tracing: Remove special traces

Special traces type was only used by sysprof. Lets remove it now
that sysprof ftrace plugin has been dropped.

Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Acked-by: Soeren Sandmann <sandmann@daimi.au.dk>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Li Zefan <lizf@cn.fujitsu.com>

1 files changed, 0 insertions, 55 deletions

diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index 78a49e67f7d..d9a4aa02c38 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -1331,61 +1331,6 @@ static void __trace_userstack(struct trace_array *tr, unsigned long flags)
 
 #endif /* CONFIG_STACKTRACE */
 
-static void
-ftrace_trace_special(void *__tr,
-                     unsigned long arg1, unsigned long arg2, unsigned long arg3,
-                     int pc)
-{
-        struct ftrace_event_call *call = &event_special;
-        struct ring_buffer_event *event;
-        struct trace_array *tr = __tr;
-        struct ring_buffer *buffer = tr->buffer;
-        struct special_entry *entry;
-
-        event = trace_buffer_lock_reserve(buffer, TRACE_SPECIAL,
-                                          sizeof(*entry), 0, pc);
-        if (!event)
-                return;
-        entry   = ring_buffer_event_data(event);
-        entry->arg1                     = arg1;
-        entry->arg2                     = arg2;
-        entry->arg3                     = arg3;
-
-        if (!filter_check_discard(call, entry, buffer, event))
-                trace_buffer_unlock_commit(buffer, event, 0, pc);
-}
-
-void
-__trace_special(void *__tr, void *__data,
-                unsigned long arg1, unsigned long arg2, unsigned long arg3)
-{
-        ftrace_trace_special(__tr, arg1, arg2, arg3, preempt_count());
-}
-
-void
-ftrace_special(unsigned long arg1, unsigned long arg2, unsigned long arg3)
-{
-        struct trace_array *tr = &global_trace;
-        struct trace_array_cpu *data;
-        unsigned long flags;
-        int cpu;
-        int pc;
-
-        if (tracing_disabled)
-                return;
-
-        pc = preempt_count();
-        local_irq_save(flags);
-        cpu = raw_smp_processor_id();
-        data = tr->data[cpu];
-
-        if (likely(atomic_inc_return(&data->disabled) == 1))
-                ftrace_trace_special(tr, arg1, arg2, arg3, pc);
-
-        atomic_dec(&data->disabled);
-        local_irq_restore(flags);
-}
-
 /**
  * trace_vbprintk - write binary msg to tracing buffer
  *