add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/arch/c6x/mm/init.c
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@@ -1,17 +1,14 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  *  Port on Texas Instruments TMS320C6x architecture
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  *
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  *  Copyright (C) 2004, 2009, 2010, 2011 Texas Instruments Incorporated
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  *  Author: Aurelien Jacquiot (aurelien.jacquiot@jaluna.com)
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- *
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- *  This program is free software; you can redistribute it and/or modify
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- *  it under the terms of the GNU General Public License version 2 as
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- *  published by the Free Software Foundation.
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  */
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 #include <linux/mm.h>
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 #include <linux/swap.h>
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 #include <linux/module.h>
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-#include <linux/bootmem.h>
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+#include <linux/memblock.h>
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 #ifdef CONFIG_BLK_DEV_RAM
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 #include <linux/blkdev.h>
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 #endif
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@@ -36,10 +33,13 @@
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 void __init paging_init(void)
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 {
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 	struct pglist_data *pgdat = NODE_DATA(0);
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-	unsigned long zones_size[MAX_NR_ZONES] = {0, };
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+	unsigned long max_zone_pfn[MAX_NR_ZONES] = {0, };
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-	empty_zero_page      = (unsigned long) alloc_bootmem_pages(PAGE_SIZE);
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-	memset((void *)empty_zero_page, 0, PAGE_SIZE);
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+	empty_zero_page      = (unsigned long) memblock_alloc(PAGE_SIZE,
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+							      PAGE_SIZE);
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+	if (!empty_zero_page)
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+		panic("%s: Failed to allocate %lu bytes align=0x%lx\n",
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+		      __func__, PAGE_SIZE, PAGE_SIZE);
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 	/*
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 	 * Set up user data space
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@@ -49,11 +49,9 @@
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 	/*
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 	 * Define zones
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 	 */
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-	zones_size[ZONE_NORMAL] = (memory_end - PAGE_OFFSET) >> PAGE_SHIFT;
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-	pgdat->node_zones[ZONE_NORMAL].zone_start_pfn =
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-		__pa(PAGE_OFFSET) >> PAGE_SHIFT;
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+	max_zone_pfn[ZONE_NORMAL] = memory_end >> PAGE_SHIFT;
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-	free_area_init(zones_size);
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+	free_area_init(max_zone_pfn);
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 }
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 void __init mem_init(void)
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@@ -61,19 +59,7 @@
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 	high_memory = (void *)(memory_end & PAGE_MASK);
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 	/* this will put all memory onto the freelists */
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-	free_all_bootmem();
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+	memblock_free_all();
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 	mem_init_print_info(NULL);
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-}
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-
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-#ifdef CONFIG_BLK_DEV_INITRD
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-void __init free_initrd_mem(unsigned long start, unsigned long end)
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-{
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-	free_reserved_area((void *)start, (void *)end, -1, "initrd");
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-}
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-#endif
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-
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-void __init free_initmem(void)
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-{
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-	free_initmem_default(-1);
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 }