Messages in this thread | | | Date | Wed, 6 Aug 2014 15:06:11 -0700 (PDT) | From | David Rientjes <> | Subject | Re: [PATCH] x86: Add "make tinyconfig" to configure the tiniest possible kernel |
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On Wed, 6 Aug 2014, Josh Triplett wrote:
> Since commit 5d2acfc7b974bbd3858b4dd3f2cdc6362dd8843a ("kconfig: make > allnoconfig disable options behind EMBEDDED and EXPERT") in 3.15-rc1, > "make allnoconfig" disables every possible config option. > > However, a few configuration options (CC_OPTIMIZE_FOR_SIZE, > OPTIMIZE_INLINING) produce a smaller kernel when turned on, and a few > choices exist (compression, highmem, allocator) for which a non-default > option produces a smaller kernel. > > Add a "tinyconfig" target, which starts from allnoconfig and then sets > these options to configure the tiniest possible kernel. This provides a > better baseline for embedded systems or efforts to reduce kernel size. >
I like it, the only comment that I have is that we already have a xenconfig patchset sitting around that adds a helper function for this functionality in the x86 Makefile that hasn't been merged yet.
The *config functionality is added in http://marc.info/?l=linux-kernel&m=140233900403377
and then used in http://marc.info/?l=linux-kernel&m=140233901403381 http://marc.info/?l=linux-kernel&m=140233904503428
and have been pending since June. I was going to ask Luis to rebase and resend, but perhaps you can send the first patch along as a predecessor to your patch and then let tinyconfig use build-virtconfig?
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