Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6

[pandora-kernel.git] / arch / x86 / kernel / ftrace.c

diff --git a/arch/x86/kernel/ftrace.c b/arch/x86/kernel/ftrace.c
index 231bdd3..76f7141 100644 (file)
--- a/arch/x86/kernel/ftrace.c
+++ b/arch/x86/kernel/ftrace.c
@@ -389,79 +389,6 @@ void ftrace_nmi_exit(void)
 
 #endif /* !CONFIG_DYNAMIC_FTRACE */
 
-/* Add a function return address to the trace stack on thread info.*/
-static int push_return_trace(unsigned long ret, unsigned long long time,
-                               unsigned long func, int *depth)
-{
-       int index;
-
-       if (!current->ret_stack)
-               return -EBUSY;
-
-       /* The return trace stack is full */
-       if (current->curr_ret_stack == FTRACE_RETFUNC_DEPTH - 1) {
-               atomic_inc(&current->trace_overrun);
-               return -EBUSY;
-       }
-
-       index = ++current->curr_ret_stack;
-       barrier();
-       current->ret_stack[index].ret = ret;
-       current->ret_stack[index].func = func;
-       current->ret_stack[index].calltime = time;
-       *depth = index;
-
-       return 0;
-}
-
-/* Retrieve a function return address to the trace stack on thread info.*/
-static void pop_return_trace(struct ftrace_graph_ret *trace, unsigned long *ret)
-{
-       int index;
-
-       index = current->curr_ret_stack;
-
-       if (unlikely(index < 0)) {
-               ftrace_graph_stop();
-               WARN_ON(1);
-               /* Might as well panic, otherwise we have no where to go */
-               *ret = (unsigned long)panic;
-               return;
-       }
-
-       *ret = current->ret_stack[index].ret;
-       trace->func = current->ret_stack[index].func;
-       trace->calltime = current->ret_stack[index].calltime;
-       trace->overrun = atomic_read(&current->trace_overrun);
-       trace->depth = index;
-       barrier();
-       current->curr_ret_stack--;
-
-}
-
-/*
- * Send the trace to the ring-buffer.
- * @return the original return address.
- */
-unsigned long ftrace_return_to_handler(void)
-{
-       struct ftrace_graph_ret trace;
-       unsigned long ret;
-
-       pop_return_trace(&trace, &ret);
-       trace.rettime = cpu_clock(raw_smp_processor_id());
-       ftrace_graph_return(&trace);
-
-       if (unlikely(!ret)) {
-               ftrace_graph_stop();
-               WARN_ON(1);
-               /* Might as well panic. What else to do? */
-               ret = (unsigned long)panic;
-       }
-
-       return ret;
-}
-
 /*
  * Hook the return address and push it in the stack of return addrs
  * in current thread info.
@@ -521,7 +448,7 @@ void prepare_ftrace_return(unsigned long *parent, unsigned long self_addr)
 
        calltime = cpu_clock(raw_smp_processor_id());
 
-       if (push_return_trace(old, calltime,
+       if (ftrace_push_return_trace(old, calltime,
                                self_addr, &trace.depth) == -EBUSY) {
                *parent = old;
                return;