Date: Sun, 7 Jul 2002 21:24:26 -0700 (PDT) From: Peter Wemm <peter@FreeBSD.org> To: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sys/alpha/alpha pmap.c src/sys/i386/i386 pmap.c src/sys/ia64/ia64 pmap.c src/sys/powerpc/powerpc pmap.c src/sys/sparc64/sparc64 pmap.c src/sys/vm pmap.h vm_zeroidle.c Message-ID: <200207080424.g684OQxV008448@freefall.freebsd.org>
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peter 2002/07/07 21:24:26 PDT
Modified files:
sys/alpha/alpha pmap.c
sys/i386/i386 pmap.c
sys/ia64/ia64 pmap.c
sys/powerpc/powerpc pmap.c
sys/sparc64/sparc64 pmap.c
sys/vm pmap.h vm_zeroidle.c
Log:
Add a special page zero entry point intended to be called via the single
threaded VM pagezero kthread outside of Giant. For some platforms, this
is really easy since it can just use the direct mapped region. For others,
IPI sending is involved or there are other issues, so grab Giant when
needed.
We still have preemption issues to deal with, but Alan Cox has an
interesting suggestion on how to minimize the problem on x86.
Use Luigi's hack for preserving the (lack of) priority.
Turn the idle zeroing back on since it can now actually do something useful
outside of Giant in many cases.
Revision Changes Path
1.97 +15 -0 src/sys/alpha/alpha/pmap.c
1.335 +36 -2 src/sys/i386/i386/pmap.c
1.68 +16 -0 src/sys/ia64/ia64/pmap.c
1.42 +11 -0 src/sys/powerpc/powerpc/pmap.c
1.68 +16 -0 src/sys/sparc64/sparc64/pmap.c
1.48 +1 -0 src/sys/vm/pmap.h
1.11 +9 -7 src/sys/vm/vm_zeroidle.c
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