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- // SPDX-License-Identifier: GPL-2.0
- #include "symbol.h"
- #include <assert.h>
- #include <errno.h>
- #include <inttypes.h>
- #include <limits.h>
- #include <stdlib.h>
- #include <string.h>
- #include <stdio.h>
- #include <unistd.h>
- #include <uapi/linux/mman.h> /* To get things like MAP_HUGETLB even on older libc headers */
- #include "dso.h"
- #include "map.h"
- #include "map_symbol.h"
- #include "thread.h"
- #include "vdso.h"
- #include "build-id.h"
- #include "debug.h"
- #include "machine.h"
- #include <linux/string.h>
- #include <linux/zalloc.h>
- #include "srcline.h"
- #include "namespaces.h"
- #include "unwind.h"
- #include "srccode.h"
- #include "ui/ui.h"
- static void __maps__insert(struct maps *maps, struct map *map);
- static inline int is_android_lib(const char *filename)
- {
- return strstarts(filename, "/data/app-lib/") ||
- strstarts(filename, "/system/lib/");
- }
- static inline bool replace_android_lib(const char *filename, char *newfilename)
- {
- const char *libname;
- char *app_abi;
- size_t app_abi_length, new_length;
- size_t lib_length = 0;
- libname = strrchr(filename, '/');
- if (libname)
- lib_length = strlen(libname);
- app_abi = getenv("APP_ABI");
- if (!app_abi)
- return false;
- app_abi_length = strlen(app_abi);
- if (strstarts(filename, "/data/app-lib/")) {
- char *apk_path;
- if (!app_abi_length)
- return false;
- new_length = 7 + app_abi_length + lib_length;
- apk_path = getenv("APK_PATH");
- if (apk_path) {
- new_length += strlen(apk_path) + 1;
- if (new_length > PATH_MAX)
- return false;
- snprintf(newfilename, new_length,
- "%s/libs/%s/%s", apk_path, app_abi, libname);
- } else {
- if (new_length > PATH_MAX)
- return false;
- snprintf(newfilename, new_length,
- "libs/%s/%s", app_abi, libname);
- }
- return true;
- }
- if (strstarts(filename, "/system/lib/")) {
- char *ndk, *app;
- const char *arch;
- int ndk_length, app_length;
- ndk = getenv("NDK_ROOT");
- app = getenv("APP_PLATFORM");
- if (!(ndk && app))
- return false;
- ndk_length = strlen(ndk);
- app_length = strlen(app);
- if (!(ndk_length && app_length && app_abi_length))
- return false;
- arch = !strncmp(app_abi, "arm", 3) ? "arm" :
- !strncmp(app_abi, "mips", 4) ? "mips" :
- !strncmp(app_abi, "x86", 3) ? "x86" : NULL;
- if (!arch)
- return false;
- new_length = 27 + ndk_length +
- app_length + lib_length
- + strlen(arch);
- if (new_length > PATH_MAX)
- return false;
- snprintf(newfilename, new_length,
- "%.*s/platforms/%.*s/arch-%s/usr/lib/%s",
- ndk_length, ndk, app_length, app, arch, libname);
- return true;
- }
- return false;
- }
- void map__init(struct map *map, u64 start, u64 end, u64 pgoff, struct dso *dso)
- {
- map->start = start;
- map->end = end;
- map->pgoff = pgoff;
- map->reloc = 0;
- map->dso = dso__get(dso);
- map->map_ip = map__map_ip;
- map->unmap_ip = map__unmap_ip;
- RB_CLEAR_NODE(&map->rb_node);
- map->erange_warned = false;
- refcount_set(&map->refcnt, 1);
- }
- struct map *map__new(struct machine *machine, u64 start, u64 len,
- u64 pgoff, struct dso_id *id,
- u32 prot, u32 flags, char *filename,
- struct thread *thread)
- {
- struct map *map = malloc(sizeof(*map));
- struct nsinfo *nsi = NULL;
- struct nsinfo *nnsi;
- if (map != NULL) {
- char newfilename[PATH_MAX];
- struct dso *dso;
- int anon, no_dso, vdso, android;
- android = is_android_lib(filename);
- anon = is_anon_memory(filename) || flags & MAP_HUGETLB;
- vdso = is_vdso_map(filename);
- no_dso = is_no_dso_memory(filename);
- map->prot = prot;
- map->flags = flags;
- nsi = nsinfo__get(thread->nsinfo);
- if ((anon || no_dso) && nsi && (prot & PROT_EXEC)) {
- snprintf(newfilename, sizeof(newfilename),
- "/tmp/perf-%d.map", nsi->pid);
- filename = newfilename;
- }
- if (android) {
- if (replace_android_lib(filename, newfilename))
- filename = newfilename;
- }
- if (vdso) {
- /* The vdso maps are always on the host and not the
- * container. Ensure that we don't use setns to look
- * them up.
