-#include "util.h"
-#include "../perf.h"
-#include "string.h"
+#define _GNU_SOURCE
+#include <ctype.h>
+#include <dirent.h>
+#include <errno.h>
+#include <libgen.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/param.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include "build-id.h"
#include "symbol.h"
-#include "thread.h"
-
-#include "debug.h"
+#include "strlist.h"
#include <libelf.h>
#include <gelf.h>
#include <limits.h>
#include <sys/utsname.h>
-enum dso_origin {
- DSO__ORIG_KERNEL = 0,
- DSO__ORIG_JAVA_JIT,
- DSO__ORIG_FEDORA,
- DSO__ORIG_UBUNTU,
- DSO__ORIG_BUILDID,
- DSO__ORIG_DSO,
- DSO__ORIG_KMODULE,
- DSO__ORIG_NOT_FOUND,
-};
+#ifndef NT_GNU_BUILD_ID
+#define NT_GNU_BUILD_ID 3
+#endif
-static void dsos__add(struct dso *dso);
-static struct dso *dsos__find(const char *name);
-static struct map *map__new2(u64 start, struct dso *dso);
-static void kernel_maps__insert(struct map *map);
+static void dsos__add(struct list_head *head, struct dso *dso);
+static struct map *map__new2(u64 start, struct dso *dso, enum map_type type);
static int dso__load_kernel_sym(struct dso *self, struct map *map,
symbol_filter_t filter);
-unsigned int symbol__priv_size;
+static int dso__load_guest_kernel_sym(struct dso *self, struct map *map,
+ symbol_filter_t filter);
+static int vmlinux_path__nr_entries;
+static char **vmlinux_path;
+
+struct symbol_conf symbol_conf = {
+ .exclude_other = true,
+ .use_modules = true,
+ .try_vmlinux_path = true,
+};
+
+bool dso__loaded(const struct dso *self, enum map_type type)
+{
+ return self->loaded & (1 << type);
+}
-static struct rb_root kernel_maps;
+bool dso__sorted_by_name(const struct dso *self, enum map_type type)
+{
+ return self->sorted_by_name & (1 << type);
+}
+
+static void dso__set_sorted_by_name(struct dso *self, enum map_type type)
+{
+ self->sorted_by_name |= (1 << type);
+}
+
+bool symbol_type__is_a(char symbol_type, enum map_type map_type)
+{
+ switch (map_type) {
+ case MAP__FUNCTION:
+ return symbol_type == 'T' || symbol_type == 'W';
+ case MAP__VARIABLE:
+ return symbol_type == 'D' || symbol_type == 'd';
+ default:
+ return false;
+ }
+}
-static void dso__fixup_sym_end(struct dso *self)
+static void symbols__fixup_end(struct rb_root *self)
{
- struct rb_node *nd, *prevnd = rb_first(&self->syms);
+ struct rb_node *nd, *prevnd = rb_first(self);
struct symbol *curr, *prev;
if (prevnd == NULL)
curr->end = roundup(curr->start, 4096);
}
-static void kernel_maps__fixup_end(void)
+static void __map_groups__fixup_end(struct map_groups *self, enum map_type type)
{
struct map *prev, *curr;
- struct rb_node *nd, *prevnd = rb_first(&kernel_maps);
+ struct rb_node *nd, *prevnd = rb_first(&self->maps[type]);
if (prevnd == NULL)
return;
curr = rb_entry(nd, struct map, rb_node);
prev->end = curr->start - 1;
}
+
+ /*
+ * We still haven't the actual symbols, so guess the
+ * last map final address.
+ */
+ curr->end = ~0UL;
+}
+
+static void map_groups__fixup_end(struct map_groups *self)
+{
+ int i;
+ for (i = 0; i < MAP__NR_TYPES; ++i)
+ __map_groups__fixup_end(self, i);
}
static struct symbol *symbol__new(u64 start, u64 len, const char *name)
{
size_t namelen = strlen(name) + 1;
- struct symbol *self = calloc(1, (symbol__priv_size +
+ struct symbol *self = calloc(1, (symbol_conf.priv_size +
sizeof(*self) + namelen));
- if (!self)
+ if (self == NULL)
return NULL;
- if (symbol__priv_size) {
- memset(self, 0, symbol__priv_size);
- self = ((void *)self) + symbol__priv_size;
- }
- self->start = start;
- self->end = len ? start + len - 1 : start;
+ if (symbol_conf.priv_size)
+ self = ((void *)self) + symbol_conf.priv_size;
- pr_debug3("%s: %s %#Lx-%#Lx\n", __func__, name, start, self->end);
+ self->start = start;
+ self->end = len ? start + len - 1 : start;
+ self->namelen = namelen - 1;
+
+ pr_debug4("%s: %s %#Lx-%#Lx\n", __func__, name, start, self->end);
memcpy(self->name, name, namelen);
return self;
}
-static void symbol__delete(struct symbol *self)
+void symbol__delete(struct symbol *self)
{
- free(((void *)self) - symbol__priv_size);
+ free(((void *)self) - symbol_conf.priv_size);
}
static size_t symbol__fprintf(struct symbol *self, FILE *fp)
self->start, self->end, self->name);
}
-static void dso__set_long_name(struct dso *self, char *name)
+void dso__set_long_name(struct dso *self, char *name)
{
+ if (name == NULL)
+ return;
self->long_name = name;
self->long_name_len = strlen(name);
}
+static void dso__set_short_name(struct dso *self, const char *name)
+{
+ if (name == NULL)
+ return;
+ self->short_name = name;
+ self->short_name_len = strlen(name);
+}
+
static void dso__set_basename(struct dso *self)
{
- self->short_name = basename(self->long_name);
+ dso__set_short_name(self, basename(self->long_name));
}
struct dso *dso__new(const char *name)
{
- struct dso *self = malloc(sizeof(*self) + strlen(name) + 1);
+ struct dso *self = calloc(1, sizeof(*self) + strlen(name) + 1);
if (self != NULL) {
+ int i;
strcpy(self->name, name);
dso__set_long_name(self, self->name);
- self->short_name = self->name;
- self->syms = RB_ROOT;
- self->find_symbol = dso__find_symbol;
+ dso__set_short_name(self, self->name);
+ for (i = 0; i < MAP__NR_TYPES; ++i)
+ self->symbols[i] = self->symbol_names[i] = RB_ROOT;
self->slen_calculated = 0;
self->origin = DSO__ORIG_NOT_FOUND;
self->loaded = 0;
+ self->sorted_by_name = 0;
self->has_build_id = 0;
+ self->kernel = DSO_TYPE_USER;
+ INIT_LIST_HEAD(&self->node);
}
return self;
}
-static void dso__delete_symbols(struct dso *self)
+static void symbols__delete(struct rb_root *self)
{
struct symbol *pos;
- struct rb_node *next = rb_first(&self->syms);
+ struct rb_node *next = rb_first(self);
while (next) {
pos = rb_entry(next, struct symbol, rb_node);
next = rb_next(&pos->rb_node);
- rb_erase(&pos->rb_node, &self->syms);
