diff options
| -rw-r--r-- | arch/powerpc/include/asm/book3s/64/pgalloc.h | 7 | ||||
| -rw-r--r-- | arch/powerpc/include/asm/book3s/64/radix.h | 3 | ||||
| -rw-r--r-- | arch/powerpc/mm/pgtable-book3s64.c | 22 | ||||
| -rw-r--r-- | arch/powerpc/mm/pgtable-radix.c | 19 |
4 files changed, 46 insertions, 5 deletions
diff --git a/arch/powerpc/include/asm/book3s/64/pgalloc.h b/arch/powerpc/include/asm/book3s/64/pgalloc.h index 76234a14b97d..391ed2c3b697 100644 --- a/arch/powerpc/include/asm/book3s/64/pgalloc.h +++ b/arch/powerpc/include/asm/book3s/64/pgalloc.h @@ -227,4 +227,11 @@ static inline void __pte_free_tlb(struct mmu_gather *tlb, pgtable_t table, #define check_pgt_cache() do { } while (0) +extern atomic_long_t direct_pages_count[MMU_PAGE_COUNT]; +static inline void update_page_count(int psize, long count) +{ + if (IS_ENABLED(CONFIG_PROC_FS)) + atomic_long_add(count, &direct_pages_count[psize]); +} + #endif /* _ASM_POWERPC_BOOK3S_64_PGALLOC_H */ diff --git a/arch/powerpc/include/asm/book3s/64/radix.h b/arch/powerpc/include/asm/book3s/64/radix.h index 77440e837869..7d1a3d1543fc 100644 --- a/arch/powerpc/include/asm/book3s/64/radix.h +++ b/arch/powerpc/include/asm/book3s/64/radix.h @@ -32,6 +32,9 @@ #define RADIX_PUD_BAD_BITS 0x60000000000000e0UL #define RADIX_PGD_BAD_BITS 0x60000000000000e0UL +#define RADIX_PMD_SHIFT (PAGE_SHIFT + RADIX_PTE_INDEX_SIZE) +#define RADIX_PUD_SHIFT (RADIX_PMD_SHIFT + RADIX_PMD_INDEX_SIZE) +#define RADIX_PGD_SHIFT (RADIX_PUD_SHIFT + RADIX_PUD_INDEX_SIZE) /* * Size of EA range mapped by our pagetables. */ diff --git a/arch/powerpc/mm/pgtable-book3s64.c b/arch/powerpc/mm/pgtable-book3s64.c index 78d0b3d5ebad..01d7c0f7c4f0 100644 --- a/arch/powerpc/mm/pgtable-book3s64.c +++ b/arch/powerpc/mm/pgtable-book3s64.c @@ -455,3 +455,25 @@ void pgtable_free_tlb(struct mmu_gather *tlb, void *table, int index) return pgtable_free(table, index); } #endif + +#ifdef CONFIG_PROC_FS +atomic_long_t direct_pages_count[MMU_PAGE_COUNT]; + +void arch_report_meminfo(struct seq_file *m) +{ + /* + * Hash maps the memory with one size mmu_linear_psize. + * So don't bother to print these on hash + */ + if (!radix_enabled()) + return; + seq_printf(m, "DirectMap4k: %8lu kB\n", + atomic_long_read(&direct_pages_count[MMU_PAGE_4K]) << 2); + seq_printf(m, "DirectMap64k: %8lu kB\n", + atomic_long_read(&direct_pages_count[MMU_PAGE_64K]) << 6); + seq_printf(m, "DirectMap2M: %8lu kB\n", + atomic_long_read(&direct_pages_count[MMU_PAGE_2M]) << 11); + seq_printf(m, "DirectMap1G: %8lu kB\n", + atomic_long_read(&direct_pages_count[MMU_PAGE_1G]) << 20); +} +#endif /* CONFIG_PROC_FS */ diff --git a/arch/powerpc/mm/pgtable-radix.c b/arch/powerpc/mm/pgtable-radix.c index bba168d02235..7be99fd9af15 100644 --- a/arch/powerpc/mm/pgtable-radix.c +++ b/arch/powerpc/mm/pgtable-radix.c @@ -267,6 +267,7 @@ static int __meminit create_physical_mapping(unsigned long start, #else int split_text_mapping = 0; #endif + int psize; start = _ALIGN_UP(start, PAGE_SIZE); for (addr = start; addr < end; addr += mapping_size) { @@ -280,13 +281,17 @@ static int __meminit create_physical_mapping(unsigned long start, retry: if (IS_ALIGNED(addr, PUD_SIZE) && gap >= PUD_SIZE && mmu_psize_defs[MMU_PAGE_1G].shift && - PUD_SIZE <= max_mapping_size) + PUD_SIZE <= max_mapping_size) { mapping_size = PUD_SIZE; - else if (IS_ALIGNED(addr, PMD_SIZE) && gap >= PMD_SIZE && - mmu_psize_defs[MMU_PAGE_2M].shift) + psize = MMU_PAGE_1G; + } else if (IS_ALIGNED(addr, PMD_SIZE) && gap >= PMD_SIZE && + mmu_psize_defs[MMU_PAGE_2M].shift) { mapping_size = PMD_SIZE; - else + psize = MMU_PAGE_2M; + } else { mapping_size = PAGE_SIZE; + psize = mmu_virtual_psize; + } if (split_text_mapping && (mapping_size == PUD_SIZE) && (addr <= __pa_symbol(__init_begin)) && @@ -297,8 +302,10 @@ retry: if (split_text_mapping && (mapping_size == PMD_SIZE) && (addr <= __pa_symbol(__init_begin)) && - (addr + mapping_size) >= __pa_symbol(_stext)) + (addr + mapping_size) >= __pa_symbol(_stext)) { mapping_size = PAGE_SIZE; + psize = mmu_virtual_psize; + } if (mapping_size != previous_size) { print_mapping(start, addr, previous_size); @@ -316,6 +323,8 @@ retry: rc = __map_kernel_page(vaddr, addr, prot, mapping_size, nid, start, end); if (rc) return rc; + + update_page_count(psize, 1); } print_mapping(start, addr, mapping_size); |