17 	u64 stack_size, *buf;  in sample_ustack()  local
19 	buf = malloc(STACK_SIZE);  in sample_ustack()
20 	if (!buf) {  in sample_ustack()
30 		free(buf);  in sample_ustack()
37 	memcpy(buf, (void *) sp, stack_size);  in sample_ustack()
38 	stack->data = (char *) buf;  in sample_ustack()
47 	u64 *buf;  in test__arch_unwind_sample()  local
49 	buf = calloc(1, sizeof(u64) * PERF_REGS_MAX);  in test__arch_unwind_sample()
50 	if (!buf) {  in test__arch_unwind_sample()
55 	perf_regs_load(buf);  in test__arch_unwind_sample()
57 	regs->regs = buf;  in test__arch_unwind_sample()
60 	return sample_ustack(sample, thread, buf);  in test__arch_unwind_sample()