On Sun, Mar 29, 2015 at 05:31:32PM +0530, Viresh Kumar wrote:
> Warning:
>
> config: blackfin-allyesconfig (attached as .config)
> reproduce:
> wget
> https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross
> -O ~/bin/make.cross
> chmod +x ~/bin/make.cross
> git checkout ca713e393c6eceb54e803df204772a3d6e6c7981
> # save the attached .config to linux build tree
> make.cross ARCH=blackfin
>
> All error/warnings:
>
> kernel/time/timer.c: In function 'init_timers':
> >> kernel/time/timer.c:1648:2: error: call to '__compiletime_assert_1648'
> >> declared with attribute error: BUILD_BUG_ON failed: __alignof__(struct
> >> tvec_base) & TIMER_FLAG_MASK
Ha, this is because blackfin is broken.
blackfin doesn't respect ____cacheline_aligned and NOPs it for UP
builds. Why it thinks {__,}__cacheline_aligned semantics should differ
between SMP/UP is a mystery to me, we have the &_in_smp primitives for
that.
So just ignore this, let the blackfin people deal with it.
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