Hello all, it won't be too long until 3.14 is out and I want to address a topic that has been bugging me for a while. Our kernel includes everything and the kitchensink. I have no problem with delivering drivers that can be built modular, but there are other things that have an unknown impact on everyone. I want to trim our kernel down to what we actually support. 1) Once we agreed to disable one LSM, everyone else said "we can enable LSM XYZ, too". And so we did. Right now, we enable SELinux, SMACK, Tomoyo, AppArmor and Yama, although we don't support the userspace for any of those. I propose to drop all of them. 2) We patch our kernel to allow enabling CHECKPOINT_RESTORE without enabling CONFIG_EXPERT. I have no idea what the impact of this option is, other than that it was requested in order to support some tool that can freeze and save single processes resume them later. I am generally sceptical towards options that require CONFIG_EXPERT, so I propose dropping this one, too. 3) We enable tons of debug options in the "Kernel Hacking" section, many of which have a "small performance impact". I'd like to get rid of those that we don't need (I didn't go through all of them yet). What I'd like is a discussion where people suggest more things that could or should be dropped, and tell me what is absolutely needed and why. I hope that such a discussion makes it clearer to me how I should proceed. Regards Thomas
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