On 06.09.23 17:08, Jules Maselbas wrote: > This change will select the arm64 BCJ filter for aarch64 instead of > the arm filter which was always selected for arm based architectures. > > The selected filter is also tested, by looking if it is present in > the long help message of xz, this is because the arm64 BCJ filter is > a recent addition to xz. > > Signed-off-by: Jules Maselbas <jmaselbas@xxxxxxxx> How much of an improvement is BCJ=--arm over BCJ=""? I wonder if we should fallback from --arm64 to --arm. Cheers, Ahmad > --- > scripts/xz_wrap.sh | 5 ++++- > 1 file changed, 4 insertions(+), 1 deletion(-) > > diff --git a/scripts/xz_wrap.sh b/scripts/xz_wrap.sh > index 7a2d372f48..5b5f3adcff 100755 > --- a/scripts/xz_wrap.sh > +++ b/scripts/xz_wrap.sh > @@ -16,8 +16,11 @@ case $SRCARCH in > x86) BCJ=--x86 ;; > powerpc) BCJ=--powerpc ;; > ia64) BCJ=--ia64; LZMA2OPTS=pb=4 ;; > - arm) BCJ=--arm ;; > + arm) BCJ=--arm$S64 ;; > sparc) BCJ=--sparc ;; > esac > > +# clear BCJ filter if unsupported > +xz -H | grep -q -- $BCJ || BCJ= > + > exec xz --check=crc32 $BCJ --lzma2=$LZMA2OPTS,dict=32MiB -- Pengutronix e.K. | | Steuerwalder Str. 21 | http://www.pengutronix.de/ | 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |
