diff options
Diffstat (limited to 'tools/perf/util/symbol.c')
| -rw-r--r-- | tools/perf/util/symbol.c | 1194 |
1 files changed, 16 insertions, 1178 deletions
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c index e2e8c697cff..e6432d85b43 100644 --- a/tools/perf/util/symbol.c +++ b/tools/perf/util/symbol.c @@ -12,6 +12,7 @@ #include "build-id.h" #include "util.h" #include "debug.h" +#include "machine.h" #include "symbol.h" #include "strlist.h" @@ -23,13 +24,12 @@ #define KSYM_NAME_LEN 256 #endif -static void dso_cache__free(struct rb_root *root); static int dso__load_kernel_sym(struct dso *dso, struct map *map, symbol_filter_t filter); static int dso__load_guest_kernel_sym(struct dso *dso, struct map *map, symbol_filter_t filter); -static int vmlinux_path__nr_entries; -static char **vmlinux_path; +int vmlinux_path__nr_entries; +char **vmlinux_path; struct symbol_conf symbol_conf = { .exclude_other = true, @@ -56,39 +56,6 @@ static enum dso_binary_type binary_type_symtab[] = { #define DSO_BINARY_TYPE__SYMTAB_CNT ARRAY_SIZE(binary_type_symtab) -static enum dso_binary_type binary_type_data[] = { - DSO_BINARY_TYPE__BUILD_ID_CACHE, - DSO_BINARY_TYPE__SYSTEM_PATH_DSO, - DSO_BINARY_TYPE__NOT_FOUND, -}; - -#define DSO_BINARY_TYPE__DATA_CNT ARRAY_SIZE(binary_type_data) - -int dso__name_len(const struct dso *dso) -{ - if (!dso) - return strlen("[unknown]"); - if (verbose) - return dso->long_name_len; - - return dso->short_name_len; -} - -bool dso__loaded(const struct dso *dso, enum map_type type) -{ - return dso->loaded & (1 << type); -} - -bool dso__sorted_by_name(const struct dso *dso, enum map_type type) -{ - return dso->sorted_by_name & (1 << type); -} - -static void dso__set_sorted_by_name(struct dso *dso, enum map_type type) -{ - dso->sorted_by_name |= (1 << type); -} - bool symbol_type__is_a(char symbol_type, enum map_type map_type) { symbol_type = toupper(symbol_type); @@ -235,13 +202,6 @@ void __map_groups__fixup_end(struct map_groups *mg, enum map_type type) curr->end = ~0ULL; } -static void map_groups__fixup_end(struct map_groups *mg) -{ - int i; - for (i = 0; i < MAP__NR_TYPES; ++i) - __map_groups__fixup_end(mg, i); -} - struct symbol *symbol__new(u64 start, u64 len, u8 binding, const char *name) { size_t namelen = strlen(name) + 1; @@ -270,7 +230,7 @@ void symbol__delete(struct symbol *sym) free(((void *)sym) - symbol_conf.priv_size); } -static size_t symbol__fprintf(struct symbol *sym, FILE *fp) +size_t symbol__fprintf(struct symbol *sym, FILE *fp) { return fprintf(fp, " %" PRIx64 "-%" PRIx64 " %c %s\n", sym->start, sym->end, @@ -301,53 +261,7 @@ size_t symbol__fprintf_symname(const struct symbol *sym, FILE *fp) return symbol__fprintf_symname_offs(sym, NULL, fp); } -void dso__set_long_name(struct dso *dso, char *name) -{ - if (name == NULL) - return; - dso->long_name = name; - dso->long_name_len = strlen(name); -} - -static void dso__set_short_name(struct dso *dso, const char *name) -{ - if (name == NULL) - return; - dso->short_name = name; - dso->short_name_len = strlen(name); -} - -static void dso__set_basename(struct dso *dso) -{ - dso__set_short_name(dso, basename(dso->long_name)); -} - -struct dso *dso__new(const char *name) -{ - struct dso *dso = calloc(1, sizeof(*dso) + strlen(name) + 1); - - if (dso != NULL) { - int i; - strcpy(dso->name, name); - dso__set_long_name(dso, dso->name); - dso__set_short_name(dso, dso->name); - for (i = 0; i < MAP__NR_TYPES; ++i) - dso->symbols[i] = dso->symbol_names[i] = RB_ROOT; - dso->cache = RB_ROOT; - dso->symtab_type = DSO_BINARY_TYPE__NOT_FOUND; - dso->data_type = DSO_BINARY_TYPE__NOT_FOUND; - dso->loaded = 0; - dso->sorted_by_name = 0; - dso->has_build_id = 0; - dso->kernel = DSO_TYPE_USER; - dso->needs_swap = DSO_SWAP__UNSET; - INIT_LIST_HEAD(&dso->node); - } - - return dso; -} - -static void symbols__delete(struct rb_root *symbols) +void symbols__delete(struct