CVS commit: src/sys/rump/librump/rumpkern

["Taylor R Campbell" <riastradh%netbsd.org@localhost>]

Module Name:    src
Committed By:   riastradh
Date:           Wed Feb 22 21:44:45 UTC 2023

Modified Files:
        src/sys/rump/librump/rumpkern: lwproc.c

Log Message:
rump: Nix membar_enter/exit after/before RUMPUSER_LWP_CREATE/DESTROY.

These make no sense and are obviously not needed for any of the
rumpuser implementations in-tree.  (For single-threaded fiber and
pth_dummy, no barriers needed; for pth, RUMPUSER_LWP_CREATE/DESTROY
use pthread_mutex so don't need any barriers.)

It _might_ make sense to do membar_release/acquire around just
RUMPUSER_LWP_DESTROY, perhaps if there's some reference-counting
business involved.  But if a rumpuser implementation really needs
that it can do it itself.


To generate a diff of this commit:
cvs rdiff -u -r1.53 -r1.54 src/sys/rump/librump/rumpkern/lwproc.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.