From mboxrd@z Thu Jan 1 00:00:00 1970 From: Guenter Roeck Subject: Re: linux-next: Tree for Mar 31 (build failures and culprits) Date: Tue, 31 Mar 2015 19:18:34 -0700 Message-ID: <551B557A.40805@roeck-us.net> References: <20150401000221.21961ecd@canb.auug.org.au> <20150331161640.GA16540@roeck-us.net> <20150331230749.GA6564@kroah.com> <1427844281.4256.3.camel@ellerman.id.au> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: In-Reply-To: <1427844281.4256.3.camel@ellerman.id.au> Sender: linux-kernel-owner@vger.kernel.org To: Michael Ellerman , Greg Kroah-Hartman Cc: Stephen Rothwell , linux-next@vger.kernel.org, linux-kernel@vger.kernel.org, Tony Lindgren , Felipe Balbi , Ard Biesheuvel , Russell King , Arnd Bergmann , Lad@roeck-us.net, Prabhakar , Thomas Gleixner , Daniel Mack , Mikko Perttunen , Thierry Reding List-Id: linux-next.vger.kernel.org On 03/31/2015 04:24 PM, Michael Ellerman wrote: > On Wed, 2015-04-01 at 01:07 +0200, Greg Kroah-Hartman 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 =E2=80=98prime_new=E2=80= =99: >>> samples/kdbus/kdbus-workers.c:930:18: error: =E2=80=98__NR_memfd_cr= eate=E2=80=99 undeclared >>> (first use in this function) >>> p->fd =3D syscall(__NR_memfd_create, "prime-area", MFD_CLOEXEC); >>> >>> Looks like the kdbus example never worked for the affected architec= tures. >>> I don't build allmodconfig for all architectures, so other architec= tures >>> may be affected as well. >> >> You need 3.17 kernel headers to have memfd_create, not much the kdbu= s >> test code can do about that. You might want to update the kernel >> headers for these build boxes. > > Or just 'make headers_install' before building the samples should do = it. > Sure, that works so well in a cross build environment. Guenter