[dpdk-dev] [PATCH v3] pflock: implementation of phase-fair reader writer locks

[Stephen Hemminger]

On Wed,  3 Mar 2021 11:19:45 -0800
Stephen Hemminger <stephen at networkplumber.org> wrote:

> This is a new type of reader-writer lock that provides better fairness
> guarantees which makes it better for typical DPDK applications.
> They lock internally uses two ticket pools, one for readers and one
> for writers.
> 
> Phase fair reader writer locks ensure that neither reader or writer will be
> starved. Neither reader or writer are preferred, they execute in
> alternating phases. All operations of the same time (reader or writer)
> that try to 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 <stephen at networkplumber.org>

Why has there been no review of this patch?

The only complaint in patchwork is a bogus checkpatch warning about
possible spelling error.