cregit-Linux how code gets into the kernel

Release 4.7 arch/x86/mm/init_64.c

Directory: arch/x86/mm
/*
 *  linux/arch/x86_64/mm/init.c
 *
 *  Copyright (C) 1995  Linus Torvalds
 *  Copyright (C) 2000  Pavel Machek <pavel@ucw.cz>
 *  Copyright (C) 2002,2003 Andi Kleen <ak@suse.de>
 */

#include <linux/signal.h>
#include <linux/sched.h>
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/string.h>
#include <linux/types.h>
#include <linux/ptrace.h>
#include <linux/mman.h>
#include <linux/mm.h>
#include <linux/swap.h>
#include <linux/smp.h>
#include <linux/init.h>
#include <linux/initrd.h>
#include <linux/pagemap.h>
#include <linux/bootmem.h>
#include <linux/memblock.h>
#include <linux/proc_fs.h>
#include <linux/pci.h>
#include <linux/pfn.h>
#include <linux/poison.h>
#include <linux/dma-mapping.h>
#include <linux/module.h>
#include <linux/memory.h>
#include <linux/memory_hotplug.h>
#include <linux/memremap.h>
#include <linux/nmi.h>
#include <linux/gfp.h>
#include <linux/kcore.h>

#include <asm/processor.h>
#include <asm/bios_ebda.h>
#include <asm/uaccess.h>
#include <asm/pgtable.h>
#include <asm/pgalloc.h>
#include <asm/dma.h>
#include <asm/fixmap.h>
#include <asm/e820.h>
#include <asm/apic.h>
#include <asm/tlb.h>
#include <asm/mmu_context.h>
#include <asm/proto.h>
#include <asm/smp.h>
#include <asm/sections.h>
#include <asm/kdebug.h>
#include <asm/numa.h>
#include <asm/cacheflush.h>
#include <asm/init.h>
#include <asm/uv/uv.h>
#include <asm/setup.h>

#include "mm_internal.h"

#include "ident_map.c"

/*
 * NOTE: pagetable_init alloc all the fixmap pagetables contiguous on the
 * physical space so we can cache the place of the first one and move
 * around without checking the pgd every time.
 */


pteval_t __supported_pte_mask __read_mostly = ~0;

EXPORT_SYMBOL_GPL(__supported_pte_mask);


int force_personality32;

/*
 * noexec32=on|off
 * Control non executable heap for 32bit processes.
 * To control the stack too use noexec=off
 *
 * on   PROT_READ does not imply PROT_EXEC for 32-bit processes (default)
 * off  PROT_READ implies PROT_EXEC
 */

static int __init nonx32_setup(char *str) { if (!strcmp(str, "on")) force_personality32 &= ~READ_IMPLIES_EXEC; else if (!strcmp(str, "off")) force_personality32 |= READ_IMPLIES_EXEC; return 1; }

Contributors

PersonTokensPropCommitsCommitProp
yinghai luyinghai lu44100.00%1100.00%
Total44100.00%1100.00%

__setup("noexec32=", nonx32_setup); /* * When memory was added/removed make sure all the processes MM have * suitable PGD entries in the local PGD level page. */
void sync_global_pgds(unsigned long start, unsigned long end, int removed) { unsigned long address; for (address = start; address <= end; address += PGDIR_SIZE) { const pgd_t *pgd_ref = pgd_offset_k(address); struct page *page; /* * When it is called after memory hot remove, pgd_none() * returns true. In this case (removed == 1), we must clear * the PGD entries in the local PGD level page. */ if (pgd_none(*pgd_ref) && !removed) continue; spin_lock(&pgd_lock); list_for_each_entry(page, &pgd_list, lru) { pgd_t *pgd; spinlock_t *pgt_lock; pgd = (pgd_t *)page_address(page) + pgd_index(address); /* the pgt_lock only for Xen */ pgt_lock = &pgd_page_get_mm(page)->page_table_lock; spin_lock(pgt_lock); if (!pgd_none(*pgd_ref) && !pgd_none(*pgd)) BUG_ON(pgd_page_vaddr(*pgd) != pgd_page_vaddr(*pgd_ref)); if (removed) { if (pgd_none(*pgd_ref) && !pgd_none(*pgd)) pgd_clear(pgd); } else { if (pgd_none(*pgd)) set_pgd(pgd, *pgd_ref); } spin_unlock(pgt_lock); } spin_unlock(&pgd_lock); } }

Contributors

PersonTokensPropCommitsCommitProp
haicheng lihaicheng li11756.52%120.00%
yasuaki ishimatsuyasuaki ishimatsu5928.50%120.00%
jeremy fitzhardingejeremy fitzhardinge2411.59%120.00%
linus torvaldslinus torvalds41.93%120.00%
andrea arcangeliandrea arcangeli31.45%120.00%
Total207100.00%5100.00%

/* * NOTE: This function is marked __ref because it calls __init function * (alloc_bootmem_pages). It's safe to do it ONLY when after_bootmem == 0. */
static __ref void *spp_getpage(void) { void *ptr; if (after_bootmem) ptr = (void *) get_zeroed_page(GFP_ATOMIC | __GFP_NOTRACK); else ptr = alloc_bootmem_pages(PAGE_SIZE); if (!ptr || ((unsigned long)ptr & ~PAGE_MASK)) { panic("set_pte_phys: cannot allocate page data %s\n", after_bootmem ? "after bootmem" : ""); } pr_debug("spp_getpage %p\n", ptr); return ptr; }

Contributors

PersonTokensPropCommitsCommitProp
andi kleenandi kleen7191.03%228.57%
thomas gleixnerthomas gleixner22.56%114.29%
vegard nossumvegard nossum22.56%114.29%
ingo molnaringo molnar11.28%114.29%
andrew mortonandrew morton11.28%114.29%
marcin slusarzmarcin slusarz11.28%114.29%
Total78100.00%7100.00%


static pud_t *fill_pud(pgd_t *pgd, unsigned long vaddr) { if (pgd_none(*pgd)) { pud_t *pud = (pud_t *)spp_getpage(); pgd_populate(&init_mm, pgd, pud); if (pud != pud_offset(pgd, 0)) printk(KERN_ERR "PAGETABLE BUG #00! %p <-> %p\n", pud, pud_offset(pgd, 0)); } return pud_offset(pgd, vaddr); }

Contributors

PersonTokensPropCommitsCommitProp
tejun heotejun heo6885.00%125.00%
andi kleenandi kleen911.25%250.00%
eduardo habkosteduardo habkost33.75%125.00%
Total80100.00%4100.00%


static pmd_t *fill_pmd(pud_t *pud, unsigned long vaddr) { if (pud_none(*pud)) { pmd_t *pmd = (pmd_t *) spp_getpage(); pud_populate(&init_mm, pud, pmd); if (pmd != pmd_offset(pud, 0)) printk(KERN_ERR "PAGETABLE BUG #01! %p <-> %p\n", pmd, pmd_offset(pud, 0)); } return pmd_offset(pud, vaddr); }

