Messages in this thread | | | Date | Wed, 6 Aug 2014 15:24:19 -0700 | From | Josh Triplett <> | Subject | Re: [PATCH] x86: Add "make tinyconfig" to configure the tiniest possible kernel |
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On Wed, Aug 06, 2014 at 03:06:11PM -0700, David Rientjes wrote: > 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?
Sure, no problem. I ended up modifying that patch a bit, but I included a mini-changelog in it noting that I based it on Luis's patch. Will send a 2-patch v2 series momentarily, in response to this mail.
- Josh Triplett
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