linux-kernel - Re: linux-next: Tree for Jun 25

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Date:	Tue, 25 Jun 2013 23:03:14 +0200
From:	"Yann E. MORIN" <yann.morin.1998@...e.fr>
To:	Sedat Dilek <sedat.dilek@...il.com>
Cc:	Stephen Rothwell <sfr@...b.auug.org.au>,
	linux-next@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-kbuild@...r.kernel.org, Michal Marek <mmarek@...e.cz>
Subject: Re: linux-next: Tree for Jun 25

Sedat, All,

On 2013-06-25 11:26 +0200, Sedat Dilek spake thusly:
> On Tue, Jun 25, 2013 at 11:21 AM, Yann E. MORIN <yann.morin.1998@...e.fr> wrote:
> > On Tuesday 25 June 2013 10:55:20 Sedat Dilek wrote:
> >> Not sure what's going on, but I get this with today's Linux-Next.
> >> ( Yesterday's next-20130624 was OK. )
> >>
> >> $ LANG=C LC_ALL=C  yes "" | make oldconfig && LANG=C LC_ALL=C make
> >> silentoldconfig </dev/null
> > [--SNIP--]
> >> RapidIO support (RAPIDIO) [Y/n/?] y
> >>   IDT Tsi721 PCI Express SRIO Controller support (RAPIDIO_TSI721) [Y/n/?] y
> >>   Discovery timeout duration (seconds) (RAPIDIO_DISC_TIMEOUT) [30] 30
> >>   Enable RapidIO Input/Output Ports (RAPIDIO_ENABLE_RX_TX_PORTS) [N/y/?] n
> >>   DMA Engine support for RapidIO (RAPIDIO_DMA_ENGINE) [Y/n/?] y
> >>   RapidIO subsystem debug messages (RAPIDIO_DEBUG) [N/y/?] n
> >>   Enumeration method [M/y/?] (NEW) aborted!
> >>
> >> Console input/output is redirected. Run 'make oldconfig' to update
> >> configuration.
[--SNIP--]
> Bad bad bad Yann, didn't Marek told you to test always with...
> 
>     $ yes "" | make oldconfig; make silentoldconfig </dev/null

If you looked at the commit log, you'd see how I tested this:
    touch defconfig
    for(( i=0; i<10000; i++ )); do
        KCONFIG_ALLCONFIG=$(pwd)/defconfig make randconfig >/dev/null 2>&1
        make silentoldconfig </dev/null >/dev/null 2>&1 || break
    done

That is, 10 thousands random configurations, and none did exhibit the
problem. :-(

Which really means we need a comprehensive test-suite to kconfig.

> Anyway, have fun.

I would not call delving into the kconfig code 'fun'. ;-)

Regards,
Yann E. MORIN.

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