On 2011-02-09 Jan Beulich wrote: > Having architecture specific decoders enabled by default makes little > sense - only at most one of the respective encoders is being used, > and hence the other decoders are not necessary in the common > (default) case. It can be nice to be able to mount a Squashfs image containing ARM binaries on a x86 desktop, but maybe that isn't important enough to keep all BCJ filters enabled by default. If they are not enabled by default, I think "if EXPERT" needs to be removed from those options too. For bigger size savings, it doesn't seem too useful to have five decompressors enabled by default (and behind "if EXPERT") for initramfs. I added XZ to that list to be consistent with the existing methods, but it wasn't the best thing to do. Bzip2 and LZMA are completely __init, but most of the gzip, LZO, and XZ code for initramfs is not __init. They pull zlib_inflate, lzo_decompress, xz_dec, and crc32 modules into the kernel. I think gzip and LZO support for initramfs should be enough by default, because bzip2, LZMA, and XZ are slower to decompress. The compression ratio of initramfs doesn't matter much on desktop systems so the fast options are the best. Users of embedded systems will pick exactly one method anyway, ignoring the defaults. -- Lasse Collin | IRC: Larhzu @ IRCnet & Freenode -- To unsubscribe from this list: send the line "unsubscribe linux-kbuild" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
