From: Hans de Goede on gitlab.com https://gitlab.com/cki-project/kernel-ark/-/merge_requests/2832#note_1684724074
So @hpa1 created this script at my request. Looking at the discussions above it seems there are 2 separate discussion points: 1. Why disable these drivers 2. Why use a script Let me try to explain 2. here in reply to "I believe Fedora purposely enables all drivers for an arch". There are a lot of drivers enabled in the Fedora x86 kernels for components which are simply never used in x86 designs and disabling these drivers gives a number of benefits: 1. Significantly reduce the kernel package size saving mirror diskspace and bandwidth 2. Significantly reduce the diskspace used by /lib/modules 3. Reduce kernel build times "I believe Fedora purposely enables all drivers for an arch" suggests that the kernel Kconfig itself does a good job of only allowing drivers to be build on archs where the drivers are actually relevant, which unfortunately most Kconfig entries do not even not try. E.g. there are a ton of drivers for i2c and spi attached chips which do not support ACPI enumeration, yet barring some special exceptions ACPI enumeration is the only way for an i2c or spi device to which such a driver can bind can be instantiated on x86. So compiling i2c or spi drivers which do not have an acpi_match_table is basically useless since there never will be e.g an i2c_client instantiated to which these drivers can bind. So basically the idea here is to limit the kernel configuration from "enables all drivers for an arch" to "enable all drivers which can actually be used on an arch". The drivers/iio/accel config changes here are really just an example of what I have in mind to do for many different drivers subdirs and in this example it reduces the amount of .ko files build under drivers/iio/accel from 33 to just 12. There are other cases like other iio subdirs, but also drivers/regulators where I plan to submit similar changes. Which together should result in significant savings. -- _______________________________________________ kernel mailing list -- [email protected] To unsubscribe send an email to [email protected] Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/[email protected] Do not reply to spam, report it: https://pagure.io/fedora-infrastructure/new_issue
