diff options
Diffstat (limited to 'arch/s390/mm/pageattr.c')
| -rw-r--r-- | arch/s390/mm/pageattr.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/arch/s390/mm/pageattr.c b/arch/s390/mm/pageattr.c index 91e5e29c1f5c..ba124d9c96ba 100644 --- a/arch/s390/mm/pageattr.c +++ b/arch/s390/mm/pageattr.c @@ -40,6 +40,20 @@ void __storage_key_init_range(unsigned long start, unsigned long end) } #endif +#ifdef CONFIG_PROC_FS +atomic_long_t direct_pages_count[PG_DIRECT_MAP_MAX]; + +void arch_report_meminfo(struct seq_file *m) +{ + seq_printf(m, "DirectMap4k: %8lu kB\n", + atomic_long_read(&direct_pages_count[PG_DIRECT_MAP_4K]) << 2); + seq_printf(m, "DirectMap1M: %8lu kB\n", + atomic_long_read(&direct_pages_count[PG_DIRECT_MAP_1M]) << 10); + seq_printf(m, "DirectMap2G: %8lu kB\n", + atomic_long_read(&direct_pages_count[PG_DIRECT_MAP_2G]) << 21); +} +#endif /* CONFIG_PROC_FS */ + static void pgt_set(unsigned long *old, unsigned long new, unsigned long addr, unsigned long dtt) { @@ -114,6 +128,8 @@ static int split_pmd_page(pmd_t *pmdp, unsigned long addr) } pmd_val(new) = __pa(pt_dir) | _SEGMENT_ENTRY; pgt_set((unsigned long *)pmdp, pmd_val(new), addr, CRDTE_DTT_SEGMENT); + update_page_count(PG_DIRECT_MAP_4K, PTRS_PER_PTE); + update_page_count(PG_DIRECT_MAP_1M, -1); return 0; } @@ -181,6 +197,8 @@ static int split_pud_page(pud_t *pudp, unsigned long addr) } pud_val(new) = __pa(pm_dir) | _REGION3_ENTRY; pgt_set((unsigned long *)pudp, pud_val(new), addr, CRDTE_DTT_REGION3); + update_page_count(PG_DIRECT_MAP_1M, PTRS_PER_PMD); + update_page_count(PG_DIRECT_MAP_2G, -1); return 0; } |