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ia64: split virtual map initialization out of paging_init() 

For both FLATMEM and DISCONTIGMEM/SPARSEMEM the virtual map initialization
is spread over paging_init() for no good reason.

Split out the bits related to virtual map initialization to a helper
functions, one for FLATMEM and another for !FLATMEM configurations.

Link: https://lkml.kernel.org/r/20201101170454.9567-6-rppt@kernel.org
Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Greg Ungerer <gerg@linux-m68k.org>
Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Meelis Roos <mroos@linux.ee>
Cc: Michael Schmitz <schmitzmic@gmail.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Vineet Gupta <vgupta@synopsys.com>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Mike Rapoport 2020-12-14 19:09:43 -08:00 committed by Linus Torvalds
parent b90b554768
commit 1f11212997
2 changed files with 40 additions and 31 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

34
arch/ia64/mm/contig.c
View File

@ -166,21 +166,8 @@ find_memory (void)
alloc_per_cpu_data();
}
/*
* Set up the page tables.
*/
void __init
paging_init (void)
static void __init virtual_map_init(void)
{
unsigned long max_dma;
unsigned long max_zone_pfns[MAX_NR_ZONES];
memset(max_zone_pfns, 0, sizeof(max_zone_pfns));
max_dma = virt_to_phys((void *) MAX_DMA_ADDRESS) >> PAGE_SHIFT;
max_zone_pfns[ZONE_DMA32] = max_dma;
max_zone_pfns[ZONE_NORMAL] = max_low_pfn;
#ifdef CONFIG_VIRTUAL_MEM_MAP
efi_memmap_walk(find_largest_hole, (u64 *)&max_gap);
if (max_gap < LARGE_GAP) {
@ -206,6 +193,25 @@ paging_init (void)
printk("Virtual mem_map starts at 0x%p\n", mem_map);
}
#endif /* !CONFIG_VIRTUAL_MEM_MAP */
}
/*
* Set up the page tables.
*/
void __init
paging_init (void)
{
unsigned long max_dma;
unsigned long max_zone_pfns[MAX_NR_ZONES];
memset(max_zone_pfns, 0, sizeof(max_zone_pfns));
max_dma = virt_to_phys((void *) MAX_DMA_ADDRESS) >> PAGE_SHIFT;
max_zone_pfns[ZONE_DMA32] = max_dma;
max_zone_pfns[ZONE_NORMAL] = max_low_pfn;
virtual_map_init();
free_area_init(max_zone_pfns);
zero_page_memmap_ptr = virt_to_page(ia64_imva(empty_zero_page));
}

37
arch/ia64/mm/discontig.c
View File

@ -584,6 +584,25 @@ void call_pernode_memory(unsigned long start, unsigned long len, void *arg)
}
}
static void __init virtual_map_init(void)
{
#ifdef CONFIG_VIRTUAL_MEM_MAP
int node;
VMALLOC_END -= PAGE_ALIGN(ALIGN(max_low_pfn, MAX_ORDER_NR_PAGES) *
sizeof(struct page));
vmem_map = (struct page *) VMALLOC_END;
efi_memmap_walk(create_mem_map_page_table, NULL);
printk("Virtual mem_map starts at 0x%p\n", vmem_map);
for_each_online_node(node) {
unsigned long pfn_offset = mem_data[node].min_pfn;
NODE_DATA(node)->node_mem_map = vmem_map + pfn_offset;
}
#endif
}
/**
* paging_init - setup page tables
*
@ -593,29 +612,13 @@ void call_pernode_memory(unsigned long start, unsigned long len, void *arg)
void __init paging_init(void)
{
unsigned long max_dma;
unsigned long pfn_offset = 0;
int node;
unsigned long max_zone_pfns[MAX_NR_ZONES];
max_dma = virt_to_phys((void *) MAX_DMA_ADDRESS) >> PAGE_SHIFT;
sparse_init();
#ifdef CONFIG_VIRTUAL_MEM_MAP
VMALLOC_END -= PAGE_ALIGN(ALIGN(max_low_pfn, MAX_ORDER_NR_PAGES) *
sizeof(struct page));
vmem_map = (struct page *) VMALLOC_END;
efi_memmap_walk(create_mem_map_page_table, NULL);
printk("Virtual mem_map starts at 0x%p\n", vmem_map);
#endif
for_each_online_node(node) {
pfn_offset = mem_data[node].min_pfn;
#ifdef CONFIG_VIRTUAL_MEM_MAP
NODE_DATA(node)->node_mem_map = vmem_map + pfn_offset;
#endif
}
virtual_map_init();
memset(max_zone_pfns, 0, sizeof(max_zone_pfns));
max_zone_pfns[ZONE_DMA32] = max_dma;