[RFC PATCH 0/2 v2] Unified trace buffer (take two)

[Steven Rostedt]

Again: this is a proof of concept, just spitting out code for comments.

Here's my second attempt.

Changes since version 1:

 - Ripped away all the debugfs and event registration from ring buffers.

 - Removed the mergesort from the ringbuffer and pushed that up to the
   tracer.

 - Changed the event header to what Linus suggested (we can discuss this
   and try other suggestions for v3, namely Peter Zijlstras ideas).

 struct {
 	u32 time_delta:27, type:5;
	u32 data;
	u64 array[];
 };

 - Added timestamp at beginning of each page and implemented a way
   for all events to get the full timestamp from the previous.

 - The changes to ftrace on this release was much less than the first
   one.

Comments?

-- Steve

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