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/* memory.c - core analysis suite * * Copyright (C) 1999, 2000, 2001, 2002 Mission Critical Linux, Inc. * Copyright (C) 2002-2019 David Anderson * Copyright (C) 2002-2019 Red Hat, Inc. All rights reserved. * Copyright (C) 2002 Silicon Graphics, Inc. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. */ #include "defs.h" #include <sys/mman.h> #include <ctype.h> #include <netinet/in.h> #include <byteswap.h> #include "maple_tree.h" struct meminfo { /* general purpose memory information structure */ ulong cache; /* used by the various memory searching/dumping */ ulong slab; /* routines. Only one of these is used per cmd */ ulong c_flags; /* so stuff whatever's helpful in here... */ ulong c_offset; ulong c_num; ulong s_mem; void *s_freep; ulong *s_index; ulong s_inuse; ulong cpucached_cache; ulong cpucached_slab; ulong inuse; ulong order; ulong slabsize; ulong num_slabs; ulong objects; ulonglong spec_addr; ulong flags; ulong size; ulong objsize; int memtype; int free; int slab_offset; char *reqname; char *curname; ulong *spec_cpumask; ulong *addrlist; int *kmem_bufctl; ulong *cpudata[NR_CPUS]; ulong *shared_array_cache; int current_cache_index; ulong found; ulong retval; struct struct_member_data *page_member_cache; ulong nr_members; char *ignore; int errors; int calls; int cpu; int cache_count; ulong get_shared; ulong get_totalram; ulong get_buffers; ulong get_slabs; char *slab_buf; char *cache_buf; ulong *cache_list; struct vmlist { ulong addr; ulong size; } *vmlist; ulong container; int *freelist; int freelist_index_size; ulong random; ulong list_offset; }; /* * Search modes */ #define SEARCH_ULONG (0) #define SEARCH_UINT (1) #define SEARCH_USHORT (2) #define SEARCH_CHARS (3) #define SEARCH_DEFAULT (SEARCH_ULONG) /* search mode information */ struct searchinfo { int mode; int vcnt; int val; int context; int memtype; int do_task_header; int tasks_found; struct task_context *task_context; ulong vaddr_start; ulong vaddr_end; ulonglong paddr_start; ulonglong paddr_end; union { /* default ulong search */ struct { ulong value[MAXARGS]; char *opt_string[MAXARGS]; ulong mask; } s_ulong; /* uint search */ struct { uint value[MAXARGS]; char *opt_string[MAXARGS]; uint mask; } s_uint; /* ushort search */ struct { ushort value[MAXARGS]; char *opt_string[MAXARGS]; ushort mask; } s_ushort; /* string (chars) search */ struct { char *value[MAXARGS]; int len[MAXARGS]; int started_flag; /* string search needs history */ } s_chars; } s_parms; char buf[BUFSIZE]; }; struct handle_each_vm_area_args { ulong task; ulong flag; ulong vaddr; struct reference *ref; char *vma_header; char *buf1; char *buf2; char *buf3; char *buf4; char *buf5; ulong vma; char **vma_buf; struct task_mem_usage *tm; int *found; int *single_vma_found; unsigned int radix; struct task_context *tc; ulong *single_vma; }; static char *memtype_string(int, int); static char *error_handle_string(ulong); static void collect_page_member_data(char *, struct meminfo *); struct integer_data { ulong value; ulong bitfield_value; struct struct_member_data *pmd; }; static int get_bitfield_data(struct integer_data *); static int show_page_member_data(char *, ulong, struct meminfo *, char *); static void dump_mem_map(struct meminfo *); static void dump_mem_map_SPARSEMEM(struct meminfo *); static void fill_mem_map_cache(ulong, ulong, char *); static void page_flags_init(void); static int page_flags_init_from_pageflag_names(void); static int page_flags_init_from_pageflags_enum(void); static int translate_page_flags(char *, ulong); static void dump_free_pages(struct meminfo *); static int dump_zone_page_usage(void); static