+ rb_erase(&pos->rb_node, self);
symbol__delete(pos);
}
}
void dso__delete(struct dso *self)
{
- dso__delete_symbols(self);
+ int i;
+ for (i = 0; i < MAP__NR_TYPES; ++i)
+ symbols__delete(&self->symbols[i]);
if (self->long_name != self->name)
free(self->long_name);
free(self);
self->has_build_id = 1;
}
-static void dso__insert_symbol(struct dso *self, struct symbol *sym)
+static void symbols__insert(struct rb_root *self, struct symbol *sym)
{
- struct rb_node **p = &self->syms.rb_node;
+ struct rb_node **p = &self->rb_node;
struct rb_node *parent = NULL;
const u64 ip = sym->start;
struct symbol *s;
p = &(*p)->rb_right;
}
rb_link_node(&sym->rb_node, parent, p);
- rb_insert_color(&sym->rb_node, &self->syms);
+ rb_insert_color(&sym->rb_node, self);
}
-struct symbol *dso__find_symbol(struct dso *self, u64 ip)
+static struct symbol *symbols__find(struct rb_root *self, u64 ip)
{
struct rb_node *n;
if (self == NULL)
return NULL;
- n = self->syms.rb_node;
+ n = self->rb_node;
while (n) {
struct symbol *s = rb_entry(n, struct symbol, rb_node);
return NULL;
}
-int build_id__sprintf(u8 *self, int len, char *bf)
+struct symbol_name_rb_node {
+ struct rb_node rb_node;
+ struct symbol sym;
+};
+
+static void symbols__insert_by_name(struct rb_root *self, struct symbol *sym)
+{
+ struct rb_node **p = &self->rb_node;
+ struct rb_node *parent = NULL;
+ struct symbol_name_rb_node *symn = ((void *)sym) - sizeof(*parent), *s;
+
+ while (*p != NULL) {
+ parent = *p;
+ s = rb_entry(parent, struct symbol_name_rb_node, rb_node);
+ if (strcmp(sym->name, s->sym.name) < 0)
+ p = &(*p)->rb_left;
+ else
+ p = &(*p)->rb_right;
+ }
+ rb_link_node(&symn->rb_node, parent, p);
+ rb_insert_color(&symn->rb_node, self);
+}
+
+static void symbols__sort_by_name(struct rb_root *self, struct rb_root *source)
+{
+ struct rb_node *nd;
+
+ for (nd = rb_first(source); nd; nd = rb_next(nd)) {
+ struct symbol *pos = rb_entry(nd, struct symbol, rb_node);
+ symbols__insert_by_name(self, pos);
+ }
+}
+
+static struct symbol *symbols__find_by_name(struct rb_root *self, const char *name)
+{
+ struct rb_node *n;
+
+ if (self == NULL)
+ return NULL;
+
+ n = self->rb_node;
+
+ while (n) {
+ struct symbol_name_rb_node *s;
+ int cmp;
+
+ s = rb_entry(n, struct symbol_name_rb_node, rb_node);
+ cmp = strcmp(name, s->sym.name);
+
+ if (cmp < 0)
+ n = n->rb_left;
+ else if (cmp > 0)
+ n = n->rb_right;
+ else
+ return &s->sym;
+ }
+
+ return NULL;
+}
+
+struct symbol *dso__find_symbol(struct dso *self,
+ enum map_type type, u64 addr)
+{
+ return symbols__find(&self->symbols[type], addr);
+}
+
+struct symbol *dso__find_symbol_by_name(struct dso *self, enum map_type type,
+ const char *name)
+{
+ return symbols__find_by_name(&self->symbol_names[type], name);
+}
+
+void dso__sort_by_name(struct dso *self, enum map_type type)
+{
+ dso__set_sorted_by_name(self, type);
+ return symbols__sort_by_name(&self->symbol_names[type],
+ &self->symbols[type]);
+}
+
+int build_id__sprintf(const u8 *self, int len, char *bf)
{
char *bid = bf;
- u8 *raw = self;
+ const u8 *raw = self;
int i;
for (i = 0; i < len; ++i) {
return fprintf(fp, "%s", sbuild_id);
}
-size_t dso__fprintf(struct dso *self, FILE *fp)
+size_t dso__fprintf(struct dso *self, enum map_type type, FILE *fp)
{
struct rb_node *nd;
size_t ret = fprintf(fp, "dso: %s (", self->short_name);
+ if (self->short_name != self->long_name)
+ ret += fprintf(fp, "%s, ", self->long_name);
+ ret += fprintf(fp, "%s, %sloaded, ", map_type__name[type],
+ self->loaded ? "" : "NOT ");
ret += dso__fprintf_buildid(self, fp);
ret += fprintf(fp, ")\n");
-
- for (nd = rb_first(&self->syms); nd; nd = rb_next(nd)) {
+ for (nd = rb_first(&self->symbols[type]); nd; nd = rb_next(nd)) {
struct symbol *pos = rb_entry(nd, struct symbol, rb_node);
ret += symbol__fprintf(pos, fp);
}
return ret;
}
-/*
- * Loads the function entries in /proc/kallsyms into kernel_map->dso,
- * so that we can in the next step set the symbol ->end address and then
- * call kernel_maps__split_kallsyms.
- */
-static int kernel_maps__load_all_kallsyms(void)
+int kallsyms__parse(const char *filename, void *arg,
+ int (*process_symbol)(void *arg, const char *name,
+ char type, u64 start))
{
char *line = NULL;
size_t n;
- FILE *file = fopen("/proc/kallsyms", "r");
+ int err = 0;
+ FILE *file = fopen(filename, "r");
if (file == NULL)
goto out_failure;
while (!feof(file)) {
u64 start;
- struct symbol *sym;
int line_len, len;
char symbol_type;
char *symbol_name;
line_len = getline(&line, &n, file);
- if (line_len < 0)
+ if (line_len < 0 || !line)
break;
- if (!line)
- goto out_failure;
-
line[--line_len] = '\0'; /* \n */
len = hex2u64(line, &start);
continue;
symbol_type = toupper(line[len]);
- /*
- * We're interested only in code ('T'ext)
- */
- if (symbol_type != 'T' && symbol_type != 'W')
- continue;
-
symbol_name = line + len + 2;
- /*
- * Will fix up the end later, when we have all symbols sorted.
- */
- sym = symbol__new(start, 0, symbol_name);
-
- if (sym == NULL)
- goto out_delete_line;
- /*
- * We will pass the symbols to the filter later, in
- * kernel_maps__split_kallsyms, when we have split the
- * maps per module
- */
- dso__insert_symbol(kernel_map->dso, sym);
+ err = process_symbol(arg, symbol_name, symbol_type, start);
+ if (err)
+ break;
}
free(line);
fclose(file);
+ return err;
- return 0;
-
-out_delete_line:
- free(line);
out_failure:
return -1;
}
+struct process_kallsyms_args {
+ struct map *map;
+ struct dso *dso;
+};
+
+static int map__process_kallsym_symbol(void *arg, const char *name,
+ char type, u64 start)
+{
+ struct symbol *sym;
+ struct process_kallsyms_args *a = arg;
+ struct rb_root *root = &a->dso->symbols[a->map->type];
+
+ if (!symbol_type__is_a(type, a->map->type))
+ return 0;
+
+ /*
+ * Will fix up the end later, when we have all symbols sorted.
