| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| 549 | 89.85% | 10 | 55.56% | |
| 23 | 3.76% | 1 | 5.56% | |
| 20 | 3.27% | 1 | 5.56% | |
| 9 | 1.47% | 1 | 5.56% | |
| 5 | 0.82% | 2 | 11.11% | |
| 2 | 0.33% | 1 | 5.56% | |
| 2 | 0.33% | 1 | 5.56% | |
| 1 | 0.16% | 1 | 5.56% | |
| Total | 611 | 18 |
| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Vineet Gupta | 549 | 89.85% | 10 | 55.56% |
| Noam Camus | 23 | 3.76% | 1 | 5.56% |
| Florian Fainelli | 20 | 3.27% | 1 | 5.56% |
| Alexey Brodkin | 9 | 1.47% | 1 | 5.56% |
| Eugeniy Paltsev | 5 | 0.82% | 2 | 11.11% |
| Thomas Gleixner | 2 | 0.33% | 1 | 5.56% |
| Jiang Liu | 2 | 0.33% | 1 | 5.56% |
| Mike Rapoport | 1 | 0.16% | 1 | 5.56% |
| Total | 611 | 18 |
// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com) */ #include <linux/kernel.h> #include <linux/mm.h> #include <linux/memblock.h> #ifdef CONFIG_BLK_DEV_INITRD #include <linux/initrd.h> #endif #include <linux/of_fdt.h> #include <linux/swap.h> #include <linux/module.h> #include <linux/highmem.h> #include <asm/page.h> #include <asm/pgalloc.h> #include <asm/sections.h> #include <asm/arcregs.h> pgd_t swapper_pg_dir[PTRS_PER_PGD] __aligned(PAGE_SIZE); char empty_zero_page[PAGE_SIZE] __aligned(PAGE_SIZE); EXPORT_SYMBOL(empty_zero_page); static const unsigned long low_mem_start = CONFIG_LINUX_RAM_BASE; static unsigned long low_mem_sz; #ifdef CONFIG_HIGHMEM static unsigned long min_high_pfn, max_high_pfn; static u64 high_mem_start; static u64 high_mem_sz; #endif #ifdef CONFIG_DISCONTIGMEM struct pglist_data node_data[MAX_NUMNODES] __read_mostly; EXPORT_SYMBOL(node_data); #endif long __init arc_get_mem_sz(void) { return low_mem_sz; } /* User can over-ride above with "mem=nnn[KkMm]" in cmdline */ static int __init setup_mem_sz(char *str) { low_mem_sz = memparse(str, NULL) & PAGE_MASK; /* early console might not be setup yet - it will show up later */ pr_info("\"mem=%s\": mem sz set to %ldM\n", str, TO_MB(low_mem_sz)); return 0; } early_param("mem", setup_mem_sz); void __init early_init_dt_add_memory_arch(u64 base, u64 size) { int in_use = 0; if (!low_mem_sz) { if (base != low_mem_start) panic("CONFIG_LINUX_RAM_BASE != DT memory { }"); low_mem_sz = size; in_use = 1; } else { #ifdef CONFIG_HIGHMEM high_mem_start = base; high_mem_sz = size; in_use = 1; #endif } pr_info("Memory @ %llx [%lldM] %s\n", base, TO_MB(size), !in_use ? "Not used":""); } /* * First memory setup routine called from setup_arch() * 1. setup swapper's mm @init_mm * 2. Count the pages we have and setup bootmem allocator * 3. zone setup */ void __init setup_arch_memory(void) { unsigned long zones_size[MAX_NR_ZONES]; unsigned long zones_holes[MAX_NR_ZONES]; init_mm.start_code = (unsigned long)_text; init_mm.end_code = (unsigned long)_etext; init_mm.end_data = (unsigned long)_edata; init_mm.brk = (unsigned long)_end; /* first page of system - kernel .vector starts here */ min_low_pfn = ARCH_PFN_OFFSET; /* Last usable page of low mem */ max_low_pfn = max_pfn = PFN_DOWN(low_mem_start + low_mem_sz); #ifdef CONFIG_FLATMEM /* pfn_valid() uses this */ max_mapnr = max_low_pfn - min_low_pfn; #endif /*------------- bootmem allocator setup -----------------------*/ /* * seed the bootmem allocator after any DT memory node parsing or * "mem=xxx" cmdline overrides have potentially updated @arc_mem_sz * * Only low mem is added, otherwise we have crashes when allocating * mem_map[] itself. NO_BOOTMEM allocates mem_map[] at the end of * avail memory, ending in highmem with a > 32-bit address. However * it then tries to memset it with a truncaed 32-bit handle, causing * the crash */ memblock_add_node(low_mem_start, low_mem_sz, 0); memblock_reserve(CONFIG_LINUX_LINK_BASE, __pa(_end) - CONFIG_LINUX_LINK_BASE); #ifdef CONFIG_BLK_DEV_INITRD if (phys_initrd_size) { memblock_reserve(phys_initrd_start, phys_initrd_size); initrd_start = (unsigned long)__va(phys_initrd_start); initrd_end = initrd_start + phys_initrd_size; } #endif early_init_fdt_reserve_self(); early_init_fdt_scan_reserved_mem(); memblock_dump_all(); /*----------------- node/zones setup --------------------------*/ memset(zones_size, 0, sizeof(zones_size)); memset(zones_holes, 0, sizeof(zones_holes)); zones_size[ZONE_NORMAL] = max_low_pfn - min_low_pfn; zones_holes[ZONE_NORMAL] = 0; /* * We can't use the helper free_area_init(zones[]) because it uses * PAGE_OFFSET to compute the @min_low_pfn which would be wrong * when our kernel doesn't start at PAGE_OFFSET, i.e. * PAGE_OFFSET != CONFIG_LINUX_RAM_BASE */ free_area_init_node(0, /* node-id */ zones_size, /* num pages per zone */ min_low_pfn, /* first pfn of node */ zones_holes); /* holes */ #ifdef CONFIG_HIGHMEM /* * Populate a new node with highmem * * On ARC (w/o PAE) HIGHMEM addresses are actually smaller (0 based) * than addresses in normal ala low memory (0x8000_0000 based). * Even with PAE, the huge peripheral space hole would waste a lot of * mem with single mem_map[]. This warrants a mem_map per region design. * Thus HIGHMEM on ARC is imlemented with DISCONTIGMEM. * * DISCONTIGMEM in turns requires multiple nodes. node 0 above is * populated with normal memory zone while node 1 only has highmem */ node_set_online(1); min_high_pfn = PFN_DOWN(high_mem_start); max_high_pfn = PFN_DOWN(high_mem_start + high_mem_sz); zones_size[ZONE_NORMAL] = 0; zones_holes[ZONE_NORMAL] = 0; zones_size[ZONE_HIGHMEM] = max_high_pfn - min_high_pfn; zones_holes[ZONE_HIGHMEM] = 0; free_area_init_node(1, /* node-id */ zones_size, /* num pages per zone */ min_high_pfn, /* first pfn of node */ zones_holes); /* holes */ high_memory = (void *)(min_high_pfn << PAGE_SHIFT); kmap_init(); #endif } /* * mem_init - initializes memory * * Frees up bootmem * Calculates and displays memory available/used */ void __init mem_init(void) { #ifdef CONFIG_HIGHMEM unsigned long tmp; reset_all_zones_managed_pages(); for (tmp = min_high_pfn; tmp < max_high_pfn; tmp++) free_highmem_page(pfn_to_page(tmp)); #endif memblock_free_all(); mem_init_print_info(NULL); }