Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 247 insertions, 0 deletions

diff --git a/arch/m32r/mm/init.c b/arch/m32r/mm/init.c
new file mode 100644
index 000000000000..bc423d838fb8
--- /dev/null
+++ b/arch/m32r/mm/init.c
@@ -0,0 +1,247 @@
+/*
+ *  linux/arch/m32r/mm/init.c
+ *
+ *  Copyright (c) 2001, 2002  Hitoshi Yamamoto
+ *
+ *  Some code taken from sh version.
+ *    Copyright (C) 1999  Niibe Yutaka
+ *    Based on linux/arch/i386/mm/init.c:
+ *      Copyright (C) 1995  Linus Torvalds
+ */
+
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/mm.h>
+#include <linux/pagemap.h>
+#include <linux/bootmem.h>
+#include <linux/swap.h>
+#include <linux/highmem.h>
+#include <linux/bitops.h>
+#include <linux/nodemask.h>
+#include <asm/types.h>
+#include <asm/processor.h>
+#include <asm/page.h>
+#include <asm/pgtable.h>
+#include <asm/pgalloc.h>
+#include <asm/mmu_context.h>
+#include <asm/setup.h>
+#include <asm/tlb.h>
+
+/* References to section boundaries */
+extern char _text, _etext, _edata;
+extern char __init_begin, __init_end;
+
+pgd_t swapper_pg_dir[1024];
+
+DEFINE_PER_CPU(struct mmu_gather, mmu_gathers);
+
+void show_mem(void)
+{
+	int total = 0, reserved = 0;
+	int shared = 0, cached = 0;
+	int highmem = 0;
+	struct page *page;
+	pg_data_t *pgdat;
+	unsigned long i;
+
+	printk("Mem-info:\n");
+	show_free_areas();
+	printk("Free swap:       %6ldkB\n",nr_swap_pages<<(PAGE_SHIFT-10));
+	for_each_pgdat(pgdat) {
+		for (i = 0; i < pgdat->node_spanned_pages; ++i) {
+			page = pgdat->node_mem_map + i;
+			total++;
+			if (PageHighMem(page))
+				highmem++;
+			if (PageReserved(page))
+				reserved++;
+			else if (PageSwapCache(page))
+				cached++;
+			else if (page_count(page))
+				shared += page_count(page) - 1;
+		}
+	}
+	printk("%d pages of RAM\n", total);
+	printk("%d pages of HIGHMEM\n",highmem);
+	printk("%d reserved pages\n",reserved);
+	printk("%d pages shared\n",shared);
+	printk("%d pages swap cached\n",cached);
+}
+
+/*
+ * Cache of MMU context last used.
+ */
+#ifndef CONFIG_SMP
+unsigned long mmu_context_cache_dat;
+#else
+unsigned long mmu_context_cache_dat[NR_CPUS];
+#endif
+static unsigned long hole_pages;
+
+/*
+ * function prototype
+ */
+void __init paging_init(void);
+void __init mem_init(void);
+void free_initmem(void);
+#ifdef CONFIG_BLK_DEV_INITRD
+void free_initrd_mem(unsigned long, unsigned long);
+#endif
+
+/* It'd be good if these lines were in the standard header file. */
+#define START_PFN(nid)	\
+	(NODE_DATA(nid)->bdata->node_boot_start >> PAGE_SHIFT)
+#define MAX_LOW_PFN(nid)	(NODE_DATA(nid)->bdata->node_low_pfn)
+
+#ifndef CONFIG_DISCONTIGMEM
+unsigned long __init zone_sizes_init(void)
+{
+	unsigned long  zones_size[MAX_NR_ZONES] = {0, 0, 0};
+	unsigned long  max_dma;
+	unsigned long  low;
+	unsigned long  start_pfn;
+
+#ifdef CONFIG_MMU
+	start_pfn = START_PFN(0);
+	max_dma = virt_to_phys((char *)MAX_DMA_ADDRESS) >> PAGE_SHIFT;
+	low = MAX_LOW_PFN(0);
+
+	if (low < max_dma){
+		zones_size[ZONE_DMA] = low - start_pfn;
+		zones_size[ZONE_NORMAL] = 0;
+	} else {
+		zones_size[ZONE_DMA] = low - start_pfn;
+		zones_size[ZONE_NORMAL] = low - max_dma;
+	}
+#else
+	zones_size[ZONE_DMA] = 0 >> PAGE_SHIFT;
+	zones_size[ZONE_NORMAL] = __MEMORY_SIZE >> PAGE_SHIFT;
+	start_pfn = __MEMORY_START >> PAGE_SHIFT;
+#endif /* CONFIG_MMU */
+
+	free_area_init_node(0, NODE_DATA(0), zones_size, start_pfn, 0);
+
+	return 0;
+}
+#else	/* CONFIG_DISCONTIGMEM */
+extern unsigned long zone_sizes_init(void);
+#endif	/* CONFIG_DISCONTIGMEM */
