1 files changed, 400 insertions, 9 deletions

diff --git a/tools/perf/util/map.c b/tools/perf/util/map.c
index e509cd59c67..e672f2fef65 100644
--- a/tools/perf/util/map.c
+++ b/tools/perf/util/map.c
@@ -1,9 +1,11 @@
-#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",
@@ -36,15 +38,16 @@ void map__init(struct map *self, enum map_type type,
         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;
@@ -62,16 +65,15 @@ struct map *map__new(struct mmap_event *event, enum map_type type,
                 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 (anon) {
 set_identity:
@@ -235,3 +237,392 @@ u64 map__objdump_2ip(struct map *map, u64 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;
+}
+
+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;
+}