Private caching for thread local storage data access

A method, performed by a central processing unit (CPU) including a plurality of cores, of accessing data stored in a Last-Level Cache (LLC) interconnected with the plurality of cores, the method comprising:

• initiating a data access request;
• determining whether the data access request is a Thread Local Storage (TLS) type of access request based on an annotation associated with the data access request;
• routing the data access request to a first private portion of the LLC in response to the determination that the data access request is the TLS type of access request, the LLC including a plurality of private portions that correspond to the plurality of cores, the first private portion of the plurality of private portions being connected to a first core and exclusively assigned to the first core, and a second private portion of the plurality of private portions being connected to a second core of the plurality of cores and is exclusively assigned to the second core;
• and
• routing the data access request to a shared portion of the LLC when in response to the determination that the data access request is not the TLS type of access request, the shared portion being shared by the plurality of cores.

A data processing system, comprising:

• a memory storing data;
• and
• a processor including a plurality of cores, wherein the processor is coupled to the memory through multiple levels of caches;
• wherein the multiple levels of caches include a Last-Level Cache (LLC), the LLC including a shared portion and a plurality of private portions that correspond to the plurality of cores, wherein:
• the shared portion is shared by the plurality of cores,
• a first private portion of the plurality of private portions is connected to a first core of the plurality of cores and is exclusively assigned to the first core, and
• a second private portion of the plurality of private portions is connected to a second core of the plurality of cores and is exclusively assigned to the second core.