Recording controller and recording control method
AssigneeFujitsu Limited
InventorsHiroyuki Kojima, Masaki Ukai
Life of this patent
Estimating the term…
Abstract
Upon retrieving, after occurrence of replacement of a first cache, move out (MO) data that is a write back target, a second cache determines, based on data that is set in a control flag of a register, whether a new registration process of move in (MI) data with respect to a recording position of the MO data is completed. Upon determining that the new registration process is not completed, the second cache cancels the new registration process to ensure that a request of the new registration process is not output to a pipeline.
Claims6
A recording controller that carries out recording control of data with respect to a first cache and a second cache that are included in a processor, the recording controller comprising:
- a determining unit that determines, at the time of writing back to the second cache, a first data that is recorded in the first cache, whether a second data that is data before updation of the first data is already recorded in a recording position of the second cache whereto the first data is written back;
- and
- a recording controlling unit that curbs, upon the determining unit determining that the second data is not recorded in the recording position, a recording of the second data in the recording position, and records the first data in the recording position.
A recording control method that carries out recording control of data with respect to a first cache and a second cache that are included in a processor, the recording control method comprising:
- determining, at the time of writing back to the second cache, a first data that is recorded in the first cache, whether a second data that is data before updation of the first data is already recorded in a recording position of the second cache whereto the first data is written back;
- and
- curbing, upon the determining that the second data is not recorded in the recording position, a recording of the second data in the recording position, and recording the first data in the recording position.
Dependencies are inferred from the claim text.