diff --git a/Documentation/bpf/btf.rst b/Documentation/bpf/btf.rst index 8820360d00da..4ae022d274ab 100644 --- a/Documentation/bpf/btf.rst +++ b/Documentation/bpf/btf.rst @@ -151,6 +151,7 @@ for the type. The maximum value of ``BTF_INT_BITS()`` is 128. The ``BTF_INT_OFFSET()`` specifies the starting bit offset to calculate values for this int. For example, a bitfield struct member has: + * btf member bit offset 100 from the start of the structure, * btf member pointing to an int type, * the int type has ``BTF_INT_OFFSET() = 2`` and ``BTF_INT_BITS() = 4`` @@ -160,6 +161,7 @@ from bits ``100 + 2 = 102``. Alternatively, the bitfield struct member can be the following to access the same bits as the above: + * btf member bit offset 102, * btf member pointing to an int type, * the int type has ``BTF_INT_OFFSET() = 0`` and ``BTF_INT_BITS() = 4``