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authorDavid Hildenbrand <david@redhat.com>2022-11-08 18:46:51 +0100
committerAndrew Morton <akpm@linux-foundation.org>2022-11-30 15:58:49 -0800
commitd6379159f47630813f06f97535cc82ce7b9eed49 (patch)
treec9467de60d864c3f3bbc5688dd56c106d18e2237 /mm/debug_vm_pgtable.c
parent6a56ccbcf6c69538b152644107a1d7383c876ca7 (diff)
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.c32
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);