- */
- nnsi = nsinfo__copy(nsi);
- if (nnsi) {
- nsinfo__put(nsi);
- nnsi->need_setns = false;
- nsi = nnsi;
- }
- pgoff = 0;
- dso = machine__findnew_vdso(machine, thread);
- } else
- dso = machine__findnew_dso_id(machine, filename, id);
- if (dso == NULL)
- goto out_delete;
- map__init(map, start, start + len, pgoff, dso);
- if (anon || no_dso) {
- map->map_ip = map->unmap_ip = identity__map_ip;
- /*
- * Set memory without DSO as loaded. All map__find_*
- * functions still return NULL, and we avoid the
- * unnecessary map__load warning.
- */
- if (!(prot & PROT_EXEC))
- dso__set_loaded(dso);
- }
- dso->nsinfo = nsi;
- dso__put(dso);
- }
- return map;
- out_delete:
- nsinfo__put(nsi);
- free(map);
- return NULL;
- }
- /*
- * Constructor variant for modules (where we know from /proc/modules where
- * they are loaded) and for vmlinux, where only after we load all the
- * symbols we'll know where it starts and ends.
- */
- struct map *map__new2(u64 start, struct dso *dso)
- {
- struct map *map = calloc(1, (sizeof(*map) +
- (dso->kernel ? sizeof(struct kmap) : 0)));
- if (map != NULL) {
- /*
- * ->end will be filled after we load all the symbols
- */
- map__init(map, start, 0, 0, dso);
- }
- return map;
- }
- bool __map__is_kernel(const struct map *map)
- {
- if (!map->dso->kernel)
- return false;
- return machine__kernel_map(map__kmaps((struct map *)map)->machine) == map;
- }
- bool __map__is_extra_kernel_map(const struct map *map)
- {
- struct kmap *kmap = __map__kmap((struct map *)map);
- return kmap && kmap->name[0];
- }
- bool __map__is_bpf_prog(const struct map *map)
- {
- const char *name;
- if (map->dso->binary_type == DSO_BINARY_TYPE__BPF_PROG_INFO)
- return true;
- /*
- * If PERF_RECORD_BPF_EVENT is not included, the dso will not have
- * type of DSO_BINARY_TYPE__BPF_PROG_INFO. In such cases, we can
- * guess the type based on name.
- */
- name = map->dso->short_name;
- return name && (strstr(name, "bpf_prog_") == name);
- }
- bool __map__is_bpf_image(const struct map *map)
- {
- const char *name;
- if (map->dso->binary_type == DSO_BINARY_TYPE__BPF_IMAGE)
- return true;
- /*
- * If PERF_RECORD_KSYMBOL is not included, the dso will not have
- * type of DSO_BINARY_TYPE__BPF_IMAGE. In such cases, we can
- * guess the type based on name.
