CVS log for src/sys/arch/amd64/include/types.h

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Default branch: MAIN
Current tag: simonb-wapbl

Revision 1.26 / (download) - annotate - [select for diffs], Thu Feb 21 16:31:13 2008 UTC (16 years, 2 months ago) by ad
Branch: MAIN
CVS Tags: yamt-pf42-baseX, yamt-pf42-base4, yamt-pf42-base3, yamt-pf42-base2, yamt-pf42-base, yamt-pf42, yamt-nfs-mp-base2, yamt-nfs-mp-base, yamt-lazymbuf-base15, yamt-lazymbuf-base14, wrstuden-revivesa-base-4, wrstuden-revivesa-base-3, wrstuden-revivesa-base-2, wrstuden-revivesa-base-1, wrstuden-revivesa-base, wrstuden-revivesa, simonb-wapbl-nbase, simonb-wapbl-base, simonb-wapbl, matt-mips64-base2, matt-armv6-nbase, keiichi-mipv6-nbase, keiichi-mipv6-base, hpcarm-cleanup-nbase, hpcarm-cleanup-base, haad-dm-base1, ad-socklock-base1
Branch point for: yamt-nfs-mp, mjf-devfs2, haad-dm
Changes since 1.25: +2 -1 lines
Diff to previous 1.25 (colored)

#define __HAVE_ATOMIC_AS_MEMBAR, indicating that:

- atomic_cas_ni() does an implicit membar_exit()
- all other atomic operations do an implicit membar_sync()

While this might seem kind of arbitrary it's the basis for some important
optimizations.

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