From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
To: Jesper Dangaard Brouer <hawk@kernel.org>
Cc: "Toke Høiland-Jørgensen" <toke@redhat.com>,
linux-kernel@vger.kernel.org, netdev@vger.kernel.org,
"David S. Miller" <davem@davemloft.net>,
"Boqun Feng" <boqun.feng@gmail.com>,
"Daniel Borkmann" <daniel@iogearbox.net>,
"Eric Dumazet" <edumazet@google.com>,
"Frederic Weisbecker" <frederic@kernel.org>,
"Ingo Molnar" <mingo@redhat.com>,
"Jakub Kicinski" <kuba@kernel.org>,
"Paolo Abeni" <pabeni@redhat.com>,
"Peter Zijlstra" <peterz@infradead.org>,
"Thomas Gleixner" <tglx@linutronix.de>,
"Waiman Long" <longman@redhat.com>,
"Will Deacon" <will@kernel.org>,
"Alexei Starovoitov" <ast@kernel.org>,
"Andrii Nakryiko" <andrii@kernel.org>,
"Eduard Zingerman" <eddyz87@gmail.com>,
"Hao Luo" <haoluo@google.com>, "Jiri Olsa" <jolsa@kernel.org>,
"John Fastabend" <john.fastabend@gmail.com>,
"KP Singh" <kpsingh@kernel.org>,
"Martin KaFai Lau" <martin.lau@linux.dev>,
"Song Liu" <song@kernel.org>,
"Stanislav Fomichev" <sdf@google.com>,
"Yonghong Song" <yonghong.song@linux.dev>,
bpf@vger.kernel.org
Subject: Re: [PATCH v3 net-next 14/15] net: Reference bpf_redirect_info via task_struct on PREEMPT_RT.
Date: Wed, 5 Jun 2024 12:41:28 +0200 [thread overview]
Message-ID: <20240605104128.Nn9Cp0CB@linutronix.de> (raw)
In-Reply-To: <9afab1bb-43d6-4f17-b45d-7f4569d9db70@kernel.org>
On 2024-06-05 12:28:08 [+0200], Jesper Dangaard Brouer wrote:
>
> Hmm, but how will this affect performance?
As I wrote in the changelog for v4, I haven't notice a difference. I
tried to move bpf_net_ctx_set() from cpu_map_bpf_prog_run() to
cpu_map_kthread_run() to have this assignment only once and I didn't see
a difference/ I couldn't tell the two kernels apart.
This is what I have been using for testing
| xdp-bench redirect-cpu --cpu 3 --remote-action drop eth1 -e
in case I was changing the wrong part…
> --Jesper
Sebastian
next prev parent reply other threads:[~2024-06-05 10:41 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20240529162927.403425-1-bigeasy@linutronix.de>
2024-05-29 16:02 ` [PATCH v3 net-next 11/15] lwt: Don't disable migration prio invoking BPF Sebastian Andrzej Siewior
2024-05-29 16:02 ` [PATCH v3 net-next 12/15] seg6: Use nested-BH locking for seg6_bpf_srh_states Sebastian Andrzej Siewior
2024-05-29 16:02 ` [PATCH v3 net-next 13/15] net: Use nested-BH locking for bpf_scratchpad Sebastian Andrzej Siewior
2024-05-29 16:02 ` [PATCH v3 net-next 14/15] net: Reference bpf_redirect_info via task_struct on PREEMPT_RT Sebastian Andrzej Siewior
2024-05-29 21:09 ` Alexei Starovoitov
2024-05-29 22:09 ` Toke Høiland-Jørgensen
2024-05-31 10:38 ` Sebastian Andrzej Siewior
2024-06-05 10:28 ` Jesper Dangaard Brouer
2024-06-05 10:37 ` Toke Høiland-Jørgensen
2024-06-05 10:41 ` Sebastian Andrzej Siewior [this message]
2024-06-05 11:55 ` Jesper Dangaard Brouer
2024-05-29 16:02 ` [PATCH v3 net-next 15/15] net: Move per-CPU flush-lists to bpf_net_context " Sebastian Andrzej Siewior
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