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mm/mglru: remove CONFIG_TRANSPARENT_HUGEPAGE

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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>
This commit is contained in:
Kinsey Ho 2023-12-27 14:12:05 +00:00 committed by Andrew Morton
parent 533c67e635
commit 7eb2d01a1b
1 changed files with 1 additions and 11 deletions
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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
return pfn;
}
#if defined(CONFIG_TRANSPARENT_HUGEPAGE) || defined(CONFIG_ARCH_HAS_NONLEAF_PMD_YOUNG)
static unsigned long get_pmd_pfn(pmd_t pmd, struct vm_area_struct *vma, unsigned long addr)
{
unsigned long pfn = pmd_pfn(pmd);
@ -3291,7 +3290,6 @@ static unsigned long get_pmd_pfn(pmd_t pmd, struct vm_area_struct *vma, unsigned
return pfn;
}
#endif
static struct folio *get_pfn_folio(unsigned long pfn, struct mem_cgroup *memcg,
struct pglist_data *pgdat, bool can_swap)
@ -3394,7 +3392,6 @@ restart:
return suitable_to_scan(total, young);
}
#if defined(CONFIG_TRANSPARENT_HUGEPAGE) || defined(CONFIG_ARCH_HAS_NONLEAF_PMD_YOUNG)
static void walk_pmd_range_locked(pud_t *pud, unsigned long addr, struct vm_area_struct *vma,
struct mm_walk *args, unsigned long *bitmap, unsigned long *first)
{
@ -3472,12 +3469,6 @@ next:
done:
*first = -1;
}
#else
static void walk_pmd_range_locked(pud_t *pud, unsigned long addr, struct vm_area_struct *vma,
struct mm_walk *args, unsigned long *bitmap, unsigned long *first)
{
}
#endif
static void walk_pmd_range(pud_t *pud, unsigned long start, unsigned long end,
struct mm_walk *args)
@ -3513,7 +3504,6 @@ restart:
continue;
}
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
if (pmd_trans_huge(val)) {
unsigned long pfn = pmd_pfn(val);
struct pglist_data *pgdat = lruvec_pgdat(walk->lruvec);
@ -3532,7 +3522,7 @@ restart:
walk_pmd_range_locked(pud, addr, vma, args, bitmap, &first);
continue;
}
#endif
walk->mm_stats[MM_NONLEAF_TOTAL]++;
if (should_clear_pmd_young()) {