cvs commit: src/lib/libthr/thread thr_cond.c thr_private.h thr_rwlock.c

Robert Watson rwatson at
Mon Mar 31 01:18:03 PDT 2008

On Mon, 31 Mar 2008, David Xu wrote:

> davidxu     2008-03-31 02:55:50 UTC
>  FreeBSD src repository
>  Modified files:
>    lib/libthr/thread    thr_cond.c thr_private.h thr_rwlock.c
>  Log:
>  Rewrite rwlock to user atomic operations to change rwlock state, this
>  eliminates internal mutex lock contention when most rwlock operations
>  are read.
>  Orignal patch provided by: jeff

Do you have MFC plans for this change?  It would be great to see this hit 
RELENG_7 before 7.1, assuming it settles out well.

Robert N M Watson
Computer Laboratory
University of Cambridge

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