Nov 13 – 15, 2023
America/New_York timezone

Perf feature improvements in RISC-V

Nov 13, 2023, 11:55 AM
15m
"James River Salon A" (Omni Richmond Hotel)

"James River Salon A"

Omni Richmond Hotel

82
RISC-V MC RISC-V MC

Speaker

ATISH PATRA (Rivos)

Description

RISC-V Linux kernel has some basic perf support with counter overflow and stat until now. This has its own limitations and multiple perf related ISA extensions are being drafted to address these concerns. We would like discuss few of the existing challenges and new issues related to implementation for new ISA extensions. For example, counter event mapping, event encoding, host + guest usage for perf, kernel blind spot profiling with SSE, restricted user space access for cycle/instret.

The objective is to get an early feedback from the community to figure out the best path forward.

Primary author

Presentation materials