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-rw-r--r--tools/perf/util/machine.c23
-rw-r--r--tools/perf/util/machine.h2
2 files changed, 25 insertions, 0 deletions
diff --git a/tools/perf/util/machine.c b/tools/perf/util/machine.c
index 290c2e6d4001..c872991e0f65 100644
--- a/tools/perf/util/machine.c
+++ b/tools/perf/util/machine.c
@@ -832,9 +832,25 @@ static int machine__create_modules(struct machine *machine)
return 0;
}
+const char *ref_reloc_sym_names[] = {"_text", "_stext", NULL};
+
int machine__create_kernel_maps(struct machine *machine)
{
struct dso *kernel = machine__get_kernel(machine);
+ char filename[PATH_MAX];
+ const char *name;
+ u64 addr = 0;
+ int i;
+
+ machine__get_kallsyms_filename(machine, filename, PATH_MAX);
+
+ for (i = 0; (name = ref_reloc_sym_names[i]) != NULL; i++) {
+ addr = kallsyms__get_function_start(filename, name);
+ if (addr)
+ break;
+ }
+ if (!addr)
+ return -1;
if (kernel == NULL ||
__machine__create_kernel_maps(machine, kernel) < 0)
@@ -853,6 +869,13 @@ int machine__create_kernel_maps(struct machine *machine)
* Now that we have all the maps created, just set the ->end of them:
*/
map_groups__fixup_end(&machine->kmaps);
+
+ if (maps__set_kallsyms_ref_reloc_sym(machine->vmlinux_maps, name,
+ addr)) {
+ machine__destroy_kernel_maps(machine);
+ return -1;
+ }
+
return 0;
}
diff --git a/tools/perf/util/machine.h b/tools/perf/util/machine.h
index 477133015440..f77e91e483dc 100644
--- a/tools/perf/util/machine.h
+++ b/tools/perf/util/machine.h
@@ -18,6 +18,8 @@ union perf_event;
#define HOST_KERNEL_ID (-1)
#define DEFAULT_GUEST_KERNEL_ID (0)
+extern const char *ref_reloc_sym_names[];
+
struct machine {
struct rb_node rb_node;
pid_t pid;