Contributors

PersonTokensPropCommitsCommitProp
andi kleenandi kleen5973.75%350.00%
tejun heotejun heo1620.00%116.67%
jeremy fitzhardingejeremy fitzhardinge45.00%116.67%
ingo molnaringo molnar11.25%116.67%
Total80100.00%6100.00%


static pte_t *fill_pte(pmd_t *pmd, unsigned long vaddr) { if (pmd_none(*pmd)) { pte_t *pte = (pte_t *) spp_getpage(); pmd_populate_kernel(&init_mm, pmd, pte); if (pte != pte_offset_kernel(pmd, 0)) printk(KERN_ERR "PAGETABLE BUG #02!\n"); } return pte_offset_kernel(pmd, vaddr); }

Contributors

PersonTokensPropCommitsCommitProp
andi kleenandi kleen4056.34%240.00%
tejun heotejun heo2636.62%120.00%
jeremy fitzhardingejeremy fitzhardinge45.63%120.00%
ingo molnaringo molnar11.41%120.00%
Total71100.00%5100.00%


void set_pte_vaddr_pud(pud_t *pud_page, unsigned long vaddr, pte_t new_pte) { pud_t *pud; pmd_t *pmd; pte_t *pte; pud = pud_page + pud_index(vaddr); pmd = fill_pmd(pud, vaddr); pte = fill_pte(pmd, vaddr); set_pte(pte, new_pte); /* * It's enough to flush this one mapping. * (PGE mappings get flushed as well) */ __flush_tlb_one(vaddr); }

Contributors

PersonTokensPropCommitsCommitProp
tejun heotejun heo4464.71%133.33%
andi kleenandi kleen2435.29%266.67%
Total68100.00%3100.00%


void set_pte_vaddr(unsigned long vaddr, pte_t pteval) { pgd_t *pgd; pud_t *pud_page; pr_debug("set_pte_vaddr %lx to %lx\n", vaddr, native_pte_val(pteval)); pgd = pgd_offset_k(vaddr); if (pgd_none(*pgd)) { printk(KERN_ERR "PGD FIXMAP MISSING, it should be setup in head.S!\n"); return; } pud_page = (pud_t*)pgd_page_vaddr(*pgd); set_pte_vaddr_pud(pud_page, vaddr, pteval); }

Contributors

PersonTokensPropCommitsCommitProp
eduardo habkosteduardo habkost7698.70%150.00%
tejun heotejun heo11.30%150.00%
Total77100.00%2100.00%


pmd_t * __init populate_extra_pmd(unsigned long vaddr) { pgd_t *pgd; pud_t *pud; pgd = pgd_offset_k(vaddr); pud = fill_pud(pgd, vaddr); return fill_pmd(pud, vaddr); }

Contributors

PersonTokensPropCommitsCommitProp
tejun heotejun heo2660.47%266.67%
jack steinerjack steiner1739.53%133.33%
Total43100.00%3100.00%


pte_t * __init populate_extra_pte(unsigned long vaddr) { pmd_t *pmd; pmd = populate_extra_pmd(vaddr); return fill_pte(pmd, vaddr); }

Contributors

PersonTokensPropCommitsCommitProp
tejun heotejun heo30100.00%2100.00%
Total30100.00%2100.00%

/* * Create large page table mappings for a range of physical addresses. */
static void __init __init_extra_mapping(unsigned long phys, unsigned long size, enum page_cache_mode cache) { pgd_t *pgd; pud_t *pud; pmd_t *pmd; pgprot_t prot; pgprot_val(prot) = pgprot_val(PAGE_KERNEL_LARGE) | pgprot_val(pgprot_4k_2_large(cachemode2pgprot(cache))); BUG_ON((phys & ~PMD_MASK) || (size & ~PMD_MASK)); for (; size; phys += PMD_SIZE, size -= PMD_SIZE) { pgd = pgd_offset_k((unsigned long)__va(phys)); if (pgd_none(*pgd)) { pud = (pud_t *) spp_getpage(); set_pgd(pgd, __pgd(__pa(pud) | _KERNPG_TABLE | _PAGE_USER)); } pud = pud_offset(pgd, (unsigned long)__va(phys)); if (pud_none(*pud)) { pmd = (pmd_t *) spp_getpage(); set_pud(pud, __pud(__pa(pmd) | _KERNPG_TABLE | _PAGE_USER)); } pmd = pmd_offset(pud, phys); BUG_ON(!pmd_none(*pmd)); set_pmd(pmd, __pmd(phys | pgprot_val(prot))); } }

Contributors

PersonTokensPropCommitsCommitProp
jack steinerjack steiner19687.89%150.00%
juergen grossjuergen gross2712.11%150.00%
Total223100.00%2100.00%


void __init init_extra_mapping_wb(unsigned long phys, unsigned long size) { __init_extra_mapping(phys, size, _PAGE_CACHE_MODE_WB); }

Contributors

PersonTokensPropCommitsCommitProp
jack steinerjack steiner2295.65%150.00%
juergen grossjuergen gross14.35%150.00%
Total23100.00%2100.00%


void __init init_extra_mapping_uc(unsigned long phys, unsigned long size) { __init_extra_mapping(phys, size, _PAGE_CACHE_MODE_UC); }

Contributors

PersonTokensPropCommitsCommitProp
jack steinerjack steiner2295.65%150.00%
juergen grossjuergen gross14.35%150.00%
Total23100.00%2100.00%

/* * The head.S code sets up the kernel high mapping: * * from __START_KERNEL_map to __START_KERNEL_map + size (== _end-_text) * * phys_base holds the negative offset to the kernel, which is added * to the compile time generated pmds. This results in invalid pmds up * to the point where we hit the physaddr 0 mapping. * * We limit the mappings to the region from _text to _brk_end. _brk_end * is rounded up to the 2MB boundary. This catches the invalid pmds as * well, as they are located before _text: */
void __init cleanup_highmap(void) { unsigned long vaddr = __START_KERNEL_map; unsigned long vaddr_end = __START_KERNEL_map + KERNEL_IMAGE_SIZE; unsigned long end = roundup((unsigned long)_brk_end, PMD_SIZE) - 1; pmd_t *pmd = level2_kernel_pgt; /* * Native path, max_pfn_mapped is not set yet. * Xen has valid max_pfn_mapped set in * arch/x86/xen/mmu.c:xen_setup_kernel_pagetable(). */ if (max_pfn_mapped) vaddr_end = __START_KERNEL_map + (max_pfn_mapped << PAGE_SHIFT); for (; vaddr + PMD_SIZE - 1 < vaddr_end; pmd++, vaddr += PMD_SIZE) { if (pmd_none(*pmd)) continue; if (vaddr < (unsigned long) _text || vaddr > end) set_pmd(pmd, __pmd(0)); } }

