cgd performance is not as good as I was hoping (~4% improvement over
chacha_ref.c) but it should improve substantially more if we let the
cgd worker thread keep fpu state so we don't have to pay the cost of
isb and zero-the-fpu on every 512-byte cgd block.
The 4-blocks-at-a-time assembly helper is disabled for now; adapting
it to armv7 is going to be a little annoying with only 16 128-bit
vector registers.
(Should also do a fifth block in the integer registers for 320 bytes
at a time.)
1. "avail_start" and "start" were different, resulting in unreachable code in
uvm_page_physunload(), where the condition check "avail_start" < "end" fails.
The test has been fixed by setting "avail_start" and "start" to the same value.
2. If "start" is the address with end address being "start + 2", we can
unplug twice, the first paddr_t would be "start" and the second one would be
"start + 1". Modified the ATF_CHECK_EQ() to reflect these changes.
Reviewed by <cherry>
There is a condition check which failed for VM_PHYSSEG_MAX == 2 (not for
1 or 3 and above), in case of 2, pgs == slab + npages1 + npages3, so we
need to change ">" check to ">=" check.
Reviewed by <cherry>
This commit does not actually introduce the UVM_HOTPLUG option.
However it does provide developers a way to review, test and try out
the API.
To do this, please go to tests/sys/uvm/ and build and run the tests
there. The tests also have a set of basic load tests, to get a measure
of the performance penalties due to enabling the UVM_HOTPLUG option.
In order to build the tests you need to have at least done the
following in $SRC/
cd $SRC; $NBMAKE do-distrib-dirs includes
cd $SRC/lib/csu; $NBMAKE all install || exit
cd $SRC/external/gpl3/gcc/lib/libgcc/libgcc_s; $NBMAKE all install || exit
cd $SRC/external/gpl3/gcc/lib/libgcc/libgcc; $NBMAKE all install || exit
cd $SRC/lib/libc; $NBMAKE includes all install || exit
cd $SRC/lib/libpthread; $NBMAKE all install || exit
cd $SRC/lib/libm; $NBMAKE all install || exit
cd $SRC/external/gpl3/gcc/lib/libstdc++-v3/; $NBMAKE all install || exit
Once the development environment has these userspace libraries, one
can simple build using $NBMAKE and finally test the kernel API using
atf-run|atf-report
- The use.fs property is gone.
- Mark the tests/fs/t_create:attrs test as broken when using the default
unprivileged-user:_atf setting. This probably deserves a fix somehow
but I'm not sure at this point.
their work directory. The purpose is to be able to know which tests intend
to touch the file system and to allow a minor optimization in atf-run.
Define use.fs=true for all those tests requiring it. (This highlights that
some tests currently require modifying the file system but conceptually
they shouldn't be... which leaves room for further improvements/cleanups
later :-)
subcommands and the optional argument passing to them from the command
line.
Triggered by the modification of the run_rc_command function in rc.subr
to allow passing in extra parameters to the commands defined in rc.d
scripts.
