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mips: sgi-ip27: switch from DISCONTIGMEM to SPARSEMEM

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The memory initialization of SGI-IP27 is already half-way to support
SPARSEMEM. It only had free_bootmem_with_active_regions() left-overs
interfering with sparse_memory_present_with_active_regions().

Replace these calls with simpler memblocks_present() call in prom_meminit()
and adjust arch/mips/Kconfig to enable SPARSEMEM and SPARSEMEM_EXTREME for
SGI-IP27.

Co-developed-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
Signed-off-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
Signed-off-by: Paul Burton <paul.burton@mips.com>
Cc: linux-mips@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
This commit is contained in:
Mike Rapoport 2019-09-16 14:13:10 +03:00 committed by Paul Burton
parent e4acfbc18f
commit 397dc00e24
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2 changed files with 4 additions and 14 deletions
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12
arch/mips/Kconfig
View File

@ -674,6 +674,7 @@ config SGI_IP22
config SGI_IP27
bool "SGI IP27 (Origin200/2000)"
select ARCH_HAS_PHYS_TO_DMA
select ARCH_SPARSEMEM_ENABLE
select FW_ARC
select FW_ARC64
select BOOT_ELF64
@ -2618,18 +2619,9 @@ config ARCH_FLATMEM_ENABLE
def_bool y
depends on !NUMA && !CPU_LOONGSON2
config ARCH_DISCONTIGMEM_ENABLE
bool
default y if SGI_IP27
help
Say Y to support efficient handling of discontiguous physical memory,
for architectures which are either NUMA (Non-Uniform Memory Access)
or have huge holes in the physical address space for other reasons.
See <file:Documentation/vm/numa.rst> for more.
config ARCH_SPARSEMEM_ENABLE
bool
select SPARSEMEM_STATIC
select SPARSEMEM_STATIC if !SGI_IP27
config NUMA
bool "NUMA Support"

6
arch/mips/sgi-ip27/ip27-memory.c
View File

@ -385,12 +385,8 @@ static void __init node_mem_init(nasid_t node)
slot_freepfn += PFN_UP(sizeof(struct pglist_data) +
sizeof(struct hub_data));
free_bootmem_with_active_regions(node, end_pfn);
memblock_reserve(slot_firstpfn << PAGE_SHIFT,
((slot_freepfn - slot_firstpfn) << PAGE_SHIFT));
sparse_memory_present_with_active_regions(node);
}
/*
@ -423,6 +419,8 @@ void __init prom_meminit(void)
}
__node_data[node] = &null_node;
}
memblocks_present();
}
void __init prom_free_prom_memory(void)