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-rw-r--r--include/linux/filter.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/filter.h b/include/linux/filter.h
index 392e94b79668..23fca41b8540 100644
--- a/include/linux/filter.h
+++ b/include/linux/filter.h
@@ -264,6 +264,7 @@ static inline bool insn_is_zext(const struct bpf_insn *insn)
* Atomic operations:
*
* BPF_ADD *(uint *) (dst_reg + off16) += src_reg
+ * BPF_ADD | BPF_FETCH src_reg = atomic_fetch_add(dst_reg + off16, src_reg);
*/
#define BPF_ATOMIC_OP(SIZE, OP, DST, SRC, OFF) \