From 5fcf5fa61218176acf198d9e63fb5739dd147244 Mon Sep 17 00:00:00 2001 From: Qi Zheng Date: Wed, 8 Jan 2025 14:57:20 +0800 Subject: mm: pgtable: add statistics for P4D level page table Like other levels of page tables, add statistics for P4D level page table. Link: https://lkml.kernel.org/r/d55fe3c286305aae84457da9e1066df99b3de125.1736317725.git.zhengqi.arch@bytedance.com Signed-off-by: Qi Zheng Originally-by: Peter Zijlstra (Intel) Reviewed-by: Kevin Brodsky Cc: Alexander Gordeev Cc: Alexandre Ghiti Cc: Alexandre Ghiti Cc: Andreas Larsson Cc: Aneesh Kumar K.V (Arm) Cc: Arnd Bergmann Cc: Dave Hansen Cc: David Hildenbrand Cc: David Rientjes Cc: Hugh Dickins Cc: Jann Horn Cc: Lorenzo Stoakes Cc: Matthew Wilcox (Oracle) Cc: Mike Rapoport (Microsoft) Cc: Muchun Song Cc: Nicholas Piggin Cc: Palmer Dabbelt Cc: Ryan Roberts Cc: Thomas Gleixner Cc: Vishal Moola (Oracle) Cc: Will Deacon Cc: Yu Zhao Signed-off-by: Andrew Morton --- arch/riscv/include/asm/pgalloc.h | 6 +++++- arch/x86/mm/pgtable.c | 3 +++ 2 files changed, 8 insertions(+), 1 deletion(-) (limited to 'arch') diff --git a/arch/riscv/include/asm/pgalloc.h b/arch/riscv/include/asm/pgalloc.h index 551d614d3369..3466fbe2e508 100644 --- a/arch/riscv/include/asm/pgalloc.h +++ b/arch/riscv/include/asm/pgalloc.h @@ -108,8 +108,12 @@ static inline void __pud_free_tlb(struct mmu_gather *tlb, pud_t *pud, static inline void __p4d_free_tlb(struct mmu_gather *tlb, p4d_t *p4d, unsigned long addr) { - if (pgtable_l5_enabled) + if (pgtable_l5_enabled) { + struct ptdesc *ptdesc = virt_to_ptdesc(p4d); + + pagetable_p4d_dtor(ptdesc); riscv_tlb_remove_ptdesc(tlb, virt_to_ptdesc(p4d)); + } } #endif /* __PAGETABLE_PMD_FOLDED */ diff --git a/arch/x86/mm/pgtable.c b/arch/x86/mm/pgtable.c index 69a357b15974..3d6e84da45b2 100644 --- a/arch/x86/mm/pgtable.c +++ b/arch/x86/mm/pgtable.c @@ -94,6 +94,9 @@ void ___pud_free_tlb(struct mmu_gather *tlb, pud_t *pud) #if CONFIG_PGTABLE_LEVELS > 4 void ___p4d_free_tlb(struct mmu_gather *tlb, p4d_t *p4d) { + struct ptdesc *ptdesc = virt_to_ptdesc(p4d); + + pagetable_p4d_dtor(ptdesc); paravirt_release_p4d(__pa(p4d) >> PAGE_SHIFT); paravirt_tlb_remove_table(tlb, virt_to_page(p4d)); } -- cgit v1.2.3-59-g8ed1b