Contributors

PersonTokensPropCommitsCommitProp
thomas gleixnerthomas gleixner8171.68%120.00%
yinghai luyinghai lu3026.55%240.00%
hugh dickinshugh dickins10.88%120.00%
joerg roedeljoerg roedel10.88%120.00%
Total113100.00%5100.00%


static unsigned long __meminit phys_pte_init(pte_t *pte_page, unsigned long addr, unsigned long end, pgprot_t prot) { unsigned long pages = 0, next; unsigned long last_map_addr = end; int i; pte_t *pte = pte_page + pte_index(addr); for (i = pte_index(addr); i < PTRS_PER_PTE; i++, addr = next, pte++) { next = (addr & PAGE_MASK) + PAGE_SIZE; if (addr >= end) { if (!after_bootmem && !e820_any_mapped(addr & PAGE_MASK, next, E820_RAM) && !e820_any_mapped(addr & PAGE_MASK, next, E820_RESERVED_KERN)) set_pte(pte, __pte(0)); continue; } /* * We will re-use the existing mapping. * Xen for example has some special requirements, like mapping * pagetable pages as RO. So assume someone who pre-setup * these mappings are more intelligent. */ if (pte_val(*pte)) { if (!after_bootmem) pages++; continue; } if (0) printk(" pte=%p addr=%lx pte=%016lx\n", pte, addr, pfn_pte(addr >> PAGE_SHIFT, PAGE_KERNEL).pte); pages++; set_pte(pte, pfn_pte(addr >> PAGE_SHIFT, prot)); last_map_addr = (addr & PAGE_MASK) + PAGE_SIZE; } update_page_count(PG_LEVEL_4K, pages); return last_map_addr; }

Contributors

PersonTokensPropCommitsCommitProp
jeremy fitzhardingejeremy fitzhardinge13562.79%112.50%
yinghai luyinghai lu6630.70%337.50%
suresh siddhasuresh siddha83.72%225.00%
jan beulichjan beulich52.33%112.50%
andi kleenandi kleen10.47%112.50%
Total215100.00%8100.00%


static unsigned long __meminit phys_pmd_init(pmd_t *pmd_page, unsigned long address, unsigned long end, unsigned long page_size_mask, pgprot_t prot) { unsigned long pages = 0, next; unsigned long last_map_addr = end; int i = pmd_index(address); for (; i < PTRS_PER_PMD; i++, address = next) { pmd_t *pmd = pmd_page + pmd_index(address); pte_t *pte; pgprot_t new_prot = prot; next = (address & PMD_MASK) + PMD_SIZE; if (address >= end) { if (!after_bootmem && !e820_any_mapped(address & PMD_MASK, next, E820_RAM) && !e820_any_mapped(address & PMD_MASK, next, E820_RESERVED_KERN)) set_pmd(pmd, __pmd(0)); continue; } if (pmd_val(*pmd)) { if (!pmd_large(*pmd)) { spin_lock(&init_mm.page_table_lock); pte = (pte_t *)pmd_page_vaddr(*pmd); last_map_addr = phys_pte_init(pte, address, end, prot); spin_unlock(&init_mm.page_table_lock); continue; } /* * If we are ok with PG_LEVEL_2M mapping, then we will * use the existing mapping, * * Otherwise, we will split the large page mapping but * use the same existing protection bits except for * large page, so that we don't violate Intel's TLB * Application note (317080) which says, while changing * the page sizes, new and old translations should * not differ with respect to page frame and * attributes. */ if (page_size_mask & (1 << PG_LEVEL_2M)) { if (!after_bootmem) pages++; last_map_addr = next; continue; } new_prot = pte_pgprot(pte_clrhuge(*(pte_t *)pmd)); } if (page_size_mask & (1<<PG_LEVEL_2M)) { pages++; spin_lock(&init_mm.page_table_lock); set_pte((pte_t *)pmd, pfn_pte((address & PMD_MASK) >> PAGE_SHIFT, __pgprot(pgprot_val(prot) | _PAGE_PSE))); spin_unlock(&init_mm.page_table_lock); last_map_addr = next; continue; } pte = alloc_low_page(); last_map_addr = phys_pte_init(pte, address, end, new_prot); spin_lock(&init_mm.page_table_lock); pmd_populate_kernel(&init_mm, pmd, pte); spin_unlock(&init_mm.page_table_lock); } update_page_count(PG_LEVEL_2M, pages); return last_map_addr; }

Contributors

PersonTokensPropCommitsCommitProp
yinghai luyinghai lu8523.16%729.17%
andi kleenandi kleen7620.71%625.00%
jan beulichjan beulich7219.62%416.67%
jeremy fitzhardingejeremy fitzhardinge5214.17%28.33%
suresh siddhasuresh siddha4411.99%14.17%
keith manntheykeith mannthey277.36%14.17%
matt tolentinomatt tolentino71.91%14.17%
hugh dickinshugh dickins30.82%14.17%
thomas gleixnerthomas gleixner10.27%14.17%
Total367100.00%24100.00%


static unsigned long __meminit phys_pud_init(pud_t *pud_page, unsigned long addr, unsigned long end, unsigned long page_size_mask) { unsigned long pages = 0, next; unsigned long last_map_addr = end; int i = pud_index(addr); for (; i < PTRS_PER_PUD; i++, addr = next) { pud_t *pud = pud_page + pud_index(addr); pmd_t *pmd; pgprot_t prot = PAGE_KERNEL; next = (addr & PUD_MASK) + PUD_SIZE; if (addr >= end) { if (!after_bootmem && !e820_any_mapped(addr & PUD_MASK, next, E820_RAM) && !e820_any_mapped(addr & PUD_MASK, next, E820_RESERVED_KERN)) set_pud(pud, __pud(0)); continue; } if (pud_val(*pud)) { if (!pud_large(*pud)) { pmd = pmd_offset(pud, 0); last_map_addr = phys_pmd_init(pmd, addr, end, page_size_mask, prot); __flush_tlb_all(); continue; } /* * If we are ok with PG_LEVEL_1G mapping, then we will * use the existing mapping. * * Otherwise, we will split the gbpage mapping but use * the same existing protection bits except for large * page, so that we don't violate Intel's TLB * Application note (317080) which says, while changing * the page sizes, new and old translations should * not differ with respect to page frame and * attributes. */ if (page_size_mask & (1 << PG_LEVEL_1G)) { if (!after_bootmem) pages++; last_map_addr = next; continue; } prot = pte_pgprot(pte_clrhuge(*(pte_t *)pud)); } if (page_size_mask & (1<<PG_LEVEL_1G)) { pages++; spin_lock(&init_mm.page_table_lock); set_pte((pte_t *)pud, pfn_pte((addr & PUD_MASK) >> PAGE_SHIFT, PAGE_KERNEL_LARGE)); spin_unlock(&init_mm.page_table_lock); last_map_addr = next; continue; } pmd = alloc_low_page(); last_map_addr = phys_pmd_init(pmd, addr, end, page_size_mask, prot); spin_lock(&init_mm.page_table_lock); pud_populate(&init_mm, pud, pmd); spin_unlock(&init_mm.page_table_lock); } __flush_tlb_all(); update_page_count(PG_LEVEL_1G, pages); return last_map_addr; }

