1 files changed, 0 insertions, 74 deletions
diff --git a/arch/arm64/include/asm/stacktrace.h b/arch/arm64/include/asm/stacktrace.h
index ea828579a98b..6ebdcdff77f5 100644
--- a/arch/arm64/include/asm/stacktrace.h
+++ b/arch/arm64/include/asm/stacktrace.h
@@ -57,78 +57,4 @@ static inline bool on_overflow_stack(unsigned long sp, unsigned long size,
 			struct stack_info *info) { return false; }
 #endif
 
-
-/*
- * We can only safely access per-cpu stacks from current in a non-preemptible
- * context.
- */
-static inline bool on_accessible_stack(const struct task_struct *tsk,
-				       unsigned long sp, unsigned long size,
-				       struct stack_info *info)
-{
-	if (on_accessible_stack_common(tsk, sp, size, info))
-		return true;
-
-	if (on_task_stack(tsk, sp, size, info))
-		return true;
-	if (tsk != current || preemptible())
-		return false;
-	if (on_irq_stack(sp, size, info))
-		return true;
-	if (on_sdei_stack(sp, size, info))
-		return true;
-
-	return false;
-}
-
-/*
- * Unwind from one frame record (A) to the next frame record (B).
- *
- * We terminate early if the location of B indicates a malformed chain of frame
- * records (e.g. a cycle), determined based on the location and fp value of A
- * and the location (but not the fp value) of B.
- */
-static inline int notrace unwind_next(struct unwind_state *state)
-{
-	struct task_struct *tsk = state->task;
-	unsigned long fp = state->fp;
-	struct stack_info info;
-	int err;
-
-	/* Final frame; nothing to unwind */
-	if (fp == (unsigned long)task_pt_regs(tsk)->stackframe)
-		return -ENOENT;
-
-	err = unwind_next_common(state, &info, NULL);
-	if (err)
-		return err;
-
-	state->pc = ptrauth_strip_insn_pac(state->pc);
-
-#ifdef CONFIG_FUNCTION_GRAPH_TRACER
-	if (tsk->ret_stack &&
-		(state->pc == (unsigned long)return_to_handler)) {
-		unsigned long orig_pc;
-		/*
-		 * This is a case where function graph tracer has
-		 * modified a return address (LR) in a stack frame
-		 * to hook a function return.
-		 * So replace it to an original value.
-		 */
-		orig_pc = ftrace_graph_ret_addr(tsk, NULL, state->pc,
-						(void *)state->fp);
-		if (WARN_ON_ONCE(state->pc == orig_pc))
-			return -EINVAL;
-		state->pc = orig_pc;
-	}
-#endif /* CONFIG_FUNCTION_GRAPH_TRACER */
-#ifdef CONFIG_KRETPROBES
-	if (is_kretprobe_trampoline(state->pc))
-		state->pc = kretprobe_find_ret_addr(tsk, (void *)state->fp, &state->kr_cur);
-#endif
-
-	return 0;
-}
-NOKPROBE_SYMBOL(unwind_next);
-
 #endif	/* __ASM_STACKTRACE_H */