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author | Daniel Borkmann <daniel@iogearbox.net> | 2019-05-14 01:18:55 +0200 |
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committer | Alexei Starovoitov <ast@kernel.org> | 2019-05-14 19:47:29 +0200 |
commit | c6110222c6f49ea68169f353565eb865488a8619 (patch) | |
tree | 181de3f33b1e298789b1827b0103d6304f532a86 /mm/balloon_compaction.c | |
parent | tools/bpf: Sync kernel btf.h header (diff) | |
download | linux-c6110222c6f49ea68169f353565eb865488a8619.tar.xz linux-c6110222c6f49ea68169f353565eb865488a8619.zip |
bpf: add map_lookup_elem_sys_only for lookups from syscall side
Add a callback map_lookup_elem_sys_only() that map implementations
could use over map_lookup_elem() from system call side in case the
map implementation needs to handle the latter differently than from
the BPF data path. If map_lookup_elem_sys_only() is set, this will
be preferred pick for map lookups out of user space. This hook is
used in a follow-up fix for LRU map, but once development window
opens, we can convert other map types from map_lookup_elem() (here,
the one called upon BPF_MAP_LOOKUP_ELEM cmd is meant) over to use
the callback to simplify and clean up the latter.
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'mm/balloon_compaction.c')
0 files changed, 0 insertions, 0 deletions