From: Jesper Dangaard Brouer <hawk@kernel.org>
To: Sebastian Andrzej Siewior <bigeasy@linutronix.de>,
linux-kernel@vger.kernel.org, netdev@vger.kernel.org
Cc: "David S. Miller" <davem@davemloft.net>,
"Daniel Bristot de Oliveira" <bristot@kernel.org>,
"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>, "Björn Töpel" <bjorn@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>,
"Jonathan Lemon" <jonathan.lemon@gmail.com>,
"KP Singh" <kpsingh@kernel.org>,
"Maciej Fijalkowski" <maciej.fijalkowski@intel.com>,
"Magnus Karlsson" <magnus.karlsson@intel.com>,
"Martin KaFai Lau" <martin.lau@linux.dev>,
"Song Liu" <song@kernel.org>,
"Stanislav Fomichev" <sdf@google.com>,
"Toke Høiland-Jørgensen" <toke@redhat.com>,
"Yonghong Song" <yonghong.song@linux.dev>,
bpf@vger.kernel.org
Subject: Re: [PATCH v6 net-next 15/15] net: Move per-CPU flush-lists to bpf_net_context on PREEMPT_RT.
Date: Thu, 13 Jun 2024 11:33:13 +0200 [thread overview]
Message-ID: <4d79cd91-50dc-402e-a4f5-785093341efc@kernel.org> (raw)
In-Reply-To: <20240612170303.3896084-16-bigeasy@linutronix.de>
On 12/06/2024 18.44, Sebastian Andrzej Siewior wrote:
> The per-CPU flush lists, which are accessed from within the NAPI callback
> (xdp_do_flush() for instance), are per-CPU. There are subject to the
> same problem as struct bpf_redirect_info.
>
> Add the per-CPU lists cpu_map_flush_list, dev_map_flush_list and
> xskmap_map_flush_list to struct bpf_net_context. Add wrappers for the
> access. The lists initialized on first usage (similar to
> bpf_net_ctx_get_ri()).
>
[...]
> Reviewed-by: Toke Høiland-Jørgensen<toke@redhat.com>
> Signed-off-by: Sebastian Andrzej Siewior<bigeasy@linutronix.de>
> ---
> include/linux/filter.h | 42 ++++++++++++++++++++++++++++++++++++++++++
> kernel/bpf/cpumap.c | 19 +++----------------
> kernel/bpf/devmap.c | 11 +++--------
> net/xdp/xsk.c | 12 ++++--------
> 4 files changed, 52 insertions(+), 32 deletions(-)
Acked-by: Jesper Dangaard Brouer <hawk@kernel.org>
prev parent reply other threads:[~2024-06-13 9:33 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-06-12 16:44 [PATCH v6 net-next 00/15] locking: Introduce nested-BH locking Sebastian Andrzej Siewior
2024-06-12 16:44 ` [PATCH v6 net-next 01/15] locking/local_lock: Introduce guard definition for local_lock Sebastian Andrzej Siewior
2024-06-12 16:44 ` [PATCH v6 net-next 02/15] locking/local_lock: Add local nested BH locking infrastructure Sebastian Andrzej Siewior
2024-06-12 16:44 ` [PATCH v6 net-next 03/15] net: Use __napi_alloc_frag_align() instead of open coding it Sebastian Andrzej Siewior
2024-06-12 16:44 ` [PATCH v6 net-next 04/15] net: Use nested-BH locking for napi_alloc_cache Sebastian Andrzej Siewior
2024-06-12 16:44 ` [PATCH v6 net-next 05/15] net/tcp_sigpool: Use nested-BH locking for sigpool_scratch Sebastian Andrzej Siewior
2024-06-12 16:44 ` [PATCH v6 net-next 06/15] net/ipv4: Use nested-BH locking for ipv4_tcp_sk Sebastian Andrzej Siewior
2024-06-12 16:44 ` [PATCH v6 net-next 07/15] netfilter: br_netfilter: Use nested-BH locking for brnf_frag_data_storage Sebastian Andrzej Siewior
2024-06-12 16:44 ` [PATCH v6 net-next 08/15] net: softnet_data: Make xmit.recursion per task Sebastian Andrzej Siewior
2024-06-12 17:18 ` Steven Rostedt
2024-06-14 8:27 ` Sebastian Andrzej Siewior
2024-06-14 8:38 ` Eric Dumazet
2024-06-14 9:48 ` Sebastian Andrzej Siewior
2024-06-14 14:08 ` Paolo Abeni
2024-06-14 16:04 ` Steven Rostedt
2024-06-14 16:04 ` Sebastian Andrzej Siewior
2024-06-14 16:01 ` [PATCH v6.5 08/15] net: softnet_data: Make xmit " Sebastian Andrzej Siewior
2024-06-12 16:44 ` [PATCH v6 net-next 09/15] dev: Remove PREEMPT_RT ifdefs from backlog_lock.*() Sebastian Andrzej Siewior
2024-06-12 16:44 ` [PATCH v6 net-next 10/15] dev: Use nested-BH locking for softnet_data.process_queue Sebastian Andrzej Siewior
2024-06-12 16:44 ` [PATCH v6 net-next 11/15] lwt: Don't disable migration prio invoking BPF Sebastian Andrzej Siewior
2024-06-12 16:44 ` [PATCH v6 net-next 12/15] seg6: Use nested-BH locking for seg6_bpf_srh_states Sebastian Andrzej Siewior
2024-06-12 16:44 ` [PATCH v6 net-next 13/15] net: Use nested-BH locking for bpf_scratchpad Sebastian Andrzej Siewior
2024-06-12 16:44 ` [PATCH v6 net-next 14/15] net: Reference bpf_redirect_info via task_struct on PREEMPT_RT Sebastian Andrzej Siewior
2024-06-13 9:32 ` Jesper Dangaard Brouer
2024-06-12 16:44 ` [PATCH v6 net-next 15/15] net: Move per-CPU flush-lists to bpf_net_context " Sebastian Andrzej Siewior
2024-06-13 9:33 ` Jesper Dangaard Brouer [this message]
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