On Tue, 12 Jun 2018, Julien Grall wrote: > Hi Stefano, > > On 12/06/18 01:50, Stefano Stabellini wrote: > > On Tue, 5 Jun 2018, Julien Grall wrote: > > > Hi Stefano, > > > > > > On 04/06/18 18:24, Stefano Stabellini wrote: > > > > Add a tiny kconfig configuration. Enabled NULL and Credit schedulers. > > > > Support only 8 cpus. It only carries non-default options (use make > > > > > > I don't see where 8 CPUs would only be supported as the default value is > > > 128 > > > cpus. > > I need to update the commit message reflecting the changes to the patch > > > > > > > > olddefconfig to produce a complete .config file). > > > > > > With all the series I did the following things: > > > 1) copy tiny.config to .config > > > 2) make olddefconfig > > > 3) make menuconfig and select QEMU > > > > > > After 1) the numbers of CPUs are set to 128. After 3) I would expect the > > > number of CPUs to go down to 8. Unfortunately this is not the cases. > > > > > > So your command does not seem to be enough here. > > > > NR_CPUS cannot go down. It is a limitation of Kconfig, similar to the > > fact that option cannot be de-selected. > > > > It is not 1) that sets NR_CPUS to 128, it would be 2) above. For this to > > work you have to skip 2) and just do: > > > > - copy tiny.config to .config > > - make menuconfig and select QEMU > > Well I suggested a way during one of our recent chat and I am a bit surprised > this was not considered here. > > For reminder, the way was to provide a makefile target that will select tiny > and the platform at the same time. > > make tiny_defconfig PLAT=qemu
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