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(parent: 5bf6ab8) | patch
Changed the implementation of the primitives to guarantee atomicity
authorAlan Cox <alc@FreeBSD.org>
Tue, 13 Jul 1999 03:32:17 +0000 (03:32 +0000)
committerAlan Cox <alc@FreeBSD.org>
Tue, 13 Jul 1999 03:32:17 +0000 (03:32 +0000)
commite58bb1c45349c6ebb1ffe234f3bc42a952381d21
treeffa71a2d07f76370f8b0780a195a2f98163c0a26tree | snapshot
parent5bf6ab83691ec9bdd8ba88e71cdbff01f891485ecommit | diff
Changed the implementation of the primitives to guarantee atomicity
with respect to interrupts on UP systems.  (The upgrade from gcc 2.7.x
to egcs 1.1.2 produced at least one non-atomic code sequence in
swap_pager_getpages.)

In addition, the primitives are now SMP-safe, but only on SMPs.  (For
portability between SMPs and UPs, modules are compiled with the SMP-safe
versions.)

Submitted by: dillon and myself
Reviewed by: bde
sys/amd64/include/atomic.h diff | blob | history
sys/i386/include/atomic.h diff | blob | history
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