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mm/mglru: remove CONFIG_TRANSPARENT_HUGEPAGE
Improve code readability by removing CONFIG_TRANSPARENT_HUGEPAGE, since the compiler should be able to automatically optimize out the code that promotes THPs during page table walks. No functional changes. Link: https://lkml.kernel.org/r/20231227141205.2200125-6-kinseyho@google.com Signed-off-by: Kinsey Ho <kinseyho@google.com> Co-developed-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> Tested-by: Donet Tom <donettom@linux.vnet.ibm.com> Acked-by: Yu Zhao <yuzhao@google.com> Cc: kernel test robot <lkp@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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parent
533c67e635
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12
mm/vmscan.c
12
mm/vmscan.c
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@ -3273,7 +3273,6 @@ static unsigned long get_pte_pfn(pte_t pte, struct vm_area_struct *vma, unsigned
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return pfn;
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}
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#if defined(CONFIG_TRANSPARENT_HUGEPAGE) || defined(CONFIG_ARCH_HAS_NONLEAF_PMD_YOUNG)
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static unsigned long get_pmd_pfn(pmd_t pmd, struct vm_area_struct *vma, unsigned long addr)
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{
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unsigned long pfn = pmd_pfn(pmd);
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@ -3291,7 +3290,6 @@ static unsigned long get_pmd_pfn(pmd_t pmd, struct vm_area_struct *vma, unsigned
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return pfn;
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}
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#endif
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static struct folio *get_pfn_folio(unsigned long pfn, struct mem_cgroup *memcg,
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struct pglist_data *pgdat, bool can_swap)
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@ -3394,7 +3392,6 @@ static bool walk_pte_range(pmd_t *pmd, unsigned long start, unsigned long end,
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return suitable_to_scan(total, young);
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}
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#if defined(CONFIG_TRANSPARENT_HUGEPAGE) || defined(CONFIG_ARCH_HAS_NONLEAF_PMD_YOUNG)
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static void walk_pmd_range_locked(pud_t *pud, unsigned long addr, struct vm_area_struct *vma,
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struct mm_walk *args, unsigned long *bitmap, unsigned long *first)
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{
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@ -3472,12 +3469,6 @@ static void walk_pmd_range_locked(pud_t *pud, unsigned long addr, struct vm_area
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done:
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*first = -1;
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}
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#else
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static void walk_pmd_range_locked(pud_t *pud, unsigned long addr, struct vm_area_struct *vma,
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struct mm_walk *args, unsigned long *bitmap, unsigned long *first)
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{
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}
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#endif
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static void walk_pmd_range(pud_t *pud, unsigned long start, unsigned long end,
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struct mm_walk *args)
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@ -3513,7 +3504,6 @@ static void walk_pmd_range(pud_t *pud, unsigned long start, unsigned long end,
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continue;
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}
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#ifdef CONFIG_TRANSPARENT_HUGEPAGE
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if (pmd_trans_huge(val)) {
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unsigned long pfn = pmd_pfn(val);
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struct pglist_data *pgdat = lruvec_pgdat(walk->lruvec);
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@ -3532,7 +3522,7 @@ static void walk_pmd_range(pud_t *pud, unsigned long start, unsigned long end,
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walk_pmd_range_locked(pud, addr, vma, args, bitmap, &first);
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continue;
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}
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#endif
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walk->mm_stats[MM_NONLEAF_TOTAL]++;
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if (should_clear_pmd_young()) {
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