2 files changed, 8 insertions, 26 deletions

diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h
index fb6c91eac7e3..bea785cef493 100644
--- a/include/linux/perf_event.h
+++ b/include/linux/perf_event.h
@@ -905,8 +905,10 @@ extern atomic_t perf_swevent_enabled[PERF_COUNT_SW_MAX];
 
 extern void __perf_sw_event(u32, u64, int, struct pt_regs *, u64);
 
-extern void
-perf_arch_fetch_caller_regs(struct pt_regs *regs, unsigned long ip, int skip);
+#ifndef perf_arch_fetch_caller_regs
+static inline void
+perf_arch_fetch_caller_regs(struct regs *regs, unsigned long ip) { }
+#endif
 
 /*
  * Take a snapshot of the regs. Skip ip and frame pointer to
@@ -916,31 +918,11 @@ perf_arch_fetch_caller_regs(struct pt_regs *regs, unsigned long ip, int skip);
  * - bp for callchains
  * - eflags, for future purposes, just in case
  */
-static inline void perf_fetch_caller_regs(struct pt_regs *regs, int skip)
+static inline void perf_fetch_caller_regs(struct pt_regs *regs)
 {
-        unsigned long ip;
-
         memset(regs, 0, sizeof(*regs));
 
-        switch (skip) {
-        case 1 :
-                ip = CALLER_ADDR0;
-                break;
-        case 2 :
-                ip = CALLER_ADDR1;
-                break;
-        case 3 :
-                ip = CALLER_ADDR2;
-                break;
-        case 4:
-                ip = CALLER_ADDR3;
-                break;
-        /* No need to support further for now */
-        default:
-                ip = 0;
-        }
-
-        return perf_arch_fetch_caller_regs(regs, ip, skip);
+        perf_arch_fetch_caller_regs(regs, CALLER_ADDR0);
 }
 
 static inline void
@@ -950,7 +932,7 @@ perf_sw_event(u32 event_id, u64 nr, int nmi, struct pt_regs *regs, u64 addr)
                 struct pt_regs hot_regs;
 
                 if (!regs) {
-                        perf_fetch_caller_regs(&hot_regs, 1);
+                        perf_fetch_caller_regs(&hot_regs);
                         regs = &hot_regs;
                 }
                 __perf_sw_event(event_id, nr, nmi, regs, addr);
diff --git a/include/trace/ftrace.h b/include/trace/ftrace.h
index 3d685d1f2a03..8ee8b6e6b25e 100644
--- a/include/trace/ftrace.h
+++ b/include/trace/ftrace.h
@@ -705,7 +705,7 @@ perf_trace_##call(void *__data, proto)					\
         int __data_size;                                                \
         int rctx;                                                       \
                                                                         \
-        perf_fetch_caller_regs(&__regs, 1);                             \
+        perf_fetch_caller_regs(&__regs);                                \
                                                                         \
         __data_size = ftrace_get_offsets_##call(&__data_offsets, args); \
         __entry_size = ALIGN(__data_size + sizeof(*entry) + sizeof(u32),\