Contributors

PersonTokensPropCommitsCommitProp
matt tolentinomatt tolentino7922.77%14.76%
andi kleenandi kleen6619.02%523.81%
yinghai luyinghai lu6017.29%628.57%
jan beulichjan beulich5014.41%314.29%
suresh siddhasuresh siddha3810.95%29.52%
keith manntheykeith mannthey3810.95%14.76%
jeremy fitzhardingejeremy fitzhardinge154.32%29.52%
arjan van de venarjan van de ven10.29%14.76%
Total347100.00%21100.00%


unsigned long __meminit kernel_physical_mapping_init(unsigned long start, unsigned long end, unsigned long page_size_mask) { bool pgd_changed = false; unsigned long next, last_map_addr = end; unsigned long addr; start = (unsigned long)__va(start); end = (unsigned long)__va(end); addr = start; for (; start < end; start = next) { pgd_t *pgd = pgd_offset_k(start); pud_t *pud; next = (start & PGDIR_MASK) + PGDIR_SIZE; if (pgd_val(*pgd)) { pud = (pud_t *)pgd_page_vaddr(*pgd); last_map_addr = phys_pud_init(pud, __pa(start), __pa(end), page_size_mask); continue; } pud = alloc_low_page(); last_map_addr = phys_pud_init(pud, __pa(start), __pa(end), page_size_mask); spin_lock(&init_mm.page_table_lock); pgd_populate(&init_mm, pgd, pud); spin_unlock(&init_mm.page_table_lock); pgd_changed = true; } if (pgd_changed) sync_global_pgds(addr, end - 1, 0); __flush_tlb_all(); return last_map_addr; }

Contributors

PersonTokensPropCommitsCommitProp
pekka j enbergpekka j enberg5525.58%13.85%
andi kleenandi kleen4018.60%830.77%
yinghai luyinghai lu4018.60%726.92%
haicheng lihaicheng li2411.16%13.85%
jeremy fitzhardingejeremy fitzhardinge219.77%27.69%
matt tolentinomatt tolentino167.44%13.85%
jan beulichjan beulich83.72%13.85%
fengguang wufengguang wu41.86%13.85%
yasuaki ishimatsuyasuaki ishimatsu20.93%13.85%
wen congyangwen congyang20.93%13.85%
suresh siddhasuresh siddha20.93%13.85%
li shaohuali shaohua10.47%13.85%
Total215100.00%26100.00%

#ifndef CONFIG_NUMA
void __init initmem_init(void) { memblock_set_node(0, (phys_addr_t)ULLONG_MAX, &memblock.memory, 0); }

Contributors

PersonTokensPropCommitsCommitProp
yinghai luyinghai lu1352.00%125.00%
tejun heotejun heo728.00%250.00%
tang chentang chen520.00%125.00%
Total25100.00%4100.00%

#endif
void __init paging_init(void) { sparse_memory_present_with_active_regions(MAX_NUMNODES); sparse_init(); /* * clear the default setting with node 0 * note: don't use nodes_clear here, that is really clearing when * numa support is not compiled in, and later node_set_state * will not set it back. */ node_clear_state(0, N_MEMORY); if (N_MEMORY != N_NORMAL_MEMORY) node_clear_state(0, N_NORMAL_MEMORY); zone_sizes_init(); }

Contributors

PersonTokensPropCommitsCommitProp
lai jiangshanlai jiangshan1332.50%112.50%
andi kleenandi kleen922.50%225.00%
yinghai luyinghai lu820.00%225.00%
pekka j enbergpekka j enberg717.50%225.00%
matt tolentinomatt tolentino37.50%112.50%
Total40100.00%8100.00%

/* * Memory hotplug specific functions */ #ifdef CONFIG_MEMORY_HOTPLUG /* * After memory hotplug the variables max_pfn, max_low_pfn and high_memory need * updating. */
static void update_end_of_memory_vars(u64 start, u64 size) { unsigned long end_pfn = PFN_UP(start + size); if (end_pfn > max_pfn) { max_pfn = end_pfn; max_low_pfn = end_pfn; high_memory = (void *)__va(max_pfn * PAGE_SIZE - 1) + 1; } }

Contributors

PersonTokensPropCommitsCommitProp
shaohui zhengshaohui zheng56100.00%1100.00%
Total56100.00%1100.00%

/* * Memory is added always to NORMAL zone. This means you will never get * additional DMA/DMA32 memory. */
int arch_add_memory(int nid, u64 start, u64 size, bool for_device) { struct pglist_data *pgdat = NODE_DATA(nid); struct zone *zone = pgdat->node_zones + zone_for_memory(nid, start, size, ZONE_NORMAL, for_device); unsigned long start_pfn = start >> PAGE_SHIFT; unsigned long nr_pages = size >> PAGE_SHIFT; int ret; init_memory_mapping(start, start + size); ret = __add_pages(nid, zone, start_pfn, nr_pages); WARN_ON_ONCE(ret); /* update max_pfn, max_low_pfn and high_memory */ update_end_of_memory_vars(start, size); return ret; }

Contributors

PersonTokensPropCommitsCommitProp
matt tolentinomatt tolentino6561.32%111.11%
wang nanwang nan98.49%111.11%
keith manntheykeith mannthey98.49%111.11%
shaohui zhengshaohui zheng87.55%111.11%
yasunori gotoyasunori goto54.72%111.11%
dan williamsdan williams54.72%111.11%
gary hadegary hade43.77%222.22%
christoph lameterchristoph lameter10.94%111.11%
Total106100.00%9100.00%

EXPORT_SYMBOL_GPL(arch_add_memory); #define PAGE_INUSE 0xFD
static void __meminit free_pagetable(struct page *page, int order) { unsigned long magic; unsigned int nr_pages = 1 << order; struct vmem_altmap *altmap = to_vmem_altmap((unsigned long) page); if (altmap) { vmem_altmap_free(altmap, nr_pages); return; } /* bootmem page has reserved flag */ if (PageReserved(page)) { __ClearPageReserved(page); magic = (unsigned long)page->lru.next; if (magic == SECTION_INFO || magic == MIX_SECTION_INFO) { while (nr_pages--) put_page_bootmem(page++); } else while (nr_pages--) free_reserved_page(page++); } else free_pages((unsigned long)page_address(page), order); }

