Messages in this thread | | | Date | Tue, 31 Mar 2015 19:45:48 -0700 | From | Guenter Roeck <> | Subject | Re: linux-next: Tree for Mar 31 (build failures and culprits) |
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On 03/31/2015 07:24 PM, Guenter Roeck wrote: > On 03/31/2015 04:42 PM, Stephen Rothwell wrote: >> Hi Greg, >> >> On Wed, 1 Apr 2015 01:07:49 +0200 Greg Kroah-Hartman <gregkh@linuxfoundation.org> wrote: >>> >>> On Tue, Mar 31, 2015 at 09:16:40AM -0700, Guenter Roeck wrote: >>>> >>>> alpha:allmodconfig >>>> mips:allmodconfig >>>> >>>> samples/kdbus/kdbus-workers.c: In function ‘prime_new’: >>>> samples/kdbus/kdbus-workers.c:930:18: error: ‘__NR_memfd_create’ undeclared >>>> (first use in this function) >>>> p->fd = syscall(__NR_memfd_create, "prime-area", MFD_CLOEXEC); >>>> >>>> Looks like the kdbus example never worked for the affected architectures. >>>> I don't build allmodconfig for all architectures, so other architectures >>>> may be affected as well. >>> >>> You need 3.17 kernel headers to have memfd_create, not much the kdbus >>> test code can do about that. You might want to update the kernel >>> headers for these build boxes. >>> >>> Or have we not hooked up memfd for alpha and mips? >> >> alpha has no definition for __NR_memfd_create and doesn't use >> asm-generic/unistd.h. >> >> mips has a definition for __NR_memfd_create if _MIPS_SIM == >> _MIPS_SIM_ABI32, _MIPS_SIM_ABI64 or _MIPS_SIM_NABI32 (is there any >> other alternative?). >> > > Guess you are saying that those examples won't build even with a > newer toolchain. Good that I already decided not to re-build my > toolchains ;-). > > Now I am left with the question if the samples build should be > masked for alpha and mips, or if I should drop building samples > from my 'allmodconfig' builds. I think I'll do the latter; > there seems to be an expectation that samples are built with > a recent toolchain, and I can not keep rebuilding toolchains for > the rest of my life. >
Weird - the kdbus sample doesn't have its own configuration option, unlike other samples. So it's all or nothing for alpha and mips.
Guenter
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