- */
- name = map->dso->short_name;
- return name && is_bpf_image(name);
- }
- bool __map__is_ool(const struct map *map)
- {
- return map->dso && map->dso->binary_type == DSO_BINARY_TYPE__OOL;
- }
- bool map__has_symbols(const struct map *map)
- {
- return dso__has_symbols(map->dso);
- }
- static void map__exit(struct map *map)
- {
- BUG_ON(refcount_read(&map->refcnt) != 0);
- dso__zput(map->dso);
- }
- void map__delete(struct map *map)
- {
- map__exit(map);
- free(map);
- }
- void map__put(struct map *map)
- {
- if (map && refcount_dec_and_test(&map->refcnt))
- map__delete(map);
- }
- void map__fixup_start(struct map *map)
- {
- struct rb_root_cached *symbols = &map->dso->symbols;
- struct rb_node *nd = rb_first_cached(symbols);
- if (nd != NULL) {
- struct symbol *sym = rb_entry(nd, struct symbol, rb_node);
- map->start = sym->start;
- }
- }
- void map__fixup_end(struct map *map)
- {
- struct rb_root_cached *symbols = &map->dso->symbols;
- struct rb_node *nd = rb_last(&symbols->rb_root);
- if (nd != NULL) {
- struct symbol *sym = rb_entry(nd, struct symbol, rb_node);
- map->end = sym->end;
- }
- }
- #define DSO__DELETED "(deleted)"
- int map__load(struct map *map)
- {
- const char *name = map->dso->long_name;
- int nr;
- if (dso__loaded(map->dso))
- return 0;
- nr = dso__load(map->dso, map);
- if (nr < 0) {
- if (map->dso->has_build_id) {
- char sbuild_id[SBUILD_ID_SIZE];
- build_id__sprintf(&map->dso->bid, sbuild_id);
- pr_debug("%s with build id %s not found", name, sbuild_id);
- } else
- pr_debug("Failed to open %s", name);
- pr_debug(", continuing without symbols\n");
- return -1;
- } else if (nr == 0) {
- #ifdef HAVE_LIBELF_SUPPORT
- const size_t len = strlen(name);
- const size_t real_len = len - sizeof(DSO__DELETED);
- if (len > sizeof(DSO__DELETED) &&
- strcmp(name + real_len + 1, DSO__DELETED) == 0) {
- pr_debug("%.*s was updated (is prelink enabled?). "
- "Restart the long running apps that use it!\n",
- (int)real_len, name);
- } else {
- pr_debug("no symbols found in %s, maybe install a debug package?\n", name);
- }
- #endif
- return -1;
- }
- return 0;
- }
- struct symbol *map__find_symbol(struct map *map, u64 addr)
- {
- if (map__load(map) < 0)
- return NULL;
- return dso__find_symbol(map->dso, addr);
- }
- struct symbol *map__find_symbol_by_name(struct map *map, const char *name)
- {
- if (map__load(map) < 0)
- return NULL;
- if (!dso__sorted_by_name(map->dso))
- dso__sort_by_name(map->dso);
- return dso__find_symbol_by_name(map->dso, name);
- }
- struct map *map__clone(struct map *from)
- {
- size_t size = sizeof(struct map);
- struct map *map;
- if (from->dso && from->dso->kernel)
- size += sizeof(struct kmap);
- map = memdup(from, size);
- if (map != NULL) {
- refcount_set(&map->refcnt, 1);
- RB_CLEAR_NODE(&map->rb_node);
- dso__get(map->dso);
- }
- return map;
- }
- size_t map__fprintf(struct map *map, FILE *fp)
- {
- return fprintf(fp, " %" PRIx64 "-%" PRIx64 " %" PRIx64 " %s\n",
- map->start, map->end, map->pgoff, map->dso->name);
- }
- size_t map__fprintf_dsoname(struct map *map, FILE *fp)
- {
- char buf[symbol_conf.pad_output_len_dso + 1];
- const char *dsoname = "[unknown]";
- if (map && map->dso) {
- if (symbol_conf.show_kernel_path && map->dso->long_name)
- dsoname = map->dso->long_name;
- else
- dsoname = map->dso->name;
- }
- if (symbol_conf.pad_output_len_dso) {
- scnprintf_pad(buf, symbol_conf.pad_output_len_dso, "%s", dsoname);
- dsoname = buf;
- }
- return fprintf(fp, "%s", dsoname);
- }
- char *map__srcline(struct map *map, u64 addr, struct symbol *sym)
- {
- if (map == NULL)
- return SRCLINE_UNKNOWN;
- return get_srcline(map->dso, map__rip_2objdump(map, addr), sym, true, true, addr);
- }
- int map__fprintf_srcline(struct map *map, u64 addr, const char *prefix,
- FILE *fp)
- {
- int ret = 0;
- if (map && map->dso) {
- char *srcline = map__srcline(map, addr, NULL);
- if (strncmp(srcline, SRCLINE_UNKNOWN, strlen(SRCLINE_UNKNOWN)) != 0)
- ret = fprintf(fp, "%s%s", prefix, srcline);
- free_srcline(srcline);
- }
- return ret;
- }
- void srccode_state_free(struct srccode_state *state)
- {
- zfree(&state->srcfile);
- state->line = 0;
- }
- /**
- * map__rip_2objdump - convert symbol start address to objdump address.
- * @map: memory map
- * @rip: symbol start address
- *
- * objdump wants/reports absolute IPs for ET_EXEC, and RIPs for ET_DYN.
