Date: Sat, 4 Sep 2010 17:27:48 +0000 (UTC) From: Nathan Whitehorn <nwhitehorn@FreeBSD.org> To: src-committers@freebsd.org, svn-src-user@freebsd.org Subject: svn commit: r212212 - user/nwhitehorn/ps3/powerpc/powerpc Message-ID: <201009041727.o84HRmNt025473@svn.freebsd.org>
next in thread | raw e-mail | index | archive | help
Author: nwhitehorn Date: Sat Sep 4 17:27:48 2010 New Revision: 212212 URL: http://svn.freebsd.org/changeset/base/212212 Log: It does not make sense to allocate 30MB of physical memory for bounce pages on low energy machines. On a PS3, 15% of the available physical memory was going into bounce page reservations. Instead, cap the number at 2.5% of physical memory or 30MB, whichever is smaller. Modified: user/nwhitehorn/ps3/powerpc/powerpc/busdma_machdep.c Modified: user/nwhitehorn/ps3/powerpc/powerpc/busdma_machdep.c ============================================================================== --- user/nwhitehorn/ps3/powerpc/powerpc/busdma_machdep.c Sat Sep 4 17:04:34 2010 (r212211) +++ user/nwhitehorn/ps3/powerpc/powerpc/busdma_machdep.c Sat Sep 4 17:27:48 2010 (r212212) @@ -53,7 +53,7 @@ __FBSDID("$FreeBSD$"); #include <machine/bus.h> #include <machine/md_var.h> -#define MAX_BPAGES 8192 +#define MAX_BPAGES MIN(8192, physmem/40) struct bounce_zone;
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?201009041727.o84HRmNt025473>