Date: Thu, 23 Apr 2009 20:24:19 +0000 (UTC) From: John Baldwin <jhb@FreeBSD.org> To: cvs-src-old@freebsd.org Subject: cvs commit: src/sys/amd64/amd64 busdma_machdep.c src/sys/arm/arm busdma_machdep.c src/sys/i386/i386 busdma_machdep.c Message-ID: <200904232026.n3NKQ5X9059127@repoman.freebsd.org>
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jhb 2009-04-23 20:24:19 UTC
FreeBSD src repository
Modified files:
sys/amd64/amd64 busdma_machdep.c
sys/arm/arm busdma_machdep.c
sys/i386/i386 busdma_machdep.c
Log:
SVN rev 191438 on 2009-04-23 20:24:19Z by jhb
Reduce the number of bounce zones (and thus the number of bounce pages
used in some cases):
- Ignore DMA tag boundaries when allocating bounce pages. The boundaries
don't determine whether or not parts of a DMA request bounce. Instead,
they are just used to carve up segments.
- Allow tags with sub-page alignment to share bounce pages since bounce
pages are always page aligned.
Reviewed by: scottl (amd64)
MFC after: 1 month
Revision Changes Path
1.91 +2 -8 src/sys/amd64/amd64/busdma_machdep.c
1.47 +5 -11 src/sys/arm/arm/busdma_machdep.c
1.99 +2 -8 src/sys/i386/i386/busdma_machdep.c
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