CVS commit: src/sys/arch/mips/include

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

Module Name:    src
Committed By:   riastradh
Date:           Sun Feb 27 19:22:20 UTC 2022

Modified Files:
        src/sys/arch/mips/include: asm.h

Log Message:
mips: Redefine LLSCSYNC as empty on non-Octeon MP.

This change deletes memory barriers on non-Octeon MP.  However, all
the appropriate acquire and release barriers are already used in
mutex stubs, and no barriers are needed in atomic_* unless we set
__HAVE_ATOMIC_AS_MEMBAR which we don't on MIPS.  So this should be
safe.

Unclear whether we need this even on Octeon -- don't have a clear
reference on why it's here.


To generate a diff of this commit:
cvs rdiff -u -r1.68 -r1.69 src/sys/arch/mips/include/asm.h

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