perf top: Properly notify the user that vmlinux is missing

Before this patch this message would very briefly appear on the
screen and then the screen would get updates only on the top,
for number of interrupts received, etc, but no annotation would
be performed:

 [root@doppio linux-2.6-tip]# perf top -s n_tty_write > /tmp/bla
 objdump: '[kernel.kallsyms]': No such file

Now this is what the user gets:

 [root@doppio linux-2.6-tip]# perf top -s n_tty_write
 Can't annotate n_tty_write: No vmlinux file was found in the
 path: [0] vmlinux
 [1] /boot/vmlinux
 [2] /boot/vmlinux-2.6.33-rc5
 [3] /lib/modules/2.6.33-rc5/build/vmlinux
 [4] /usr/lib/debug/lib/modules/2.6.33-rc5/vmlinux
 [root@doppio linux-2.6-tip]#

This bug was introduced when we added automatic search for
vmlinux, before that time the user had to specify a vmlinux
file.

Reported-by: David S. Miller <davem@davemloft.net>
Reported-by: Ingo Molnar <mingo@elte.hu>
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>
Cc: <stable@kernel.org>
LKML-Reference: <1268664418-28328-2-git-send-email-acme@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 12 insertions, 13 deletions

diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index 75cd46807c70..292f941555a8 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -18,18 +18,6 @@
 #define NT_GNU_BUILD_ID 3
 #endif
 
-enum dso_origin {
-        DSO__ORIG_KERNEL = 0,
-        DSO__ORIG_JAVA_JIT,
-        DSO__ORIG_BUILD_ID_CACHE,
-        DSO__ORIG_FEDORA,
-        DSO__ORIG_UBUNTU,
-        DSO__ORIG_BUILDID,
-        DSO__ORIG_DSO,
-        DSO__ORIG_KMODULE,
-        DSO__ORIG_NOT_FOUND,
-};
-
 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,
@@ -1017,7 +1005,7 @@ static int dso__load_sym(struct dso *self, struct map *map, const char *name,
                                 }
                                 curr_map->map_ip = identity__map_ip;
                                 curr_map->unmap_ip = identity__map_ip;
-                                curr_dso->origin = DSO__ORIG_KERNEL;
+                                curr_dso->origin = self->origin;
                                 map_groups__insert(kmap->kmaps, curr_map);
                                 dsos__add(&dsos__kernel, curr_dso);
                                 dso__set_loaded(curr_dso, map->type);
@@ -1887,6 +1875,17 @@ out_fail:
         return -1;
 }
 
+size_t vmlinux_path__fprintf(FILE *fp)
+{
+        int i;
+        size_t printed = 0;
+
+        for (i = 0; i < vmlinux_path__nr_entries; ++i)
+                printed += fprintf(fp, "[%d] %s\n", i, vmlinux_path[i]);
+
+        return printed;
+}
+
 static int setup_list(struct strlist **list, const char *list_str,
                       const char *list_name)
 {