+ */
+ sym = symbol__new(start, 0, name);
+
+ if (sym == NULL)
+ return -ENOMEM;
+ /*
+ * We will pass the symbols to the filter later, in
+ * map__split_kallsyms, when we have split the maps per module
+ */
+ symbols__insert(root, sym);
+
+ return 0;
+}
+
+/*
+ * Loads the function entries in /proc/kallsyms into kernel_map->dso,
+ * so that we can in the next step set the symbol ->end address and then
+ * call kernel_maps__split_kallsyms.
+ */
+static int dso__load_all_kallsyms(struct dso *self, const char *filename,
+ struct map *map)
+{
+ struct process_kallsyms_args args = { .map = map, .dso = self, };
+ return kallsyms__parse(filename, &args, map__process_kallsym_symbol);
+}
+
/*
* Split the symbols into maps, making sure there are no overlaps, i.e. the
* kernel range is broken in several maps, named [kernel].N, as we don't have
* the original ELF section names vmlinux have.
*/
-static int kernel_maps__split_kallsyms(symbol_filter_t filter)
+static int dso__split_kallsyms(struct dso *self, struct map *map,
+ symbol_filter_t filter)
{
- struct map *map = kernel_map;
+ struct map_groups *kmaps = map__kmap(map)->kmaps;
+ struct machine *machine = kmaps->machine;
+ struct map *curr_map = map;
struct symbol *pos;
int count = 0;
- struct rb_node *next = rb_first(&kernel_map->dso->syms);
+ struct rb_root *root = &self->symbols[map->type];
+ struct rb_node *next = rb_first(root);
int kernel_range = 0;
while (next) {
module = strchr(pos->name, '\t');
if (module) {
+ if (!symbol_conf.use_modules)
+ goto discard_symbol;
+
*module++ = '\0';
- if (strcmp(map->dso->name, module)) {
- map = kernel_maps__find_by_dso_name(module);
- if (!map) {
- pr_err("/proc/{kallsyms,modules} "
- "inconsistency!\n");
- return -1;
+ if (strcmp(curr_map->dso->short_name, module)) {
+ if (curr_map != map &&
+ self->kernel == DSO_TYPE_GUEST_KERNEL &&
+ machine__is_default_guest(machine)) {
+ /*
+ * We assume all symbols of a module are
+ * continuous in * kallsyms, so curr_map
+ * points to a module and all its
+ * symbols are in its kmap. Mark it as
+ * loaded.
+ */
+ dso__set_loaded(curr_map->dso,
+ curr_map->type);
}
+
+ curr_map = map_groups__find_by_name(kmaps,
+ map->type, module);
+ if (curr_map == NULL) {
+ pr_debug("%s/proc/{kallsyms,modules} "
+ "inconsistency while looking "
+ "for \"%s\" module!\n",
+ machine->root_dir, module);
+ curr_map = map;
+ goto discard_symbol;
+ }
+
+ if (curr_map->dso->loaded &&
+ !machine__is_default_guest(machine))
+ goto discard_symbol;
}
/*
* So that we look just like we get from .ko files,
* i.e. not prelinked, relative to map->start.
*/
- pos->start = map->map_ip(map, pos->start);
- pos->end = map->map_ip(map, pos->end);
- } else if (map != kernel_map) {
+ pos->start = curr_map->map_ip(curr_map, pos->start);
+ pos->end = curr_map->map_ip(curr_map, pos->end);
+ } else if (curr_map != map) {
char dso_name[PATH_MAX];
struct dso *dso;
- snprintf(dso_name, sizeof(dso_name), "[kernel].%d",
- kernel_range++);
+ if (self->kernel == DSO_TYPE_GUEST_KERNEL)
+ snprintf(dso_name, sizeof(dso_name),
+ "[guest.kernel].%d",
+ kernel_range++);
+ else
+ snprintf(dso_name, sizeof(dso_name),
+ "[kernel].%d",
+ kernel_range++);
dso = dso__new(dso_name);
if (dso == NULL)
return -1;
- map = map__new2(pos->start, dso);
- if (map == NULL) {
+ dso->kernel = self->kernel;
+
+ curr_map = map__new2(pos->start, dso, map->type);
+ if (curr_map == NULL) {
dso__delete(dso);
return -1;
}
- map->map_ip = map->unmap_ip = identity__map_ip;
- kernel_maps__insert(map);
+ curr_map->map_ip = curr_map->unmap_ip = identity__map_ip;
+ map_groups__insert(kmaps, curr_map);
++kernel_range;
}
- if (filter && filter(map, pos)) {
- rb_erase(&pos->rb_node, &kernel_map->dso->syms);
+ if (filter && filter(curr_map, pos)) {
+discard_symbol: rb_erase(&pos->rb_node, root);
symbol__delete(pos);
} else {
- if (map != kernel_map) {
- rb_erase(&pos->rb_node, &kernel_map->dso->syms);
- dso__insert_symbol(map->dso, pos);
+ if (curr_map != map) {
+ rb_erase(&pos->rb_node, root);
+ symbols__insert(&curr_map->dso->symbols[curr_map->type], pos);
}
count++;
}
}
+ if (curr_map != map &&
+ self->kernel == DSO_TYPE_GUEST_KERNEL &&
+ machine__is_default_guest(kmaps->machine)) {
+ dso__set_loaded(curr_map->dso, curr_map->type);
+ }
+
return count;
}
-
-static int kernel_maps__load_kallsyms(symbol_filter_t filter)
+int dso__load_kallsyms(struct dso *self, const char *filename,
+ struct map *map, symbol_filter_t filter)
{
- if (kernel_maps__load_all_kallsyms())
+ if (dso__load_all_kallsyms(self, filename, map) < 0)
return -1;
- dso__fixup_sym_end(kernel_map->dso);
- kernel_map->dso->origin = DSO__ORIG_KERNEL;
+ symbols__fixup_end(&self->symbols[map->type]);
+ if (self->kernel == DSO_TYPE_GUEST_KERNEL)
+ self->origin = DSO__ORIG_GUEST_KERNEL;
+ else
+ self->origin = DSO__ORIG_KERNEL;
- return kernel_maps__split_kallsyms(filter);
-}
-
-size_t kernel_maps__fprintf(FILE *fp)
-{
- size_t printed = fprintf(fp, "Kernel maps:\n");
- struct rb_node *nd;
-
- for (nd = rb_first(&kernel_maps); nd; nd = rb_next(nd)) {
- struct map *pos = rb_entry(nd, struct map, rb_node);
-
- printed += fprintf(fp, "Map:");
- printed += map__fprintf(pos, fp);
- if (verbose > 1) {
- printed += dso__fprintf(pos->dso, fp);
- printed += fprintf(fp, "--\n");
- }
- }
-
- return printed + fprintf(fp, "END kernel maps\n");