Contributors

PersonTokensPropCommitsCommitProp
wen congyangwen congyang9773.48%133.33%
dan williamsdan williams2821.21%133.33%
jiang liujiang liu75.30%133.33%
Total132100.00%3100.00%


static void __meminit free_pte_table(pte_t *pte_start, pmd_t *pmd) { pte_t *pte; int i; for (i = 0; i < PTRS_PER_PTE; i++) { pte = pte_start + i; if (pte_val(*pte)) return; } /* free a pte talbe */ free_pagetable(pmd_page(*pmd), 0); spin_lock(&init_mm.page_table_lock); pmd_clear(pmd); spin_unlock(&init_mm.page_table_lock); }

Contributors

PersonTokensPropCommitsCommitProp
wen congyangwen congyang85100.00%1100.00%
Total85100.00%1100.00%


static void __meminit free_pmd_table(pmd_t *pmd_start, pud_t *pud) { pmd_t *pmd; int i; for (i = 0; i < PTRS_PER_PMD; i++) { pmd = pmd_start + i; if (pmd_val(*pmd)) return; } /* free a pmd talbe */ free_pagetable(pud_page(*pud), 0); spin_lock(&init_mm.page_table_lock); pud_clear(pud); spin_unlock(&init_mm.page_table_lock); }

Contributors

PersonTokensPropCommitsCommitProp
wen congyangwen congyang85100.00%1100.00%
Total85100.00%1100.00%

/* Return true if pgd is changed, otherwise return false. */
static bool __meminit free_pud_table(pud_t *pud_start, pgd_t *pgd) { pud_t *pud; int i; for (i = 0; i < PTRS_PER_PUD; i++) { pud = pud_start + i; if (pud_val(*pud)) return false; } /* free a pud table */ free_pagetable(pgd_page(*pgd), 0); spin_lock(&init_mm.page_table_lock); pgd_clear(pgd); spin_unlock(&init_mm.page_table_lock); return true; }

Contributors

PersonTokensPropCommitsCommitProp
wen congyangwen congyang90100.00%1100.00%
Total90100.00%1100.00%


static void __meminit remove_pte_table(pte_t *pte_start, unsigned long addr, unsigned long end, bool direct) { unsigned long next, pages = 0; pte_t *pte; void *page_addr; phys_addr_t phys_addr; pte = pte_start + pte_index(addr); for (; addr < end; addr = next, pte++) { next = (addr + PAGE_SIZE) & PAGE_MASK; if (next > end) next = end; if (!pte_present(*pte)) continue; /* * We mapped [0,1G) memory as identity mapping when * initializing, in arch/x86/kernel/head_64.S. These * pagetables cannot be removed. */ phys_addr = pte_val(*pte) + (addr & PAGE_MASK); if (phys_addr < (phys_addr_t)0x40000000) return; if (PAGE_ALIGNED(addr) && PAGE_ALIGNED(next)) { /* * Do not free direct mapping pages since they were * freed when offlining, or simplely not in use. */ if (!direct) free_pagetable(pte_page(*pte), 0); spin_lock(&init_mm.page_table_lock); pte_clear(&init_mm, addr, pte); spin_unlock(&init_mm.page_table_lock); /* For non-direct mapping, pages means nothing. */ pages++; } else { /* * If we are here, we are freeing vmemmap pages since * direct mapped memory ranges to be freed are aligned. * * If we are not removing the whole page, it means * other page structs in this page are being used and * we canot remove them. So fill the unused page_structs * with 0xFD, and remove the page when it is wholly * filled with 0xFD. */ memset((void *)addr, PAGE_INUSE, next - addr); page_addr = page_address(pte_page(*pte)); if (!memchr_inv(page_addr, PAGE_INUSE, PAGE_SIZE)) { free_pagetable(pte_page(*pte), 0); spin_lock(&init_mm.page_table_lock); pte_clear(&init_mm, addr, pte); spin_unlock(&init_mm.page_table_lock); } } } /* Call free_pte_table() in remove_pmd_table(). */ flush_tlb_all(); if (direct) update_page_count(PG_LEVEL_4K, -pages); }

Contributors

PersonTokensPropCommitsCommitProp
wen congyangwen congyang27799.28%150.00%
kefeng wangkefeng wang20.72%150.00%
Total279100.00%2100.00%


static void __meminit remove_pmd_table(pmd_t *pmd_start, unsigned long addr, unsigned long end, bool direct) { unsigned long next, pages = 0; pte_t *pte_base; pmd_t *pmd; void *page_addr; pmd = pmd_start + pmd_index(addr); for (; addr < end; addr = next, pmd++) { next = pmd_addr_end(addr, end); if (!pmd_present(*pmd)) continue; if (pmd_large(*pmd)) { if (IS_ALIGNED(addr, PMD_SIZE) && IS_ALIGNED(next, PMD_SIZE)) { if (!direct) free_pagetable(pmd_page(*pmd), get_order(PMD_SIZE)); spin_lock(&init_mm.page_table_lock); pmd_clear(pmd); spin_unlock(&init_mm.page_table_lock); pages++; } else { /* If here, we are freeing vmemmap pages. */ memset((void *)addr, PAGE_INUSE, next - addr); page_addr = page_address(pmd_page(*pmd)); if (!memchr_inv(page_addr, PAGE_INUSE, PMD_SIZE)) { free_pagetable(pmd_page(*pmd), get_order(PMD_SIZE)); spin_lock(&init_mm.page_table_lock); pmd_clear(pmd); spin_unlock(&init_mm.page_table_lock); } } continue; } pte_base = (pte_t *)pmd_page_vaddr(*pmd); remove_pte_table(pte_base, addr, next, direct); free_pte_table(pte_base, pmd); } /* Call free_pmd_table() in remove_pud_table(). */ if (direct) update_page_count(PG_LEVEL_2M, -pages); }

