pages(mm->context.id, addr, ptephys, 1); - } + if (old & _PAGE_HASHPTE) + flush_hash_entry(mm, ptep, addr); + return (old & _PAGE_ACCESSED) != 0; } #define ptep_test_and_clear_young(__vma, __addr, __ptep) \ |