System, method and computer program product for application-level cache-mapping awareness and reallocation

A system, comprising:

• a plurality of processors;
• a cache memory coupled to said plurality of processors;
• a system interconnect coupled to said plurality of processors;
• and
• a computer usable storage medium recording computer program code, said computer usable medium being coupled to said system interconnect, said computer program code comprising instructions executable by said plurality of processors and configured for:
• an application determining if an appropriate cache distribution has been allocated, wherein said determining includes said application evaluating a range of memory addresses within a cache memory utilizing cache token values according to application-specific requirements, wherein each congruence class within said cache memory is assigned a unique cache token value;
• said application requesting a storage map, wherein said storage map is a cache map, in response to determining that said appropriate cache distribution has not been allocated;
• a kernel service creating said storage map, wherein said kernel service is a cache mapping service that generates said storage map through interaction with firmware via a plurality of messages;
• and
• sending said storage map to said application via said cache mapping service.

A computer usable storage medium recording computer program code, said computer program code comprising computer executable instructions configured for:

• an application determining if an appropriate cache distribution has been allocated, wherein said determining includes said application evaluating a range of memory addresses within a cache memory utilizing cache token values according to application-specific requirements, wherein each congruence class within said cache memory is assigned a unique cache token value;
• said application requesting a storage map, wherein said storage map is a cache map, in response to determining that said appropriate cache distribution has not been allocated;
• a kernel service creating said storage map, wherein said kernel service is a cache mapping service that generates said storage map through interaction with firmware via a plurality of messages;
• and
• sending said storage map to said application via said cache mapping service.