+ return dso__split_kallsyms(self, map, filter);
}
static int dso__load_perf_map(struct dso *self, struct map *map,
if (filter && filter(map, sym))
symbol__delete(sym);
else {
- dso__insert_symbol(self, sym);
+ symbols__insert(&self->symbols[map->type], sym);
nr_syms++;
}
}
sym->st_shndx != SHN_UNDEF;
}
+static inline bool elf_sym__is_object(const GElf_Sym *sym)
+{
+ return elf_sym__type(sym) == STT_OBJECT &&
+ sym->st_name != 0 &&
+ sym->st_shndx != SHN_UNDEF;
+}
+
static inline int elf_sym__is_label(const GElf_Sym *sym)
{
return elf_sym__type(sym) == STT_NOTYPE &&
return strstr(elf_sec__name(shdr, secstrs), "text") != NULL;
}
+static inline bool elf_sec__is_data(const GElf_Shdr *shdr,
+ const Elf_Data *secstrs)
+{
+ return strstr(elf_sec__name(shdr, secstrs), "data") != NULL;
+}
+
static inline const char *elf_sym__name(const GElf_Sym *sym,
const Elf_Data *symstrs)
{
if (filter && filter(map, f))
symbol__delete(f);
else {
- dso__insert_symbol(self, f);
+ symbols__insert(&self->symbols[map->type], f);
++nr;
}
}
if (filter && filter(map, f))
symbol__delete(f);
else {
- dso__insert_symbol(self, f);
+ symbols__insert(&self->symbols[map->type], f);
++nr;
}
}
if (err == 0)
return nr;
out:
- pr_warning("%s: problems reading %s PLT info.\n",
- __func__, self->long_name);
+ pr_debug("%s: problems reading %s PLT info.\n",
+ __func__, self->long_name);
return 0;
}
+static bool elf_sym__is_a(GElf_Sym *self, enum map_type type)
+{
+ switch (type) {
+ case MAP__FUNCTION:
+ return elf_sym__is_function(self);
+ case MAP__VARIABLE:
+ return elf_sym__is_object(self);
+ default:
+ return false;
+ }
+}
+
+static bool elf_sec__is_a(GElf_Shdr *self, Elf_Data *secstrs, enum map_type type)
+{
+ switch (type) {
+ case MAP__FUNCTION:
+ return elf_sec__is_text(self, secstrs);
+ case MAP__VARIABLE:
+ return elf_sec__is_data(self, secstrs);
+ default:
+ return false;
+ }
+}
+
static int dso__load_sym(struct dso *self, struct map *map, const char *name,
- int fd, symbol_filter_t filter, int kernel,
- int kmodule)
+ int fd, symbol_filter_t filter, int kmodule)
{
+ struct kmap *kmap = self->kernel ? map__kmap(map) : NULL;
struct map *curr_map = map;
struct dso *curr_dso = self;
- size_t dso_name_len = strlen(self->short_name);
Elf_Data *symstrs, *secstrs;
uint32_t nr_syms;
int err = -1;
nr_syms = shdr.sh_size / shdr.sh_entsize;
memset(&sym, 0, sizeof(sym));
- if (!kernel) {
+ if (self->kernel == DSO_TYPE_USER) {
self->adjust_symbols = (ehdr.e_type == ET_EXEC ||
elf_section_by_name(elf, &ehdr, &shdr,
".gnu.prelink_undo",
elf_symtab__for_each_symbol(syms, nr_syms, idx, sym) {
struct symbol *f;
- const char *elf_name;
+ const char *elf_name = elf_sym__name(&sym, symstrs);
char *demangled = NULL;
int is_label = elf_sym__is_label(&sym);
const char *section_name;
- if (!is_label && !elf_sym__is_function(&sym))
+ if (kmap && kmap->ref_reloc_sym && kmap->ref_reloc_sym->name &&
+ strcmp(elf_name, kmap->ref_reloc_sym->name) == 0)
+ kmap->ref_reloc_sym->unrelocated_addr = sym.st_value;
+
+ if (!is_label && !elf_sym__is_a(&sym, map->type))
continue;
sec = elf_getscn(elf, sym.st_shndx);
gelf_getshdr(sec, &shdr);
- if (is_label && !elf_sec__is_text(&shdr, secstrs))
+ if (is_label && !elf_sec__is_a(&shdr, secstrs, map->type))
continue;
- elf_name = elf_sym__name(&sym, symstrs);
section_name = elf_sec__name(&shdr, secstrs);
- if (kernel || kmodule) {
+ if (self->kernel != DSO_TYPE_USER || kmodule) {
char dso_name[PATH_MAX];
if (strcmp(section_name,
- curr_dso->short_name + dso_name_len) == 0)
+ (curr_dso->short_name +
+ self->short_name_len)) == 0)
goto new_symbol;
if (strcmp(section_name, ".text") == 0) {
snprintf(dso_name, sizeof(dso_name),
"%s%s", self->short_name, section_name);
- curr_map = kernel_maps__find_by_dso_name(dso_name);
+ curr_map = map_groups__find_by_name(kmap->kmaps, map->type, dso_name);
if (curr_map == NULL) {
u64 start = sym.st_value;
curr_dso = dso__new(dso_name);
if (curr_dso == NULL)
goto out_elf_end;
- curr_map = map__new2(start, curr_dso);
+ curr_dso->kernel = self->kernel;
+ curr_map = map__new2(start, curr_dso,
+ map->type);
if (curr_map == NULL) {
dso__delete(curr_dso);
goto out_elf_end;
}
curr_map->map_ip = identity__map_ip;
curr_map->unmap_ip = identity__map_ip;
- curr_dso->origin = DSO__ORIG_KERNEL;
- kernel_maps__insert(curr_map);
- dsos__add(curr_dso);
+ curr_dso->origin = self->origin;
+ map_groups__insert(kmap->kmaps, curr_map);
+ dsos__add(&self->node, curr_dso);
+ dso__set_loaded(curr_dso, map->type);
} else
curr_dso = curr_map->dso;
}
if (curr_dso->adjust_symbols) {
- pr_debug2("adjusting symbol: st_value: %Lx sh_addr: "
- "%Lx sh_offset: %Lx\n", (u64)sym.st_value,
- (u64)shdr.sh_addr, (u64)shdr.sh_offset);
+ pr_debug4("%s: adjusting symbol: st_value: %#Lx "
+ "sh_addr: %#Lx sh_offset: %#Lx\n", __func__,
+ (u64)sym.st_value, (u64)shdr.sh_addr,
+ (u64)shdr.sh_offset);
sym.st_value -= shdr.sh_addr - shdr.sh_offset;
}
/*
if (filter && filter(curr_map, f))
symbol__delete(f);
else {
- dso__insert_symbol(curr_dso, f);
+ symbols__insert(&curr_dso->symbols[curr_map->type], f);
nr++;
}
}
/*
* For misannotated, zeroed, ASM function sizes.
*/
- if (nr > 0)
- dso__fixup_sym_end(self);
+ if (nr > 0) {
+ symbols__fixup_end(&self->symbols[map->type]);
+ if (kmap) {
+ /*
+ * We need to fixup this here too because we create new
+ * maps here, for things like vsyscall sections.
