linux-kernel - Re: linux-next: Tree for Mar 31 (build failures and culprits)

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Date:	Wed, 01 Apr 2015 10:24:41 +1100
From:	Michael Ellerman <mpe@...erman.id.au>
To:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:	Guenter Roeck <linux@...ck-us.net>,
	Stephen Rothwell <sfr@...b.auug.org.au>,
	linux-next@...r.kernel.org, linux-kernel@...r.kernel.org,
	Tony Lindgren <tony@...mide.com>, Felipe Balbi <balbi@...com>,
	Ard Biesheuvel <ard.biesheuvel@...aro.org>,
	Russell King <rmk+kernel@....linux.org.uk>,
	Arnd Bergmann <arnd@...db.de>, Lad@...ck-us.net,
	Prabhakar <prabhakar.csengg@...il.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Daniel Mack <daniel@...que.org>,
	Mikko Perttunen <mperttunen@...dia.com>,
	Thierry Reding <treding@...dia.com>
Subject: Re: linux-next: Tree for Mar 31 (build failures and culprits)

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 ‘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 just 'make headers_install' before building the samples should do it.

cheers


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