e7e8de5918
[sfr@canb.auug.org.au: fix powerpc build] Signed-off-by: Tang Chen <tangchen@cn.fujitsu.com> Reviewed-by: Zhang Yanfei <zhangyanfei@cn.fujitsu.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: "Rafael J . Wysocki" <rjw@sisk.pl> Cc: Chen Tang <imtangchen@gmail.com> Cc: Gong Chen <gong.chen@linux.intel.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Jiang Liu <jiang.liu@huawei.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Lai Jiangshan <laijs@cn.fujitsu.com> Cc: Larry Woodman <lwoodman@redhat.com> Cc: Len Brown <lenb@kernel.org> Cc: Liu Jiang <jiang.liu@huawei.com> Cc: Mel Gorman <mgorman@suse.de> Cc: Michal Nazarewicz <mina86@mina86.com> Cc: Minchan Kim <minchan@kernel.org> Cc: Prarit Bhargava <prarit@redhat.com> Cc: Rik van Riel <riel@redhat.com> Cc: Taku Izumi <izumi.taku@jp.fujitsu.com> Cc: Tejun Heo <tj@kernel.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Thomas Renninger <trenn@suse.de> Cc: Toshi Kani <toshi.kani@hp.com> Cc: Vasilis Liaskovitis <vasilis.liaskovitis@profitbricks.com> Cc: Wanpeng Li <liwanp@linux.vnet.ibm.com> Cc: Wen Congyang <wency@cn.fujitsu.com> Cc: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com> Cc: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
83 lines
2.4 KiB
C
83 lines
2.4 KiB
C
/*
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* Multiple memory node support for Meta machines
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*
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* Copyright (C) 2007 Paul Mundt
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* Copyright (C) 2010 Imagination Technologies Ltd.
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*/
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#include <linux/export.h>
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#include <linux/bootmem.h>
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#include <linux/memblock.h>
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#include <linux/mm.h>
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#include <linux/numa.h>
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#include <linux/pfn.h>
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#include <asm/sections.h>
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struct pglist_data *node_data[MAX_NUMNODES] __read_mostly;
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EXPORT_SYMBOL_GPL(node_data);
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extern char _heap_start[];
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/*
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* On Meta machines the conventional approach is to stash system RAM
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* in node 0, and other memory blocks in to node 1 and up, ordered by
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* latency. Each node's pgdat is node-local at the beginning of the node,
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* immediately followed by the node mem map.
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*/
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void __init setup_bootmem_node(int nid, unsigned long start, unsigned long end)
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{
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unsigned long bootmap_pages, bootmem_paddr;
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unsigned long start_pfn, end_pfn;
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unsigned long pgdat_paddr;
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/* Don't allow bogus node assignment */
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BUG_ON(nid >= MAX_NUMNODES || nid <= 0);
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start_pfn = start >> PAGE_SHIFT;
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end_pfn = end >> PAGE_SHIFT;
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memblock_add(start, end - start);
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memblock_set_node(PFN_PHYS(start_pfn),
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PFN_PHYS(end_pfn - start_pfn),
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&memblock.memory, nid);
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/* Node-local pgdat */
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pgdat_paddr = memblock_alloc_base(sizeof(struct pglist_data),
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SMP_CACHE_BYTES, end);
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NODE_DATA(nid) = __va(pgdat_paddr);
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memset(NODE_DATA(nid), 0, sizeof(struct pglist_data));
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NODE_DATA(nid)->bdata = &bootmem_node_data[nid];
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NODE_DATA(nid)->node_start_pfn = start_pfn;
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NODE_DATA(nid)->node_spanned_pages = end_pfn - start_pfn;
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/* Node-local bootmap */
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bootmap_pages = bootmem_bootmap_pages(end_pfn - start_pfn);
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bootmem_paddr = memblock_alloc_base(bootmap_pages << PAGE_SHIFT,
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PAGE_SIZE, end);
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init_bootmem_node(NODE_DATA(nid), bootmem_paddr >> PAGE_SHIFT,
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start_pfn, end_pfn);
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free_bootmem_with_active_regions(nid, end_pfn);
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/* Reserve the pgdat and bootmap space with the bootmem allocator */
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reserve_bootmem_node(NODE_DATA(nid), pgdat_paddr & PAGE_MASK,
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sizeof(struct pglist_data), BOOTMEM_DEFAULT);
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reserve_bootmem_node(NODE_DATA(nid), bootmem_paddr,
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bootmap_pages << PAGE_SHIFT, BOOTMEM_DEFAULT);
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/* It's up */
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node_set_online(nid);
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/* Kick sparsemem */
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sparse_memory_present_with_active_regions(nid);
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}
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void __init __weak soc_mem_setup(void)
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{
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}
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