+ */
+ __map_groups__fixup_end(kmap->kmaps, map->type);
+ }
+ }
err = nr;
out_elf_end:
elf_end(elf);
return memcmp(self->build_id, build_id, sizeof(self->build_id)) == 0;
}
-bool dsos__read_build_ids(void)
+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, &dsos, node)
+ 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;
}
GElf_Shdr shdr;
Elf_Data *data;
Elf_Scn *sec;
+ Elf_Kind ek;
void *ptr;
Elf *elf;
goto out_close;
}
+ ek = elf_kind(elf);
+ if (ek != ELF_K_ELF)
+ goto out_elf_end;
+
if (gelf_getehdr(elf, &ehdr) == NULL) {
pr_err("%s: cannot get elf header.\n", __func__);
goto out_elf_end;
static const char origin[] = {
[DSO__ORIG_KERNEL] = 'k',
[DSO__ORIG_JAVA_JIT] = 'j',
+ [DSO__ORIG_BUILD_ID_CACHE] = 'B',
[DSO__ORIG_FEDORA] = 'f',
[DSO__ORIG_UBUNTU] = 'u',
[DSO__ORIG_BUILDID] = 'b',
[DSO__ORIG_DSO] = 'd',
[DSO__ORIG_KMODULE] = 'K',
+ [DSO__ORIG_GUEST_KERNEL] = 'g',
+ [DSO__ORIG_GUEST_KMODULE] = 'G',
};
if (self == NULL || self->origin == DSO__ORIG_NOT_FOUND)
u8 build_id[BUILD_ID_SIZE];
int ret = -1;
int fd;
+ struct machine *machine;
+ const char *root_dir;
- self->loaded = 1;
+ dso__set_loaded(self, map->type);
- if (self->kernel)
+ if (self->kernel == DSO_TYPE_KERNEL)
return dso__load_kernel_sym(self, map, filter);
+ else if (self->kernel == DSO_TYPE_GUEST_KERNEL)
+ return dso__load_guest_kernel_sym(self, map, filter);
+
+ if (map->groups && map->groups->machine)
+ machine = map->groups->machine;
+ else
+ machine = NULL;
name = malloc(size);
if (!name)
return ret;
}
- self->origin = DSO__ORIG_FEDORA - 1;
-
+ self->origin = DSO__ORIG_BUILD_ID_CACHE;
+ if (dso__build_id_filename(self, name, size) != NULL)
+ goto open_file;
more:
do {
self->origin++;
if (filename__read_build_id(self->long_name, build_id,
sizeof(build_id))) {
char build_id_hex[BUILD_ID_SIZE * 2 + 1];
-
build_id__sprintf(build_id, sizeof(build_id),
build_id_hex);
snprintf(name, size,
case DSO__ORIG_DSO:
snprintf(name, size, "%s", self->long_name);
break;
+ case DSO__ORIG_GUEST_KMODULE:
+ if (map->groups && map->groups->machine)
+ root_dir = map->groups->machine->root_dir;
+ else
+ root_dir = "";
+ snprintf(name, size, "%s%s", root_dir, self->long_name);
+ break;
default:
goto out;
if (!dso__build_id_equal(self, build_id))
goto more;
}
-
+open_file:
fd = open(name, O_RDONLY);
} while (fd < 0);
- ret = dso__load_sym(self, map, name, fd, filter, 0, 0);
+ ret = dso__load_sym(self, map, name, fd, filter, 0);
close(fd);
/*
return ret;
}
-struct map *kernel_map;
-
-static void kernel_maps__insert(struct map *map)
+struct map *map_groups__find_by_name(struct map_groups *self,
+ enum map_type type, const char *name)
{
- maps__insert(&kernel_maps, map);
-}
-
-struct symbol *kernel_maps__find_symbol(u64 ip, struct map **mapp,
- symbol_filter_t filter)
-{
- struct map *map = maps__find(&kernel_maps, ip);
+ struct rb_node *nd;
- if (mapp)
- *mapp = map;
+ for (nd = rb_first(&self->maps[type]); nd; nd = rb_next(nd)) {
+ struct map *map = rb_entry(nd, struct map, rb_node);
- if (map) {
- ip = map->map_ip(map, ip);
- return map__find_symbol(map, ip, filter);
+ if (map->dso && strcmp(map->dso->short_name, name) == 0)
+ return map;
}
return NULL;
}
-struct map *kernel_maps__find_by_dso_name(const char *name)
+static int dso__kernel_module_get_build_id(struct dso *self,
+ const char *root_dir)
{
- struct rb_node *nd;
+ char filename[PATH_MAX];
+ /*
+ * kernel module short names are of the form "[module]" and
+ * we need just "module" here.
+ */
+ const char *name = self->short_name + 1;
- for (nd = rb_first(&kernel_maps); nd; nd = rb_next(nd)) {
- struct map *map = rb_entry(nd, struct map, rb_node);
+ snprintf(filename, sizeof(filename),
+ "%s/sys/module/%.*s/notes/.note.gnu.build-id",
+ root_dir, (int)strlen(name) - 1, name);
- if (map->dso && strcmp(map->dso->name, name) == 0)
- return map;
- }
+ if (sysfs__read_build_id(filename, self->build_id,
+ sizeof(self->build_id)) == 0)
+ self->has_build_id = true;
- return NULL;
+ return 0;
}
-static int dsos__set_modules_path_dir(char *dirname)
+static int map_groups__set_modules_path_dir(struct map_groups *self,
+ const char *dir_name)
{
struct dirent *dent;
- DIR *dir = opendir(dirname);
+ DIR *dir = opendir(dir_name);
if (!dir) {
- pr_err("%s: cannot open %s dir\n", __func__, dirname);
+ 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*/
+ sprintf(path, "%s/%s", dir_name, dent->d_name);
+ if (stat(path, &st))
+ continue;
- if (dent->d_type == DT_DIR) {
+ if (S_ISDIR(st.st_mode)) {
if (!strcmp(dent->d_name, ".") ||
!strcmp(dent->d_name, ".."))
continue;
snprintf(path, sizeof(path), "%s/%s",
- dirname, dent->d_name);
- if (dsos__set_modules_path_dir(path) < 0)
+ dir_name, dent->d_name);
+ if (map_groups__set_modules_path_dir(self, path) < 0)
goto failure;
} else {
char *dot = strrchr(dent->d_name, '.'),
(int)(dot - dent->d_name), dent->d_name);
strxfrchar(dso_name, '-', '_');
- map = kernel_maps__find_by_dso_name(dso_name);
+ map = map_groups__find_by_name(self, MAP__FUNCTION, dso_name);
if (map == NULL)
continue;
snprintf(path, sizeof(path), "%s/%s",
- dirname, dent->d_name);
+ dir_name, dent->d_name);
long_name = strdup(path);
if (long_name == NULL)
goto failure;
dso__set_long_name(map->dso, long_name);
+ dso__kernel_module_get_build_id(map->dso, "");
}
}
return -1;
}
-static int dsos__set_modules_path(void)
+static char *get_kernel_version(const char *root_dir)
{
- struct utsname uts;
+ 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 *self)
+{
+ char *version;
char modules_path[PATH_MAX];
- if (uname(&uts) < 0)
+ version = get_kernel_version(self->root_dir);
+ if (!version)
return -1;
- snprintf(modules_path, sizeof(modules_path), "/lib/modules/%s/kernel",
- uts.release);
+ snprintf(modules_path, sizeof(modules_path), "%s/lib/modules/%s/kernel",
+ self->root_dir, version);
+ free(version);
- return dsos__set_modules_path_dir(modules_path);
+ return map_groups__set_modules_path_dir(&self->kmaps, modules_path);
}
/*
* they are loaded) and for vmlinux, where only after we load all the
* symbols we'll know where it starts and ends.
