Hi Paolo,

[auto build test ERROR on block/for-next]
[also build test ERROR on v4.11-rc4 next-20170331]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/Paolo-Valente/block-bfq-introduce-the-BFQ-v0-I-O-scheduler-as-an-extra-scheduler/20170402-100622
base:   https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git for-next
config: i386-allmodconfig (attached as .config)
compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901
reproduce:
        # save the attached .config to linux build tree
        make ARCH=i386 

All errors (new ones prefixed by >>):

>> ERROR: "bfq_mark_bfqq_busy" [block/bfq-wf2q.ko] undefined!
>> ERROR: "bfqg_stats_update_dequeue" [block/bfq-wf2q.ko] undefined!
>> ERROR: "bfq_clear_bfqq_busy" [block/bfq-wf2q.ko] undefined!
>> ERROR: "bfq_clear_bfqq_non_blocking_wait_rq" [block/bfq-wf2q.ko] undefined!
>> ERROR: "bfq_bfqq_non_blocking_wait_rq" [block/bfq-wf2q.ko] undefined!
>> ERROR: "bfq_clear_bfqq_wait_request" [block/bfq-wf2q.ko] undefined!
>> ERROR: "bfq_timeout" [block/bfq-wf2q.ko] undefined!
>> ERROR: "bfqg_stats_set_start_empty_time" [block/bfq-wf2q.ko] undefined!
>> ERROR: "bfq_weights_tree_add" [block/bfq-wf2q.ko] undefined!
>> ERROR: "bfq_put_queue" [block/bfq-wf2q.ko] undefined!
>> ERROR: "bfq_bfqq_sync" [block/bfq-wf2q.ko] undefined!
>> ERROR: "bfqg_to_blkg" [block/bfq-wf2q.ko] undefined!
>> ERROR: "bfqq_group" [block/bfq-wf2q.ko] undefined!
>> ERROR: "bfq_weights_tree_remove" [block/bfq-wf2q.ko] undefined!
>> ERROR: "bfq_bic_update_cgroup" [block/bfq-iosched.ko] undefined!
>> ERROR: "bfqg_stats_set_start_idle_time" [block/bfq-iosched.ko] undefined!
>> ERROR: "bfqg_stats_update_completion" [block/bfq-iosched.ko] undefined!
>> ERROR: "bfq_bfqq_move" [block/bfq-iosched.ko] undefined!
>> ERROR: "bfqg_put" [block/bfq-iosched.ko] undefined!
>> ERROR: "next_queue_may_preempt" [block/bfq-iosched.ko] undefined!

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