1 files changed, 44 insertions, 56 deletions

diff --git a/arch/sh/mm/init.c b/arch/sh/mm/init.c
index d7df26bd1e5..4abf00031da 100644
--- a/arch/sh/mm/init.c
+++ b/arch/sh/mm/init.c
@@ -23,48 +23,19 @@
 
 DEFINE_PER_CPU(struct mmu_gather, mmu_gathers);
 pgd_t swapper_pg_dir[PTRS_PER_PGD];
-unsigned long cached_to_uncached = 0;
 
-void show_mem(void)
-{
-	int total = 0, reserved = 0, free = 0;
-	int shared = 0, cached = 0, slab = 0;
-	pg_data_t *pgdat;
-
-	printk("Mem-info:\n");
-	show_free_areas();
-
-	for_each_online_pgdat(pgdat) {
-		unsigned long flags, i;
-
-		pgdat_resize_lock(pgdat, &flags);
-		for (i = 0; i < pgdat->node_spanned_pages; i++) {
-			struct page *page = pgdat_page_nr(pgdat, i);
-			total++;
-			if (PageReserved(page))
-				reserved++;
-			else if (PageSwapCache(page))
-				cached++;
-			else if (PageSlab(page))
-				slab++;
-			else if (!page_count(page))
-				free++;
-			else
-				shared += page_count(page) - 1;
-		}
-		pgdat_resize_unlock(pgdat, &flags);
-	}
-
-	printk("Free swap:       %6ldkB\n", nr_swap_pages<<(PAGE_SHIFT-10));
-	printk("%d pages of RAM\n", total);
-	printk("%d free pages\n", free);
-	printk("%d reserved pages\n", reserved);
-	printk("%d slab pages\n", slab);
-	printk("%d pages shared\n", shared);
-	printk("%d pages swap cached\n", cached);
-	printk(KERN_INFO "Total of %ld pages in page table cache\n",
-	       quicklist_total_size());
-}
+#ifdef CONFIG_SUPERH32
+/*
+ * Handle trivial transitions between cached and uncached
+ * segments, making use of the 1:1 mapping relationship in
+ * 512MB lowmem.
+ *
+ * This is the offset of the uncached section from its cached alias.
+ * Default value only valid in 29 bit mode, in 32bit mode will be
+ * overridden in pmb_init.
+ */
+unsigned long cached_to_uncached = P2SEG - P1SEG;
+#endif
 
 #ifdef CONFIG_MMU
 static void set_pte_phys(unsigned long addr, unsigned long phys, pgprot_t prot)
@@ -99,9 +70,7 @@ static void set_pte_phys(unsigned long addr, unsigned long phys, pgprot_t prot)
 	}
 
 	set_pte(pte, pfn_pte(phys >> PAGE_SHIFT, prot));
-
-	if (cached_to_uncached)
-		flush_tlb_one(get_asid(), addr);
+	flush_tlb_one(get_asid(), addr);
 }
 
 /*
@@ -154,7 +123,6 @@ void __init page_table_range_init(unsigned long start, unsigned long end,
 		if (!pmd_present(*pmd)) {
 			pte_t *pte_table;
 			pte_table = (pte_t *)alloc_bootmem_low_pages(PAGE_SIZE);
-			memset(pte_table, 0, PAGE_SIZE);
 			pmd_populate_kernel(&init_mm, pmd, pte_table);
 		}
 
@@ -191,7 +159,7 @@ void __init paging_init(void)
 		pg_data_t *pgdat = NODE_DATA(nid);
 		unsigned long low, start_pfn;
 
-		start_pfn = pgdat->bdata->node_boot_start >> PAGE_SHIFT;
+		start_pfn = pgdat->bdata->node_min_pfn;
 		low = pgdat->bdata->node_low_pfn;
 
 		if (max_zone_pfns[ZONE_NORMAL] < low)
@@ -206,15 +174,6 @@ void __init paging_init(void)
 #ifdef CONFIG_SUPERH32
 	/* Set up the uncached fixmap */
 	set_fixmap_nocache(FIX_UNCACHED, __pa(&__uncached_start));
-
-#ifdef CONFIG_29BIT
-	/*
-	 * Handle trivial transitions between cached and uncached
-	 * segments, making use of the 1:1 mapping relationship in
-	 * 512MB lowmem.
-	 */
-	cached_to_uncached = P2SEG - P1SEG;
-#endif
 #endif
 }
 
@@ -306,6 +265,35 @@ void free_initrd_mem(unsigned long start, unsigned long end)
 }
 #endif
 
+#if THREAD_SHIFT < PAGE_SHIFT
+static struct kmem_cache *thread_info_cache;
+
+struct thread_info *alloc_thread_info(struct task_struct *tsk)
+{
+	struct thread_info *ti;
+
+	ti = kmem_cache_alloc(thread_info_cache, GFP_KERNEL);
+	if (unlikely(ti == NULL))
+		return NULL;
+#ifdef CONFIG_DEBUG_STACK_USAGE
+	memset(ti, 0, THREAD_SIZE);
+#endif
+	return ti;
+}
+
+void free_thread_info(struct thread_info *ti)
+{
+	kmem_cache_free(thread_info_cache, ti);
+}
+
+void thread_info_cache_init(void)
+{
+	thread_info_cache = kmem_cache_create("thread_info", THREAD_SIZE,
+					      THREAD_SIZE, 0, NULL);
+	BUG_ON(thread_info_cache == NULL);
+}
+#endif /* THREAD_SHIFT < PAGE_SHIFT */
+
 #ifdef CONFIG_MEMORY_HOTPLUG
 int arch_add_memory(int nid, u64 start, u64 size)
 {
@@ -333,4 +321,4 @@ int memory_add_physaddr_to_nid(u64 addr)
 }
 EXPORT_SYMBOL_GPL(memory_add_physaddr_to_nid);
 #endif
-#endif
+#endif /* CONFIG_MEMORY_HOTPLUG */