Contributors

PersonTokensPropCommitsCommitProp
wen congyangwen congyang280100.00%1100.00%
Total280100.00%1100.00%


static void __meminit remove_pud_table(pud_t *pud_start, unsigned long addr, unsigned long end, bool direct) { unsigned long next, pages = 0; pmd_t *pmd_base; pud_t *pud; void *page_addr; pud = pud_start + pud_index(addr); for (; addr < end; addr = next, pud++) { next = pud_addr_end(addr, end); if (!pud_present(*pud)) continue; if (pud_large(*pud)) { if (IS_ALIGNED(addr, PUD_SIZE) && IS_ALIGNED(next, PUD_SIZE)) { if (!direct) free_pagetable(pud_page(*pud), get_order(PUD_SIZE)); spin_lock(&init_mm.page_table_lock); pud_clear(pud); spin_unlock(&init_mm.page_table_lock); pages++; } else { /* If here, we are freeing vmemmap pages. */ memset((void *)addr, PAGE_INUSE, next - addr); page_addr = page_address(pud_page(*pud)); if (!memchr_inv(page_addr, PAGE_INUSE, PUD_SIZE)) { free_pagetable(pud_page(*pud), get_order(PUD_SIZE)); spin_lock(&init_mm.page_table_lock); pud_clear(pud); spin_unlock(&init_mm.page_table_lock); } } continue; } pmd_base = (pmd_t *)pud_page_vaddr(*pud); remove_pmd_table(pmd_base, addr, next, direct); free_pmd_table(pmd_base, pud); } if (direct) update_page_count(PG_LEVEL_1G, -pages); }

Contributors

PersonTokensPropCommitsCommitProp
wen congyangwen congyang279100.00%1100.00%
Total279100.00%1100.00%

/* start and end are both virtual address. */
static void __meminit remove_pagetable(unsigned long start, unsigned long end, bool direct) { unsigned long next; unsigned long addr; pgd_t *pgd; pud_t *pud; bool pgd_changed = false; for (addr = start; addr < end; addr = next) { next = pgd_addr_end(addr, end); pgd = pgd_offset_k(addr); if (!pgd_present(*pgd)) continue; pud = (pud_t *)pgd_page_vaddr(*pgd); remove_pud_table(pud, addr, next, direct); if (free_pud_table(pud, pgd)) pgd_changed = true; } if (pgd_changed) sync_global_pgds(start, end - 1, 1); flush_tlb_all(); }

Contributors

PersonTokensPropCommitsCommitProp
wen congyangwen congyang12189.63%133.33%
yasuaki ishimatsuyasuaki ishimatsu1410.37%266.67%
Total135100.00%3100.00%


void __ref vmemmap_free(unsigned long start, unsigned long end) { remove_pagetable(start, end, false); }

Contributors

PersonTokensPropCommitsCommitProp
tang chentang chen2086.96%150.00%
johannes weinerjohannes weiner313.04%150.00%
Total23100.00%2100.00%

#ifdef CONFIG_MEMORY_HOTREMOVE
static void __meminit kernel_physical_mapping_remove(unsigned long start, unsigned long end) { start = (unsigned long)__va(start); end = (unsigned long)__va(end); remove_pagetable(start, end, true); }

Contributors

PersonTokensPropCommitsCommitProp
tang chentang chen46100.00%1100.00%
Total46100.00%1100.00%


int __ref arch_remove_memory(u64 start, u64 size) { unsigned long start_pfn = start >> PAGE_SHIFT; unsigned long nr_pages = size >> PAGE_SHIFT; struct page *page = pfn_to_page(start_pfn); struct vmem_altmap *altmap; struct zone *zone; int ret; /* With altmap the first mapped page is offset from @start */ altmap = to_vmem_altmap((unsigned long) page); if (altmap) page += vmem_altmap_offset(altmap); zone = page_zone(page); ret = __remove_pages(zone, start_pfn, nr_pages); WARN_ON_ONCE(ret); kernel_physical_mapping_remove(start, start + size); return ret; }

Contributors

PersonTokensPropCommitsCommitProp
wen congyangwen congyang6055.05%133.33%
dan williamsdan williams4642.20%133.33%
tang chentang chen32.75%133.33%
Total109100.00%3100.00%

#endif #endif /* CONFIG_MEMORY_HOTPLUG */ static struct kcore_list kcore_vsyscall;
static void __init register_page_bootmem_info(void) { #ifdef CONFIG_NUMA int i; for_each_online_node(i) register_page_bootmem_info_node(NODE_DATA(i)); #endif }

Contributors

PersonTokensPropCommitsCommitProp
yinghai luyinghai lu29100.00%1100.00%
Total29100.00%1100.00%


void __init mem_init(void) { pci_iommu_alloc(); /* clear_bss() already clear the empty_zero_page */ register_page_bootmem_info(); /* this will put all memory onto the freelists */ free_all_bootmem(); after_bootmem = 1; /* Register memory areas for /proc/kcore */ kclist_add(&kcore_vsyscall, (void *)VSYSCALL_ADDR, PAGE_SIZE, KCORE_OTHER); mem_init_print_info(NULL); }

Contributors

PersonTokensPropCommitsCommitProp
andi kleenandi kleen3373.33%327.27%
jiang liujiang liu36.67%218.18%
yinghai luyinghai lu24.44%218.18%
kamezawa hiroyukikamezawa hiroyuki24.44%19.09%
muli ben-yehudamuli ben-yehuda24.44%19.09%
andy lutomirskiandy lutomirski24.44%19.09%
jon masonjon mason12.22%19.09%
Total45100.00%11100.00%

const int rodata_test_data = 0xC3; EXPORT_SYMBOL_GPL(rodata_test_data); int kernel_set_to_readonly;
void set_kernel_text_rw(void) { unsigned long start = PFN_ALIGN(_text); unsigned long end = PFN_ALIGN(__stop___ex_table); if (!kernel_set_to_readonly) return; pr_debug("Set kernel text: %lx - %lx for read write\n", start, end); /* * Make the kernel identity mapping for text RW. Kernel text * mapping will always be RO. Refer to the comment in * static_protections() in pageattr.c */ set_memory_rw(start, (end - start) >> PAGE_SHIFT); }

Contributors

PersonTokensPropCommitsCommitProp
steven rostedtsteven rostedt5194.44%133.33%
suresh siddhasuresh siddha35.56%266.67%
Total54100.00%3100.00%


void set_kernel_text_ro(void) { unsigned long start = PFN_ALIGN(_text); unsigned long end = PFN_ALIGN(__stop___ex_table); if (!kernel_set_to_readonly) return; pr_debug("Set kernel text: %lx - %lx for read only\n", start, end); /* * Set the kernel identity mapping for text RO. */ set_memory_ro(start, (end - start) >> PAGE_SHIFT); }

