On Fri, Aug 12, 2016 at 07:04:52PM +0200, Luis R. Rodriguez wrote: > Alright, how's this new description: > > diff --git a/init/Kconfig b/init/Kconfig > index cac3f096050d..73e4890c24c4 100644 > --- a/init/Kconfig > +++ b/init/Kconfig > @@ -53,6 +53,34 @@ config CROSS_COMPILE > need to set this unless you want the configured kernel build > directory to select the cross-compiler automatically. > > +config BUILD_AVOID_BITROT > + bool "Always force building specially annotated targets" > + default n > + help > + If enabled then the the special table-* Makefile targets will always > + be forced to be compiled even if their respective CONFIG_ option has > + been disabled, but its objects will only be linked in if the same > + respective CONFIG_ option has been enabled. This helps avoid code > + bit rot issues, use for these targets should be carefully considred > + by maintainers. You can safely enable this option at the expense of > + increasing compile time. Enabling this option helps avoid code bit > + rot by taking advantage of the facilities provided and enabled by > + using linker tables documented under: As a kernel developer I have _no_ idea what this is trying to say at all, sorry. What is a "specially annotated target"? Who is forcing it to be built? What does it mean if it isn't built? > + > + include/linux/tables.h > + > + The special targets supported are: > + > + o table-obj-y > + o table-lib-y What does this mean to me as a developer? What does it mean to a user who wants to figure out if it should be enabled or not? > + > + Say Y if you have a decent build machine and would like to help test > + building code for more subsystems. Say N if you do you not have a > + good build machine or only want to compile what you've enabled for > + your kernel. How does this test different subsystems? How does disabling it not test them? Why would I care either way? > + > + Enabling this option never increases the size of your kernel. Then what does it do? Just burn electricity for no reason? totally confused... greg k-h -- To unsubscribe from this list: send the line "unsubscribe linux-kbuild" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
