From: Haiyue Wang <haiyue.wang@intel.com>
To: bpf@vger.kernel.org
Cc: Haiyue Wang <haiyue.wang@intel.com>,
Alexei Starovoitov <ast@kernel.org>,
Daniel Borkmann <daniel@iogearbox.net>,
Andrii Nakryiko <andrii@kernel.org>,
Martin KaFai Lau <martin.lau@linux.dev>,
Eduard Zingerman <eddyz87@gmail.com>, Song Liu <song@kernel.org>,
Yonghong Song <yonghong.song@linux.dev>,
John Fastabend <john.fastabend@gmail.com>,
KP Singh <kpsingh@kernel.org>,
Stanislav Fomichev <sdf@google.com>, Hao Luo <haoluo@google.com>,
Jiri Olsa <jolsa@kernel.org>,
linux-kernel@vger.kernel.org (open list)
Subject: [PATCH v1] bpf,arena: Use helper sizeof_field in struct accessors
Date: Wed, 27 Mar 2024 14:53:29 +0800 [thread overview]
Message-ID: <20240327065334.8140-1-haiyue.wang@intel.com> (raw)
Use the well defined helper sizeof_field() to calculate the size of a
struct member, instead of doing custom calculations.
Signed-off-by: Haiyue Wang <haiyue.wang@intel.com>
---
kernel/bpf/arena.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/kernel/bpf/arena.c b/kernel/bpf/arena.c
index 86571e760dd6..af5cae640669 100644
--- a/kernel/bpf/arena.c
+++ b/kernel/bpf/arena.c
@@ -37,7 +37,7 @@
*/
/* number of bytes addressable by LDX/STX insn with 16-bit 'off' field */
-#define GUARD_SZ (1ull << sizeof(((struct bpf_insn *)0)->off) * 8)
+#define GUARD_SZ (1ull << sizeof_field(struct bpf_insn, off) * 8)
#define KERN_VM_SZ ((1ull << 32) + GUARD_SZ)
struct bpf_arena {
--
2.43.2
next reply other threads:[~2024-03-27 6:50 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-03-27 6:53 Haiyue Wang [this message]
2024-03-27 16:30 ` [PATCH v1] bpf,arena: Use helper sizeof_field in struct accessors patchwork-bot+netdevbpf
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