- * map->dso->adjust_symbols==1 for ET_EXEC-like cases except ET_REL which is
- * relative to section start.
- *
- * Return: Address suitable for passing to "objdump --start-address="
- */
- u64 map__rip_2objdump(struct map *map, u64 rip)
- {
- struct kmap *kmap = __map__kmap(map);
- /*
- * vmlinux does not have program headers for PTI entry trampolines and
- * kcore may not either. However the trampoline object code is on the
- * main kernel map, so just use that instead.
- */
- if (kmap && is_entry_trampoline(kmap->name) && kmap->kmaps && kmap->kmaps->machine) {
- struct map *kernel_map = machine__kernel_map(kmap->kmaps->machine);
- if (kernel_map)
- map = kernel_map;
- }
- if (!map->dso->adjust_symbols)
- return rip;
- if (map->dso->rel)
- return rip - map->pgoff;
- /*
- * kernel modules also have DSO_TYPE_USER in dso->kernel,
- * but all kernel modules are ET_REL, so won't get here.
- */
- if (map->dso->kernel == DSO_SPACE__USER)
- return rip + map->dso->text_offset;
- return map->unmap_ip(map, rip) - map->reloc;
- }
- /**
- * map__objdump_2mem - convert objdump address to a memory address.
- * @map: memory map
- * @ip: objdump address
- *
- * Closely related to map__rip_2objdump(), this function takes an address from
- * objdump and converts it to a memory address. Note this assumes that @map
- * contains the address. To be sure the result is valid, check it forwards
- * e.g. map__rip_2objdump(map->map_ip(map, map__objdump_2mem(map, ip))) == ip
- *
- * Return: Memory address.
- */
- u64 map__objdump_2mem(struct map *map, u64 ip)
- {
- if (!map->dso->adjust_symbols)
- return map->unmap_ip(map, ip);
- if (map->dso->rel)
- return map->unmap_ip(map, ip + map->pgoff);
- /*
- * kernel modules also have DSO_TYPE_USER in dso->kernel,
- * but all kernel modules are ET_REL, so won't get here.
- */
- if (map->dso->kernel == DSO_SPACE__USER)
- return map->unmap_ip(map, ip - map->dso->text_offset);
- return ip + map->reloc;
- }
- void maps__init(struct maps *maps, struct machine *machine)
- {
- maps->entries = RB_ROOT;
- init_rwsem(&maps->lock);
- maps->machine = machine;
- maps->last_search_by_name = NULL;
- maps->nr_maps = 0;
- maps->maps_by_name = NULL;
- refcount_set(&maps->refcnt, 1);
- }
- static void __maps__free_maps_by_name(struct maps *maps)
- {
- /*
- * Free everything to try to do it from the rbtree in the next search
- */
- zfree(&maps->maps_by_name);
- maps->nr_maps_allocated = 0;
- }
- void maps__insert(struct maps *maps, struct map *map)
- {
- down_write(&maps->lock);
- __maps__insert(maps, map);
- ++maps->nr_maps;
- if (map->dso && map->dso->kernel) {
- struct kmap *kmap = map__kmap(map);
- if (kmap)
- kmap->kmaps = maps;
- else
- pr_err("Internal error: kernel dso with non kernel map\n");
- }
- /*
- * If we already performed some search by name, then we need to add the just
- * inserted map and resort.
