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| author | David Hildenbrand <david@redhat.com> | 2022-11-08 18:46:51 +0100 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2022-11-30 15:58:49 -0800 |
| commit | d6379159f47630813f06f97535cc82ce7b9eed49 (patch) | |
| tree | c9467de60d864c3f3bbc5688dd56c106d18e2237 /mm/debug_vm_pgtable.c | |
| parent | 6a56ccbcf6c69538b152644107a1d7383c876ca7 (diff) | |
| download | lwn-d6379159f47630813f06f97535cc82ce7b9eed49.tar.gz lwn-d6379159f47630813f06f97535cc82ce7b9eed49.zip | |
mm: remove unused savedwrite infrastructure
NUMA hinting no longer uses savedwrite, let's rip it out.
... and while at it, drop __pte_write() and __pmd_write() on ppc64.
Link: https://lkml.kernel.org/r/20221108174652.198904-7-david@redhat.com
Signed-off-by: David Hildenbrand <david@redhat.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Anshuman Khandual <anshuman.khandual@arm.com>
Cc: Dave Chinner <david@fromorbit.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Nadav Amit <namit@vmware.com>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Peter Xu <peterx@redhat.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/debug_vm_pgtable.c')
| -rw-r--r-- | mm/debug_vm_pgtable.c | 32 |
1 files changed, 0 insertions, 32 deletions
diff --git a/mm/debug_vm_pgtable.c b/mm/debug_vm_pgtable.c index 2b61fde8c38c..c631ade3f1d2 100644 --- a/mm/debug_vm_pgtable.c +++ b/mm/debug_vm_pgtable.c @@ -171,18 +171,6 @@ static void __init pte_advanced_tests(struct pgtable_debug_args *args) ptep_get_and_clear_full(args->mm, args->vaddr, args->ptep, 1); } -static void __init pte_savedwrite_tests(struct pgtable_debug_args *args) -{ - pte_t pte = pfn_pte(args->fixed_pte_pfn, args->page_prot_none); - - if (!IS_ENABLED(CONFIG_NUMA_BALANCING)) - return; - - pr_debug("Validating PTE saved write\n"); - WARN_ON(!pte_savedwrite(pte_mk_savedwrite(pte_clear_savedwrite(pte)))); - WARN_ON(pte_savedwrite(pte_clear_savedwrite(pte_mk_savedwrite(pte)))); -} - #ifdef CONFIG_TRANSPARENT_HUGEPAGE static void __init pmd_basic_tests(struct pgtable_debug_args *args, int idx) { @@ -302,22 +290,6 @@ static void __init pmd_leaf_tests(struct pgtable_debug_args *args) WARN_ON(!pmd_leaf(pmd)); } -static void __init pmd_savedwrite_tests(struct pgtable_debug_args *args) -{ - pmd_t pmd; - - if (!IS_ENABLED(CONFIG_NUMA_BALANCING)) - return; - - if (!has_transparent_hugepage()) - return; - - pr_debug("Validating PMD saved write\n"); - pmd = pfn_pmd(args->fixed_pmd_pfn, args->page_prot_none); - WARN_ON(!pmd_savedwrite(pmd_mk_savedwrite(pmd_clear_savedwrite(pmd)))); - WARN_ON(pmd_savedwrite(pmd_clear_savedwrite(pmd_mk_savedwrite(pmd)))); -} - #ifdef CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE_PUD static void __init pud_basic_tests(struct pgtable_debug_args *args, int idx) { @@ -451,7 +423,6 @@ static void __init pmd_advanced_tests(struct pgtable_debug_args *args) { } static void __init pud_advanced_tests(struct pgtable_debug_args *args) { } static void __init pmd_leaf_tests(struct pgtable_debug_args *args) { } static void __init pud_leaf_tests(struct pgtable_debug_args *args) { } -static void __init pmd_savedwrite_tests(struct pgtable_debug_args *args) { } #endif /* CONFIG_TRANSPARENT_HUGEPAGE */ #ifdef CONFIG_HAVE_ARCH_HUGE_VMAP @@ -1288,9 +1259,6 @@ static int __init debug_vm_pgtable(void) pmd_leaf_tests(&args); pud_leaf_tests(&args); - pte_savedwrite_tests(&args); - pmd_savedwrite_tests(&args); - pte_special_tests(&args); pte_protnone_tests(&args); pmd_protnone_tests(&args); |