1 files changed, 14 insertions, 0 deletions

diff --git a/arch/sparc/kernel/perf_event.c b/arch/sparc/kernel/perf_event.c
index e2771939341d..34ce49f80eac 100644
--- a/arch/sparc/kernel/perf_event.c
+++ b/arch/sparc/kernel/perf_event.c
@@ -14,6 +14,7 @@
 
 #include <linux/perf_event.h>
 #include <linux/kprobes.h>
+#include <linux/ftrace.h>
 #include <linux/kernel.h>
 #include <linux/kdebug.h>
 #include <linux/mutex.h>
@@ -1276,6 +1277,9 @@ static void perf_callchain_kernel(struct pt_regs *regs,
                                   struct perf_callchain_entry *entry)
 {
         unsigned long ksp, fp;
+#ifdef CONFIG_FUNCTION_GRAPH_TRACER
+        int graph = 0;
+#endif
 
         callchain_store(entry, PERF_CONTEXT_KERNEL);
         callchain_store(entry, regs->tpc);
@@ -1303,6 +1307,16 @@ static void perf_callchain_kernel(struct pt_regs *regs,
                         fp = (unsigned long)sf->fp + STACK_BIAS;
                 }
                 callchain_store(entry, pc);
+#ifdef CONFIG_FUNCTION_GRAPH_TRACER
+                if ((pc + 8UL) == (unsigned long) &return_to_handler) {
+                        int index = current->curr_ret_stack;
+                        if (current->ret_stack && index >= graph) {
+                                pc = current->ret_stack[index - graph].ret;
+                                callchain_store(entry, pc);
+                                graph++;
+                        }
+                }
+#endif
         } while (entry->nr < PERF_MAX_STACK_DEPTH);
 }