ac100 team mailing list archive

[Marc Dietrich <marvin24@xxxxxx>]

On Wednesday 11 January 2012 02:00:53 Jani Monoses wrote:
> Thank,
> Just to clarify, when you say 'not needed, kill it'  you mean it
> should be disabled in paz00_defconfig right? :)

yeah, I meant not to take it over to ubuntu. Sorry for the confusion.

> The Ubuntu packaging branch does not have them enabled

ok, but enable the erratum please in ubuntu kernels. Rest is more or less 
consmetic.

Thanks!

Marc

> Jani
> 
> On Tue, Jan 10, 2012 at 7:41 PM, Marc Dietrich <marvin24@xxxxxx> wrote:
> > On Tuesday 10 January 2012 17:16:26 Jani Monoses wrote:
> >> Hello,
> >> 
> >> There are still quite a few config options that were never synced up
> >> or were dropped compared to the default paz00 config in the git ac100
> >> kernel tree.
> >> 
> >> I ran this command locally
> >> diff -u <(grep "^CONF" arch/arm/configs/paz00_defconfig|cut -f1
> >> -d=|sort) <(grep "^CONF" debian.linaro/config/config.common.ubuntu|cut
> >> -f 1 -d=|sort ) |grep "-"
> >> 
> >> and got this:
> >> 
> >> Any in particular that should absolutely be there? I could just add
> >> them all I guess but wanted to make sure they are all intended and to
> >> know why
> >> certain settings are on. For istance I am not sure the various
> >> debugging options are set in other Ubuntu kernels and I want to keep
> >> the delta low
> >> DEV_DM had build issues when I switched to the 3.0 tree, and have not
> >> tried since, hence it being off.
> >> IIRC PCI was not needed either but it is enabled by default in
> >> defconfig.
> >> 
> >> Any input is welcome :)
> >> 
> >> -CONFIG_ARM_ERRATA_751472
> > 
> > Our SoC is affected by this erratum, so it should be enabled
> > 
> >> -CONFIG_BATTERY_BQ20Z75
> > 
> > We don't have this, kill it.
> > 
> >> -CONFIG_BLK_DEV_DM
> >> -CONFIG_BOOTPARAM_HUNG_TASK_PANIC
> >> -CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC
> > 
> > I think these can be killed
> > 
> >> -CONFIG_CHARGER_GPIO
> > 
> > We don't have this, kill it.
> > 
> >> -CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND
> > 
> > I think we want PERFORMANCE here, ondemand will be actived later in the
> > boot process.
> > 
> >> -CONFIG_CRYPTO_USER_API_HASH
> >> -CONFIG_CRYPTO_USER_API_SKCIPHER
> > 
> > kill these
> > 
> >> -CONFIG_DEBUG_DEVRES
> >> -CONFIG_DEBUG_SPINLOCK
> >> -CONFIG_DEBUG_SPINLOCK_SLEEP
> > 
> > These are not necessary.
> > 
> >> -CONFIG_DM_VERITY
> >> -CONFIG_DM_VERITY_CHROMEOS
> > 
> > What's that? Maybe ChromeOS specific -> kill
> > 
> >> @@ -90,236 +393,1245 @@
> >> -CONFIG_HIGHMEM
> > 
> > not sure about this one, wait for an expert ...
> > 
> >> -CONFIG_KERNEL_LZO
> > 
> > yes, I prefer LZO over GZ because it uncompresses faster AFAIK,
> > increasing boot speed. I leave it up to you.
> > 
> >> -CONFIG_KEYS_DEBUG_PROC_KEYS
> >> -CONFIG_LOCKUP_DETECTOR
> > 
> > debugging stuff ... not needed for release
> > 
> >> -CONFIG_MEDIA_CONTROLLER
> > 
> > looks like our camera does not need it -> kill
> > 
> >> -CONFIG_MMC_SDHCI_OF
> > 
> > well, no OpenFirmware yet -> kill
> > 
> >> -CONFIG_MODULE_FORCE_UNLOAD
> >> -CONFIG_NET_KEY
> >> -CONFIG_NFS_FSCACHE
> >> -CONFIG_NFS_USE_NEW_IDMAPPER
> >> -CONFIG_NFS_V4_1
> >> -CONFIG_NL80211_TESTMODE
> >> -CONFIG_PREEMPT_VOLUNTARY
> >> -CONFIG_RD_XZ
> >> -CONFIG_SCSI_SPI_ATTRS
> >> -CONFIG_SECCOMP_FILTER
> >> -CONFIG_SERIAL_OF_PLATFORM
> >> -CONFIG_SLAB
> > 
> > well, I leave these up to you. Personally, I like nfs ...
> > SERIAL_OF_PLATFORM is not needed
> > and memory allocator, preemption ... ask someone else ;-)
> > 
> >> -CONFIG_TEGRA_DEBUG_UARTB
> > 
> > mmh, should be UARTA
> > 
> >> -CONFIG_TEGRA_PCI
> > 
> > please leave this on (for powermgnmt reasons)
> > 
> >> -CONFIG_USB_DEVICEFS
> >> -CONFIG_USB_MON
> > 
> > double kill
> > 
> >> -CONFIG_USB_OTG
> > 
> > mmh, I don't know if it is working. Well if someone wants to try, he
> > need to build his own kernel anyway -> zap it
> > 
> >> -CONFIG_VIDEO_HELPER_CHIPS_AUTO
> > 
> > I wanted to get rid of the various tuners. In fact we need none of them.
> > But somehow this didn't worked, kernel still compiles the tuners. Maybe
> > try without?
> > 
> > 
> > Marc