Commit b7dcd539 authored by Qi Zheng's avatar Qi Zheng Committed by Andrew Morton
Browse files

s390: pgtable: add statistics for PUD and P4D level page table 

Like PMD and PTE level page table, also add statistics for PUD and P4D
page table.

Link: https://lkml.kernel.org/r/4707dffce228ccec5c6662810566dd12b5741c4b.1736317725.git.zhengqi.arch@bytedance.com


Signed-off-by: default avatarQi Zheng <zhengqi.arch@bytedance.com>
Suggested-by: default avatarPeter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: default avatarKevin Brodsky <kevin.brodsky@arm.com>
Acked-by: default avatarAlexander Gordeev <agordeev@linux.ibm.com>
Cc: Alexandre Ghiti <alex@ghiti.fr>
Cc: Alexandre Ghiti <alexghiti@rivosinc.com>
Cc: Andreas Larsson <andreas@gaisler.com>
Cc: Aneesh Kumar K.V (Arm) <aneesh.kumar@kernel.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Jann Horn <jannh@google.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Mike Rapoport (Microsoft) <rppt@kernel.org>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: Ryan Roberts <ryan.roberts@arm.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vishal Moola (Oracle) <vishal.moola@gmail.com>
Cc: Will Deacon <will@kernel.org>
Cc: Yu Zhao <yuzhao@google.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
parent 440af48d

arch/s390/include/asm/pgalloc.h

+21 −8
Original line number Diff line number Diff line
@@ -53,28 +53,41 @@ static inline p4d_t *p4d_alloc_one(struct mm_struct *mm, unsigned long address) 
{

	unsigned long *table = crst_table_alloc(mm);



	if (table)

	if (!table)

		return NULL;

	crst_table_init(table, _REGION2_ENTRY_EMPTY);

	pagetable_p4d_ctor(virt_to_ptdesc(table));



	return (p4d_t *) table;

}



static inline void p4d_free(struct mm_struct *mm, p4d_t *p4d)

{

	if (!mm_p4d_folded(mm))

	if (mm_p4d_folded(mm))

		return;



	pagetable_p4d_dtor(virt_to_ptdesc(p4d));

	crst_table_free(mm, (unsigned long *) p4d);

}



static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long address)

{

	unsigned long *table = crst_table_alloc(mm);

	if (table)



	if (!table)

		return NULL;

	crst_table_init(table, _REGION3_ENTRY_EMPTY);

	pagetable_pud_ctor(virt_to_ptdesc(table));



	return (pud_t *) table;

}



static inline void pud_free(struct mm_struct *mm, pud_t *pud)

{

	if (!mm_pud_folded(mm))

	if (mm_pud_folded(mm))

		return;



	pagetable_pud_dtor(virt_to_ptdesc(pud));

	crst_table_free(mm, (unsigned long *) pud);

}

arch/s390/include/asm/tlb.h

+2 −0
Original line number Diff line number Diff line
@@ -122,6 +122,7 @@ static inline void p4d_free_tlb(struct mmu_gather *tlb, p4d_t *p4d, 
{

	if (mm_p4d_folded(tlb->mm))

		return;

	pagetable_p4d_dtor(virt_to_ptdesc(p4d));

	__tlb_adjust_range(tlb, address, PAGE_SIZE);

	tlb->mm->context.flush_mm = 1;

	tlb->freed_tables = 1;
@@ -140,6 +141,7 @@ static inline void pud_free_tlb(struct mmu_gather *tlb, pud_t *pud, 
{

	if (mm_pud_folded(tlb->mm))

		return;

	pagetable_pud_dtor(virt_to_ptdesc(pud));

	tlb->mm->context.flush_mm = 1;

	tlb->freed_tables = 1;

	tlb->cleared_p4ds = 1;