andi t0, t0, _TIF_SYSCALL_WORK
bnez t0, handle_syscall_trace_exit
-ret_from_exception:
+SYM_CODE_START_NOALIGN(ret_from_exception)
REG_L s0, PT_STATUS(sp)
csrc CSR_STATUS, SR_IE
#ifdef CONFIG_TRACE_IRQFLAGS
andi s0, s0, SR_SPP
#endif
bnez s0, resume_kernel
+SYM_CODE_END(ret_from_exception)
resume_userspace:
/* Interrupts must be disabled here so flags are checked atomically */
#ifdef CONFIG_FRAME_POINTER
+extern asmlinkage void ret_from_exception(void);
+
void notrace walk_stackframe(struct task_struct *task, struct pt_regs *regs,
bool (*fn)(void *, unsigned long), void *arg)
{
fp = frame->fp;
pc = ftrace_graph_ret_addr(current, NULL, frame->ra,
&frame->ra);
+ if (pc == (unsigned long)ret_from_exception) {
+ if (unlikely(!__kernel_text_address(pc) || !fn(arg, pc)))
+ break;
+
+ pc = ((struct pt_regs *)sp)->epc;
+ fp = ((struct pt_regs *)sp)->s0;
+ }
}
}