Binary package “libpaf-dsc0” in ubuntu focal
library which exposes DSC Power Facilities to userspace via an API
PAFLib is a IBM written library which exposes Power Architecture Facilities to
userspace via an API. This includes the Data Stream Control Register Facility
(DSCR) and the Event-Based Branching facility (EBB). Linux kernel 3.9 has
exposed problem-state DSCR usage for ISA 2.06 (POWER7 - emulated) and ISA 2.07
(POWER8 - in hardware). Linux 3.10 has exposed the EBB facility.
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The Data Stream Control Register (DSCR for short) of POWER processors is used
to control the degree of aggressiveness of memory prefetching for load and
store.