- */
- if (maps->maps_by_name) {
- if (maps->nr_maps > maps->nr_maps_allocated) {
- int nr_allocate = maps->nr_maps * 2;
- struct map **maps_by_name = realloc(maps->maps_by_name, nr_allocate * sizeof(map));
- if (maps_by_name == NULL) {
- __maps__free_maps_by_name(maps);
- up_write(&maps->lock);
- return;
- }
- maps->maps_by_name = maps_by_name;
- maps->nr_maps_allocated = nr_allocate;
- }
- maps->maps_by_name[maps->nr_maps - 1] = map;
- __maps__sort_by_name(maps);
- }
- up_write(&maps->lock);
- }
- static void __maps__remove(struct maps *maps, struct map *map)
- {
- rb_erase_init(&map->rb_node, &maps->entries);
- map__put(map);
- }
- void maps__remove(struct maps *maps, struct map *map)
- {
- down_write(&maps->lock);
- if (maps->last_search_by_name == map)
- maps->last_search_by_name = NULL;
- __maps__remove(maps, map);
- --maps->nr_maps;
- if (maps->maps_by_name)
- __maps__free_maps_by_name(maps);
- up_write(&maps->lock);
- }
- static void __maps__purge(struct maps *maps)
- {
- struct map *pos, *next;
- maps__for_each_entry_safe(maps, pos, next) {
- rb_erase_init(&pos->rb_node, &maps->entries);
- map__put(pos);
- }
- }
- void maps__exit(struct maps *maps)
- {
- down_write(&maps->lock);
- __maps__purge(maps);
- up_write(&maps->lock);
- }
- bool maps__empty(struct maps *maps)
- {
- return !maps__first(maps);
- }
- struct maps *maps__new(struct machine *machine)
- {
- struct maps *maps = zalloc(sizeof(*maps));
- if (maps != NULL)
- maps__init(maps, machine);
- return maps;
- }
- void maps__delete(struct maps *maps)
- {
- maps__exit(maps);
- unwind__finish_access(maps);
- free(maps);
- }
- void maps__put(struct maps *maps)
- {
- if (maps && refcount_dec_and_test(&maps->refcnt))
- maps__delete(maps);
- }
- struct symbol *maps__find_symbol(struct maps *maps, u64 addr, struct map **mapp)
- {
- struct map *map = maps__find(maps, addr);
- /* Ensure map is loaded before using map->map_ip */
- if (map != NULL && map__load(map) >= 0) {
- if (mapp != NULL)
- *mapp = map;
- return map__find_symbol(map, map->map_ip(map, addr));
- }
- return NULL;
- }
- static bool map__contains_symbol(struct map *map, struct symbol *sym)
- {
- u64 ip = map->unmap_ip(map, sym->start);
- return ip >= map->start && ip < map->end;
- }
- struct symbol *maps__find_symbol_by_name(struct maps *maps, const char *name, struct map **mapp)
- {
- struct symbol *sym;
- struct map *pos;
- down_read(&maps->lock);
- maps__for_each_entry(maps, pos) {
- sym = map__find_symbol_by_name(pos, name);
- if (sym == NULL)
- continue;
- if (!map__contains_symbol(pos, sym)) {
- sym = NULL;
- continue;
- }
- if (mapp != NULL)
- *mapp = pos;
- goto out;
- }
- sym = NULL;
- out:
- up_read(&maps->lock);
- return sym;
- }
- int maps__find_ams(struct maps *maps, struct addr_map_symbol *ams)
- {
- if (ams->addr < ams->ms.map->start || ams->addr >= ams->ms.map->end) {
- if (maps == NULL)
- return -1;
- ams->ms.map = maps__find(maps, ams->addr);
- if (ams->ms.map == NULL)
- return -1;
- }
- ams->al_addr = ams->ms.map->map_ip(ams->ms.map, ams->addr);
- ams->ms.sym = map__find_symbol(ams->ms.map, ams->al_addr);
- return ams->ms.sym ? 0 : -1;
- }
- size_t maps__fprintf(struct maps *maps, FILE *fp)
- {
- size_t printed = 0;
- struct map *pos;
- down_read(&maps->lock);
- maps__for_each_entry(maps, pos) {
- printed += fprintf(fp, "Map:");
- printed += map__fprintf(pos, fp);
- if (verbose > 2) {
- printed += dso__fprintf(pos->dso, fp);
- printed += fprintf(fp, "--\n");
- }
- }
- up_read(&maps->lock);
- return printed;
- }
- int maps__fixup_overlappings(struct maps *maps, struct map *map, FILE *fp)
- {
- struct rb_root *root;
- struct rb_node *next, *first;
- int err = 0;
- down_write(&maps->lock);
- root = &maps->entries;
- /*
- * Find first map where end > map->start.
- * Same as find_vma() in kernel.
- */
- next = root->rb_node;
- first = NULL;
- while (next) {
- struct map *pos = rb_entry(next, struct map, rb_node);
- if (pos->end > map->start) {
- first = next;
- if (pos->start <= map->start)
- break;
- next = next->rb_left;
- } else
- next = next->rb_right;
- }
- next = first;
- while (next) {
- struct map *pos = rb_entry(next, struct map, rb_node);
- next = rb_next(&pos->rb_node);
- /*
- * Stop if current map starts after map->end.
- * Maps are ordered by start: next will not overlap for sure.
