-#include "event.h"
#include "symbol.h"
+#include <errno.h>
+#include <limits.h>
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
-#include "debug.h"
+#include <unistd.h>
+#include "map.h"
+
+const char *map_type__name[MAP__NR_TYPES] = {
+ [MAP__FUNCTION] = "Functions",
+ [MAP__VARIABLE] = "Variables",
+};
static inline int is_anon_memory(const char *filename)
{
self->map_ip = map__map_ip;
self->unmap_ip = map__unmap_ip;
RB_CLEAR_NODE(&self->rb_node);
+ self->groups = NULL;
}
-struct map *map__new(struct mmap_event *event, enum map_type type,
- char *cwd, int cwdlen)
+struct map *map__new(struct list_head *dsos__list, u64 start, u64 len,
+ u64 pgoff, u32 pid, char *filename,
+ enum map_type type, char *cwd, int cwdlen)
{
struct map *self = malloc(sizeof(*self));
if (self != NULL) {
- const char *filename = event->filename;
char newfilename[PATH_MAX];
struct dso *dso;
int anon;
anon = is_anon_memory(filename);
if (anon) {
- snprintf(newfilename, sizeof(newfilename), "/tmp/perf-%d.map", event->pid);
+ snprintf(newfilename, sizeof(newfilename), "/tmp/perf-%d.map", pid);
filename = newfilename;
}
- dso = dsos__findnew(filename);
+ dso = __dsos__findnew(dsos__list, filename);
if (dso == NULL)
goto out_delete;
- map__init(self, type, event->start, event->start + event->len,
- event->pgoff, dso);
+ map__init(self, type, start, start + len, pgoff, dso);
- if (self->dso == vdso || anon)
+ if (anon) {
+set_identity:
self->map_ip = self->unmap_ip = identity__map_ip;
+ } else if (strcmp(filename, "[vdso]") == 0) {
+ dso__set_loaded(dso, self->type);
+ goto set_identity;
+ }
}
return self;
out_delete:
#define DSO__DELETED "(deleted)"
-int map__load(struct map *self, struct perf_session *session,
- symbol_filter_t filter)
+int map__load(struct map *self, symbol_filter_t filter)
{
const char *name = self->dso->long_name;
int nr;
if (dso__loaded(self->dso, self->type))
return 0;
- nr = dso__load(self->dso, self, session, filter);
+ nr = dso__load(self->dso, self, filter);
if (nr < 0) {
if (self->dso->has_build_id) {
char sbuild_id[BUILD_ID_SIZE * 2 + 1];
return -1;
}
+ /*
+ * Only applies to the kernel, as its symtabs aren't relative like the
+ * module ones.
+ */
+ if (self->dso->kernel)
+ map__reloc_vmlinux(self);
return 0;
}
-struct symbol *map__find_symbol(struct map *self, struct perf_session *session,
- u64 addr, symbol_filter_t filter)
+struct symbol *map__find_symbol(struct map *self, u64 addr,
+ symbol_filter_t filter)
{
- if (map__load(self, session, filter) < 0)
+ if (map__load(self, filter) < 0)
return NULL;
return dso__find_symbol(self->dso, self->type, addr);
}
struct symbol *map__find_symbol_by_name(struct map *self, const char *name,
- struct perf_session *session,
symbol_filter_t filter)
{
- if (map__load(self, session, filter) < 0)
+ if (map__load(self, filter) < 0)
return NULL;
if (!dso__sorted_by_name(self->dso, self->type))
return fprintf(fp, " %Lx-%Lx %Lx %s\n",
self->start, self->end, self->pgoff, self->dso->name);
}
+
+/*
+ * objdump wants/reports absolute IPs for ET_EXEC, and RIPs for ET_DYN.
+ * map->dso->adjust_symbols==1 for ET_EXEC-like cases.
+ */
+u64 map__rip_2objdump(struct map *map, u64 rip)
+{
+ u64 addr = map->dso->adjust_symbols ?
