From: Michael Ellerman <mpe@ellerman.id.au>
To: linuxppc-dev <linuxppc-dev@lists.ozlabs.org>,
bpf@vger.kernel.org, Hari Bathini <hbathini@linux.ibm.com>
Cc: Song Liu <songliubraving@fb.com>,
Daniel Borkmann <daniel@iogearbox.net>,
Alexei Starovoitov <ast@kernel.org>,
Andrii Nakryiko <andrii@kernel.org>,
"Naveen N. Rao" <naveen.n.rao@linux.ibm.com>
Subject: Re: [PATCH v7 0/5] powerpc/bpf: use BPF prog pack allocator
Date: Fri, 27 Oct 2023 20:59:56 +1100 [thread overview]
Message-ID: <169840079686.2701453.13107509549614413199.b4-ty@ellerman.id.au> (raw)
In-Reply-To: <20231020141358.643575-1-hbathini@linux.ibm.com>
On Fri, 20 Oct 2023 19:43:53 +0530, Hari Bathini wrote:
> Most BPF programs are small, but they consume a page each. For systems
> with busy traffic and many BPF programs, this may also add significant
> pressure on instruction TLB. High iTLB pressure usually slows down the
> whole system causing visible performance degradation for production
> workloads.
>
> bpf_prog_pack, a customized allocator that packs multiple bpf programs
> into preallocated memory chunks, was proposed [1] to address it. This
> series extends this support on powerpc.
>
> [...]
Applied to powerpc/next.
[1/5] powerpc/code-patching: introduce patch_instructions()
https://git.kernel.org/powerpc/c/465cabc97b42405eb89380ea6ba8d8b03e4ae1a2
[2/5] powerpc/bpf: implement bpf_arch_text_copy
https://git.kernel.org/powerpc/c/6efc1675acb88eef45ef0156b93f95d66a8ee759
[3/5] powerpc/bpf: implement bpf_arch_text_invalidate for bpf_prog_pack
https://git.kernel.org/powerpc/c/033ffaf0af1f974ecf401db3f70aae6fe1a90fc5
[4/5] powerpc/bpf: rename powerpc64_jit_data to powerpc_jit_data
https://git.kernel.org/powerpc/c/de04e40600ae15fa5e484be242e74aad6de7418f
[5/5] powerpc/bpf: use bpf_jit_binary_pack_[alloc|finalize|free]
https://git.kernel.org/powerpc/c/90d862f370b6e9de1b5d607843c5a2f9823990f3
cheers
prev parent reply other threads:[~2023-10-27 10:16 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-10-20 14:13 [PATCH v7 0/5] powerpc/bpf: use BPF prog pack allocator Hari Bathini
2023-10-20 14:13 ` [PATCH v7 1/5] powerpc/code-patching: introduce patch_instructions() Hari Bathini
2023-10-30 13:02 ` Aneesh Kumar K.V
2023-10-30 18:56 ` Hari Bathini
2023-10-20 14:13 ` [PATCH v7 2/5] powerpc/bpf: implement bpf_arch_text_copy Hari Bathini
2023-10-20 14:13 ` [PATCH v7 3/5] powerpc/bpf: implement bpf_arch_text_invalidate for bpf_prog_pack Hari Bathini
2023-10-20 14:13 ` [PATCH v7 4/5] powerpc/bpf: rename powerpc64_jit_data to powerpc_jit_data Hari Bathini
2023-10-20 14:13 ` [PATCH v7 5/5] powerpc/bpf: use bpf_jit_binary_pack_[alloc|finalize|free] Hari Bathini
2023-10-27 9:59 ` Michael Ellerman [this message]
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