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| author |   David S. Miller <davem@davemloft.net> | 2018-01-11 21:27:54 -0500 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-01-11 22:13:42 -0500 |
| commit | 19d28fbd306e7ae7c1acf05c3e6968b56f0d196b (patch) | |
| tree | 0584a3a4639424733bad7714796f858aa7addee7 /include | |
| parent | Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next (diff) | |
| parent | Merge tag 'ceph-for-4.15-rc8' of git://github.com/ceph/ceph-client (diff) | |
| download | linux-dev-19d28fbd306e7ae7c1acf05c3e6968b56f0d196b.tar.xz linux-dev-19d28fbd306e7ae7c1acf05c3e6968b56f0d196b.zip | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
BPF alignment tests got a conflict because the registers
are output as Rn_w instead of just Rn in net-next, and
in net a fixup for a testcase prohibits logical operations
on pointers before using them.
Also, we should attempt to patch BPF call args if JIT always on is
enabled. Instead, if we fail to JIT the subprogs we should pass
an error back up and fail immediately.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/bpf.h | 26 |
1 files changed, 18 insertions, 8 deletions
diff --git a/include/linux/bpf.h b/include/linux/bpf.h index 6be837c063c3..44f26f6df8fc 100644 --- a/include/linux/bpf.h +++ b/include/linux/bpf.h @@ -44,7 +44,14 @@ struct bpf_map_ops { }; struct bpf_map { - atomic_t refcnt; + /* 1st cacheline with read-mostly members of which some + * are also accessed in fast-path (e.g. ops, max_entries). + */ + const struct bpf_map_ops *ops ____cacheline_aligned; + struct bpf_map *inner_map_meta; +#ifdef CONFIG_SECURITY + void *security; +#endif enum bpf_map_type map_type; u32 key_size; u32 value_size; @@ -53,15 +60,17 @@ struct bpf_map { u32 pages; u32 id; int numa_node; - struct user_struct *user; - const struct bpf_map_ops *ops; - struct work_struct work; + bool unpriv_array; + /* 7 bytes hole */ + + /* 2nd cacheline with misc members to avoid false sharing + * particularly with refcounting. + */ + struct user_struct *user ____cacheline_aligned; + atomic_t refcnt; atomic_t usercnt; - struct bpf_map *inner_map_meta; + struct work_struct work; char name[BPF_OBJ_NAME_LEN]; -#ifdef CONFIG_SECURITY - void *security; -#endif }; /* function argument constraints */ @@ -230,6 +239,7 @@ struct bpf_prog_aux { struct bpf_array { struct bpf_map map; u32 elem_size; + u32 index_mask; /* 'ownership' of prog_array is claimed by the first program that * is going to use this map or by the first program which FD is stored * in the map to make sure that all callers and callees have the same |