linux-next: build failure after merge of the bpf-next tree

[Stephen Rothwell]

Hi all,

After merging the bpf-next tree, today's linux-next build (arm
multi_v7_defconfig) failed like this:

kernel/events/core.o: In function `perf_ioctl':
core.c:(.text+0x98c4): undefined reference to `bpf_event_query_prog_array'

Caused by commit

  f371b304f12e ("bpf/tracing: allow user space to query prog array on the same 
tp")

CONFIG_BPF_SYSCALL is not set for this build.

I have used the bpf-next tree from next-20171212 for today.

-- 
Cheers,
Stephen Rothwell