Contributors

PersonTokensPropCommitsCommitProp
steven rostedtsteven rostedt5194.44%133.33%
suresh siddhasuresh siddha35.56%266.67%
Total54100.00%3100.00%


void mark_rodata_ro(void) { unsigned long start = PFN_ALIGN(_text); unsigned long rodata_start = PFN_ALIGN(__start_rodata); unsigned long end = (unsigned long) &__end_rodata_hpage_align; unsigned long text_end = PFN_ALIGN(&__stop___ex_table); unsigned long rodata_end = PFN_ALIGN(&__end_rodata); unsigned long all_end; printk(KERN_INFO "Write protecting the kernel read-only data: %luk\n", (end - start) >> 10); set_memory_ro(start, (end - start) >> PAGE_SHIFT); kernel_set_to_readonly = 1; /* * The rodata/data/bss/brk section (but not the kernel text!) * should also be not-executable. * * We align all_end to PMD_SIZE because the existing mapping * is a full PMD. If we would align _brk_end to PAGE_SIZE we * split the PMD and the reminder between _brk_end and the end * of the PMD will remain mapped executable. * * Any PMD which was setup after the one which covers _brk_end * has been zapped already via cleanup_highmem(). */ all_end = roundup((unsigned long)_brk_end, PMD_SIZE); set_memory_nx(text_end, (all_end - text_end) >> PAGE_SHIFT); rodata_test(); #ifdef CONFIG_CPA_DEBUG printk(KERN_INFO "Testing CPA: undo %lx-%lx\n", start, end); set_memory_rw(start, (end-start) >> PAGE_SHIFT); printk(KERN_INFO "Testing CPA: again\n"); set_memory_ro(start, (end-start) >> PAGE_SHIFT); #endif free_init_pages("unused kernel", (unsigned long) __va(__pa_symbol(text_end)), (unsigned long) __va(__pa_symbol(rodata_start))); free_init_pages("unused kernel", (unsigned long) __va(__pa_symbol(rodata_end)), (unsigned long) __va(__pa_symbol(_sdata))); debug_checkwx(); }

Contributors

PersonTokensPropCommitsCommitProp
suresh siddhasuresh siddha8034.93%210.53%
andi kleenandi kleen4318.78%15.26%
arjan van de venarjan van de ven4117.90%421.05%
kees cookkees cook146.11%15.26%
alexander duyckalexander duyck146.11%15.26%
steven rostedtsteven rostedt104.37%210.53%
linus torvaldslinus torvalds83.49%15.26%
stephen d. smalleystephen d. smalley52.18%210.53%
mathieu desnoyersmathieu desnoyers41.75%15.26%
jan beulichjan beulich41.75%15.26%
yinghai luyinghai lu20.87%15.26%
jiang liujiang liu20.87%15.26%
ingo molnaringo molnar20.87%15.26%
Total229100.00%19100.00%


int kern_addr_valid(unsigned long addr) { unsigned long above = ((long)addr) >> __VIRTUAL_MASK_SHIFT; pgd_t *pgd; pud_t *pud; pmd_t *pmd; pte_t *pte; if (above != 0 && above != -1UL) return 0; pgd = pgd_offset_k(addr); if (pgd_none(*pgd)) return 0; pud = pud_offset(pgd, addr); if (pud_none(*pud)) return 0; if (pud_large(*pud)) return pfn_valid(pud_pfn(*pud)); pmd = pmd_offset(pud, addr); if (pmd_none(*pmd)) return 0; if (pmd_large(*pmd)) return pfn_valid(pmd_pfn(*pmd)); pte = pte_offset_kernel(pmd, addr); if (pte_none(*pte)) return 0; return pfn_valid(pte_pfn(*pte)); }

Contributors

PersonTokensPropCommitsCommitProp
andi kleenandi kleen15889.77%375.00%
mel gormanmel gorman1810.23%125.00%
Total176100.00%4100.00%


static unsigned long probe_memory_block_size(void) { unsigned long bz = MIN_MEMORY_BLOCK_SIZE; /* if system is UV or has 64GB of RAM or more, use large blocks */ if (is_uv_system() || ((max_pfn << PAGE_SHIFT) >= (64UL << 30))) bz = 2UL << 30; /* 2GB */ pr_info("x86/mm: Memory block size: %ldMB\n", bz >> 20); return bz; }

Contributors

PersonTokensPropCommitsCommitProp
yinghai luyinghai lu3055.56%125.00%
seth jenningsseth jennings1527.78%125.00%
nathan fontenotnathan fontenot814.81%125.00%
daniel j bluemandaniel j blueman11.85%125.00%
Total54100.00%4100.00%

static unsigned long memory_block_size_probed;
unsigned long memory_block_size_bytes(void) { if (!memory_block_size_probed) memory_block_size_probed = probe_memory_block_size(); return memory_block_size_probed; }

Contributors

PersonTokensPropCommitsCommitProp
yinghai luyinghai lu2095.24%150.00%
nathan fontenotnathan fontenot14.76%150.00%
Total21100.00%2100.00%

#ifdef CONFIG_SPARSEMEM_VMEMMAP /* * Initialise the sparsemem vmemmap using huge-pages at the PMD level. */ static long __meminitdata addr_start, addr_end; static void __meminitdata *p_start, *p_end; static int __meminitdata node_start;
static int __meminit vmemmap_populate_hugepages(unsigned long start, unsigned long end, int node, struct vmem_altmap *altmap) { unsigned long addr; unsigned long next; pgd_t *pgd; pud_t *pud; pmd_t *pmd; for (addr = start; addr < end; addr = next) { next = pmd_addr_end(addr, end); pgd = vmemmap_pgd_populate(addr, node); if (!pgd) return -ENOMEM; pud = vmemmap_pud_populate(pgd, addr, node); if (!pud) return -ENOMEM; pmd = pmd_offset(pud, addr); if (pmd_none(*pmd)) { void *p; p = __vmemmap_alloc_block_buf(PMD_SIZE, node, altmap); if (p) { pte_t entry; entry = pfn_pte(__pa(p) >> PAGE_SHIFT, PAGE_KERNEL_LARGE); set_pmd(pmd, __pmd(pte_val(entry))); /* check to see if we have contiguous blocks */ if (p_end != p || node_start != node) { if (p_start) pr_debug(" [%lx-%lx] PMD -> [%p-%p] on node %d\n", addr_start, addr_end-1, p_start, p_end-1, node_start); addr_start = addr; node_start = node; p_start = p; } addr_end = addr + PMD_SIZE; p_end = p + PMD_SIZE; continue; } else if (altmap) return -ENOMEM; /* no fallback */ } else if (pmd_large(*pmd)) { vmemmap_verify((pte_t *)pmd, node, addr, next); continue; } pr_warn_once("vmemmap: falling back to regular page backing\n"); if (vmemmap_populate_basepages(addr, next, node)) return -ENOMEM; } return 0; }

Contributors

PersonTokensPropCommitsCommitProp
christoph lameterchristoph lameter16154.21%110.00%
johannes weinerjohannes weiner6220.88%330.00%
yinghai luyinghai lu5016.84%220.00%
dan williamsdan williams196.40%220.00%
thomas gleixnerthomas gleixner41.35%110.00%
jeremy fitzhardingejeremy fitzhardinge10.34%110.00%
Total297100.00%10100.00%


int __meminit vmemmap_populate(unsigned long start, unsigned long end, int node) { struct vmem_altmap *altmap = to_vmem_altmap(start); int err; if (boot_cpu_has(X86_FEATURE_PSE)) err = vmemmap_populate_hugepages(start, end, node, altmap); else if (altmap) { pr_err_once("%s: no cpu support for altmap allocations\n", __func__); err = -ENOMEM; } else err = vmemmap_populate_basepages(start, end, node); if (!err) sync_global_pgds(start, end - 1, 0); return err; }

