netdev - [PATCH bpf-next 0/2] Enable inline bpf_kptr

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Message-Id: <20240130124659.670321-1-pulehui@huaweicloud.com>
Date: Tue, 30 Jan 2024 12:46:57 +0000
From: Pu Lehui <pulehui@...weicloud.com>
To: bpf@...r.kernel.org,
	linux-riscv@...ts.infradead.org,
	netdev@...r.kernel.org
Cc: Björn Töpel <bjorn@...nel.org>,
	Hou Tao <houtao1@...wei.com>,
	Alexei Starovoitov <ast@...nel.org>,
	Daniel Borkmann <daniel@...earbox.net>,
	Andrii Nakryiko <andrii@...nel.org>,
	Martin KaFai Lau <martin.lau@...ux.dev>,
	Eduard Zingerman <eddyz87@...il.com>,
	Song Liu <song@...nel.org>,
	Yonghong Song <yhs@...com>,
	John Fastabend <john.fastabend@...il.com>,
	KP Singh <kpsingh@...nel.org>,
	Stanislav Fomichev <sdf@...gle.com>,
	Hao Luo <haoluo@...gle.com>,
	Jiri Olsa <jolsa@...nel.org>,
	Palmer Dabbelt <palmer@...belt.com>,
	Luke Nelson <luke.r.nels@...il.com>,
	Pu Lehui <pulehui@...wei.com>,
	Pu Lehui <pulehui@...weicloud.com>
Subject: [PATCH bpf-next 0/2] Enable inline bpf_kptr_xchg() for RV64

This patch is the RV64 implementation of inline bpf_kptr_xchg()[0]. RV64
JIT supports 64-bit BPF_XCHG atomic instructions. At the same time, the
underlying implementation of xchg() and atomic64_xchg() in RV64 both are
raw_xchg() that supported 64-bit. Therefore inline bpf_kptr_xchg() will
have equivalent semantics. Let's inline it for better performance.

link: https://lore.kernel.org/bpf/20240105104819.3916743-1-houtao@huaweicloud.com [0]

Pu Lehui (2):
  riscv, bpf: Enable inline bpf_kptr_xchg() for RV64
  selftests/bpf: Enable inline bpf_kptr_xchg() test for RV64

 arch/riscv/net/bpf_jit_comp64.c                           | 5 +++++
 tools/testing/selftests/bpf/prog_tests/kptr_xchg_inline.c | 3 ++-
 2 files changed, 7 insertions(+), 1 deletion(-)

-- 
2.34.1