+ map->unmap_ip(map, rip) : /* RIP -> IP */
+ rip;
+ return addr;
+}
+
+u64 map__objdump_2ip(struct map *map, u64 addr)
+{
+ u64 ip = map->dso->adjust_symbols ?
+ addr :
+ map->unmap_ip(map, addr); /* RIP -> IP */
+ return ip;
+}
+
+void map_groups__init(struct map_groups *self)
+{
+ int i;
+ for (i = 0; i < MAP__NR_TYPES; ++i) {
+ self->maps[i] = RB_ROOT;
+ INIT_LIST_HEAD(&self->removed_maps[i]);
+ }
+ self->machine = NULL;
+}
+
+void map_groups__flush(struct map_groups *self)
+{
+ int type;
+
+ for (type = 0; type < MAP__NR_TYPES; type++) {
+ struct rb_root *root = &self->maps[type];
+ struct rb_node *next = rb_first(root);
+
+ while (next) {
+ struct map *pos = rb_entry(next, struct map, rb_node);
+ next = rb_next(&pos->rb_node);
+ rb_erase(&pos->rb_node, root);
+ /*
+ * We may have references to this map, for
+ * instance in some hist_entry instances, so
+ * just move them to a separate list.
+ */
+ list_add_tail(&pos->node, &self->removed_maps[pos->type]);
+ }
+ }
+}
+
+struct symbol *map_groups__find_symbol(struct map_groups *self,
+ enum map_type type, u64 addr,
+ struct map **mapp,
+ symbol_filter_t filter)
+{
+ struct map *map = map_groups__find(self, type, addr);
+
+ if (map != NULL) {
+ if (mapp != NULL)
+ *mapp = map;
+ return map__find_symbol(map, map->map_ip(map, addr), filter);
+ }
+
+ return NULL;
+}
+
+struct symbol *map_groups__find_symbol_by_name(struct map_groups *self,
+ enum map_type type,
+ const char *name,
+ struct map **mapp,
+ symbol_filter_t filter)
+{
+ struct rb_node *nd;
+
+ for (nd = rb_first(&self->maps[type]); nd; nd = rb_next(nd)) {
+ struct map *pos = rb_entry(nd, struct map, rb_node);
+ struct symbol *sym = map__find_symbol_by_name(pos, name, filter);
+
+ if (sym == NULL)
+ continue;
+ if (mapp != NULL)
+ *mapp = pos;
+ return sym;
+ }
+
+ return NULL;
+}
+
+size_t __map_groups__fprintf_maps(struct map_groups *self,
+ enum map_type type, int verbose, FILE *fp)
+{
+ size_t printed = fprintf(fp, "%s:\n", map_type__name[type]);
+ struct rb_node *nd;
+
+ for (nd = rb_first(&self->maps[type]); 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 > 2) {
+ printed += dso__fprintf(pos->dso, type, fp);
+ printed += fprintf(fp, "--\n");
+ }
+ }
+
+ return printed;
+}
+
+size_t map_groups__fprintf_maps(struct map_groups *self, int verbose, FILE *fp)
+{
+ size_t printed = 0, i;
+ for (i = 0; i < MAP__NR_TYPES; ++i)
+ printed += __map_groups__fprintf_maps(self, i, verbose, fp);
+ return printed;
+}
+
+static size_t __map_groups__fprintf_removed_maps(struct map_groups *self,
+ enum map_type type,
+ int verbose, FILE *fp)
+{
+ struct map *pos;
+ size_t printed = 0;
+
+ list_for_each_entry(pos, &self->removed_maps[type], node) {
+ printed += fprintf(fp, "Map:");
+ printed += map__fprintf(pos, fp);
+ if (verbose > 1) {
+ printed += dso__fprintf(pos->dso, type, fp);
+ printed += fprintf(fp, "--\n");
+ }
+ }
+ return printed;
+}
+
+static size_t map_groups__fprintf_removed_maps(struct map_groups *self,
+ int verbose, FILE *fp)
+{
+ size_t printed = 0, i;
+ for (i = 0; i < MAP__NR_TYPES; ++i)
+ printed += __map_groups__fprintf_removed_maps(self, i, verbose, fp);
+ return printed;
+}
+
+size_t map_groups__fprintf(struct map_groups *self, int verbose, FILE *fp)
+{
+ size_t printed = map_groups__fprintf_maps(self, verbose, fp);
+ printed += fprintf(fp, "Removed maps:\n");
+ return printed + map_groups__fprintf_removed_maps(self, verbose, fp);
+}
+
+int map_groups__fixup_overlappings(struct map_groups *self, struct map *map,
+ int verbose, FILE *fp)
+{
+ struct rb_root *root = &self->maps[map->type];
+ struct rb_node *next = rb_first(root);
+
+ while (next) {
+ struct map *pos = rb_entry(next, struct map, rb_node);
+ next = rb_next(&pos->rb_node);
+
+ if (!map__overlap(pos, map))
+ continue;
+
+ if (verbose >= 2) {
+ fputs("overlapping maps:\n", fp);
+ map__fprintf(map, fp);
+ map__fprintf(pos, fp);
+ }
+
+ rb_erase(&pos->rb_node, root);
+ /*
+ * We may have references to this map, for instance in some
+ * hist_entry instances, so just move them to a separate
+ * list.