*/
-static struct map *map__new2(u64 start, struct dso *dso)
+static struct map *map__new2(u64 start, struct dso *dso, enum map_type type)
{
- struct map *self = malloc(sizeof(*self));
-
+ struct map *self = calloc(1, (sizeof(*self) +
+ (dso->kernel ? sizeof(struct kmap) : 0)));
if (self != NULL) {
/*
* ->end will be filled after we load all the symbols
*/
- map__init(self, start, 0, 0, dso);
+ map__init(self, type, start, 0, 0, dso);
}
return self;
}
-static int kernel_maps__create_module_maps(void)
+struct map *machine__new_module(struct machine *self, u64 start,
+ const char *filename)
+{
+ struct map *map;
+ struct dso *dso = __dsos__findnew(&self->kernel_dsos, filename);
+
+ if (dso == NULL)
+ return NULL;
+
+ map = map__new2(start, dso, MAP__FUNCTION);
+ if (map == NULL)
+ return NULL;
+
+ if (machine__is_host(self))
+ dso->origin = DSO__ORIG_KMODULE;
+ else
+ dso->origin = DSO__ORIG_GUEST_KMODULE;
+ map_groups__insert(&self->kmaps, map);
+ return map;
+}
+
+static int machine__create_modules(struct machine *self)
{
char *line = NULL;
size_t n;
- FILE *file = fopen("/proc/modules", "r");
+ FILE *file;
struct map *map;
+ const char *modules;
+ char path[PATH_MAX];
+
+ if (machine__is_default_guest(self))
+ modules = symbol_conf.default_guest_modules;
+ else {
+ sprintf(path, "%s/proc/modules", self->root_dir);
+ modules = path;
+ }
+ file = fopen(modules, "r");
if (file == NULL)
return -1;
while (!feof(file)) {
char name[PATH_MAX];
u64 start;
- struct dso *dso;
char *sep;
int line_len;
*sep = '\0';
snprintf(name, sizeof(name), "[%s]", line);
- dso = dso__new(name);
-
- if (dso == NULL)
- goto out_delete_line;
-
- map = map__new2(start, dso);
- if (map == NULL) {
- dso__delete(dso);
+ map = machine__new_module(self, start, name);
+ if (map == NULL)
goto out_delete_line;
- }
-
- snprintf(name, sizeof(name),
- "/sys/module/%s/notes/.note.gnu.build-id", line);
- if (sysfs__read_build_id(name, dso->build_id,
- sizeof(dso->build_id)) == 0)
- dso->has_build_id = true;
-
- dso->origin = DSO__ORIG_KMODULE;
- kernel_maps__insert(map);
- dsos__add(dso);
+ dso__kernel_module_get_build_id(map->dso, self->root_dir);
}
free(line);
fclose(file);
- /*
- * Now that we have all sorted out, just set the ->end of all
- * maps:
- */
- kernel_maps__fixup_end();
-
- return dsos__set_modules_path();
+ return machine__set_modules_path(self);
out_delete_line:
free(line);
if (fd < 0)
return -1;
- self->loaded = 1;
- err = dso__load_sym(self, map, self->long_name, fd, filter, 1, 0);
-
+ dso__set_loaded(self, map->type);
+ err = dso__load_sym(self, map, vmlinux, fd, filter, 0);
close(fd);
+ if (err > 0)
+ pr_debug("Using %s for symbols\n", vmlinux);
+
+ return err;
+}
+
+int dso__load_vmlinux_path(struct dso *self, struct map *map,
+ symbol_filter_t filter)
+{
+ int i, err = 0;
+ char *filename;
+
+ pr_debug("Looking at the vmlinux_path (%d entries long)\n",
+ vmlinux_path__nr_entries + 1);
+
+ filename = dso__build_id_filename(self, NULL, 0);
+ if (filename != NULL) {
+ err = dso__load_vmlinux(self, map, filename, filter);
+ if (err > 0) {
+ dso__set_long_name(self, filename);
+ goto out;
+ }
+ free(filename);
+ }
+
+ for (i = 0; i < vmlinux_path__nr_entries; ++i) {
+ err = dso__load_vmlinux(self, map, vmlinux_path[i], filter);
+ if (err > 0) {
+ dso__set_long_name(self, strdup(vmlinux_path[i]));
+ break;
+ }
+ }
+out:
return err;
}
static int dso__load_kernel_sym(struct dso *self, struct map *map,
symbol_filter_t filter)
{
- int err = dso__load_vmlinux(self, map, self->name, filter);
+ int err;
+ const char *kallsyms_filename = NULL;
+ char *kallsyms_allocated_filename = NULL;
+ /*
+ * Step 1: if the user specified a vmlinux filename, use it and only
+ * it, reporting errors to the user if it cannot be used.
+ *
+ * For instance, try to analyse an ARM perf.data file _without_ a
+ * build-id, or if the user specifies the wrong path to the right
+ * vmlinux file, obviously we can't fallback to another vmlinux (a
+ * x86_86 one, on the machine where analysis is being performed, say),
+ * or worse, /proc/kallsyms.
+ *
+ * If the specified file _has_ a build-id and there is a build-id
+ * section in the perf.data file, we will still do the expected
+ * validation in dso__load_vmlinux and will bail out if they don't
+ * match.
+ */
+ if (symbol_conf.vmlinux_name != NULL) {
+ err = dso__load_vmlinux(self, map,
+ symbol_conf.vmlinux_name, filter);
+ if (err > 0) {
+ dso__set_long_name(self,
+ strdup(symbol_conf.vmlinux_name));
+ goto out_fixup;
+ }
+ return err;
+ }
+
+ if (vmlinux_path != NULL) {
+ err = dso__load_vmlinux_path(self, map, filter);
+ if (err > 0)
+ goto out_fixup;
+ }
- if (err <= 0)
- err = kernel_maps__load_kallsyms(filter);
+ /*
+ * Say the kernel DSO was created when processing the build-id header table,
+ * we have a build-id, so check if it is the same as the running kernel,
+ * using it if it is.
+ */
+ if (self->has_build_id) {
+ u8 kallsyms_build_id[BUILD_ID_SIZE];
+ char sbuild_id[BUILD_ID_SIZE * 2 + 1];
+
+ if (sysfs__read_build_id("/sys/kernel/notes", kallsyms_build_id,
+ sizeof(kallsyms_build_id)) == 0) {
+ if (dso__build_id_equal(self, kallsyms_build_id)) {
+ kallsyms_filename = "/proc/kallsyms";
+ goto do_kallsyms;
+ }
+ }
+ /*
+ * Now look if we have it on the build-id cache in
+ * $HOME/.debug/[kernel.kallsyms].
