perf symbols: Add a 'type' field to struct map

That way we will be able to check if the right symtab is loaded
in the underlying DSO.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <1259346563-12568-5-git-send-email-acme@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

6 files changed, 42 insertions, 21 deletions

diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index ded6cf65ad9c..a0168f260d06 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -996,7 +996,7 @@ static void event__process_mmap(event_t *self)
         struct thread *thread = threads__findnew(self->mmap.pid);
 
         if (thread != NULL) {
-                struct map *map = map__new(&self->mmap, NULL, 0);
+                struct map *map = map__new(&self->mmap, MAP__FUNCTION, NULL, 0);
                 if (map != NULL)
                         thread__insert_map(thread, map);
         }
diff --git a/tools/perf/util/event.h b/tools/perf/util/event.h
index 882a9531db97..29543bd88007 100644
--- a/tools/perf/util/event.h
+++ b/tools/perf/util/event.h
@@ -80,6 +80,10 @@ typedef union event_union {
         struct sample_event             sample;
 } event_t;
 
+enum map_type {
+        MAP__FUNCTION,
+};
+
 struct map {
         union {
                 struct rb_node  rb_node;
@@ -87,6 +91,7 @@ struct map {
         };
         u64                     start;
         u64                     end;
+        enum map_type           type;
         u64                     pgoff;
         u64                     (*map_ip)(struct map *, u64);
         u64                     (*unmap_ip)(struct map *, u64);
@@ -112,9 +117,10 @@ struct symbol;
 
 typedef int (*symbol_filter_t)(struct map *map, struct symbol *sym);
 
-void map__init(struct map *self, u64 start, u64 end, u64 pgoff,
-               struct dso *dso);
-struct map *map__new(struct mmap_event *event, char *cwd, int cwdlen);
+void map__init(struct map *self, enum map_type type,
+               u64 start, u64 end, u64 pgoff, struct dso *dso);
+struct map *map__new(struct mmap_event *event, enum map_type,
+                     char *cwd, int cwdlen);
 void map__delete(struct map *self);
 struct map *map__clone(struct map *self);
 int map__overlap(struct map *l, struct map *r);
diff --git a/tools/perf/util/map.c b/tools/perf/util/map.c
index 41c5c4a20010..52bb4c6cf74d 100644
--- a/tools/perf/util/map.c
+++ b/tools/perf/util/map.c
@@ -20,9 +20,10 @@ static int strcommon(const char *pathname, char *cwd, int cwdlen)
         return n;
 }
 
-void map__init(struct map *self, u64 start, u64 end, u64 pgoff,
-               struct dso *dso)
+void map__init(struct map *self, enum map_type type,
+               u64 start, u64 end, u64 pgoff, struct dso *dso)
 {
+        self->type     = type;
         self->start    = start;
         self->end      = end;
         self->pgoff    = pgoff;
@@ -32,7 +33,8 @@ void map__init(struct map *self, u64 start, u64 end, u64 pgoff,
         RB_CLEAR_NODE(&self->rb_node);
 }
 
-struct map *map__new(struct mmap_event *event, char *cwd, int cwdlen)
+struct map *map__new(struct mmap_event *event, enum map_type type,
+                     char *cwd, int cwdlen)
 {
         struct map *self = malloc(sizeof(*self));
 
@@ -63,7 +65,7 @@ struct map *map__new(struct mmap_event *event, char *cwd, int cwdlen)
                 if (dso == NULL)
                         goto out_delete;
 
-                map__init(self, event->start, event->start + event->len,
+                map__init(self, type, event->start, event->start + event->len,
                           event->pgoff, dso);
 
                 if (self->dso == vdso || anon)
@@ -103,7 +105,7 @@ void map__fixup_end(struct map *self, struct rb_root *symbols)
 struct symbol *map__find_function(struct map *self, u64 ip,
                                   symbol_filter_t filter)
 {
-        if (!self->dso->loaded) {
+        if (!dso__loaded(self->dso, self->type)) {
                 int nr = dso__load(self->dso, self, filter);
 
                 if (nr < 0) {
diff --git a/tools/perf/util/process_events.c b/tools/perf/util/process_events.c
index a9204363efd8..53778684641c 100644
--- a/tools/perf/util/process_events.c
+++ b/tools/perf/util/process_events.c
@@ -6,7 +6,7 @@ int	cwdlen;
 int
 process_mmap_event(event_t *event, unsigned long offset, unsigned long head)
 {
-        struct map *map = map__new(&event->mmap, cwd, cwdlen);
+        struct map *map = map__new(&event->mmap, MAP__FUNCTION, cwd, cwdlen);
         struct thread *thread = threads__findnew(event->mmap.pid);
 
         dump_printf("%p [%p]: PERF_RECORD_MMAP %d/%d: [%p(%p) @ %p]: %s\n",
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index 0b8a298d41ad..45a4a9a7618b 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -29,7 +29,7 @@ enum dso_origin {
 };
 
 static void dsos__add(struct list_head *head, struct dso *dso);
-static struct map *map__new2(u64 start, struct dso *dso);
+static struct map *map__new2(u64 start, struct dso *dso, enum map_type type);
 static void kernel_maps__insert(struct map *map);
 static int dso__load_kernel_sym(struct dso *self, struct map *map,
                                 symbol_filter_t filter);
@@ -45,6 +45,16 @@ static struct symbol_conf symbol_conf__defaults = {
 
 static struct rb_root kernel_maps__functions;
 
+bool dso__loaded(const struct dso *self, enum map_type type)
+{
+        return self->loaded & (1 << type);
+}
+
+static void dso__set_loaded(struct dso *self, enum map_type type)
+{
+        self->loaded |= (1 << type);
+}
+
 static void symbols__fixup_end(struct rb_root *self)
 {
         struct rb_node *nd, *prevnd = rb_first(self);
@@ -387,7 +397,7 @@ static int kernel_maps__split_kallsyms(symbol_filter_t filter)
                         if (dso == NULL)
                                 return -1;
 
-                        map = map__new2(pos->start, dso);
+                        map = map__new2(pos->start, dso, MAP__FUNCTION);
                         if (map == NULL) {
                                 dso__delete(dso);
                                 return -1;
@@ -846,7 +856,8 @@ static int dso__load_sym(struct dso *self, struct map *map, const char *name,
                                 curr_dso = dso__new(dso_name);
                                 if (curr_dso == NULL)
                                         goto out_elf_end;
-                                curr_map = map__new2(start, curr_dso);
+                                curr_map = map__new2(start, curr_dso,
+                                                     MAP__FUNCTION);
                                 if (curr_map == NULL) {
                                         dso__delete(curr_dso);
                                         goto out_elf_end;
@@ -1076,7 +1087,7 @@ int dso__load(struct dso *self, struct map *map, symbol_filter_t filter)
         int ret = -1;
         int fd;
 
-        self->loaded = 1;
+        dso__set_loaded(self, map->type);
 
         if (self->kernel)
                 return dso__load_kernel_sym(self, map, filter);
@@ -1275,7 +1286,7 @@ static int dsos__set_modules_path(void)
  * 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));
 
@@ -1283,7 +1294,7 @@ static struct map *map__new2(u64 start, struct dso *dso)
                 /*
                  * ->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;
@@ -1333,7 +1344,7 @@ static int kernel_maps__create_module_maps(void)
                 if (dso == NULL)
                         goto out_delete_line;
 
-                map = map__new2(start, dso);
+                map = map__new2(start, dso, MAP__FUNCTION);
                 if (map == NULL) {
                         dso__delete(dso);
                         goto out_delete_line;
@@ -1394,7 +1405,7 @@ static int dso__load_vmlinux(struct dso *self, struct map *map,
         if (fd < 0)
                 return -1;
 
-        self->loaded = 1;
+        dso__set_loaded(self, map->type);
         err = dso__load_sym(self, map, self->long_name, fd, filter, 1, 0);
 
         close(fd);
@@ -1522,7 +1533,7 @@ static int kernel_maps__create_kernel_map(const struct symbol_conf *conf)
         if (kernel == NULL)
                 return -1;
 
-        kernel_map__functions = map__new2(0, kernel);
+        kernel_map__functions = map__new2(0, kernel, MAP__FUNCTION);
         if (kernel_map__functions == NULL)
                 goto out_delete_kernel_dso;
 
@@ -1533,7 +1544,7 @@ static int kernel_maps__create_kernel_map(const struct symbol_conf *conf)
         vdso = dso__new("[vdso]");
         if (vdso == NULL)
                 goto out_delete_kernel_map;
-        vdso->loaded = 1;
+        dso__set_loaded(vdso, MAP__FUNCTION);
 
         if (sysfs__read_build_id("/sys/kernel/notes", kernel->build_id,
                                  sizeof(kernel->build_id)) == 0)
diff --git a/tools/perf/util/symbol.h b/tools/perf/util/symbol.h
index fb0be9e92bf3..11d41952ce04 100644
--- a/tools/perf/util/symbol.h
+++ b/tools/perf/util/symbol.h
@@ -69,10 +69,10 @@ struct dso {
         struct symbol    *(*find_function)(struct dso *, u64 ip);
         u8               adjust_symbols:1;
         u8               slen_calculated:1;
-        u8               loaded:1;
         u8               has_build_id:1;
         u8               kernel:1;
         unsigned char    origin;
+        u8               loaded;
         u8               build_id[BUILD_ID_SIZE];
         u16              long_name_len;
         const char       *short_name;
@@ -85,6 +85,8 @@ void dso__delete(struct dso *self);
 
 struct symbol *dso__find_function(struct dso *self, u64 ip);
 
+bool dso__loaded(const struct dso *self, enum map_type type);
+
 struct dso *dsos__findnew(const char *name);
 int dso__load(struct dso *self, struct map *map, symbol_filter_t filter);
 void dsos__fprintf(FILE *fp);