+ */
+ list_add_tail(&pos->node, &self->removed_maps[map->type]);
+ /*
+ * 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)
+ return -ENOMEM;
+
+ before->end = map->start - 1;
+ map_groups__insert(self, before);
+ if (verbose >= 2)
+ map__fprintf(before, fp);
+ }
+
+ if (map->end < pos->end) {
+ struct map *after = map__clone(pos);
+
+ if (after == NULL)
+ return -ENOMEM;
+
+ after->start = map->end + 1;
+ map_groups__insert(self, after);
+ if (verbose >= 2)
+ map__fprintf(after, fp);
+ }
+ }
+
+ return 0;
+}
+
+/*
+ * XXX This should not really _copy_ te maps, but refcount them.
+ */
+int map_groups__clone(struct map_groups *self,
+ struct map_groups *parent, enum map_type type)
+{
+ struct rb_node *nd;
+ for (nd = rb_first(&parent->maps[type]); nd; nd = rb_next(nd)) {
+ struct map *map = rb_entry(nd, struct map, rb_node);
+ struct map *new = map__clone(map);
+ if (new == NULL)
+ return -ENOMEM;
+ map_groups__insert(self, new);
+ }
+ return 0;
+}
+
+static u64 map__reloc_map_ip(struct map *map, u64 ip)
+{
+ return ip + (s64)map->pgoff;
+}
+
+static u64 map__reloc_unmap_ip(struct map *map, u64 ip)
+{
+ return ip - (s64)map->pgoff;
+}
+
+void map__reloc_vmlinux(struct map *self)
+{
+ struct kmap *kmap = map__kmap(self);
+ s64 reloc;
+
+ if (!kmap->ref_reloc_sym || !kmap->ref_reloc_sym->unrelocated_addr)
+ return;
+
+ reloc = (kmap->ref_reloc_sym->unrelocated_addr -
+ kmap->ref_reloc_sym->addr);
+
+ if (!reloc)
+ return;
+
+ self->map_ip = map__reloc_map_ip;
+ self->unmap_ip = map__reloc_unmap_ip;
+ self->pgoff = reloc;
+}
+
+void maps__insert(struct rb_root *maps, struct map *map)
+{
+ struct rb_node **p = &maps->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);
+}
+
+struct map *maps__find(struct rb_root *maps, u64 ip)
+{
+ struct rb_node **p = &maps->rb_node;
+ struct rb_node *parent = NULL;
+ 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 if (ip > m->end)
+ p = &(*p)->rb_right;
+ else
+ return m;
+ }
+
+ return NULL;
+}
+
+int machine__init(struct machine *self, const char *root_dir, pid_t pid)
+{
+ map_groups__init(&self->kmaps);
+ RB_CLEAR_NODE(&self->rb_node);
+ INIT_LIST_HEAD(&self->user_dsos);
+ INIT_LIST_HEAD(&self->kernel_dsos);
+
+ self->kmaps.machine = self;
+ self->pid = pid;
+ self->root_dir = strdup(root_dir);
+ return self->root_dir == NULL ? -ENOMEM : 0;
+}
+
+struct machine *machines__add(struct rb_root *self, pid_t pid,
+ const char *root_dir)
+{
+ struct rb_node **p = &self->rb_node;
+ struct rb_node *parent = NULL;
+ struct machine *pos, *machine = malloc(sizeof(*machine));
+
+ if (!machine)
+ return NULL;
+
