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| author |   Stanislav Fomichev <sdf@google.com> | 2020-04-24 16:59:41 -0700 |
|---|---|---|
| committer |   Alexei Starovoitov <ast@kernel.org> | 2020-04-26 08:53:13 -0700 |
| commit | 6890896bd765b0504761c61901c9804fca23bfb2 (patch) | |
| tree | dbeb4bd9847589b3f84f7c195158f2cded961204 /kernel/bpf/core.c | |
| parent | bpf, riscv: Fix tail call count off by one in RV32 BPF JIT (diff) | |
| download | linux-dev-6890896bd765b0504761c61901c9804fca23bfb2.tar.xz linux-dev-6890896bd765b0504761c61901c9804fca23bfb2.zip | |
bpf: Fix missing bpf_base_func_proto in cgroup_base_func_proto for CGROUP_NET=n
linux-next build bot reported compile issue [1] with one of its
configs. It looks like when we have CONFIG_NET=n and
CONFIG_BPF{,_SYSCALL}=y, we are missing the bpf_base_func_proto
definition (from net/core/filter.c) in cgroup_base_func_proto.
I'm reshuffling the code a bit to make it work. The common helpers
are moved into kernel/bpf/helpers.c and the bpf_base_func_proto is
exported from there.
Also, bpf_get_raw_cpu_id goes into kernel/bpf/core.c akin to existing
bpf_user_rnd_u32.
[1] https://lore.kernel.org/linux-next/CAKH8qBsBvKHswiX1nx40LgO+BGeTmb1NX8tiTttt_0uu6T3dCA@mail.gmail.com/T/#mff8b0c083314c68c2e2ef0211cb11bc20dc13c72
Fixes: 0456ea170cd6 ("bpf: Enable more helpers for BPF_PROG_TYPE_CGROUP_{DEVICE,SYSCTL,SOCKOPT}")
Signed-off-by: Stanislav Fomichev <sdf@google.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Cc: Andrii Nakryiko <andriin@fb.com>
Link: https://lore.kernel.org/bpf/20200424235941.58382-1-sdf@google.com
Diffstat (limited to 'kernel/bpf/core.c')
| -rw-r--r-- | kernel/bpf/core.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/kernel/bpf/core.c b/kernel/bpf/core.c index 916f5132a984..0cc91805069a 100644 --- a/kernel/bpf/core.c +++ b/kernel/bpf/core.c @@ -2136,6 +2136,11 @@ BPF_CALL_0(bpf_user_rnd_u32) return res; } +BPF_CALL_0(bpf_get_raw_cpu_id) +{ + return raw_smp_processor_id(); +} + /* Weak definitions of helper functions in case we don't have bpf syscall. */ const struct bpf_func_proto bpf_map_lookup_elem_proto __weak; const struct bpf_func_proto bpf_map_update_elem_proto __weak; |