From: Heiko Carstens Date: Wed, 4 Oct 2006 18:02:19 +0000 (+0200) Subject: [S390] Have s390 use add_active_range() and free_area_init_nodes. X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=7676bef9c183fd573822cac9992927ef596d584c;p=linux-beck.git [S390] Have s390 use add_active_range() and free_area_init_nodes. Size zones and holes in an architecture independent manner for s390. Signed-off-by: Heiko Carstens --- diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig index f900a516f099..51c2dfe89c62 100644 --- a/arch/s390/Kconfig +++ b/arch/s390/Kconfig @@ -233,6 +233,9 @@ config WARN_STACK_SIZE This allows you to specify the maximum frame size a function may have without the compiler complaining about it. +config ARCH_POPULATES_NODE_MAP + def_bool y + source "mm/Kconfig" comment "I/O subsystem configuration" diff --git a/arch/s390/defconfig b/arch/s390/defconfig index 62950f53ef5b..b6cad75fd1f4 100644 --- a/arch/s390/defconfig +++ b/arch/s390/defconfig @@ -118,6 +118,7 @@ CONFIG_PACK_STACK=y CONFIG_CHECK_STACK=y CONFIG_STACK_GUARD=256 # CONFIG_WARN_STACK is not set +CONFIG_ARCH_POPULATES_NODE_MAP=y CONFIG_SELECT_MEMORY_MODEL=y CONFIG_FLATMEM_MANUAL=y # CONFIG_DISCONTIGMEM_MANUAL is not set diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c index a21cfbb9d97e..49f2b68e32b1 100644 --- a/arch/s390/kernel/setup.c +++ b/arch/s390/kernel/setup.c @@ -70,7 +70,6 @@ struct { #define CHUNK_READ_WRITE 0 #define CHUNK_READ_ONLY 1 volatile int __cpu_logical_map[NR_CPUS]; /* logical cpu to cpu address */ -unsigned long __initdata zholes_size[MAX_NR_ZONES]; static unsigned long __initdata memory_end; /* @@ -358,21 +357,6 @@ void machine_power_off(void) */ void (*pm_power_off)(void) = machine_power_off; -static void __init -add_memory_hole(unsigned long start, unsigned long end) -{ - unsigned long dma_pfn = MAX_DMA_ADDRESS >> PAGE_SHIFT; - - if (end <= dma_pfn) - zholes_size[ZONE_DMA] += end - start + 1; - else if (start > dma_pfn) - zholes_size[ZONE_NORMAL] += end - start + 1; - else { - zholes_size[ZONE_DMA] += dma_pfn - start + 1; - zholes_size[ZONE_NORMAL] += end - dma_pfn; - } -} - static int __init early_parse_mem(char *p) { memory_end = memparse(p, &p); @@ -494,7 +478,6 @@ setup_memory(void) { unsigned long bootmap_size; unsigned long start_pfn, end_pfn, init_pfn; - unsigned long last_rw_end; int i; /* @@ -543,46 +526,34 @@ setup_memory(void) #endif /* - * Initialize the boot-time allocator (with low memory only): + * Initialize the boot-time allocator */ bootmap_size = init_bootmem(start_pfn, end_pfn); /* * Register RAM areas with the bootmem allocator. */ - last_rw_end = start_pfn; for (i = 0; i < MEMORY_CHUNKS && memory_chunk[i].size > 0; i++) { - unsigned long start_chunk, end_chunk; + unsigned long start_chunk, end_chunk, pfn; if (memory_chunk[i].type != CHUNK_READ_WRITE) continue; - start_chunk = (memory_chunk[i].addr + PAGE_SIZE - 1); - start_chunk >>= PAGE_SHIFT; - end_chunk = (memory_chunk[i].addr + memory_chunk[i].size); - end_chunk >>= PAGE_SHIFT; - if (start_chunk < start_pfn) - start_chunk = start_pfn; - if (end_chunk > end_pfn) - end_chunk = end_pfn; - if (start_chunk < end_chunk) { - /* Initialize storage key for RAM pages */ - for (init_pfn = start_chunk ; init_pfn < end_chunk; - init_pfn++) - page_set_storage_key(init_pfn << PAGE_SHIFT, - PAGE_DEFAULT_KEY); - free_bootmem(start_chunk << PAGE_SHIFT, - (end_chunk - start_chunk) << PAGE_SHIFT); - if (last_rw_end < start_chunk) - add_memory_hole(last_rw_end, start_chunk - 1); - last_rw_end = end_chunk; - } + start_chunk = PFN_DOWN(memory_chunk[i].addr); + end_chunk = start_chunk + PFN_DOWN(memory_chunk[i].size) - 1; + end_chunk = min(end_chunk, end_pfn); + if (start_chunk >= end_chunk) + continue; + add_active_range(0, start_chunk, end_chunk); + pfn = max(start_chunk, start_pfn); + for (; pfn <= end_chunk; pfn++) + page_set_storage_key(PFN_PHYS(pfn), PAGE_DEFAULT_KEY); } psw_set_key(PAGE_DEFAULT_KEY); - if (last_rw_end < end_pfn - 1) - add_memory_hole(last_rw_end, end_pfn - 1); + free_bootmem_with_active_regions(0, max_pfn); + reserve_bootmem(0, PFN_PHYS(start_pfn)); /* * Reserve the bootmem bitmap itself as well. We do this in two diff --git a/arch/s390/mm/init.c b/arch/s390/mm/init.c index 127044e1707c..c302508ae31e 100644 --- a/arch/s390/mm/init.c +++ b/arch/s390/mm/init.c @@ -82,7 +82,6 @@ void show_mem(void) printk("%d pages swap cached\n",cached); } -extern unsigned long __initdata zholes_size[]; /* * paging_init() sets up the page tables */ @@ -99,16 +98,15 @@ void __init paging_init(void) unsigned long pgdir_k = (__pa(swapper_pg_dir) & PAGE_MASK) | _KERNSEG_TABLE; static const int ssm_mask = 0x04000000L; unsigned long ro_start_pfn, ro_end_pfn; - unsigned long zones_size[MAX_NR_ZONES]; + unsigned long max_zone_pfns[MAX_NR_ZONES]; ro_start_pfn = PFN_DOWN((unsigned long)&__start_rodata); ro_end_pfn = PFN_UP((unsigned long)&__end_rodata); - memset(zones_size, 0, sizeof(zones_size)); - zones_size[ZONE_DMA] = max_low_pfn; - free_area_init_node(0, &contig_page_data, zones_size, - __pa(PAGE_OFFSET) >> PAGE_SHIFT, - zholes_size); + memset(max_zone_pfns, 0, sizeof(max_zone_pfns)); + max_zone_pfns[ZONE_DMA] = max_low_pfn; + max_zone_pfns[ZONE_NORMAL] = max_low_pfn; + free_area_init_nodes(max_zone_pfns); /* unmap whole virtual address space */ @@ -153,7 +151,6 @@ void __init paging_init(void) __raw_local_irq_ssm(ssm_mask); local_flush_tlb(); - return; } #else /* CONFIG_64BIT */ @@ -169,26 +166,16 @@ void __init paging_init(void) unsigned long pgdir_k = (__pa(swapper_pg_dir) & PAGE_MASK) | _KERN_REGION_TABLE; static const int ssm_mask = 0x04000000L; - unsigned long zones_size[MAX_NR_ZONES]; - unsigned long dma_pfn, high_pfn; unsigned long ro_start_pfn, ro_end_pfn; + unsigned long max_zone_pfns[MAX_NR_ZONES]; - memset(zones_size, 0, sizeof(zones_size)); - dma_pfn = MAX_DMA_ADDRESS >> PAGE_SHIFT; - high_pfn = max_low_pfn; ro_start_pfn = PFN_DOWN((unsigned long)&__start_rodata); ro_end_pfn = PFN_UP((unsigned long)&__end_rodata); - if (dma_pfn > high_pfn) - zones_size[ZONE_DMA] = high_pfn; - else { - zones_size[ZONE_DMA] = dma_pfn; - zones_size[ZONE_NORMAL] = high_pfn - dma_pfn; - } - - /* Initialize mem_map[]. */ - free_area_init_node(0, &contig_page_data, zones_size, - __pa(PAGE_OFFSET) >> PAGE_SHIFT, zholes_size); + memset(max_zone_pfns, 0, sizeof(max_zone_pfns)); + max_zone_pfns[ZONE_DMA] = PFN_DOWN(MAX_DMA_ADDRESS); + max_zone_pfns[ZONE_NORMAL] = max_low_pfn; + free_area_init_nodes(max_zone_pfns); /* * map whole physical memory to virtual memory (identity mapping) @@ -237,8 +224,6 @@ void __init paging_init(void) __raw_local_irq_ssm(ssm_mask); local_flush_tlb(); - - return; } #endif /* CONFIG_64BIT */