CVS commit: src/sys/arch

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

Module Name:    src
Committed By:   riastradh
Date:           Sat Feb 12 17:17:54 UTC 2022

Modified Files:
        src/sys/arch/alpha/include: lock.h
        src/sys/arch/hppa/include: lock.h
        src/sys/arch/ia64/include: lock.h
        src/sys/arch/powerpc/include: lock.h
        src/sys/arch/vax/include: lock.h
        src/sys/arch/x86/include: lock.h

Log Message:
__cpu_simple_lock(9): Omit needless barriers in init.

It is, and always has been, the caller's responsibility to ensure the
lock is initialized before it can be used -- otherwise the memory
could hold garbage; it is nonsensical to even attempt locking
operations on it before initialization.

So there's no need to issue explicit barriers here.  The barrier
seems to have been introduced in sys/arch/alpha/alpha/lock_machdep.c
rev. 1.1 (since moved to inline asm in alpha/include/lock.h) and then
copied & pasted into several other architectures.


To generate a diff of this commit:
cvs rdiff -u -r1.31 -r1.32 src/sys/arch/alpha/include/lock.h
cvs rdiff -u -r1.22 -r1.23 src/sys/arch/hppa/include/lock.h
cvs rdiff -u -r1.8 -r1.9 src/sys/arch/ia64/include/lock.h
cvs rdiff -u -r1.16 -r1.17 src/sys/arch/powerpc/include/lock.h
cvs rdiff -u -r1.32 -r1.33 src/sys/arch/vax/include/lock.h
cvs rdiff -u -r1.28 -r1.29 src/sys/arch/x86/include/lock.h

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