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-rw-r--r--tools/perf/util/machine.c28
1 files changed, 17 insertions, 11 deletions
diff --git a/tools/perf/util/machine.c b/tools/perf/util/machine.c
index 7a47f52ccfcc..d97e014c3df3 100644
--- a/tools/perf/util/machine.c
+++ b/tools/perf/util/machine.c
@@ -796,11 +796,11 @@ const char *ref_reloc_sym_names[] = {"_text", "_stext", NULL};
* Returns the name of the start symbol in *symbol_name. Pass in NULL as
* symbol_name if it's not that important.
*/
-static u64 machine__get_running_kernel_start(struct machine *machine,
- const char **symbol_name)
+static int machine__get_running_kernel_start(struct machine *machine,
+ const char **symbol_name, u64 *start)
{
char filename[PATH_MAX];
- int i;
+ int i, err = -1;
const char *name;
u64 addr = 0;
@@ -810,21 +810,28 @@ static u64 machine__get_running_kernel_start(struct machine *machine,
return 0;
for (i = 0; (name = ref_reloc_sym_names[i]) != NULL; i++) {
- addr = kallsyms__get_function_start(filename, name);
- if (addr)
+ err = kallsyms__get_function_start(filename, name, &addr);
+ if (!err)
break;
}
+ if (err)
+ return -1;
+
if (symbol_name)
*symbol_name = name;
- return addr;
+ *start = addr;
+ return 0;
}
int __machine__create_kernel_maps(struct machine *machine, struct dso *kernel)
{
int type;
- u64 start = machine__get_running_kernel_start(machine, NULL);
+ u64 start = 0;
+
+ if (machine__get_running_kernel_start(machine, NULL, &start))
+ return -1;
/* In case of renewal the kernel map, destroy previous one */
machine__destroy_kernel_maps(machine);
@@ -1185,8 +1192,8 @@ static int machine__create_modules(struct machine *machine)
int machine__create_kernel_maps(struct machine *machine)
{
struct dso *kernel = machine__get_kernel(machine);
- const char *name;
- u64 addr;
+ const char *name = NULL;
+ u64 addr = 0;
int ret;
if (kernel == NULL)
@@ -1211,8 +1218,7 @@ int machine__create_kernel_maps(struct machine *machine)
*/
map_groups__fixup_end(&machine->kmaps);
- addr = machine__get_running_kernel_start(machine, &name);
- if (!addr) {
+ if (machine__get_running_kernel_start(machine, &name, &addr)) {
} else if (maps__set_kallsyms_ref_reloc_sym(machine->vmlinux_maps, name, addr)) {
machine__destroy_kernel_maps(machine);
return -1;