Loading...
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 | /* * mm/debug.c * * mm/ specific debug routines. * */ #include <linux/kernel.h> #include <linux/mm.h> #include <linux/trace_events.h> #include <linux/memcontrol.h> #include <trace/events/mmflags.h> #include <linux/migrate.h> #include <linux/page_owner.h> #include "internal.h" char *migrate_reason_names[MR_TYPES] = { "compaction", "memory_failure", "memory_hotplug", "syscall_or_cpuset", "mempolicy_mbind", "numa_misplaced", "cma", }; const struct trace_print_flags pageflag_names[] = { __def_pageflag_names, {0, NULL} }; const struct trace_print_flags gfpflag_names[] = { __def_gfpflag_names, {0, NULL} }; const struct trace_print_flags vmaflag_names[] = { __def_vmaflag_names, {0, NULL} }; void __dump_page(struct page *page, const char *reason) { /* * Avoid VM_BUG_ON() in page_mapcount(). * page->_mapcount space in struct page is used by sl[aou]b pages to * encode own info. */ int mapcount = PageSlab(page) ? 0 : page_mapcount(page); pr_emerg("page:%p count:%d mapcount:%d mapping:%p index:%#lx", page, page_ref_count(page), mapcount, page->mapping, page_to_pgoff(page)); if (PageCompound(page)) pr_cont(" compound_mapcount: %d", compound_mapcount(page)); pr_cont("\n"); BUILD_BUG_ON(ARRAY_SIZE(pageflag_names) != __NR_PAGEFLAGS + 1); pr_emerg("flags: %#lx(%pGp)\n", page->flags, &page->flags); if (reason) pr_alert("page dumped because: %s\n", reason); #ifdef CONFIG_MEMCG if (page->mem_cgroup) pr_alert("page->mem_cgroup:%p\n", page->mem_cgroup); #endif } void dump_page(struct page *page, const char *reason) { __dump_page(page, reason); dump_page_owner(page); } EXPORT_SYMBOL(dump_page); #ifdef CONFIG_DEBUG_VM void dump_vma(const struct vm_area_struct *vma) { pr_emerg("vma %p start %p end %p\n" "next %p prev %p mm %p\n" "prot %lx anon_vma %p vm_ops %p\n" "pgoff %lx file %p private_data %p\n" "flags: %#lx(%pGv)\n", vma, (void *)vma->vm_start, (void *)vma->vm_end, vma->vm_next, vma->vm_prev, vma->vm_mm, (unsigned long)pgprot_val(vma->vm_page_prot), vma->anon_vma, vma->vm_ops, vma->vm_pgoff, vma->vm_file, vma->vm_private_data, vma->vm_flags, &vma->vm_flags); } EXPORT_SYMBOL(dump_vma); void dump_mm(const struct mm_struct *mm) { pr_emerg("mm %p mmap %p seqnum %d task_size %lu\n" #ifdef CONFIG_MMU "get_unmapped_area %p\n" #endif "mmap_base %lu mmap_legacy_base %lu highest_vm_end %lu\n" "pgd %p mm_users %d mm_count %d nr_ptes %lu nr_pmds %lu map_count %d\n" "hiwater_rss %lx hiwater_vm %lx total_vm %lx locked_vm %lx\n" "pinned_vm %lx data_vm %lx exec_vm %lx stack_vm %lx\n" "start_code %lx end_code %lx start_data %lx end_data %lx\n" "start_brk %lx brk %lx start_stack %lx\n" "arg_start %lx arg_end %lx env_start %lx env_end %lx\n" "binfmt %p flags %lx core_state %p\n" #ifdef CONFIG_AIO "ioctx_table %p\n" #endif #ifdef CONFIG_MEMCG "owner %p " #endif "exe_file %p\n" #ifdef CONFIG_MMU_NOTIFIER "mmu_notifier_mm %p\n" #endif #ifdef CONFIG_NUMA_BALANCING "numa_next_scan %lu numa_scan_offset %lu numa_scan_seq %d\n" #endif #if defined(CONFIG_NUMA_BALANCING) || defined(CONFIG_COMPACTION) "tlb_flush_pending %d\n" #endif "def_flags: %#lx(%pGv)\n", mm, mm->mmap, mm->vmacache_seqnum, mm->task_size, #ifdef CONFIG_MMU mm->get_unmapped_area, #endif mm->mmap_base, mm->mmap_legacy_base, mm->highest_vm_end, mm->pgd, atomic_read(&mm->mm_users), atomic_read(&mm->mm_count), atomic_long_read((atomic_long_t *)&mm->nr_ptes), mm_nr_pmds((struct mm_struct *)mm), mm->map_count, mm->hiwater_rss, mm->hiwater_vm, mm->total_vm, mm->locked_vm, mm->pinned_vm, mm->data_vm, mm->exec_vm, mm->stack_vm, mm->start_code, mm->end_code, mm->start_data, mm->end_data, mm->start_brk, mm->brk, mm->start_stack, mm->arg_start, mm->arg_end, mm->env_start, mm->env_end, mm->binfmt, mm->flags, mm->core_state, #ifdef CONFIG_AIO mm->ioctx_table, #endif #ifdef CONFIG_MEMCG mm->owner, #endif mm->exe_file, #ifdef CONFIG_MMU_NOTIFIER mm->mmu_notifier_mm, #endif #ifdef CONFIG_NUMA_BALANCING mm->numa_next_scan, mm->numa_scan_offset, mm->numa_scan_seq, #endif #if defined(CONFIG_NUMA_BALANCING) || defined(CONFIG_COMPACTION) mm->tlb_flush_pending, #endif mm->def_flags, &mm->def_flags ); } #endif /* CONFIG_DEBUG_VM */ |