[OE-core] [PATCH v2 0/1] busybox: update to 1.19.3
Anders Darander
anders at chargestorm.se
Wed Nov 23 08:59:07 UTC 2011
* Saul Wold <sgw at linux.intel.com> [111122 21:36]:
> On 11/22/2011 06:34 AM, Anders Darander wrote:
> > This updates busybox to the latest stable, 1.19.3.
> > Among other things, there should be rudimentary support in syslogd for
> > systemd, by enabling CONFIG_FEATURE_SYSTEMD.
> How much size does this add to busybox by having it enabled by default?
Enabling FEATURE_SYSTEMD in busybox costs 192 bytes in my tests in
qemux86.
> Is it possible to conditional add a config fragment if systemd is
> enabled ad the DISTRO/IMAGE_FEATURE level?
> More info is required.
> > It has been tested and verified on qemux86 and on our local arm-based system.
> > However, the patch busybox-udhcpc-no_deconfig.patch has been modified to
> > apply, but hasn't really been tested. As we're currently mostly running static
> > configurations, we've only verified that udhcpc works to the extent that we
> > get the network up and running, not how it behaves during dhcp renewal.
> > Thus I'm starting this as an RFC.
> > Changes:
> > v2: * Checked the new defconfig (removed settings implying CFLAGS and
> > ARCH). The new defconfig should be as close as possible to the old one,
> > with the exception of some new utils/options.
> Can you clearly enumerate what new utils and options and what their size
> impact on the busybox image is.
Apart from the FEATURE_SYSTEMD discussed above, these are the other new
options that I kept the new busybox default on (i.e. these are enabled,
while I turned of quite a few other options that automatically got
enabled). All costs are evaluted using qemux86, and the busybox binary
size is checked in the packages-split/busybox/bin directory.
I don't mind disabling any of these feature in a v3, if
desired/requested. Anyway, I'm running a completely custom config for my
normal uses...
FEATURE_RTMINMAX, support RTMIN[+n] RTMAX[-n] signals, claimed to cost
~250 bytes
FEATURE_REVERSE_SEARCH claimed to cost ~0.5k
FEATURE_SKIP_ROOTFS ignore rootfs entry in mount table (tools like df
etc will ignore it).
FEATURE_AR_CREATE, enable ar to create files, ~2.5k
FEATURE_SEAMLESS_XZ enable xz compression in tar, no measured cost.
XZ and UNXZ, enable xz compression, 8k
FGCONSOLE, print active console number, 128 bytes
FEATURE_LOADFONT_PSF2, FEATURE_LOADFONT_RAW, cost 576 bytes
FEATURE_VI_ASK_TERMINAL, last resort to find terminal size, 352 bytes
BLOCKDEV, perform some ioctls with block devices, cost 480 bytes
FDISK_SUPPORT_LARGE_DISKS, is disabled, it no longer wants to play with
LFS (both were enabled previously).
FEATURE_MOUNT_LOOP_CREATE, create new loopback devices if needed,
couldn't see any cost
FEATURE_WGET_TIMEOUT, no visible cost
FEATURE_SH_HISTFILESIZE, use $HISTFILESIZE (still max limited by
config), no visible cost
FEATURE_SYSLOGD_CFG, support syslog.conf, no visible cost
FEATURE_SYSLOGD_READ_BUFFER_SIZE, defines the size of the read buffer,
not measured
FEATURE_KLOGD_KLOGCTL, let klogd use the klogctl() interface, no visible
cost
Cheers,
Anders
--
Anders Darander
ChargeStorm AB / eStorm AB
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