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| author | Andrii Nakryiko <andriin@fb.com> | 2019-10-15 11:28:47 -0700 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2019-10-15 16:06:05 -0700 |
| commit | 62561eb442bd095f06534ce637b116b278e5e912 (patch) | |
| tree | 02791f42e5e643fafd896b0d1492f581835b28cb /fs | |
| parent | 291ee02b5e407eb1eb99c9eeaa968ef8a0c16949 (diff) | |
libbpf: Add support for field existance CO-RE relocation
Add support for BPF_FRK_EXISTS relocation kind to detect existence of
captured field in a destination BTF, allowing conditional logic to
handle incompatible differences between kernels.
Also introduce opt-in relaxed CO-RE relocation handling option, which
makes libbpf emit warning for failed relocations, but proceed with other
relocations. Instruction, for which relocation failed, is patched with
(u32)-1 value.
Signed-off-by: Andrii Nakryiko <andriin@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20191015182849.3922287-4-andriin@fb.com
Diffstat (limited to 'fs')
0 files changed, 0 insertions, 0 deletions