- */
- if (pos->start >= map->end)
- break;
- if (verbose >= 2) {
- if (use_browser) {
- pr_debug("overlapping maps in %s (disable tui for more info)\n",
- map->dso->name);
- } else {
- fputs("overlapping maps:\n", fp);
- map__fprintf(map, fp);
- map__fprintf(pos, fp);
- }
- }
- rb_erase_init(&pos->rb_node, root);
- /*
- * Now check if we need to create new maps for areas not
- * overlapped by the new map:
- */
- if (map->start > pos->start) {
- struct map *before = map__clone(pos);
- if (before == NULL) {
- err = -ENOMEM;
- goto put_map;
- }
- before->end = map->start;
- __maps__insert(maps, before);
- if (verbose >= 2 && !use_browser)
- map__fprintf(before, fp);
- map__put(before);
- }
- if (map->end < pos->end) {
- struct map *after = map__clone(pos);
- if (after == NULL) {
- err = -ENOMEM;
- goto put_map;
- }
- after->start = map->end;
- after->pgoff += map->end - pos->start;
- assert(pos->map_ip(pos, map->end) == after->map_ip(after, map->end));
- __maps__insert(maps, after);
- if (verbose >= 2 && !use_browser)
- map__fprintf(after, fp);
- map__put(after);
- }
- put_map:
- map__put(pos);
- if (err)
- goto out;
- }
- err = 0;
- out:
- up_write(&maps->lock);
- return err;
- }
- /*
- * XXX This should not really _copy_ te maps, but refcount them.
- */
- int maps__clone(struct thread *thread, struct maps *parent)
- {
- struct maps *maps = thread->maps;
- int err;
- struct map *map;
- down_read(&parent->lock);
- maps__for_each_entry(parent, map) {
- struct map *new = map__clone(map);
- if (new == NULL) {
- err = -ENOMEM;
- goto out_unlock;
- }
- err = unwind__prepare_access(maps, new, NULL);
- if (err)
- goto out_unlock;
- maps__insert(maps, new);
- map__put(new);
- }
- err = 0;
- out_unlock:
- up_read(&parent->lock);
- return err;
- }
- static void __maps__insert(struct maps *maps, struct map *map)
- {
- struct rb_node **p = &maps->entries.rb_node;
- struct rb_node *parent = NULL;
- const u64 ip = map->start;
- struct map *m;
- while (*p != NULL) {
- parent = *p;
- m = rb_entry(parent, struct map, rb_node);
- if (ip < m->start)
- p = &(*p)->rb_left;
- else
- p = &(*p)->rb_right;
- }
- rb_link_node(&map->rb_node, parent, p);
- rb_insert_color(&map->rb_node, &maps->entries);
- map__get(map);
- }
- struct map *maps__find(struct maps *maps, u64 ip)
- {
- struct rb_node *p;
- struct map *m;
- down_read(&maps->lock);
- p = maps->entries.rb_node;
- while (p != NULL) {
- m = rb_entry(p, struct map, rb_node);
- if (ip < m->start)
- p = p->rb_left;
- else if (ip >= m->end)
- p = p->rb_right;
- else
- goto out;
- }
- m = NULL;
- out:
- up_read(&maps->lock);
- return m;
- }
- struct map *maps__first(struct maps *maps)
- {
- struct rb_node *first = rb_first(&maps->entries);
- if (first)
- return rb_entry(first, struct map, rb_node);
- return NULL;
- }
- static struct map *__map__next(struct map *map)
- {
- struct rb_node *next = rb_next(&map->rb_node);
- if (next)
- return rb_entry(next, struct map, rb_node);
- return NULL;
- }
- struct map *map__next(struct map *map)
- {
- return map ? __map__next(map) : NULL;
- }
- struct kmap *__map__kmap(struct map *map)
- {
- if (!map->dso || !map->dso->kernel)
- return NULL;
- return (struct kmap *)(map + 1);
- }
- struct kmap *map__kmap(struct map *map)
- {
- struct kmap *kmap = __map__kmap(map);
- if (!kmap)
- pr_err("Internal error: map__kmap with a non-kernel map\n");
- return kmap;
- }
- struct maps *map__kmaps(struct map *map)
- {
- struct kmap *kmap = map__kmap(map);
- if (!kmap || !kmap->kmaps) {
- pr_err("Internal error: map__kmaps with a non-kernel map\n");
- return NULL;
- }
- return kmap->kmaps;
- }
|