Re: linux-next: Tree for Sep 19

[Guenter Roeck]

On 09/19/2014 03:21 PM, Randy Dunlap wrote:
> On 09/19/14 14:14, Guenter Roeck wrote:
> > On Fri, Sep 19, 2014 at 04:58:17PM +1000, Stephen Rothwell wrote:
> > > Hi all,
> > >
> > > Changes since 20140917:
> > >
> > > The fsl tree still had its build failure so I used the version from
> > > next-20140917.
> > >
> > > The v4l-dvb tree lost its build failure.
> > >
> > > The security tree gained a conflict against the file-locks tree.
> > >
> > > Non-merge commits (relative to Linus' tree): 6014
> > >   5488 files changed, 217522 insertions(+), 129375 deletions(-)
> > >
> > > ----------------------------------------------------------------------------
> > Guess this is most difficult one.
> >
> > mips:nlm_xlp_defconfig:
> >
> > warning: (SCSI_BNX2X_FCOE && LIBFCOE && TCM_QLA2XXX) selects LIBFC which has
> > unmet direct dependencies (SCSI_LOWLEVEL && SCSI && SCSI_FC_ATTRS)
> > warning: (SCSI_BNX2X_FCOE && LIBFCOE && TCM_QLA2XXX) selects LIBFC which has
> > unmet direct dependencies (SCSI_LOWLEVEL && SCSI && SCSI_FC_ATTRS)
>
> Yes, I have a patch sitting on my hard drive that makes LIBFCOE and TCM_QLA2XXX
> and SCSI_BNX2X_FCOE depend on SCSI_FC_ATTRS, but I'm not entirely happy about
> having to hunt these down (even with the help of kconfig warnings).

One key problem is that nlm_xlp_defconfig does not configure NET anymore.
this is after 'scsi_netlink : Make SCSI_NETLINK dependent on NET instead
of selecting NET' was applied.

In fact, there are many more affected configurations; the change from
"select XXX" to "depends XXX" has far reaching consequences, as many
configurations are no longer valid. For mips alone I find that this commit
changes the following configurations.

e55_defconfig
gpr_defconfig
ip27_defconfig
jazz_defconfig
loongson3_defconfig
malta_defconfig
malta_kvm_defconfig
malta_kvm_guest_defconfig
mtx1_defconfig
nlm_xlp_defconfig
nlm_xlr_defconfig
rm200_defconfig

e55_defconfig is almost the same as before, but only because CONFIG_NET
was not configured for it to start with. For all others, CONFIG_NET is
no longer set. This effectively means that out of 55 mips configurations,
11 or 20% are now bad. This is 3.17-rc5. vs. next-20140919.

Frankly, I don't think this change was really helpful. On the contrary,
we will be in a lot of trouble when this change makes it upstream.
It might be be a good idea to be much more careful when making such
changes. Cleaning up configuration dependencies is a laudable goal,
but when it breaks configurations all over the place it does more damage
than it is worth.

Guenter

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