From: Arnd B. <ar...@ar...> - 2013-05-23 08:59:21
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On Thursday 23 May 2013, Geert Uytterhoeven wrote: > > -config BUG > > - bool "BUG() support" if EXPERT > > - default y > > - help > > - Disabling this option eliminates support for BUG and WARN, reducing > > - the size of your kernel image and potentially quietly ignoring > > - numerous fatal conditions. You should only consider disabling this > > - option for embedded systems with no facilities for reporting errors. > > - Just say Y. > > ... It's about reducing memory size on devices where you can't show bug or > warning messages. > > > So need get rid of 'CONFIG_BUG', and let it always enabled everywhere. > > So please keep it. Agreed. The one annoying property of disabling BUG() support is that it causes a large number of build warnings since the compiler now has to assume that a lot of code is reachable when it is normally annotate as unreachable. When I do "randconfig" tests, I always turn on CONFIG_BUG because of this. Arnd |