void dump_multidimensional_free_pages(struct meminfo *); static void dump_free_pages_zones_v1(struct meminfo *); static void dump_free_pages_zones_v2(struct meminfo *); struct free_page_callback_data; static int dump_zone_free_area(ulong, int, ulong, struct free_page_callback_data *); static void dump_page_hash_table(struct meminfo *); static void kmem_search(struct meminfo *); static void kmem_cache_init(void); static void kmem_cache_init_slub(void); static ulong max_cpudata_limit(ulong, ulong *); static int kmem_cache_downsize(void); static int ignore_cache(struct meminfo *, char *); static char *is_kmem_cache_addr(ulong, char *); static char *is_kmem_cache_addr_common(ulong, char *); static void kmem_cache_list(struct meminfo *); static void dump_kmem_cache(struct meminfo *); static void dump_kmem_cache_percpu_v1(struct meminfo *); static void dump_kmem_cache_percpu_v2(struct meminfo *); static void dump_kmem_cache_slub(struct meminfo *); static void kmem_cache_list_common(struct meminfo *); static ulong get_cpu_slab_ptr(struct meminfo *, int, ulong *); static unsigned int oo_order(ulong); static unsigned int oo_objects(ulong); static char *vaddr_to_kmem_cache(ulong, char *, int); static char *is_slab_overload_page(ulong, ulong *, char *); static ulong vaddr_to_slab(ulong); static void do_slab_chain(int, struct meminfo *); static void do_slab_chain_percpu_v1(long, struct meminfo *); static void do_slab_chain_percpu_v2(long, struct meminfo *); static void do_slab_chain_percpu_v2_nodes(long, struct meminfo *); static void do_slab_chain_slab_overload_page(long, struct meminfo *); static int slab_freelist_index_size(void); static int do_slab_slub(struct meminfo *, int); static void do_kmem_cache_slub(struct meminfo *); static void save_slab_data(struct meminfo *); static int slab_data_saved(struct meminfo *); static void dump_saved_slab_data(void); static void dump_slab(struct meminfo *); static void dump_slab_percpu_v1(struct meminfo *); static void dump_slab_percpu_v2(struct meminfo *); static void dump_slab_overload_page(struct meminfo *); static int verify_slab_v1(struct meminfo *, ulong, int); static int verify_slab_v2(struct meminfo *, ulong, int); static int verify_slab_overload_page(struct meminfo *, ulong, int); static void gather_slab_free_list(struct meminfo *); static void gather_slab_free_list_percpu(struct meminfo *); static void gather_slab_free_list_slab_overload_page(struct meminfo *); static void gather_cpudata_list_v1(struct meminfo *); static void gather_cpudata_list_v2(struct meminfo *); static void gather_cpudata_list_v2_nodes(struct meminfo *, int); static int check_cpudata_list(struct meminfo *, ulong); static int check_shared_list(struct meminfo *, ulong); static void gather_slab_cached_count(struct meminfo *); static void dump_slab_objects(struct meminfo *); static void dump_slab_objects_percpu(struct meminfo *); static void dump_vmlist(struct meminfo *); static void dump_vmap_area(struct meminfo *); static int dump_page_lists(struct meminfo *); static void dump_kmeminfo(void); static int page_to_phys(ulong, physaddr_t *); static void display_memory(ulonglong, long, ulong, int, void *); static char *show_opt_string(struct searchinfo *); static void display_with_pre_and_post(void *, ulonglong, struct searchinfo *); static ulong search_ulong(ulong *, ulong, int, struct searchinfo *); static ulong search_uint(ulong *, ulong, int, struct searchinfo *); static ulong search_ushort(ulong *, ulong, int, struct searchinfo *); static ulong search_chars(ulong *, ulong, int, struct searchinfo *); static ulonglong search_ulong_p(ulong *, ulonglong, int, struct searchinfo *); stat