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    SubjectRe: [PATCH -next 2/4] cgroup: bpf: Add BPF_MAP_TYPE_CGROUP_ARRAY
    Hi,

    [auto build test ERROR on next-20160621]

    url: https://github.com/0day-ci/linux/commits/Martin-KaFai-Lau/cgroup-bpf-cgroup2-membership-test-on-skb/20160622-082800
    config: m68k-sun3_defconfig (attached as .config)
    compiler: m68k-linux-gcc (GCC) 4.9.0
    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
    # save the attached .config to linux build tree
    make.cross ARCH=m68k

    All error/warnings (new ones prefixed by >>):

    kernel/bpf/arraymap.c: In function 'cgroup_fd_array_get_ptr':
    >> kernel/bpf/arraymap.c:547:2: error: implicit declaration of function 'cgroup_get_from_fd' [-Werror=implicit-function-declaration]
    return cgroup_get_from_fd(fd);
    ^
    >> kernel/bpf/arraymap.c:547:2: warning: return makes pointer from integer without a cast
    kernel/bpf/arraymap.c: In function 'cgroup_fd_array_put_ptr':
    >> kernel/bpf/arraymap.c:553:2: error: implicit declaration of function 'cgroup_put' [-Werror=implicit-function-declaration]
    cgroup_put(ptr);
    ^
    cc1: some warnings being treated as errors

    vim +/cgroup_get_from_fd +547 kernel/bpf/arraymap.c

    541 late_initcall(register_perf_event_array_map);
    542
    543 static void *cgroup_fd_array_get_ptr(struct bpf_map *map,
    544 struct file *map_file /* not used */,
    545 int fd)
    546 {
    > 547 return cgroup_get_from_fd(fd);
    548 }
    549
    550 static void cgroup_fd_array_put_ptr(void *ptr)
    551 {
    552 /* cgroup_put free cgrp after a rcu grace period */
    > 553 cgroup_put(ptr);
    554 }
    555
    556 static void cgroup_fd_array_free(struct bpf_map *map)

    ---
    0-DAY kernel test infrastructure Open Source Technology Center
    https://lists.01.org/pipermail/kbuild-all Intel Corporation
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