ring_buffer: Remove unused "event" parameter

After commit a389d86f7fd0 ("ring-buffer: Have nested events still record
running time stamp"), the "event" parameter is no longer used in either
ring_buffer_unlock_commit() or rb_commit(). Best to remove it.

Link: https://lkml.kernel.org/r/[e-mail]

Signed-off-by: Song Chen <[e-mail]>
Signed-off-by: Steven Rostedt (Google) <[e-mail]>

include/linux/ring_buffer.h

···
 
 struct ring_buffer_event *ring_buffer_lock_reserve(struct trace_buffer *buffer,
 						   unsigned long length);
-int ring_buffer_unlock_commit(struct trace_buffer *buffer,
-			      struct ring_buffer_event *event);
+int ring_buffer_unlock_commit(struct trace_buffer *buffer);
 int ring_buffer_write(struct trace_buffer *buffer,
 		      unsigned long length, void *data);
 

kernel/trace/ring_buffer.c

···
 		event->time_delta = 1;
 }
 
-static void rb_commit(struct ring_buffer_per_cpu *cpu_buffer,
-		      struct ring_buffer_event *event)
+static void rb_commit(struct ring_buffer_per_cpu *cpu_buffer)
 {
 	local_inc(&cpu_buffer->entries);
 	rb_end_commit(cpu_buffer);
···
  *
  * Must be paired with ring_buffer_lock_reserve.
  */
-int ring_buffer_unlock_commit(struct trace_buffer *buffer,
-			      struct ring_buffer_event *event)
+int ring_buffer_unlock_commit(struct trace_buffer *buffer)
 {
 	struct ring_buffer_per_cpu *cpu_buffer;
 	int cpu = raw_smp_processor_id();
 
 	cpu_buffer = buffer->buffers[cpu];
 
-	rb_commit(cpu_buffer, event);
+	rb_commit(cpu_buffer);
 
 	rb_wakeups(buffer, cpu_buffer);
 
···
 
 	memcpy(body, data, length);
 
-	rb_commit(cpu_buffer, event);
+	rb_commit(cpu_buffer);
 
 	rb_wakeups(buffer, cpu_buffer);
 
···
 	}
 
  out:
-	ring_buffer_unlock_commit(data->buffer, event);
+	ring_buffer_unlock_commit(data->buffer);
 
 	return 0;
 }

kernel/trace/ring_buffer_benchmark.c

···
 				hit++;
 				entry = ring_buffer_event_data(event);
 				*entry = smp_processor_id();
-				ring_buffer_unlock_commit(buffer, event);
+				ring_buffer_unlock_commit(buffer);
 			}
 		}
 		end_time = ktime_get();

kernel/trace/trace.c

···
 		/* ring_buffer_unlock_commit() enables preemption */
 		preempt_enable_notrace();
 	} else
-		ring_buffer_unlock_commit(buffer, event);
+		ring_buffer_unlock_commit(buffer);
 }
 
 /**