efDataDiscreteRateMining rtuTemperatureHumidityDataOperation.c 袁明明 commit at 2020-09-01

efDataDiscreteRateMining/databaseOperation/rtuTemperatureHumidityDataOperation.c

@@ -0,0 +1,186 @@
+/*
+ *  linux/arch/arm/mm/init.c
+ *
+ *  Copyright (C) 1995-2005 Russell King
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/swap.h>
+#include <linux/init.h>
+#include <linux/bootmem.h>
+#include <linux/mman.h>
+#include <linux/export.h>
+#include <linux/nodemask.h>
+#include <linux/initrd.h>
+#include <linux/of_fdt.h>
+#include <linux/highmem.h>
+#include <linux/gfp.h>
+#include <linux/memblock.h>
+#include <linux/dma-contiguous.h>
+#include <linux/sizes.h>
+
+#include <asm/mach-types.h>
+#include <asm/memblock.h>
+#include <asm/prom.h>
+#include <asm/sections.h>
+#include <asm/setup.h>
+#include <asm/tlb.h>
+#include <asm/fixmap.h>
+
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+
+#include "mm.h"
+
+static unsigned long phys_initrd_start __initdata = 0;
+static unsigned long phys_initrd_size __initdata = 0;
+
+static int __init early_initrd(char *p)
+{
+	unsigned long start, size;
+	char *endp;
+
+	start = memparse(p, &endp);
+	if (*endp == ',') {
+		size = memparse(endp + 1, NULL);
+
+		phys_initrd_start = start;
+		phys_initrd_size = size;
+	}
+	return 0;
+}
+early_param("initrd", early_initrd);
+
+static int __init parse_tag_initrd(const struct tag *tag)
+{
+	printk(KERN_WARNING "ATAG_INITRD is deprecated; "
+		"please update your bootloader.\n");
+	phys_initrd_start = __virt_to_phys(tag->u.initrd.start);
+	phys_initrd_size = tag->u.initrd.size;
+	return 0;
+}
+
+__tagtable(ATAG_INITRD, parse_tag_initrd);
+
+static int __init parse_tag_initrd2(const struct tag *tag)
+{
+	phys_initrd_start = tag->u.initrd.start;
+	phys_initrd_size = tag->u.initrd.size;
+	return 0;
+}
+
+__tagtable(ATAG_INITRD2, parse_tag_initrd2);
+
+#ifdef CONFIG_OF_FLATTREE
+void __init early_init_dt_setup_initrd_arch(unsigned long start, unsigned long end)
+{
+	phys_initrd_start = start;
+	phys_initrd_size = end - start;
+}
+#endif /* CONFIG_OF_FLATTREE */
+
+/*
+ * This keeps memory configuration data used by a couple memory
+ * initialization functions, as well as show_mem() for the skipping
+ * of holes in the memory map.  It is populated by arm_add_memory().
+ */
+struct meminfo meminfo;
+
+void show_mem(unsigned int filter)
+{
+	int free = 0, total = 0, reserved = 0;
+	int shared = 0, cached = 0, slab = 0, i;
+	struct meminfo * mi = &meminfo;
+
+	printk("Mem-info:\n");
+	show_free_areas(filter);
+
+	for_each_bank (i, mi) {
+		struct membank *bank = &mi->bank[i];
+		unsigned int pfn1, pfn2;
+		struct page *page, *end;
+
+		pfn1 = bank_pfn_start(bank);
+		pfn2 = bank_pfn_end(bank);
+
+		page = pfn_to_page(pfn1);
+		end  = pfn_to_page(pfn2 - 1) + 1;
+
+		do {
+			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;
+			page++;
+		} while (page < end);
+	}
+
+	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);
+}
+
+static void __init find_limits(unsigned long *min, unsigned long *max_low,
+			       unsigned long *max_high)
+{
+	struct meminfo *mi = &meminfo;
+	int i;
+
+	/* This assumes the meminfo array is properly sorted */
+	*min = bank_pfn_start(&mi->bank[0]);
+	for_each_bank (i, mi)
+		if (mi->bank[i].highmem)
+				break;
+	*max_low = bank_pfn_end(&mi->bank[i - 1]);
+	*max_high = bank_pfn_end(&mi->bank[mi->nr_banks - 1]);
+}
+
+static void __init arm_bootmem_init(unsigned long start_pfn,
+	unsigned long end_pfn)
+{
+	struct memblock_region *reg;
+	unsigned int boot_pages;
+	phys_addr_t bitmap;
+	pg_data_t *pgdat;
+
+	/*
+	 * Allocate the bootmem bitmap page.  This must be in a region
+	 * of memory which has already been mapped.
+	 */
+	boot_pages = bootmem_bootmap_pages(end_pfn - start_pfn);
+	bitmap = memblock_alloc_base(boot_pages << PAGE_SHIFT, L1_CACHE_BYTES,
+				__pfn_to_phys(end_pfn));
+
+	/*
+	 * Initialise the bootmem allocator, handing the
+	 * memory banks over to bootmem.
+	 */
+	node_set_online(0);
+	pgdat = NODE_DATA(0);
+	init_bootmem_node(pgdat, __phys_to_pfn(bitmap), start_pfn, end_pfn);
+
+	/* Free the lowmem regions from memblock into bootmem. */
+	for_each_memblock(memory, reg) {
+		unsigned long start = memblock_region_memory_base_pfn(reg);
+		unsigned long end = memblock_region_memory_end_pfn(reg);
+
+		if (end >= end_pfn)
+			end = end_pfn;
+		if (start >= end)
+			break;
+
+		free_bootmem(__pfn_to_phys(start), (end - start) << PAGE_SHIFT);