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| author | Brendan Jackman <jackmanb@google.com> | 2021-01-14 21:17:46 +0300 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2021-01-15 05:34:29 +0300 |
| commit | 5ca419f2864a2c60940dcf4bbaeb69546200e36f (patch) | |
| tree | edd181e67503cb404dfa55cfaae6d757db3e22b6 /kernel/bpf/stackmap.c | |
| parent | c5bcb5eb4db632280b4123135d583a7bc8caea3e (diff) | |
| download | linux-5ca419f2864a2c60940dcf4bbaeb69546200e36f.tar.xz | |
bpf: Add BPF_FETCH field / create atomic_fetch_add instruction
The BPF_FETCH field can be set in bpf_insn.imm, for BPF_ATOMIC
instructions, in order to have the previous value of the
atomically-modified memory location loaded into the src register
after an atomic op is carried out.
Suggested-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Brendan Jackman <jackmanb@google.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Link: https://lore.kernel.org/bpf/20210114181751.768687-7-jackmanb@google.com
Diffstat (limited to 'kernel/bpf/stackmap.c')
0 files changed, 0 insertions, 0 deletions