diff options
Diffstat (limited to 'arch/s390/mm')
| -rw-r--r-- | arch/s390/mm/page-states.c | 52 | ||||
| -rw-r--r-- | arch/s390/mm/pgtable.c | 17 |
2 files changed, 51 insertions, 18 deletions
diff --git a/arch/s390/mm/page-states.c b/arch/s390/mm/page-states.c index f92ec203ad92..098923ae458f 100644 --- a/arch/s390/mm/page-states.c +++ b/arch/s390/mm/page-states.c @@ -50,28 +50,64 @@ void __init cmma_init(void) cmma_flag = 0; } -void arch_free_page(struct page *page, int order) +static inline void set_page_unstable(struct page *page, int order) { int i, rc; - if (!cmma_flag) - return; for (i = 0; i < (1 << order); i++) asm volatile(".insn rrf,0xb9ab0000,%0,%1,%2,0" : "=&d" (rc) - : "a" ((page_to_pfn(page) + i) << PAGE_SHIFT), + : "a" (page_to_phys(page + i)), "i" (ESSA_SET_UNUSED)); } -void arch_alloc_page(struct page *page, int order) +void arch_free_page(struct page *page, int order) { - int i, rc; - if (!cmma_flag) return; + set_page_unstable(page, order); +} + +static inline void set_page_stable(struct page *page, int order) +{ + int i, rc; + for (i = 0; i < (1 << order); i++) asm volatile(".insn rrf,0xb9ab0000,%0,%1,%2,0" : "=&d" (rc) - : "a" ((page_to_pfn(page) + i) << PAGE_SHIFT), + : "a" (page_to_phys(page + i)), "i" (ESSA_SET_STABLE)); } + +void arch_alloc_page(struct page *page, int order) +{ + if (!cmma_flag) + return; + set_page_stable(page, order); +} + +void arch_set_page_states(int make_stable) +{ + unsigned long flags, order, t; + struct list_head *l; + struct page *page; + struct zone *zone; + + if (!cmma_flag) + return; + if (make_stable) + drain_local_pages(NULL); + for_each_populated_zone(zone) { + spin_lock_irqsave(&zone->lock, flags); + for_each_migratetype_order(order, t) { + list_for_each(l, &zone->free_area[order].free_list[t]) { + page = list_entry(l, struct page, lru); + if (make_stable) + set_page_stable(page, order); + else + set_page_unstable(page, order); + } + } + spin_unlock_irqrestore(&zone->lock, flags); + } +} diff --git a/arch/s390/mm/pgtable.c b/arch/s390/mm/pgtable.c index c70215247071..c60bfb309ce6 100644 --- a/arch/s390/mm/pgtable.c +++ b/arch/s390/mm/pgtable.c @@ -314,21 +314,18 @@ int s390_enable_sie(void) } EXPORT_SYMBOL_GPL(s390_enable_sie); -#ifdef CONFIG_DEBUG_PAGEALLOC -#ifdef CONFIG_HIBERNATION +#if defined(CONFIG_DEBUG_PAGEALLOC) && defined(CONFIG_HIBERNATION) bool kernel_page_present(struct page *page) { unsigned long addr; int cc; addr = page_to_phys(page); - asm("lra %1,0(%1)\n" - "ipm %0\n" - "srl %0,28" - :"=d"(cc),"+a"(addr)::"cc"); + asm volatile( + " lra %1,0(%1)\n" + " ipm %0\n" + " srl %0,28" + : "=d" (cc), "+a" (addr) : : "cc"); return cc == 0; } - -#endif /* CONFIG_HIBERNATION */ -#endif /* CONFIG_DEBUG_PAGEALLOC */ - +#endif /* CONFIG_HIBERNATION && CONFIG_DEBUG_PAGEALLOC */ |