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bpf: btf: fix the brackets of BTF_INT_OFFSET()

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'VAL' should be protected by the brackets.

v2:
* Squash the fix for Documentation/bpf/btf.rst

Fixes: 69b693f0ae ("bpf: btf: Introduce BPF Type Format (BTF)")
Signed-off-by: Gary Lin <glin@suse.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
This commit is contained in:
Gary Lin 2019-05-13 17:45:48 +08:00 committed by Daniel Borkmann
parent cabede8b4f
commit 948dc8c99a
2 changed files with 2 additions and 2 deletions
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2
Documentation/bpf/btf.rst
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@ -131,7 +131,7 @@ The following sections detail encoding of each kind.
``btf_type`` is followed by a ``u32`` with the following bits arrangement:: ``btf_type`` is followed by a ``u32`` with the following bits arrangement::
#define BTF_INT_ENCODING(VAL) (((VAL) & 0x0f000000) >> 24) #define BTF_INT_ENCODING(VAL) (((VAL) & 0x0f000000) >> 24)
#define BTF_INT_OFFSET(VAL) (((VAL & 0x00ff0000)) >> 16) #define BTF_INT_OFFSET(VAL) (((VAL) & 0x00ff0000) >> 16)
#define BTF_INT_BITS(VAL) ((VAL) & 0x000000ff) #define BTF_INT_BITS(VAL) ((VAL) & 0x000000ff)
The ``BTF_INT_ENCODING`` has the following attributes:: The ``BTF_INT_ENCODING`` has the following attributes::

2
include/uapi/linux/btf.h
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@ -83,7 +83,7 @@ struct btf_type {
* is the 32 bits arrangement: * is the 32 bits arrangement:
*/ */
#define BTF_INT_ENCODING(VAL) (((VAL) & 0x0f000000) >> 24) #define BTF_INT_ENCODING(VAL) (((VAL) & 0x0f000000) >> 24)
#define BTF_INT_OFFSET(VAL) (((VAL & 0x00ff0000)) >> 16) #define BTF_INT_OFFSET(VAL) (((VAL) & 0x00ff0000) >> 16)
#define BTF_INT_BITS(VAL) ((VAL) & 0x000000ff) #define BTF_INT_BITS(VAL) ((VAL) & 0x000000ff)
/* Attributes stored in the BTF_INT_ENCODING */ /* Attributes stored in the BTF_INT_ENCODING */