+ if (machine__init(machine, root_dir, pid) != 0) {
+ free(machine);
+ return NULL;
+ }
+
+ while (*p != NULL) {
+ parent = *p;
+ pos = rb_entry(parent, struct machine, rb_node);
+ if (pid < pos->pid)
+ p = &(*p)->rb_left;
+ else
+ p = &(*p)->rb_right;
+ }
+
+ rb_link_node(&machine->rb_node, parent, p);
+ rb_insert_color(&machine->rb_node, self);
+
+ return machine;
+}
+
+struct machine *machines__find(struct rb_root *self, pid_t pid)
+{
+ struct rb_node **p = &self->rb_node;
+ struct rb_node *parent = NULL;
+ struct machine *machine;
+ struct machine *default_machine = NULL;
+
+ while (*p != NULL) {
+ parent = *p;
+ machine = rb_entry(parent, struct machine, rb_node);
+ if (pid < machine->pid)
+ p = &(*p)->rb_left;
+ else if (pid > machine->pid)
+ p = &(*p)->rb_right;
+ else
+ return machine;
+ if (!machine->pid)
+ default_machine = machine;
+ }
+
+ return default_machine;
+}
+
+/*
+ * FIXME: Why repeatedly search for this?
+ */
+struct machine *machines__find_host(struct rb_root *self)
+{
+ struct rb_node **p = &self->rb_node;
+ struct rb_node *parent = NULL;
+ struct machine *machine;
+ pid_t pid = HOST_KERNEL_ID;
+
+ while (*p != NULL) {
+ parent = *p;
+ machine = rb_entry(parent, struct machine, rb_node);
+ if (pid < machine->pid)
+ p = &(*p)->rb_left;
+ else if (pid > machine->pid)
+ p = &(*p)->rb_right;
+ else
+ return machine;
+ }
+
+ return NULL;
+}
+
+struct machine *machines__findnew(struct rb_root *self, pid_t pid)
+{
+ char path[PATH_MAX];
+ const char *root_dir;
+ struct machine *machine = machines__find(self, pid);
+
+ if (!machine || machine->pid != pid) {
+ if (pid == HOST_KERNEL_ID || pid == DEFAULT_GUEST_KERNEL_ID)
+ root_dir = "";
+ else {
+ if (!symbol_conf.guestmount)
+ goto out;
+ sprintf(path, "%s/%d", symbol_conf.guestmount, pid);
+ if (access(path, R_OK)) {
+ pr_err("Can't access file %s\n", path);
+ goto out;
+ }
+ root_dir = path;
+ }
+ machine = machines__add(self, pid, root_dir);
+ }
+
+out:
+ return machine;
+}
+
+void machines__process(struct rb_root *self, machine__process_t process, void *data)
+{
+ struct rb_node *nd;
+
+ for (nd = rb_first(self); nd; nd = rb_next(nd)) {
+ struct machine *pos = rb_entry(nd, struct machine, rb_node);
+ process(pos, data);
+ }
+}
+
+char *machine__mmap_name(struct machine *self, char *bf, size_t size)
+{
+ if (machine__is_host(self))
+ snprintf(bf, size, "[%s]", "kernel.kallsyms");
+ else if (machine__is_default_guest(self))
+ snprintf(bf, size, "[%s]", "guest.kernel.kallsyms");
+ else
+ snprintf(bf, size, "[%s.%d]", "guest.kernel.kallsyms", self->pid);
+
+ return bf;
+}
projects / linux-2.6-block.git / blobdiff