From: "Björn Töpel" <bjorn@kernel.org>
To: Puranjay Mohan <puranjay12@gmail.com>,
paul.walmsley@sifive.com, palmer@dabbelt.com,
aou@eecs.berkeley.edu, pulehui@huawei.com,
conor.dooley@microchip.com, ast@kernel.org, daniel@iogearbox.net,
andrii@kernel.org, martin.lau@linux.dev, song@kernel.org,
yhs@fb.com, kpsingh@kernel.org, bpf@vger.kernel.org,
linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org
Cc: puranjay12@gmail.com
Subject: Re: [PATCH bpf-next 0/2] bpf, riscv: use BPF prog pack allocator in BPF JIT
Date: Sat, 22 Jul 2023 11:24:10 +0200 [thread overview]
Message-ID: <87fs5gguyt.fsf@all.your.base.are.belong.to.us> (raw)
In-Reply-To: <20230720154941.1504-1-puranjay12@gmail.com>
Puranjay Mohan <puranjay12@gmail.com> writes:
> BPF programs currently consume a page each on RISCV. For systems with many BPF
> programs, this adds significant pressure to instruction TLB. High iTLB pressure
> usually causes slow down for the whole system.
>
> Song Liu introduced the BPF prog pack allocator[1] to mitigate the above issue.
> It packs multiple BPF programs into a single huge page. It is currently only
> enabled for the x86_64 BPF JIT.
>
> I enabled this allocator on the ARM64 BPF JIT[2]. It is being reviewed now.
>
> This patch series enables the BPF prog pack allocator for the RISCV BPF JIT.
> This series needs a patch[3] from the ARM64 series to work.
Just a heads-up; I'm on vacation for 2 more weeks, so expect a somewhat
late review from my side!
Thank you for working on the RISC-V BPF JIT!
Björn
_______________________________________________
linux-riscv mailing list
linux-riscv@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-riscv
next prev parent reply other threads:[~2023-07-22 9:24 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-07-20 15:49 [PATCH bpf-next 0/2] bpf, riscv: use BPF prog pack allocator in BPF JIT Puranjay Mohan
2023-07-20 15:49 ` [PATCH bpf-next 1/2] riscv: Extend patch_text_nosync() for multiple pages Puranjay Mohan
2023-08-13 20:20 ` Björn Töpel
2023-07-20 15:49 ` [PATCH bpf-next 2/2] bpf, riscv: use prog pack allocator in the BPF JIT Puranjay Mohan
2023-07-22 9:24 ` Björn Töpel [this message]
2023-08-13 20:27 ` [PATCH bpf-next 0/2] bpf, riscv: use BPF prog pack allocator in " Björn Töpel
2023-08-14 6:14 ` Björn Töpel
2023-08-14 9:12 ` Björn Töpel
2023-08-14 9:42 ` Puranjay Mohan
2023-08-14 10:06 ` Björn Töpel
2023-08-14 10:40 ` Björn Töpel
2023-08-14 12:05 ` Puranjay Mohan
2023-08-14 14:29 ` Björn Töpel
2023-08-14 15:38 ` Puranjay Mohan
2023-08-14 18:30 ` Björn Töpel
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=87fs5gguyt.fsf@all.your.base.are.belong.to.us \
--to=bjorn@kernel.org \
--cc=andrii@kernel.org \
--cc=aou@eecs.berkeley.edu \
--cc=ast@kernel.org \
--cc=bpf@vger.kernel.org \
--cc=conor.dooley@microchip.com \
--cc=daniel@iogearbox.net \
--cc=kpsingh@kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-riscv@lists.infradead.org \
--cc=martin.lau@linux.dev \
--cc=palmer@dabbelt.com \
--cc=paul.walmsley@sifive.com \
--cc=pulehui@huawei.com \
--cc=puranjay12@gmail.com \
--cc=song@kernel.org \
--cc=yhs@fb.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).