On Fri, Aug 12, 2016 at 08:50:11AM +0200, Luis R. Rodriguez wrote: > On Fri, Aug 12, 2016 at 07:23:03AM +0200, Borislav Petkov wrote: > > On Fri, Aug 12, 2016 at 05:51:29AM +0200, Luis R. Rodriguez wrote: > > > OK I've added CONFIG_BUILD_AVOID_BITROT. > > > > What does that do? > > > Enabling it allows the forced compilation chosen by maintainers. > Otherwise forced compilations with the new special targets are > ignored. Nice. > I've gone with table-obj-y and table-lib-y as we have > to support both lib-y and obj-y respective targets. > > diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug > index 33e2966dd741..7893e3b8da82 100644 > --- a/lib/Kconfig.debug > +++ b/lib/Kconfig.debug > @@ -1895,6 +1895,30 @@ config PROVIDE_OHCI1394_DMA_INIT > > See Documentation/debugging-via-ohci1394.txt for more information. > > +config BUILD_AVOID_BITROT > + bool "Always force building specially annotated" ...annotated targets" > + default y > + 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 slightly. Enabling this option helps avoid s/slightly// :-) > + code bit rot by taking advantage of the facilities provided and > + enabled by using linker tables documented under: > + > + include/linux/tables.h > + > + The special targets supported are: > + > + o table-obj-y > + o table-lib-y > + > + Say Y unless you are a grumpy maintainer and don't trust other > + maintainer's judgements on what code should always get compiled. ... or you're running a tiny-config setup ... or you're an embedded, resource-constrained person ... or you simply don't want to have stuff which is forcibly enabled on you even if you're never going to need it ... I got a million o'those :-) Thanks. -- Regards/Gruss, Boris. ECO tip #101: Trim your mails when you reply. -- -- To unsubscribe from this list: send the line "unsubscribe linux-ia64" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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