> -----Original Message-----
> From: dev <[email protected]> On Behalf Of Stephen Hemminger
> Sent: Friday, April 2, 2021 2:43 AM
> To: [email protected]; Honnappa Nagarahalli <[email protected]>
> Cc: Stephen Hemminger <[email protected]>
> Subject: [dpdk-dev] [PATCH v5] pflock: implementation of phase-fair reader
> writer locks
>
> This is a new type of reader-writer lock that provides better fairness
> guarantees which better suited for typical DPDK applications.
> A pflock has two ticket pools, one for readers and one
> for writers.
>
> Phase fair reader writer locks ensure that neither reader nor writer will be
> starved. Neither reader or writer are preferred, they execute in
> alternating phases. All operations of the same type (reader or writer)
> that acquire the lock are handled in FIFO order. Write
> operations are exclusive, and multiple read operations can be run
> together (until a write arrives).
>
> A similar implementation is in Concurrency Kit package in FreeBSD.
> For more information see:
> "Reader-Writer Synchronization for Shared-Memory Multiprocessor
> Real-Time Systems",
> http://www.cs.unc.edu/~anderson/papers/ecrts09b.pdf
>
> Signed-off-by: Stephen Hemminger <[email protected]>
> ---
Acked-by: Konstantin Ananyev <[email protected]>
> 2.30.2
