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| author | Shixin Liu <liushixin2@huawei.com> | 2021-06-30 18:47:37 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2021-06-30 20:47:25 -0700 |
| commit | 5fe77be6bf14bf6c471be58c68edc9e0f97b72fb (patch) | |
| tree | f3116ab77be2b9e42a22b7198161921859d98e26 /mm/debug_vm_pgtable.c | |
| parent | 774905878fc9b0b9a5ee4a889b97f773a077aeee (diff) | |
| download | lwn-5fe77be6bf14bf6c471be58c68edc9e0f97b72fb.tar.gz lwn-5fe77be6bf14bf6c471be58c68edc9e0f97b72fb.zip | |
mm/debug_vm_pgtable: move {pmd/pud}_huge_tests out of CONFIG_TRANSPARENT_HUGEPAGE
The functions {pmd/pud}_set_huge and {pmd/pud}_clear_huge are not
dependent on THP. Hence move {pmd/pud}_huge_tests out of
CONFIG_TRANSPARENT_HUGEPAGE.
Link: https://lkml.kernel.org/r/20210419071820.750217-1-liushixin2@huawei.com
Signed-off-by: Shixin Liu <liushixin2@huawei.com>
Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/debug_vm_pgtable.c')
| -rw-r--r-- | mm/debug_vm_pgtable.c | 91 |
1 files changed, 39 insertions, 52 deletions
diff --git a/mm/debug_vm_pgtable.c b/mm/debug_vm_pgtable.c index 92bfc37300df..760bb319f731 100644 --- a/mm/debug_vm_pgtable.c +++ b/mm/debug_vm_pgtable.c @@ -248,29 +248,6 @@ static void __init pmd_leaf_tests(unsigned long pfn, pgprot_t prot) WARN_ON(!pmd_leaf(pmd)); } -#ifdef CONFIG_HAVE_ARCH_HUGE_VMAP -static void __init pmd_huge_tests(pmd_t *pmdp, unsigned long pfn, pgprot_t prot) -{ - pmd_t pmd; - - if (!arch_vmap_pmd_supported(prot)) - return; - - pr_debug("Validating PMD huge\n"); - /* - * X86 defined pmd_set_huge() verifies that the given - * PMD is not a populated non-leaf entry. - */ - WRITE_ONCE(*pmdp, __pmd(0)); - WARN_ON(!pmd_set_huge(pmdp, __pfn_to_phys(pfn), prot)); - WARN_ON(!pmd_clear_huge(pmdp)); - pmd = READ_ONCE(*pmdp); - WARN_ON(!pmd_none(pmd)); -} -#else /* CONFIG_HAVE_ARCH_HUGE_VMAP */ -static void __init pmd_huge_tests(pmd_t *pmdp, unsigned long pfn, pgprot_t prot) { } -#endif /* CONFIG_HAVE_ARCH_HUGE_VMAP */ - static void __init pmd_savedwrite_tests(unsigned long pfn, pgprot_t prot) { pmd_t pmd; @@ -395,30 +372,6 @@ static void __init pud_leaf_tests(unsigned long pfn, pgprot_t prot) pud = pud_mkhuge(pud); WARN_ON(!pud_leaf(pud)); } - -#ifdef CONFIG_HAVE_ARCH_HUGE_VMAP -static void __init pud_huge_tests(pud_t *pudp, unsigned long pfn, pgprot_t prot) -{ - pud_t pud; - - if (!arch_vmap_pud_supported(prot)) - return; - - pr_debug("Validating PUD huge\n"); - /* - * X86 defined pud_set_huge() verifies that the given - * PUD is not a populated non-leaf entry. - */ - WRITE_ONCE(*pudp, __pud(0)); - WARN_ON(!pud_set_huge(pudp, __pfn_to_phys(pfn), prot)); - WARN_ON(!pud_clear_huge(pudp)); - pud = READ_ONCE(*pudp); - WARN_ON(!pud_none(pud)); -} -#else /* !CONFIG_HAVE_ARCH_HUGE_VMAP */ -static void __init pud_huge_tests(pud_t *pudp, unsigned long pfn, pgprot_t prot) { } -#endif /* !CONFIG_HAVE_ARCH_HUGE_VMAP */ - #else /* !CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE_PUD */ static void __init pud_basic_tests(struct mm_struct *mm, unsigned long pfn, int idx) { } static void __init pud_advanced_tests(struct mm_struct *mm, @@ -428,9 +381,6 @@ static void __init pud_advanced_tests(struct mm_struct *mm, { } static void __init pud_leaf_tests(unsigned long pfn, pgprot_t prot) { } -static void __init pud_huge_tests(pud_t *pudp, unsigned long pfn, pgprot_t prot) -{ -} #endif /* CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE_PUD */ #else /* !CONFIG_TRANSPARENT_HUGEPAGE */ static void __init pmd_basic_tests(unsigned long pfn, int idx) { } @@ -449,14 +399,51 @@ static void __init pud_advanced_tests(struct mm_struct *mm, } static void __init pmd_leaf_tests(unsigned long pfn, pgprot_t prot) { } static void __init pud_leaf_tests(unsigned long pfn, pgprot_t prot) { } +static void __init pmd_savedwrite_tests(unsigned long pfn, pgprot_t prot) { } +#endif /* CONFIG_TRANSPARENT_HUGEPAGE */ + +#ifdef CONFIG_HAVE_ARCH_HUGE_VMAP static void __init pmd_huge_tests(pmd_t *pmdp, unsigned long pfn, pgprot_t prot) { + pmd_t pmd; + + if (!arch_vmap_pmd_supported(prot)) + return; + + pr_debug("Validating PMD huge\n"); + /* + * X86 defined pmd_set_huge() verifies that the given + * PMD is not a populated non-leaf entry. + */ + WRITE_ONCE(*pmdp, __pmd(0)); + WARN_ON(!pmd_set_huge(pmdp, __pfn_to_phys(pfn), prot)); + WARN_ON(!pmd_clear_huge(pmdp)); + pmd = READ_ONCE(*pmdp); + WARN_ON(!pmd_none(pmd)); } + static void __init pud_huge_tests(pud_t *pudp, unsigned long pfn, pgprot_t prot) { + pud_t pud; + + if (!arch_vmap_pud_supported(prot)) + return; + + pr_debug("Validating PUD huge\n"); + /* + * X86 defined pud_set_huge() verifies that the given + * PUD is not a populated non-leaf entry. + */ + WRITE_ONCE(*pudp, __pud(0)); + WARN_ON(!pud_set_huge(pudp, __pfn_to_phys(pfn), prot)); + WARN_ON(!pud_clear_huge(pudp)); + pud = READ_ONCE(*pudp); + WARN_ON(!pud_none(pud)); } -static void __init pmd_savedwrite_tests(unsigned long pfn, pgprot_t prot) { } -#endif /* CONFIG_TRANSPARENT_HUGEPAGE */ +#else /* !CONFIG_HAVE_ARCH_HUGE_VMAP */ +static void __init pmd_huge_tests(pmd_t *pmdp, unsigned long pfn, pgprot_t prot) { } +static void __init pud_huge_tests(pud_t *pudp, unsigned long pfn, pgprot_t prot) { } +#endif /* CONFIG_HAVE_ARCH_HUGE_VMAP */ static void __init p4d_basic_tests(unsigned long pfn, pgprot_t prot) { |