Contributors

PersonTokensPropCommitsCommitProp
johannes weinerjohannes weiner5252.00%225.00%
dan williamsdan williams3131.00%112.50%
haicheng lihaicheng li66.00%112.50%
borislav petkovborislav petkov44.00%112.50%
christoph lameterchristoph lameter33.00%112.50%
yasuaki ishimatsuyasuaki ishimatsu22.00%112.50%
wen congyangwen congyang22.00%112.50%
Total100100.00%8100.00%

#if defined(CONFIG_MEMORY_HOTPLUG_SPARSE) && defined(CONFIG_HAVE_BOOTMEM_INFO_NODE)
void register_page_bootmem_memmap(unsigned long section_nr, struct page *start_page, unsigned long size) { unsigned long addr = (unsigned long)start_page; unsigned long end = (unsigned long)(start_page + size); unsigned long next; pgd_t *pgd; pud_t *pud; pmd_t *pmd; unsigned int nr_pages; struct page *page; for (; addr < end; addr = next) { pte_t *pte = NULL; pgd = pgd_offset_k(addr); if (pgd_none(*pgd)) { next = (addr + PAGE_SIZE) & PAGE_MASK; continue; } get_page_bootmem(section_nr, pgd_page(*pgd), MIX_SECTION_INFO); pud = pud_offset(pgd, addr); if (pud_none(*pud)) { next = (addr + PAGE_SIZE) & PAGE_MASK; continue; } get_page_bootmem(section_nr, pud_page(*pud), MIX_SECTION_INFO); if (!boot_cpu_has(X86_FEATURE_PSE)) { next = (addr + PAGE_SIZE) & PAGE_MASK; pmd = pmd_offset(pud, addr); if (pmd_none(*pmd)) continue; get_page_bootmem(section_nr, pmd_page(*pmd), MIX_SECTION_INFO); pte = pte_offset_kernel(pmd, addr); if (pte_none(*pte)) continue; get_page_bootmem(section_nr, pte_page(*pte), SECTION_INFO); } else { next = pmd_addr_end(addr, end); pmd = pmd_offset(pud, addr); if (pmd_none(*pmd)) continue; nr_pages = 1 << (get_order(PMD_SIZE)); page = pmd_page(*pmd); while (nr_pages--) get_page_bootmem(section_nr, page++, SECTION_INFO); } } }

Contributors

PersonTokensPropCommitsCommitProp
yasuaki ishimatsuyasuaki ishimatsu31298.73%150.00%
borislav petkovborislav petkov41.27%150.00%
Total316100.00%2100.00%

#endif
void __meminit vmemmap_populate_print_last(void) { if (p_start) { pr_debug(" [%lx-%lx] PMD -> [%p-%p] on node %d\n", addr_start, addr_end-1, p_start, p_end-1, node_start); p_start = NULL; p_end = NULL; node_start = 0; } }

Contributors

PersonTokensPropCommitsCommitProp
yinghai luyinghai lu4497.78%150.00%
dan williamsdan williams12.22%150.00%
Total45100.00%2100.00%

#endif

Overall Contributors

PersonTokensPropCommitsCommitProp
wen congyangwen congyang138624.03%31.90%
andi kleenandi kleen72812.62%2113.29%
yinghai luyinghai lu57910.04%2515.82%
yasuaki ishimatsuyasuaki ishimatsu4026.97%31.90%
jack steinerjack steiner2584.47%10.63%
jeremy fitzhardingejeremy fitzhardinge2574.46%63.80%
tejun heotejun heo2213.83%53.16%
matt tolentinomatt tolentino1803.12%10.63%
suresh siddhasuresh siddha1783.09%63.80%
christoph lameterchristoph lameter1692.93%21.27%
haicheng lihaicheng li1482.57%21.27%
jan beulichjan beulich1422.46%53.16%
dan williamsdan williams1332.31%31.90%
johannes weinerjohannes weiner1172.03%31.90%
steven rostedtsteven rostedt1151.99%21.27%
thomas gleixnerthomas gleixner971.68%53.16%
eduardo habkosteduardo habkost791.37%10.63%
tang chentang chen771.34%42.53%
keith manntheykeith mannthey761.32%21.27%
pekka j enbergpekka j enberg671.16%42.53%
shaohui zhengshaohui zheng651.13%10.63%
arjan van de venarjan van de ven530.92%63.80%
juergen grossjuergen gross290.50%10.63%
mel gormanmel gorman180.31%10.63%
seth jenningsseth jennings180.31%10.63%
alexander duyckalexander duyck140.24%10.63%
kees cookkees cook140.24%10.63%
nathan fontenotnathan fontenot130.23%10.63%
lai jiangshanlai jiangshan130.23%10.63%
linus torvaldslinus torvalds120.21%21.27%
jiang liujiang liu120.21%42.53%
wang nanwang nan90.16%10.63%
ingo molnaringo molnar90.16%31.90%
yasunori gotoyasunori goto90.16%10.63%
borislav petkovborislav petkov80.14%10.63%
muli ben-yehudamuli ben-yehuda50.09%10.63%
stephen d. smalleystephen d. smalley50.09%21.27%
hugh dickinshugh dickins40.07%21.27%
fengguang wufengguang wu40.07%10.63%
gary hadegary hade40.07%21.27%
mathieu desnoyersmathieu desnoyers40.07%10.63%
david howellsdavid howells30.05%10.63%
konrad rzeszutek wilkkonrad rzeszutek wilk30.05%10.63%
randy dunlaprandy dunlap30.05%10.63%
harvey harrisonharvey harrison30.05%10.63%
andrea arcangeliandrea arcangeli30.05%10.63%
benjamin herrenschmidtbenjamin herrenschmidt30.05%10.63%
andy lutomirskiandy lutomirski20.03%10.63%
kefeng wangkefeng wang20.03%10.63%
kamezawa hiroyukikamezawa hiroyuki20.03%10.63%
marcin slusarzmarcin slusarz20.03%10.63%
vegard nossumvegard nossum20.03%10.63%
joerg roedeljoerg roedel10.02%10.63%
jon masonjon mason10.02%10.63%
pavel machekpavel machek10.02%10.63%
zhang yanfeizhang yanfei10.02%10.63%
andrew mortonandrew morton10.02%10.63%
daniel j bluemandaniel j blueman10.02%10.63%
david vrabeldavid vrabel10.02%10.63%
li shaohuali shaohua10.02%10.63%
Total5767100.00%158100.00%
Directory: arch/x86/mm
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