ftrace: move function tracer functions out of trace.c

Impact: clean up of trace.c

The function tracer functions were put in trace.c because it needed
to share static variables that were in trace.c.  Since then, those
variables have become global for various reasons. This patch moves
the function tracer functions into trace_function.c where they belong.

Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 0 insertions, 84 deletions

diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index 3c54cb125228..2585ffb6c6b5 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -1046,65 +1046,6 @@ ftrace_special(unsigned long arg1, unsigned long arg2, unsigned long arg3)
         local_irq_restore(flags);
 }
 
-#ifdef CONFIG_FUNCTION_TRACER
-static void
-function_trace_call_preempt_only(unsigned long ip, unsigned long parent_ip)
-{
-        struct trace_array *tr = &global_trace;
-        struct trace_array_cpu *data;
-        unsigned long flags;
-        long disabled;
-        int cpu, resched;
-        int pc;
-
-        if (unlikely(!ftrace_function_enabled))
-                return;
-
-        pc = preempt_count();
-        resched = ftrace_preempt_disable();
-        local_save_flags(flags);
-        cpu = raw_smp_processor_id();
-        data = tr->data[cpu];
-        disabled = atomic_inc_return(&data->disabled);
-
-        if (likely(disabled == 1))
-                trace_function(tr, data, ip, parent_ip, flags, pc);
-
-        atomic_dec(&data->disabled);
-        ftrace_preempt_enable(resched);
-}
-
-static void
-function_trace_call(unsigned long ip, unsigned long parent_ip)
-{
-        struct trace_array *tr = &global_trace;
-        struct trace_array_cpu *data;
-        unsigned long flags;
-        long disabled;
-        int cpu;
-        int pc;
-
-        if (unlikely(!ftrace_function_enabled))
-                return;
-
-        /*
-         * Need to use raw, since this must be called before the
-         * recursive protection is performed.
-         */
-        local_irq_save(flags);
-        cpu = raw_smp_processor_id();
-        data = tr->data[cpu];
-        disabled = atomic_inc_return(&data->disabled);
-
-        if (likely(disabled == 1)) {
-                pc = preempt_count();
-                trace_function(tr, data, ip, parent_ip, flags, pc);
-        }
-
-        atomic_dec(&data->disabled);
-        local_irq_restore(flags);
-}
-
 #ifdef CONFIG_FUNCTION_GRAPH_TRACER
 int trace_graph_entry(struct ftrace_graph_ent *trace)
 {
@@ -1162,31 +1103,6 @@ void trace_graph_return(struct ftrace_graph_ret *trace)
 }
 #endif /* CONFIG_FUNCTION_GRAPH_TRACER */
 
-static struct ftrace_ops trace_ops __read_mostly =
-{
-        .func = function_trace_call,
-};
-
-void tracing_start_function_trace(void)
-{
-        ftrace_function_enabled = 0;
-
-        if (trace_flags & TRACE_ITER_PREEMPTONLY)
-                trace_ops.func = function_trace_call_preempt_only;
-        else
-                trace_ops.func = function_trace_call;
-
-        register_ftrace_function(&trace_ops);
-        ftrace_function_enabled = 1;
-}
-
-void tracing_stop_function_trace(void)
-{
-        ftrace_function_enabled = 0;
-        unregister_ftrace_function(&trace_ops);
-}
-#endif
-
 enum trace_file_type {
         TRACE_FILE_LAT_FMT      = 1,
         TRACE_FILE_ANNOTATE     = 2,