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/ma... -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.