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1. 'CONFIG_XOR_BLOCKS' last val (m) and .config val (y) do not match
* Previously we tried to configure this as 'm' to reduce the kernel
footprint, but it is selected indirectly as 'y' via:
CONFIG_MD_RAID456 (y, set by Intel x86 BSP)
CONFIG_ASYNC_XOR
CONFIG_XOR_BLOCKS
2. 'CONFIG_CRC_ITU_T' last val (m) and .config val (y) do not match
* Upstream 'nfc-generic.cfg' sets this to 'm', but our
'mmc_sd_y.cfg' selects it as 'y' via:
CONFIG_MMC_SPI (y)
CONFIG_CRC_ITU_T
3. 'CONFIG_ISDN_CAPI' last val (y) and .config val (n) do not match
* Upstream enables ISDN, but our kernel footprint reduction
disables one of its dependencies (CONFIG_BT=n), make it explicit.
4. 'CONFIG_MEDIA_PLATFORM_SUPPORT' last val (y) and .config val (n) do
not match
* Upstream enables it, but our kernel footprint reduction
disables one of its dependencies (CONFIG_MEDIA_SUPPORT=n), make
it explicit.
5. 'CONFIG_*' (many similar options, all depending on CONFIG_IIO)
last val (m) and .config val (n) do not match
* Upstream enables them, but our kernel footprint reduction
disables one of their dependencies (CONFIG_IIO=n) via
'accelerometers_n.cfg';
* create a new configuration fragment ('iio_n.scc') for this and
gather all IIO dependencies that we want disabled to make them
explicit (moving CONFIG_IIO=n from 'accelerometers_n.cfg' to
'iio_n.cfg');
* 'iio_n.cfg' contains all configuration from yocto-kernel-cache
'iio.cfg' (changing 'm' and/or 'y' to 'n'), including the options
that were previously handled by existing features in:
- features/accelerometers/accelerometers_n.cfg;
- features/inclinometer/inclinometer_n.cfg;
- features/hidsensor/hidsensor_n.cfg;
* 'iio_n.scc' replaces the 3 old fragments, especially since they
were always included together;
6. 'CONFIG_INPUT_SOC_BUTTON_ARRAY' last val (m) and .config val (n) do
not match
* Upstream enables it, but our kernel footprint reduction
disables one of its dependencies (CONFIG_KEYBOARD_GPIO=n), make
it explicit.
7. 'CONFIG_INTEL_SOC_PMIC' last val (y) and .config val (n) do
not match
* Upstream enables it, but our 'i2c_m.cfg' (when added to
KERNEL_FEATURES) breaks two of its dependencies (CONFIG_I2C=y,
I2C_DESIGNWARE_PLATFORM=y), make it explicit.
8. 'CONFIG_TYPEC_TCPM' last val (m) and .config val (n) do not match
'CONFIG_TYPEC_TCPCI' last val (m) and .config val (n) do not match
* Upstream enables them, but our kernel footprint reduction
disables one of their dependencies (CONFIG_TYPEC=n), make
it explicit.
9. 'CONFIG_SERIO_I8042' last val (m) and .config val (n) do not match
* We enable the SERIO_I8042 (wrongfully?) via 'keyboard_n.scc',
but its dependency (CONFIG_SERIO) is already disabled by both
'input_n.scc' and 'serio_n.scc'.
* re-order scc fragments to silence the warning without changing
any actual configuration fragment;
10. 'CONFIG_PRINTER' last val (m) and .config val (n) do not match
* Upstream enables it, but our kernel footprint reduction
disables one of its dependencies (CONFIG_PARPORT=n), make
it explicit.
11. 'CONFIG_USB_NET_RNDIS_HOST' last val (m) and .config val (n) do
not match
* Upstream enables it, but our kernel footprint reduction
disables one of its dependencies (CONFIG_USBNET=n), make
it explicit.
12. 'CONFIG_USB_GADGET_VBUS_DRAW' last val (2) and .config val (n) do
not match (same with 'CONFIG_USB_GADGET_STORAGE_NUM_BUFFERS')
* Both depend on 'USB_GADGET'.
Change-Id: Id17c54348adbedcd110f0e4a456763797834c6a8
Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>
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1. CONFIG_UNWINDER_FRAME_POINTER
New in kernel v4.15+. Since we want to disable FRAME_POINTER,
this one should be disabled too (or it will select FRAME_POINTER).
Adding it will lead to honoring our FRAME_POINTER setting.
Note that having a kernel unwinder is mandatory, so only disabling
UNWINDER_FRAME_POINTER will automatically select UNWINDER_ORC on
x86_64.
Set CONFIG_UNWINDER_GUESS=y instead to avoid runtime overhead with
the cost of having less precise debug information on kernel crashes.
2. CONFIG_REGMAP
Selected by I2C_DESIGNWARE_CORE, which we enabled as a load-module.
Adding it to i2c_m.cfg only silences the kaudit warning, as it is
already selected.
3. CONFIG_BLK_DEV_SR
reduced_kernel_footprint_guest: Remove config cdrom_n.scc, which is
used as dependency by other features (cloud-init NoCloud on CDROM).
Change-Id: I03f5f19c6ea535dfe90cae2068ffbdc99b07f8f4
Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>
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