rb_root *symbols) { struct symbol *pos; struct rb_node *next = rb_first(symbols); @@ -360,25 +274,6 @@ static void symbols__delete(struct rb_root *symbols) } } -void dso__delete(struct dso *dso) -{ - int i; - for (i = 0; i < MAP__NR_TYPES; ++i) - symbols__delete(&dso->symbols[i]); - if (dso->sname_alloc) - free((char *)dso->short_name); - if (dso->lname_alloc) - free(dso->long_name); - dso_cache__free(&dso->cache); - free(dso); -} - -void dso__set_build_id(struct dso *dso, void *build_id) -{ - memcpy(dso->build_id, build_id, sizeof(dso->build_id)); - dso->has_build_id = 1; -} - void symbols__insert(struct rb_root *symbols, struct symbol *sym) { struct rb_node **p = &symbols->rb_node; @@ -504,29 +399,6 @@ void dso__sort_by_name(struct dso *dso, enum map_type type) &dso->symbols[type]); } -int build_id__sprintf(const u8 *build_id, int len, char *bf) -{ - char *bid = bf; - const u8 *raw = build_id; - int i; - - for (i = 0; i < len; ++i) { - sprintf(bid, "%02x", *raw); - ++raw; - bid += 2; - } - - return raw - build_id; -} - -size_t dso__fprintf_buildid(struct dso *dso, FILE *fp) -{ - char sbuild_id[BUILD_ID_SIZE * 2 + 1]; - - build_id__sprintf(dso->build_id, sizeof(dso->build_id), sbuild_id); - return fprintf(fp, "%s", sbuild_id); -} - size_t dso__fprintf_symbols_by_name(struct dso *dso, enum map_type type, FILE *fp) { @@ -542,25 +414,6 @@ size_t dso__fprintf_symbols_by_name(struct dso *dso, return ret; } -size_t dso__fprintf(struct dso *dso, enum map_type type, FILE *fp) -{ - struct rb_node *nd; - size_t ret = fprintf(fp, "dso: %s (", dso->short_name); - - if (dso->short_name != dso->long_name) - ret += fprintf(fp, "%s, ", dso->long_name); - ret += fprintf(fp, "%s, %sloaded, ", map_type__name[type], - dso->loaded ? "" : "NOT "); - ret += dso__fprintf_buildid(dso, fp); - ret += fprintf(fp, ")\n"); - for (nd = rb_first(&dso->symbols[type]); nd; nd = rb_next(nd)) { - struct symbol *pos = rb_entry(nd, struct symbol, rb_node); - ret += symbol__fprintf(pos, fp); - } - - return ret; -} - int kallsyms__parse(const char *filename, void *arg, int (*process_symbol)(void *arg, const char *name, char type, u64 start)) @@ -792,8 +645,8 @@ discard_symbol: rb_erase(&pos->rb_node, root); return count + moved; } -static bool symbol__restricted_filename(const char *filename, - const char *restricted_filename) +bool symbol__restricted_filename(const char *filename, + const char *restricted_filename) { bool restricted = false; @@ -892,136 +745,6 @@ out_failure: return -1; } -bool dso__build_id_equal(const struct dso *dso, u8 *build_id) -{ - return memcmp(dso->build_id, build_id, sizeof(dso->build_id)) == 0; -} - -bool __dsos__read_build_ids(struct list_head *head, bool with_hits) -{ - bool have_build_id = false; - struct dso *pos; - - list_for_each_entry(pos, head, node) { - if (with_hits && !pos->hit) - continue; - if (pos->has_build_id) { - have_build_id = true; - continue; - } - if (filename__read_build_id(pos->long_name, pos->build_id, - sizeof(pos->build_id)) > 0) { - have_build_id = true; - pos->has_build_id = true; - } - } - - return have_build_id; -} - -char dso__symtab_origin(const struct dso *dso) -{ - static const char origin[] = { - [DSO_BINARY_TYPE__KALLSYMS] = 'k', - [DSO_BINARY_TYPE__VMLINUX] = 'v', - [DSO_BINARY_TYPE__JAVA_JIT] = 'j', - [DSO_BINARY_TYPE__DEBUGLINK] = 'l', - [DSO_BINARY_TYPE__BUILD_ID_CACHE] = 'B', - [DSO_BINARY_TYPE__FEDORA_DEBUGINFO] = 'f', - [DSO_BINARY_TYPE__UBUNTU_DEBUGINFO] = 'u', - [DSO_BINARY_TYPE__BUILDID_DEBUGINFO] = 'b', - [DSO_BINARY_TYPE__SYSTEM_PATH_DSO] = 'd', - [DSO_BINARY_TYPE__SYSTEM_PATH_KMODULE] = 'K', - [DSO_BINARY_TYPE__GUEST_KALLSYMS] = 'g', - [DSO_BINARY_TYPE__GUEST_KMODULE] = 'G', - [DSO_BINARY_TYPE__GUEST_VMLINUX] = 'V', - }; - - if (dso == NULL || dso->symtab_type == DSO_BINARY_TYPE__NOT_FOUND) - return '!'; - return origin[dso->symtab_type]; -} - -int dso__binary_type_file(struct dso *dso, enum dso_binary_type type, - char *root_dir, char *file, size_t size) -{ - char build_id_hex[BUILD_ID_SIZE * 2 + 1]; - int ret = 0; - - switch (type) { - case DSO_BINARY_TYPE__DEBUGLINK: { - char *debuglink; - - strncpy(file, dso->long_name, size); - debuglink = file + dso->long_name_len; - while (debuglink != file && *debuglink != '/') - debuglink--; - if (*debuglink == '/') - debuglink++; - filename__read_debuglink(dso->long_name, debuglink, - size - (debuglink - file)); - } - break; - case DSO_BINARY_TYPE__BUILD_ID_CACHE: - /* skip the locally configured cache if a symfs is given */ - if (symbol_conf.symfs[0] || - (dso__build_id_filename(dso, file, size) == NULL)) - ret = -1; - break; - - case DSO_BINARY_TYPE__FEDORA_DEBUGINFO: - snprintf(file, size, "%s/usr/lib/debug%s.debug", - symbol_conf.symfs, dso->long_name); - break; - - case DSO_BINARY_TYPE__UBUNTU_DEBUGINFO: - snprintf(file, size, "%s/usr/lib/debug%s", - symbol_conf.symfs, dso->long_name); - break; - - case DSO_BINARY_TYPE__BUILDID_DEBUGINFO: - if (!dso->has_build_id) { - ret = -1; - break; - } - - build_id__sprintf(dso->build_id, - sizeof(dso->build_id), - build_id_hex); - snprintf(file, size, - "%s/usr/lib/debug/.build-id/%.2s/%s.debug", - symbol_conf.symfs, build_id_hex, build_id_hex + 2); - break; - - case DSO_BINARY_TYPE__SYSTEM_PATH_DSO: - snprintf(file, size, "%s%s", - symbol_conf.symfs, dso->long_name); - break; - - case DSO_BINARY_TYPE__GUEST_KMODULE: - snprintf(file, size, "%s%s%s", symbol_conf.symfs, - root_dir, dso->long_name); - break; - - case DSO_BINARY_TYPE__SYSTEM_PATH_KMODULE: - snprintf(file, size, "%s%s", symbol_conf.symfs, - dso->long_name); - break; - - default: - case DSO_BINARY_TYPE__KALLSYMS: - case DSO_BINARY_TYPE__VMLINUX: - case DSO_BINARY_TYPE__GUEST_KALLSYMS: - case DSO_BINARY_TYPE__GUEST_VMLINUX: - case DSO_BINARY_TYPE__JAVA_JIT: - case DSO_BINARY_TYPE__NOT_FOUND: - ret = -1; - break; - } - - return ret; -} - int dso__load(struct dso *dso, struct map *map, symbol_filter_t filter) { char *name; @@ -1045,10 +768,6 @@ int dso__load(struct dso *dso, struct map *map, symbol_filter_t filter) else machine = NULL; - name = malloc(PATH_MAX); - if (!name) - return -1; - dso->adjust_symbols = 0; if (strncmp(dso->name, "/tmp/perf-", 10) == 0) { @@ -1072,6 +791,10 @@ int dso__load(struct dso *dso, struct map *map, symbol_filter_t filter) if (machine) root_dir = machine->root_dir; + name = malloc(PATH_MAX); + if (!name) + return -1; + /* Iterate over candidate debug images. * Keep track of "interesting" ones (those which have a symtab, dynsym, * and/or opd section) for processing. @@ -1157,221 +880,6 @@ struct map *map_groups__find_by_name(struct map_groups *mg, return NULL; } -static int dso__kernel_module_get_build_id(struct dso *dso, - const char *root_dir) -{ - char filename[PATH_MAX]; - /* - * kernel module short names are of the form "[module]" and - * we need just "module" here. - */ - const char *name = dso->short_name + 1; - - snprintf(filename, sizeof(filename), - "%s/sys/module/%.*s/notes/.note.gnu.build-id", - root_dir, (int)strlen(name) - 1, name); - - if (sysfs__read_build_id(filename, dso->build_id, - sizeof(dso->build_id)) == 0) - dso->has_build_id = true; - - return 0; -} - -static int map_groups__set_modules_path_dir(struct map_groups *mg, - const char *dir_name) -{ - struct dirent *dent; - DIR *dir = opendir(dir_name); - int ret = 0; - - if (!dir) { - pr_debug("%s: cannot open %s dir\n", __func__, dir_name); - return -1; - } - - while ((dent = readdir(dir)) != NULL) { - char path[PATH_MAX]; - struct stat st; - - /*sshfs might return bad dent->d_type, so we have to stat*/ - snprintf(path, sizeof(path), "%s/%s", dir_name, dent->d_name); - if (stat(path, &st)) - continue; - - if (S_ISDIR(st.st_mode)) { - if (!strcmp(dent->d_name, ".") || - !strcmp(dent->d_name, "..")) - continue; - - ret = map_groups__set_modules_path_dir(mg, path); - if (ret < 0) - goto out; - } else { - char *dot = strrchr(dent->d_name, '.'), - dso_name[PATH_MAX]; - struct map *map; - char *long_name; - - if (dot == NULL || strcmp(dot, ".ko")) - continue; - snprintf(dso_name, sizeof(dso_name), "[%.