+
+/*======================================================================*
+ * paging_init() : sets up the page tables
+ *======================================================================*/
+void __init paging_init(void)
+{
+#ifdef CONFIG_MMU
+	int  i;
+	pgd_t *pg_dir;
+
+	/* We don't need kernel mapping as hardware support that. */
+	pg_dir = swapper_pg_dir;
+
+	for (i = 0 ; i < USER_PTRS_PER_PGD * 2 ; i++)
+		pgd_val(pg_dir[i]) = 0;
+#endif /* CONFIG_MMU */
+	hole_pages = zone_sizes_init();
+}
+
+int __init reservedpages_count(void)
+{
+	int reservedpages, nid, i;
+
+	reservedpages = 0;
+	for_each_online_node(nid)
+		for (i = 0 ; i < MAX_LOW_PFN(nid) - START_PFN(nid) ; i++)
+			if (PageReserved(NODE_DATA(nid)->node_mem_map + i))
+				reservedpages++;
+
+	return reservedpages;
+}
+
+/*======================================================================*
+ * mem_init() :
+ * orig : arch/sh/mm/init.c
+ *======================================================================*/
+void __init mem_init(void)
+{
+	int codesize, reservedpages, datasize, initsize;
+	int nid;
+#ifndef CONFIG_MMU
+	extern unsigned long memory_end;
+#endif
+
+	num_physpages = 0;
+	for_each_online_node(nid)
+		num_physpages += MAX_LOW_PFN(nid) - START_PFN(nid) + 1;
+
+	num_physpages -= hole_pages;
+
+#ifndef CONFIG_DISCONTIGMEM
+	max_mapnr = num_physpages;
+#endif	/* CONFIG_DISCONTIGMEM */
+
+#ifdef CONFIG_MMU
+	high_memory = (void *)__va(PFN_PHYS(MAX_LOW_PFN(0)));
+#else
+	high_memory = (void *)(memory_end & PAGE_MASK);
+#endif /* CONFIG_MMU */
+
+	/* clear the zero-page */
+	memset(empty_zero_page, 0, PAGE_SIZE);
+
+	/* this will put all low memory onto the freelists */
+	for_each_online_node(nid)
+		totalram_pages += free_all_bootmem_node(NODE_DATA(nid));
+
+	reservedpages = reservedpages_count() - hole_pages;
+	codesize = (unsigned long) &_etext - (unsigned long)&_text;
+	datasize = (unsigned long) &_edata - (unsigned long)&_etext;
+	initsize = (unsigned long) &__init_end - (unsigned long)&__init_begin;
+
+	printk(KERN_INFO "Memory: %luk/%luk available (%dk kernel code, "
+		"%dk reserved, %dk data, %dk init)\n",
+		(unsigned long) nr_free_pages() << (PAGE_SHIFT-10),
+		num_physpages << (PAGE_SHIFT-10),
+		codesize >> 10,
+		reservedpages << (PAGE_SHIFT-10),
+		datasize >> 10,
+		initsize >> 10);
+}
+
+/*======================================================================*
+ * free_initmem() :
+ * orig : arch/sh/mm/init.c
+ *======================================================================*/
+void free_initmem(void)
+{
+	unsigned long addr;
+
+	addr = (unsigned long)(&__init_begin);
+	for (; addr < (unsigned long)(&__init_end); addr += PAGE_SIZE) {
+		ClearPageReserved(virt_to_page(addr));
+		set_page_count(virt_to_page(addr), 1);
+		free_page(addr);
+		totalram_pages++;
+	}
+	printk (KERN_INFO "Freeing unused kernel memory: %dk freed\n", \
+	  (int)(&__init_end - &__init_begin) >> 10);
+}
+
+#ifdef CONFIG_BLK_DEV_INITRD
+/*======================================================================*
+ * free_initrd_mem() :
+ * orig : arch/sh/mm/init.c
+ *======================================================================*/
+void free_initrd_mem(unsigned long start, unsigned long end)
+{
+	unsigned long p;
+	for (p = start; p < end; p += PAGE_SIZE) {
+		ClearPageReserved(virt_to_page(p));
+		set_page_count(virt_to_page(p), 1);
+		free_page(p);
+		totalram_pages++;
+	}
+	printk (KERN_INFO "Freeing initrd memory: %ldk freed\n", (end - start) >> 10);
+}
+#endif
+