+ */
+ build_id__sprintf(self->build_id, sizeof(self->build_id),
+ sbuild_id);
+
+ if (asprintf(&kallsyms_allocated_filename,
+ "%s/.debug/[kernel.kallsyms]/%s",
+ getenv("HOME"), sbuild_id) == -1) {
+ pr_err("Not enough memory for kallsyms file lookup\n");
+ return -1;
+ }
+
+ kallsyms_filename = kallsyms_allocated_filename;
+
+ if (access(kallsyms_filename, F_OK)) {
+ pr_err("No kallsyms or vmlinux with build-id %s "
+ "was found\n", sbuild_id);
+ free(kallsyms_allocated_filename);
+ return -1;
+ }
+ } else {
+ /*
+ * Last resort, if we don't have a build-id and couldn't find
+ * any vmlinux file, try the running kernel kallsyms table.
+ */
+ kallsyms_filename = "/proc/kallsyms";
+ }
+
+do_kallsyms:
+ err = dso__load_kallsyms(self, kallsyms_filename, map, filter);
+ if (err > 0)
+ pr_debug("Using %s for symbols\n", kallsyms_filename);
+ free(kallsyms_allocated_filename);
if (err > 0) {
+out_fixup:
+ if (kallsyms_filename != NULL)
+ dso__set_long_name(self, strdup("[kernel.kallsyms]"));
map__fixup_start(map);
map__fixup_end(map);
}
return err;
}
-LIST_HEAD(dsos);
-struct dso *vdso;
+static int dso__load_guest_kernel_sym(struct dso *self, struct map *map,
+ symbol_filter_t filter)
+{
+ int err;
+ const char *kallsyms_filename = NULL;
+ struct machine *machine;
+ char path[PATH_MAX];
+
+ if (!map->groups) {
+ pr_debug("Guest kernel map hasn't the point to groups\n");
+ return -1;
+ }
+ machine = map->groups->machine;
-const char *vmlinux_name = "vmlinux";
+ if (machine__is_default_guest(machine)) {
+ /*
+ * if the user specified a vmlinux filename, use it and only
+ * it, reporting errors to the user if it cannot be used.
+ * Or use file guest_kallsyms inputted by user on commandline
+ */
+ if (symbol_conf.default_guest_vmlinux_name != NULL) {
+ err = dso__load_vmlinux(self, map,
+ symbol_conf.default_guest_vmlinux_name, filter);
+ goto out_try_fixup;
+ }
-static void dsos__add(struct dso *dso)
+ kallsyms_filename = symbol_conf.default_guest_kallsyms;
+ if (!kallsyms_filename)
+ return -1;
+ } else {
+ sprintf(path, "%s/proc/kallsyms", machine->root_dir);
+ kallsyms_filename = path;
+ }
+
+ err = dso__load_kallsyms(self, kallsyms_filename, map, filter);
+ if (err > 0)
+ pr_debug("Using %s for symbols\n", kallsyms_filename);
+
+out_try_fixup:
+ if (err > 0) {
+ if (kallsyms_filename != NULL) {
+ machine__mmap_name(machine, path, sizeof(path));
+ dso__set_long_name(self, strdup(path));
+ }
+ map__fixup_start(map);
+ map__fixup_end(map);
+ }
+
+ return err;
+}
+
+static void dsos__add(struct list_head *head, struct dso *dso)
{
- list_add_tail(&dso->node, &dsos);
+ list_add_tail(&dso->node, head);
}
-static struct dso *dsos__find(const char *name)
+static struct dso *dsos__find(struct list_head *head, const char *name)
{
struct dso *pos;
- list_for_each_entry(pos, &dsos, node)
- if (strcmp(pos->name, name) == 0)
+ list_for_each_entry(pos, head, node)
+ if (strcmp(pos->long_name, name) == 0)
return pos;
return NULL;
}
-struct dso *dsos__findnew(const char *name)
+struct dso *__dsos__findnew(struct list_head *head, const char *name)
{
- struct dso *dso = dsos__find(name);
+ struct dso *dso = dsos__find(head, name);
if (!dso) {
dso = dso__new(name);
if (dso != NULL) {
- dsos__add(dso);
+ dsos__add(head, dso);
dso__set_basename(dso);
}
}
return dso;
}
-void dsos__fprintf(FILE *fp)
+size_t __dsos__fprintf(struct list_head *head, FILE *fp)
{
struct dso *pos;
+ size_t ret = 0;
- list_for_each_entry(pos, &dsos, node)
- dso__fprintf(pos, fp);
+ 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 dsos__fprintf_buildid(FILE *fp)
+size_t machines__fprintf_dsos(struct rb_root *self, FILE *fp)
+{
+ struct rb_node *nd;
+ size_t ret = 0;
+
+ for (nd = rb_first(self); 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, &dsos, node) {
+ 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;
}
-static int kernel_maps__create_kernel_map(void)
+size_t machine__fprintf_dsos_buildid(struct machine *self, FILE *fp, bool with_hits)
{
- struct dso *kernel = dso__new(vmlinux_name);
+ return __dsos__fprintf_buildid(&self->kernel_dsos, fp, with_hits) +
+ __dsos__fprintf_buildid(&self->user_dsos, fp, with_hits);
+}
- if (kernel == NULL)
+size_t machines__fprintf_dsos_buildid(struct rb_root *self, FILE *fp, bool with_hits)
+{
+ struct rb_node *nd;
+ size_t ret = 0;
+
+ for (nd = rb_first(self); 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;
+}
+
+struct dso *dso__new_kernel(const char *name)
+{
+ struct dso *self = dso__new(name ?: "[kernel.kallsyms]");
+
+ if (self != NULL) {
+ dso__set_short_name(self, "[kernel]");
+ self->kernel = DSO_TYPE_KERNEL;
+ }
+
+ return self;
+}
+
+static struct dso *dso__new_guest_kernel(struct machine *machine,
+ const char *name)
+{
+ char bf[PATH_MAX];
+ struct dso *self = dso__new(name ?: machine__mmap_name(machine, bf, sizeof(bf)));
+
+ if (self != NULL) {
+ dso__set_short_name(self, "[guest.kernel]");
+ self->kernel = DSO_TYPE_GUEST_KERNEL;
+ }
+
+ return self;
+}
+
+void dso__read_running_kernel_build_id(struct dso *self, 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, self->build_id,
+ sizeof(self->build_id)) == 0)
+ self->has_build_id = true;
+}
+
+static struct dso *machine__create_kernel(struct machine *self)
+{
+ const char *vmlinux_name = NULL;
+ struct dso *kernel;
+
+ if (machine__is_host(self)) {
+ vmlinux_name = symbol_conf.vmlinux_name;
+ kernel = dso__new_kernel(vmlinux_name);
+ } else {
+ if (machine__is_default_guest(self))
+ vmlinux_name = symbol_conf.default_guest_vmlinux_name;
+ kernel = dso__new_guest_kernel(self, vmlinux_name);
+ }
+
+ if (kernel != NULL) {
+ dso__read_running_kernel_build_id(kernel, self);
+ dsos__add(&self->kernel_dsos, kernel);
+ }
+ return kernel;
+}
+
+int __machine__create_kernel_maps(struct machine *self, struct dso *kernel)
+{
+ enum map_type type;
