Cheng Renquan writes: > From: Cheng Renquan <crquan@xxxxxxxxx> > > kbuild-menuconfig-display-depend-value.patch > > Sometimes when configuring need to disable some unused item, but the item is > selected by many other items, it's hard to find the real dependency which > selected it, This patch add every symbol's value accompanied to make it > possible to find the real dependency easily. > > An example is CONFIG_RFKILL, > > ---------------------- RF switch subsystem support ---------------------- > | CONFIG_RFKILL: | > | | > | Say Y here if you want to have control over RF switches | > | found on many WiFi and Bluetooth cards. | > | | > | To compile this driver as a module, choose M here: the | > | module will be called rfkill. | > | | > | Symbol: RFKILL [=m] | > | Prompt: RF switch subsystem support | > | Defined at net/rfkill/Kconfig:4 | > | Depends on: NET [=y] | > | Location: | > | -> Networking support (NET [=y]) | > | Selected by: IWLCORE [=n] && NETDEVICES [=y] && !S390 [=S390] && PC | > | | > ----------------------------------------------------------------( 99%)--- I like this concept, but I'd like to see it supported with make oldconfig. Let's say I copy a .config from kernel X into kernel Y (Y>X) and make oldconfig. Sometimes the new kernel will enable some previously disabled option, and it would be very useful to see WHY. To take a concrete example, in my 2.6.30 .config I had: CONFIG_DRM=m CONFIG_DRM_RADEON=m # CONFIG_FB is not set which when oldconfig'd in 2.6.31-rc changed to CONFIG_DRM=m CONFIG_DRM_RADEON=m CONFIG_FB=m (+ some more FB stuff) In this case it would have been nice to get an explanation that DRM_RADEON was responsible for (wrongly, IMO) selecting FB. Something like # CONFIG_FB was selected by CONFIG_DRM_RADEON CONFIG_FB=m These comments should only be emitted for options added by select that previously were absent or 'is not set'. /Mikael -- 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