*s]", - (int)(dot - dent->d_name), dent->d_name); - - strxfrchar(dso_name, '-', '_'); - map = map_groups__find_by_name(mg, MAP__FUNCTION, - dso_name); - if (map == NULL) - continue; - - long_name = strdup(path); - if (long_name == NULL) { - ret = -1; - goto out; - } - dso__set_long_name(map->dso, long_name); - map->dso->lname_alloc = 1; - dso__kernel_module_get_build_id(map->dso, ""); - } - } - -out: - closedir(dir); - return ret; -} - -static char *get_kernel_version(const char *root_dir) -{ - char version[PATH_MAX]; - FILE *file; - char *name, *tmp; - const char *prefix = "Linux version "; - - sprintf(version, "%s/proc/version", root_dir); - file = fopen(version, "r"); - if (!file) - return NULL; - - version[0] = '\0'; - tmp = fgets(version, sizeof(version), file); - fclose(file); - - name = strstr(version, prefix); - if (!name) - return NULL; - name += strlen(prefix); - tmp = strchr(name, ' '); - if (tmp) - *tmp = '\0'; - - return strdup(name); -} - -static int machine__set_modules_path(struct machine *machine) -{ - char *version; - char modules_path[PATH_MAX]; - - version = get_kernel_version(machine->root_dir); - if (!version) - return -1; - - snprintf(modules_path, sizeof(modules_path), "%s/lib/modules/%s/kernel", - machine->root_dir, version); - free(version); - - return map_groups__set_modules_path_dir(&machine->kmaps, modules_path); -} - -struct map *machine__new_module(struct machine *machine, u64 start, - const char *filename) -{ - struct map *map; - struct dso *dso = __dsos__findnew(&machine->kernel_dsos, filename); - - if (dso == NULL) - return NULL; - - map = map__new2(start, dso, MAP__FUNCTION); - if (map == NULL) - return NULL; - - if (machine__is_host(machine)) - dso->symtab_type = DSO_BINARY_TYPE__SYSTEM_PATH_KMODULE; - else - dso->symtab_type = DSO_BINARY_TYPE__GUEST_KMODULE; - map_groups__insert(&machine->kmaps, map); - return map; -} - -static int machine__create_modules(struct machine *machine) -{ - char *line = NULL; - size_t n; - FILE *file; - struct map *map; - const char *modules; - char path[PATH_MAX]; - - if (machine__is_default_guest(machine)) - modules = symbol_conf.default_guest_modules; - else { - sprintf(path, "%s/proc/modules", machine->root_dir); - modules = path; - } - - if (symbol__restricted_filename(path, "/proc/modules")) - return -1; - - file = fopen(modules, "r"); - if (file == NULL) - return -1; - - while (!feof(file)) { - char name[PATH_MAX]; - u64 start; - char *sep; - int line_len; - - line_len = getline(&line, &n, file); - if (line_len < 0) - break; - - if (!line) - goto out_failure; - - line[--line_len] = '\0'; /* \n */ - - sep = strrchr(line, 'x'); - if (sep == NULL) - continue; - - hex2u64(sep + 1, &start); - - sep = strchr(line, ' '); - if (sep == NULL) - continue; - - *sep = '\0'; - - snprintf(name, sizeof(name), "[%s]", line); - map = machine__new_module(machine, start, name); - if (map == NULL) - goto out_delete_line; - dso__kernel_module_get_build_id(map->dso, machine->root_dir); - } - - free(line); - fclose(file); - - return machine__set_modules_path(machine); - -out_delete_line: - free(line); -out_failure: - return -1; -} - int dso__load_vmlinux(struct dso *dso, struct map *map, const char *vmlinux, symbol_filter_t filter) { @@ -1415,8 +923,10 @@ int dso__load_vmlinux_path(struct dso *dso, struct map *map, filename = dso__build_id_filename(dso, NULL, 0); if (filename != NULL) { err = dso__load_vmlinux(dso, map, filename, filter); - if (err > 0) + if (err > 0) { + dso->lname_alloc = 1; goto out; + } free(filename); } @@ -1424,6 +934,7 @@ int dso__load_vmlinux_path(struct dso *dso, struct map *map, err = dso__load_vmlinux(dso, map, vmlinux_path[i], filter); if (err > 0) { dso__set_long_name(dso, strdup(vmlinux_path[i])); + dso->lname_alloc = 1; break; } } @@ -1463,6 +974,7 @@ static int dso__load_kernel_sym(struct dso *dso, struct map *map, if (err > 0) { dso__set_long_name(dso, strdup(symbol_conf.vmlinux_name)); + dso->lname_alloc = 1; goto out_fixup; } return err; @@ -1591,287 +1103,6 @@ out_try_fixup: return err; } -void dsos__add(struct list_head *head, struct dso *dso) -{ - list_add_tail(&dso->node, head); -} - -struct dso *dsos__find(struct list_head *head, const char *name) -{ - struct dso *pos; - - list_for_each_entry(pos, head, node) - if (strcmp(pos->long_name, name) == 0) - return pos; - return NULL; -} - -struct dso *__dsos__findnew(struct list_head *head, const char *name) -{ - struct dso *dso = dsos__find(head, name); - - if (!dso) { - dso = dso__new(name); - if (dso != NULL) { - dsos__add(head, dso); - dso__set_basename(dso); - } - } - - return dso; -} - -size_t __dsos__fprintf(struct list_head *head, FILE *fp) -{ - struct dso *pos; - size_t ret = 0; - - list_for_each_entry(pos, head, node) { - int i; - for (i = 0; i < MAP__NR_TYPES; ++i) - ret += dso__fprintf(pos, i, fp); - } - - return ret; -} - -size_t machines__fprintf_dsos(struct rb_root *machines, FILE *fp) -{ - struct rb_node *nd; - size_t ret = 0; - - for (nd = rb_first(machines); nd; nd = rb_next(nd)) { - struct machine *pos = rb_entry(nd, struct machine, rb_node); - ret += __dsos__fprintf(&pos->kernel_dsos, fp); - ret += __dsos__fprintf(&pos->user_dsos, fp); - } - - return ret; -} - -static size_t __dsos__fprintf_buildid(struct list_head *head, FILE *fp, - bool with_hits) -{ - struct dso *pos; - size_t ret = 0; - - list_for_each_entry(pos, head, node) { - if (with_hits && !pos->hit) - continue; - ret += dso__fprintf_buildid(pos, fp); - ret += fprintf(fp, " %s\n", pos->long_name); - } - return ret; -} - -size_t machine__fprintf_dsos_buildid(struct machine *machine, FILE *fp, - bool with_hits) -{ - return __dsos__fprintf_buildid(&machine->kernel_dsos, fp, with_hits) + - __dsos__fprintf_buildid(&machine->user_dsos, fp, with_hits); -} - -size_t machines__fprintf_dsos_buildid(struct rb_root *machines, - FILE *fp, bool with_hits) -{ - struct rb_node *nd; - size_t ret = 0; - - for (nd = rb_first(machines); nd; nd = rb_next(nd)) { - struct machine *pos = rb_entry(nd, struct machine, rb_node); - ret += machine__fprintf_dsos_buildid(pos, fp, with_hits); - } - return ret; -} - -static struct dso* -dso__kernel_findnew(struct machine *machine, const char *name, - const char *short_name, int dso_type) -{ - /* - * The kernel dso could be created by build_id processing. - */ - struct dso *dso = __dsos__findnew(&machine->kernel_dsos, name); - - /* - * We need to run this in all cases, since during the build_id - * processing we had no idea this was the kernel dso. - */ - if (dso != NULL) { - dso__set_short_name(dso, short_name); - dso->kernel = dso_type; - } - - return dso; -} - -void dso__read_running_kernel_build_id(struct dso *dso, struct machine *machine) -{ - char path[PATH_MAX]; - - if (machine__is_default_guest(machine)) - return; - sprintf(path, "%s/sys/kernel/notes", machine->root_dir); - if (sysfs__read_build_id(path, dso->build_id, - sizeof(dso->build_id)) == 0) - dso->has_build_id = true; -} - -static struct dso *machine__get_kernel(struct machine *machine) -{ - const char *vmlinux_name = NULL; - struct dso *kernel; - - if (machine__is_host(machine)) { - vmlinux_name = symbol_conf.vmlinux_name; - if (!vmlinux_name) - vmlinux_name = "[kernel.kallsyms]"; - - kernel = dso__kernel_findnew(machine, vmlinux_name, - "[kernel]", - DSO_TYPE_KERNEL); - } else { - char bf[PATH_MAX]; - - if (machine__is_default_guest(machine)) - vmlinux_name = symbol_conf.default_guest_vmlinux_name; - if (!vmlinux_name) - vmlinux_name = machine__mmap_name(machine, bf, - sizeof(bf)); - - kernel = dso__kernel_findnew(machine, vmlinux_name, - "[guest.kernel]", - DSO_TYPE_GUEST_KERNEL); - } - - if (kernel != NULL && (!kernel->has_build_id)) - dso__read_running_kernel_build_id(kernel, machine); - - return kernel; -} - -struct process_args { - u64 start; -}; - -static int symbol__in_kernel(void *arg, const char *name, - char type __maybe_unused, u64 start) -{ - struct process_args *args = arg; - - if (strchr(name, '[')) - return 0; - - args->start = start; - return 1; -} - -/* Figure out the start address of kernel map from /proc/kallsyms */ -static u64 machine__get_kernel_start_addr(struct machine *machine) -{ - const char *filename; - char path[PATH_MAX]; - struct process_args args; - - if (machine__is_host(machine)) { - filename = "/proc/kallsyms"; - } else { - if (machine__is_default_guest(machine)) - filename = (char *)symbol_conf.default_guest_kallsyms; - else { - sprintf(path, "%s/proc/kallsyms", machine->root_dir); - filename = path; - } - } - - if (symbol__restricted_filename(filename, "/proc/kallsyms")) - return 0; - - if (kallsyms__parse(filename, &args, symbol__in_kernel) <= 0) - return 0; - - return args.start; -} - -int __machine__create_kernel_maps(struct machine *machine, struct dso *kernel) -{ - enum map_type type; - u64 start = machine__get_kernel_start_addr(machine); - - for (type = 0; type < MAP__NR_TYPES; ++type) { - struct kmap *kmap; - - machine->vmlinux_maps[type] = map__new2(start, kernel, type); - if (machine->vmlinux_maps[type] == NULL) - return -1; - - machine->vmlinux_maps[type]->map_ip = - machine->vmlinux_maps[type]->unmap_ip = - identity__map_ip; - kmap = map__kmap(machine->vmlinux_maps[type]); - kmap->kmaps = &machine->kmaps; - map_groups__insert(&machine->kmaps, - machine->vmlinux_maps[type]); - } - - return 0; -} - -void machine__destroy_kernel_maps(struct machine *machine) -{ - enum map_type type; - - for (type = 0; type < MAP__NR_TYPES; ++type) { - struct kmap *kmap; - - if (machine->vmlinux_maps[type] == NULL) - continue; - - kmap = map__kmap(machine->vmlinux_maps[type]); - map_groups__remove(&machine->kmaps, - machine->vmlinux_maps[type]); - if (kmap->ref_reloc_sym) { - /* - * ref_reloc_sym is shared among all maps, so free just - * on one of them. - */ - if (type == MAP__FUNCTION) { - free((char *)kmap->ref_reloc_sym->name); - kmap->ref_reloc_sym->name = NULL; - free(kmap->ref_reloc_sym); - } - kmap->ref_reloc_sym = NULL; - } - - map__delete(machine->vmlinux_maps[type]); - machine->vmlinux_maps[type] = NULL; - } -} - -int machine__create_kernel_maps(struct machine *machine) -{ - struct dso *kernel = machine__get_kernel(machine); - - if (kernel == NULL || - __machine__create_kernel_maps(machine, kernel) < 0) - return -1; - - if (symbol_conf.use_modules && machine__create_modules(machine) < 0) { - if (machine__is_host(machine)) - pr_debug("Problems creating module maps, " - "continuing anyway...\n"); - else - pr_debug("Problems creating module maps for guest %d, " - "continuing anyway...\n", machine->pid); - } - - /* - * Now that we have all the maps created, just set the ->end of them: - */ - map_groups__fixup_end(&machine->kmaps); - return 0; -} - static void vmlinux_path__exit(void) { while (--vmlinux_path__nr_entries >= 0) { @@ -1932,25 +1163,6 @@ out_fail: return -1; } -size_t machine__fprintf_vmlinux_path(struct machine *machine, FILE *fp) -{ - int i; - size_t printed = 0; - struct dso *kdso = machine->vmlinux_maps[MAP__FUNCTION]->dso; - - if (kdso->has_build_id) { - char filename[PATH_MAX]; - if (dso__build_id_filename(kdso, filename, sizeof(filename))) - printed += fprintf(fp, "[0] %s\n", filename); - } - - for (i = 0; i < vmlinux_path__nr_entries; ++i) - printed += fprintf(fp, "[%d] %s\n", - i + kdso->has_build_id, vmlinux_path[i]); - - return printed; -} - static int setup_list(struct strlist **list, const char *list_str, const char *list_name) { @@ -2054,377 +1266,3 @@ void symbol__exit(void) symbol_conf.sym_list = symbol_conf.dso_list = symbol_conf.comm_list = NULL; symbol_conf.initialized = false; } - -int machines__create_kernel_maps(struct rb_root *machines, pid_t pid) -{ - struct machine *machine = machines__findnew(machines, pid); - - if (machine == NULL) - return -1; - - return machine__create_kernel_maps(machine); -} - -static int hex(char ch) -{ - if ((ch >= '0') && (ch <= '9')) - return ch - '0'; - if ((ch >= 'a') && (ch <= 'f')) - return ch - 'a' + 10; - if ((ch >= 'A') && (ch <= 'F')) - return ch - 'A' + 10; - return -1; -} - -/* - * While we find nice hex chars, build a long_val. - * Return number of chars processed. - */ -int hex2u64(const char *ptr, u64 *long_val) -{ - const char *p = ptr; - *long_val = 0; - - while (*p) { - const int hex_val = hex(*p); - - if (hex_val < 0) - break; - - *long_val = (*long_val << 4) | hex_val; - p++; - } - - return p - ptr; -} - -char *strxfrchar(char *s, char from, char to) -{ - char *p = s; - - while ((p = strchr(p, from)) != NULL) - *p++ = to; - - return s; -} - -int machines__create_guest_kernel_maps(struct rb_root *machines) -{ - int ret = 0; - struct dirent **namelist = NULL; - int i, items = 0; - char path[PATH_MAX]; - pid_t pid; - char *endp; - - if (symbol_conf.default_guest_vmlinux_name || - symbol_conf.default_guest_modules || - symbol_conf.default_guest_kallsyms) { - machines__create_kernel_maps(machines, DEFAULT_GUEST_KERNEL_ID); - } - - if (symbol_conf.guestmount) { - items = scandir(symbol_conf.guestmount, &namelist, NULL, NULL); - if (items <= 0) - return -ENOENT; - for (i = 0; i < items; i++) { - if (!isdigit(namelist[i]->d_name[0])) { - /* Filter out . and .. */ - continue; - } - pid = (pid_t)strtol(namelist[i]->d_name, &endp, 10); - if ((*endp != '\0') || - (endp == namelist[i]->d_name) || - (errno == ERANGE)) { - pr_debug("invalid directory (%s). Skipping.\n", - namelist[i]->d_name); - continue; - } - sprintf(path, "%s/%s/proc/kallsyms", - symbol_conf.guestmount, - namelist[i]->d_name); - ret = access(path, R_OK); - if (ret) { - pr_debug("Can't access file %s\n", path); - goto failure; - } - machines__create_kernel_maps(machines, pid); - } -failure: - free(namelist); - } - - return ret; -} - -void machines__destroy_guest_kernel_maps(struct rb_root *machines) -{ - struct rb_node *next = rb_first(machines); - - while (next) { - struct machine *pos = rb_entry(next, struct machine, rb_node); - - next = rb_next(&pos->rb_node); - rb_erase(&pos->rb_node, machines); - machine__delete(pos); - } -} - -int machine__load_kallsyms(struct machine *machine, const char *filename, - enum map_type type, symbol_filter_t filter) -{ - struct map *map = machine->vmlinux_maps[type]; - int ret = dso__load_kallsyms(map->dso, filename, map, filter); - - if (ret > 0) { - dso__set_loaded(map->dso, type); - /* - * Since /proc/kallsyms will have multiple sessions for the - * kernel, with modules between them, fixup the end of all - * sections. - */ - __map_groups__fixup_end(&machine->kmaps, type); - } - - return ret; -} - -int machine__load_vmlinux_path(struct machine *machine, enum map_type type, - symbol_filter_t filter) -{ - struct map *map = machine->vmlinux_maps[type]; - int ret = dso__load_vmlinux_path(map->dso, map, filter); - - if (ret > 0) { - dso__set_loaded(map->dso, type); - map__reloc_vmlinux(map); - } - - return ret; -} - -struct map *dso__new_map(const char *name) -{ - struct map *map = NULL; - struct dso *dso = dso__new(name); - - if (dso) - map = map__new2(0, dso, MAP__FUNCTION); - - return map; -} - -static int open_dso(struct dso *dso, struct machine *machine) -{ - char *root_dir = (char *) ""; - char *name; - int fd; - - name = malloc(PATH_MAX); - if (!name) - return -ENOMEM; - - if (machine) - root_dir = machine->root_dir; - - if (dso__binary_type_file(dso, dso->data_type, - root_dir, name, PATH_MAX)) { - free(name); - return -EINVAL; - } - - fd = open(name, O_RDONLY); - free(name); - return fd; -} - -int dso__data_fd(struct dso *dso, struct machine *machine) -{ - int i = 0; - - if (dso->data_type != DSO_BINARY_TYPE__NOT_FOUND) - return open_dso(dso, machine); - - do { - int fd; - - dso->data_type = binary_type_data[i++]; - - fd = open_dso(dso, machine); - if (fd >= 0) - return fd; - - } while (dso->data_type != DSO_BINARY_TYPE__NOT_FOUND); - - return -EINVAL; -} - -static void -dso_cache__free(struct rb_root *root) -{ - struct rb_node *next = rb_first(root); - - while (next) { - struct dso_cache *cache; - - cache = rb_entry(next, struct dso_cache, rb_node); - next = rb_next(&cache->rb_node); - rb_erase(&cache->rb_node, root); - free(cache); - } -} - -static struct dso_cache* -dso_cache__find(struct rb_root *root, u64 offset) -{ - struct rb_node **p = &root->rb_node; - struct rb_node *parent = NULL; - struct dso_cache *cache; - - while (*p != NULL) { - u64 end; - - parent = *p; - cache = rb_entry(parent, struct dso_cache, rb_node); - end = cache->offset + DSO__DATA_CACHE_SIZE; - - if (offset < cache->offset) - p = &(*p)->rb_left; - else if (offset >= end) - p = &(*p)->rb_right; - else - return cache; - } - return NULL; -} - -static void -dso_cache__insert(struct rb_root *root, struct dso_cache *new) -{ - struct rb_node **p = &root->rb_node; - struct rb_node *parent = NULL; - struct dso_cache *cache; - u64 offset = new->offset; - - while (*p != NULL) { - u64 end; - - parent = *p; - cache = rb_entry(parent, struct dso_cache, rb_node); - end = cache->offset + DSO__DATA_CACHE_SIZE; - - if (offset < cache->offset) - p = &(*p)->rb_left; - else if (offset >= end) - p = &(*p)->rb_right; - } - - rb_link_node(&new->rb_node, parent, p); - rb_insert_color(&new->rb_node, root); -} - -static ssize_t -dso_cache__memcpy(struct dso_cache *cache, u64 offset, - u8 *data, u64 size) -{ - u64 cache_offset = offset - cache->offset; - u64 cache_size = min(cache->size - cache_offset, size); - - memcpy(data, cache->data + cache_offset, cache_size); - return cache_size; -} - -static ssize_t -dso_cache__read(struct dso *dso, struct machine *machine, - u64 offset, u8 *data, ssize_t size) -{ - struct dso_cache *cache; - ssize_t ret; - int fd; - - fd = dso__data_fd(dso, machine); - if (fd < 0) - return -1; - - do { - u64 cache_offset; - - ret = -ENOMEM; - - cache = zalloc(sizeof(*cache) + DSO__DATA_CACHE_SIZE); - if (!cache) - break; - - cache_offset = offset & DSO__DATA_CACHE_MASK; - ret = -EINVAL; - - if (-1 == lseek(fd, cache_offset, SEEK_SET)) - break; - - ret = read(fd, cache->data, DSO__DATA_CACHE_SIZE); - if (ret <= 0) - break; - - cache->offset = cache_offset; - cache->size = ret; - dso_cache__insert(&dso->cache, cache); - - ret = dso_cache__memcpy(cache, offset, data, size); - - } while (0); - - if (ret <= 0) - free(cache); - - close(fd); - return ret; -} - -static ssize_t dso_cache_read(struct dso *dso, struct machine *machine, - u64 offset, u8 *data, ssize_t size) -{ - struct dso_cache *cache; - - cache = dso_cache__find(&dso->cache, offset); - if (cache) - return dso_cache__memcpy(cache, offset, data, size); - else - return dso_cache__read(dso, machine, offset, data, size); -} - -ssize_t dso__data_read_offset(struct dso *dso, struct machine *machine, - u64 offset, u8 *data, ssize_t size) -{ - ssize_t r = 0; - u8 *p = data; - - do { - ssize_t ret; - - ret = dso_cache_read(dso, machine, offset, p, size); - if (ret < 0) - return ret; - - /* Reached EOF, return what we have. */ - if (!ret) - break; - - BUG_ON(ret > size); - - r += ret; - p += ret; - offset += ret; - size -= ret; - - } while (size); - - return r; -} - -ssize_t dso__data_read_addr(struct dso *dso, struct map *map, - struct machine *machine, u64 addr, - u8 *data, ssize_t size) -{ - u64 offset = map->map_ip(map, addr); - return dso__data_read_offset(dso, machine, offset, data, size); -} |