+
+ for (type = 0; type < MAP__NR_TYPES; ++type) {
+ struct kmap *kmap;
+
+ self->vmlinux_maps[type] = map__new2(0, kernel, type);
+ if (self->vmlinux_maps[type] == NULL)
+ return -1;
+
+ self->vmlinux_maps[type]->map_ip =
+ self->vmlinux_maps[type]->unmap_ip = identity__map_ip;
+
+ kmap = map__kmap(self->vmlinux_maps[type]);
+ kmap->kmaps = &self->kmaps;
+ map_groups__insert(&self->kmaps, self->vmlinux_maps[type]);
+ }
+
+ return 0;
+}
+
+int machine__create_kernel_maps(struct machine *self)
+{
+ struct dso *kernel = machine__create_kernel(self);
+
+ if (kernel == NULL ||
+ __machine__create_kernel_maps(self, kernel) < 0)
return -1;
- kernel_map = map__new2(0, kernel);
- if (kernel_map == NULL)
- goto out_delete_kernel_dso;
+ if (symbol_conf.use_modules && machine__create_modules(self) < 0)
+ pr_debug("Problems creating module maps, continuing anyway...\n");
+ /*
+ * Now that we have all the maps created, just set the ->end of them:
+ */
+ map_groups__fixup_end(&self->kmaps);
+ return 0;
+}
- kernel_map->map_ip = kernel_map->unmap_ip = identity__map_ip;
+static void vmlinux_path__exit(void)
+{
+ while (--vmlinux_path__nr_entries >= 0) {
+ free(vmlinux_path[vmlinux_path__nr_entries]);
+ vmlinux_path[vmlinux_path__nr_entries] = NULL;
+ }
- kernel->short_name = "[kernel]";
- kernel->kernel = 1;
- vdso = dso__new("[vdso]");
- if (vdso == NULL)
- goto out_delete_kernel_map;
+ free(vmlinux_path);
+ vmlinux_path = NULL;
+}
- if (sysfs__read_build_id("/sys/kernel/notes", kernel->build_id,
- sizeof(kernel->build_id)) == 0)
- kernel->has_build_id = true;
+static int vmlinux_path__init(void)
+{
+ struct utsname uts;
+ char bf[PATH_MAX];
- kernel_maps__insert(kernel_map);
- dsos__add(kernel);
- dsos__add(vdso);
+ if (uname(&uts) < 0)
+ return -1;
+
+ vmlinux_path = malloc(sizeof(char *) * 5);
+ if (vmlinux_path == NULL)
+ return -1;
+
+ vmlinux_path[vmlinux_path__nr_entries] = strdup("vmlinux");
+ if (vmlinux_path[vmlinux_path__nr_entries] == NULL)
+ goto out_fail;
+ ++vmlinux_path__nr_entries;
+ vmlinux_path[vmlinux_path__nr_entries] = strdup("/boot/vmlinux");
+ if (vmlinux_path[vmlinux_path__nr_entries] == NULL)
+ goto out_fail;
+ ++vmlinux_path__nr_entries;
+ snprintf(bf, sizeof(bf), "/boot/vmlinux-%s", uts.release);
+ vmlinux_path[vmlinux_path__nr_entries] = strdup(bf);
+ if (vmlinux_path[vmlinux_path__nr_entries] == NULL)
+ goto out_fail;
+ ++vmlinux_path__nr_entries;
+ snprintf(bf, sizeof(bf), "/lib/modules/%s/build/vmlinux", uts.release);
+ vmlinux_path[vmlinux_path__nr_entries] = strdup(bf);
+ if (vmlinux_path[vmlinux_path__nr_entries] == NULL)
+ goto out_fail;
+ ++vmlinux_path__nr_entries;
+ snprintf(bf, sizeof(bf), "/usr/lib/debug/lib/modules/%s/vmlinux",
+ uts.release);
+ vmlinux_path[vmlinux_path__nr_entries] = strdup(bf);
+ if (vmlinux_path[vmlinux_path__nr_entries] == NULL)
+ goto out_fail;
+ ++vmlinux_path__nr_entries;
return 0;
-out_delete_kernel_map:
- map__delete(kernel_map);
- kernel_map = NULL;
-out_delete_kernel_dso:
- dso__delete(kernel);
+out_fail:
+ vmlinux_path__exit();
return -1;
}
-int kernel_maps__init(bool use_modules)
+size_t machine__fprintf_vmlinux_path(struct machine *self, FILE *fp)
{
- if (kernel_maps__create_kernel_map() < 0)
- return -1;
+ int i;
+ size_t printed = 0;
+ struct dso *kdso = self->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);
+ }
- if (use_modules && kernel_maps__create_module_maps() < 0)
- pr_warning("Failed to load list of modules in use, "
- "continuing...\n");
+ 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)
+{
+ if (list_str == NULL)
+ return 0;
+
+ *list = strlist__new(true, list_str);
+ if (!*list) {
+ pr_err("problems parsing %s list\n", list_name);
+ return -1;
+ }
return 0;
}
-void symbol__init(unsigned int priv_size)
+int symbol__init(void)
{
elf_version(EV_CURRENT);
- symbol__priv_size = priv_size;
+ if (symbol_conf.sort_by_name)
+ symbol_conf.priv_size += (sizeof(struct symbol_name_rb_node) -
+ sizeof(struct symbol));
+
+ if (symbol_conf.try_vmlinux_path && vmlinux_path__init() < 0)
+ return -1;
+
+ if (symbol_conf.field_sep && *symbol_conf.field_sep == '.') {
+ pr_err("'.' is the only non valid --field-separator argument\n");
+ return -1;
+ }
+
+ if (setup_list(&symbol_conf.dso_list,
+ symbol_conf.dso_list_str, "dso") < 0)
+ return -1;
+
+ if (setup_list(&symbol_conf.comm_list,
+ symbol_conf.comm_list_str, "comm") < 0)
+ goto out_free_dso_list;
+
+ if (setup_list(&symbol_conf.sym_list,
+ symbol_conf.sym_list_str, "symbol") < 0)
+ goto out_free_comm_list;
+
+ return 0;
+
+out_free_dso_list:
+ strlist__delete(symbol_conf.dso_list);
+out_free_comm_list:
+ strlist__delete(symbol_conf.comm_list);
+ return -1;
+}
+
+int machines__create_kernel_maps(struct rb_root *self, pid_t pid)
+{
+ struct machine *machine = machines__findnew(self, 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 *self)
+{
+ int ret = 0;
+ struct dirent **namelist = NULL;
+ int i, items = 0;
+ char path[PATH_MAX];
+ pid_t pid;
+
+ if (symbol_conf.default_guest_vmlinux_name ||
+ symbol_conf.default_guest_modules ||
+ symbol_conf.default_guest_kallsyms) {
+ machines__create_kernel_maps(self, 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 = atoi(namelist[i]->d_name);
+ 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(self, pid);
+ }
+failure:
+ free(namelist);
+ }
+
+ return ret;
+}
+
+int machine__load_kallsyms(struct machine *self, const char *filename,
+ enum map_type type, symbol_filter_t filter)
+{
+ struct map *map = self->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(&self->kmaps, type);
+ }
+
+ return ret;
+}
+
+int machine__load_vmlinux_path(struct machine *self, enum map_type type,
+ symbol_filter_t filter)
+{
+ struct map *map = self->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;
}
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff