1 files changed, 0 insertions, 53 deletions
diff --git a/arch/nds32/kernel/stacktrace.c b/arch/nds32/kernel/stacktrace.c
deleted file mode 100644
index d974c0c1c65f..000000000000
--- a/arch/nds32/kernel/stacktrace.c
+++ /dev/null
@@ -1,53 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-// Copyright (C) 2005-2017 Andes Technology Corporation
-
-#include <linux/sched/debug.h>
-#include <linux/sched/task_stack.h>
-#include <linux/stacktrace.h>
-#include <linux/ftrace.h>
-
-void save_stack_trace(struct stack_trace *trace)
-{
-	save_stack_trace_tsk(current, trace);
-}
-EXPORT_SYMBOL_GPL(save_stack_trace);
-
-void save_stack_trace_tsk(struct task_struct *tsk, struct stack_trace *trace)
-{
-	unsigned long *fpn;
-	int skip = trace->skip;
-	int savesched;
-	int graph_idx = 0;
-
-	if (tsk == current) {
-		__asm__ __volatile__("\tori\t%0, $fp, #0\n":"=r"(fpn));
-		savesched = 1;
-	} else {
-		fpn = (unsigned long *)thread_saved_fp(tsk);
-		savesched = 0;
-	}
-
-	while (!kstack_end(fpn) && !((unsigned long)fpn & 0x3)
-	       && (fpn >= (unsigned long *)TASK_SIZE)) {
-		unsigned long lpp, fpp;
-
-		lpp = fpn[LP_OFFSET];
-		fpp = fpn[FP_OFFSET];
-		if (!__kernel_text_address(lpp))
-			break;
-		else
-			lpp = ftrace_graph_ret_addr(tsk, &graph_idx, lpp, NULL);
-
-		if (savesched || !in_sched_functions(lpp)) {
-			if (skip) {
-				skip--;
-			} else {
-				trace->entries[trace->nr_entries++] = lpp;
-				if (trace->nr_entries >= trace->max_entries)
-					break;
-			}
-		}
-		fpn = (unsigned long *)fpp;
-	}
-}
-EXPORT_SYMBOL_GPL(save_stack_trace_tsk);