Commit 0608f70c authored by Tejun Heo's avatar Tejun Heo Committed by H. Peter Anvin
Browse files

x86: Use HAVE_MEMBLOCK_NODE_MAP 



From 5732e1247898d67cbf837585150fe9f68974671d Mon Sep 17 00:00:00 2001
From: Tejun Heo <tj@kernel.org>
Date: Thu, 14 Jul 2011 11:22:16 +0200

Convert x86 to HAVE_MEMBLOCK_NODE_MAP.  The only difference in memory
handling is that allocations can't no longer cross node boundaries
whether they're node affine or not, which shouldn't matter at all.

This conversion will enable further simplification of boot memory
handling.

-v2: Fix build failure on !NUMA configurations discovered by hpa.

Signed-off-by: default avatarTejun Heo <tj@kernel.org>
Link: http://lkml.kernel.org/r/20110714094423.GG3455@htj.dyndns.org


Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Signed-off-by: default avatarH. Peter Anvin <hpa@linux.intel.com>
parent 7c0caeb8

arch/x86/Kconfig

+1 −0
Original line number Diff line number Diff line
@@ -25,6 +25,7 @@ config X86 
	select HAVE_IOREMAP_PROT

	select HAVE_KPROBES

	select HAVE_MEMBLOCK

	select HAVE_MEMBLOCK_NODE_MAP

	select ARCH_WANT_OPTIONAL_GPIOLIB

	select ARCH_WANT_FRAME_POINTERS

	select HAVE_DMA_ATTRS

arch/x86/include/asm/memblock.h

+0 −2
Original line number Diff line number Diff line
@@ -12,8 +12,6 @@ int __get_free_all_memory_range(struct range **range, int nodeid, 
			 unsigned long start_pfn, unsigned long end_pfn);

int get_free_all_memory_range(struct range **rangep, int nodeid);



void memblock_x86_register_active_regions(int nid, unsigned long start_pfn,

					 unsigned long last_pfn);

u64 memblock_x86_hole_size(u64 start, u64 end);

u64 memblock_x86_free_memory_in_range(u64 addr, u64 limit);

u64 memblock_x86_memory_in_range(u64 addr, u64 limit);

arch/x86/mm/init_32.c

+4 −4
Original line number Diff line number Diff line
@@ -650,18 +650,18 @@ void __init initmem_init(void) 
	highstart_pfn = highend_pfn = max_pfn;

	if (max_pfn > max_low_pfn)

		highstart_pfn = max_low_pfn;

	memblock_x86_register_active_regions(0, 0, highend_pfn);

	sparse_memory_present_with_active_regions(0);

	printk(KERN_NOTICE "%ldMB HIGHMEM available.\n",

		pages_to_mb(highend_pfn - highstart_pfn));

	num_physpages = highend_pfn;

	high_memory = (void *) __va(highstart_pfn * PAGE_SIZE - 1) + 1;

#else

	memblock_x86_register_active_regions(0, 0, max_low_pfn);

	sparse_memory_present_with_active_regions(0);

	num_physpages = max_low_pfn;

	high_memory = (void *) __va(max_low_pfn * PAGE_SIZE - 1) + 1;

#endif



	memblock_set_node(0, (phys_addr_t)ULLONG_MAX, 0);

	sparse_memory_present_with_active_regions(0);



#ifdef CONFIG_FLATMEM

	max_mapnr = num_physpages;

#endif

arch/x86/mm/init_64.c

+1 −1
Original line number Diff line number Diff line
@@ -607,7 +607,7 @@ kernel_physical_mapping_init(unsigned long start, 
#ifndef CONFIG_NUMA

void __init initmem_init(void)

{

	memblock_x86_register_active_regions(0, 0, max_pfn);

	memblock_set_node(0, (phys_addr_t)ULLONG_MAX, 0);

}

#endif

arch/x86/mm/memblock.c

+0 −14
Original line number Diff line number Diff line
@@ -283,20 +283,6 @@ static int __init memblock_x86_find_active_region(const struct memblock_region * 
	return 1;

}



/* Walk the memblock.memory map and register active regions within a node */

void __init memblock_x86_register_active_regions(int nid, unsigned long start_pfn,

					 unsigned long last_pfn)

{

	unsigned long ei_startpfn;

	unsigned long ei_endpfn;

	struct memblock_region *r;



	for_each_memblock(memory, r)

		if (memblock_x86_find_active_region(r, start_pfn, last_pfn,

					   &ei_startpfn, &ei_endpfn))

			add_active_range(nid, ei_startpfn, ei_endpfn);

}



/*

 * Find the hole size (in bytes) in the memory range.

 * @start: starting address of the memory range to scan

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