Kernel configuration changes #105
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Will this change ABI of the kernel? |
We only remove a few options in the kernel configuration (such as CONFIG_INPUT_JOYSTICK, etc.), so AFAIK this will not change the ABI of the kernel. |
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Can somebody take a look at this PR? |
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retest this please |
A friendly reminder: if somebody could look at this patch that would be appreciated, |
| CONFIG_NET_9P | ||
| CONFIG_DLM | ||
| CONFIG_QFMT_V1 | ||
| CONFIG_MTD |
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we do use CONFIG_MTD on some platforms. patch/0042-armhf-additional-configs.patch
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retest this please |
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retest this please |
The Debian kernel used with SONiC includes almost all available hardware that
can be found on a system using Linux. This increases considerably the time
needed to build the kernel Debian image. Since there are many drivers,
protocols or filesystems which will never be used on a switch, there is a
imple mechanism to remove kernel options which does not require creating a
kernel configuration patch. The options which need to be excluded from the
kernel are simply listed in a flat text file:
patch/kconfig-exclusions
Example:
CONFIG_REISERFS_FS
CONFIG_JFS_FS
CONFIG_XFS_FS
Similarly, there is a mechanism to include some kernel options by listing
these options into the flat text file:
patch/kconfig-inclusions
Example:
CONFIG_INT340X_THERMAL=m
CONFIG_LOG_BUF_SHIFT=18
If the files patch/kconfig-exclusions and patch/kconfig-inclusions exist,
they will be processed after all the kernel patches described in the patch
directory have been applied, exclusions being done before inclusions.
Also, the final kernel configuration will be checked to verify that:
- all options asked to be excluded are effectively not present in the kernel,
- and all options asked to be included are effectively present in the kernel,
using the exact type (module or buit-in) or string or number.
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Signed-off-by: Guohan Lu <[email protected]>
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patch/kconfig-exclusions
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| @@ -98,7 +98,6 @@ CONFIG_USB_EHSET_TEST_FIXTURE | |||
| CONFIG_USB_ISIGHTFW | |||
| CONFIG_USB_YUREX | |||
| CONFIG_USB_ATM | |||
| CONFIG_DMA_SHARED_BUFFER | |||
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@olivier-singla , check out this build failure. https://sonic-jenkins.westus2.cloudapp.azure.com/job/common/job/linux-kernel-buster-build-pr/33/
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[2020-06-03T13:27:52.659Z] debian/bin/buildcheck.py debian/build/build_amd64_none_amd64 amd64 none amd64 |
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@olivier-singla , ABI changed, need to fix the build. here is my plan, i think we can first merge the infrastructure in, and then, we can move the existing config patch into kconfig-inclusion and kconfig-exclusion, and then we can add additional trim from you. the infrastructure change is in pr #143 |
| | | Number of .ko modules | Modules size | | ||
| | ----------- | ----------- | ----------- | | ||
| | Before | 3448 | 196 MB | | ||
| | After | 1991 | 110 MB | |
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Please format (align) this for a monospace font.
| |CONFIG_USB_EHSET_TEST_FIXTURE | USB EHSET Test Fixture driver | Say Y here if you want to support the special test fixture device used for the USB-IF Embedded Host High-Speed Electrical Test procedure. | ||
| |CONFIG_USB_ISIGHTFW | iSight firmware loading support | This driver loads firmware for USB Apple iSight cameras | ||
| |CONFIG_USB_YUREX | USB YUREX driver support | Say Y here if you want to connect a YUREX to your computer's USB port. The YUREX is a leg-shakes sensor. | ||
| |CONFIG_USB_ATM | USB DSL modem support | Say Y here if you want to connect a USB Digital Subscriber Line (DSL) modem to your computer's USB port |
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Maybe apply this configuration change in Linux’ config, and then run make savedefconfig, and rename defconfig to defconfig.optimized.
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/easycla |
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The Debian kernel used with SONiC includes almost all available hardware that
can be found on a system using Linux. This increases considerably the time
needed to build the kernel Debian image. Since there are many drivers,
protocols or filesystems which will never be used on a switch, there is a
simple mechanism to remove kernel options which does not require creating a
kernel configuration patch. The options which need to be excluded from the
kernel are simply listed in a flat text file:
patch/kconfig-exclusions
Example:
Similarly, there is a mechanism to include some kernel options by listing
these options into the flat text file:
patch/kconfig-inclusions
Example:
If the files patch/kconfig-exclusions and patch/kconfig-inclusions exist,
they will be processed after all the kernel patches described in the patch
directory have been applied, exclusions being done before inclusions.
Also, the final kernel configuration will be checked to verify that:
using the exact type (module or buit-in) or string or number.