mem-ruby: extended transaction profiling

Adds additional stats to accounts for incoming and outgoing retries.

Calling incomingTransactionStart with retried==true indicates the
received request initiating the transaction is a retried request.

Calling outgoingTransactionEnd with retried==true indicates the request
was retried by the requester.

Change-Id: I22fd971d4997fce0c114b5ec030cbbf9b463d0c6
Signed-off-by: Tiago Mück <tiago.muck@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/41158
Reviewed-by: Hoa Nguyen <hoanguyen@ucdavis.edu>
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>
2 files changed