From: "Toke Høiland-Jørgensen" <toke@redhat.com>
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>,
"Sebastian Andrzej Siewior" <bigeasy@linutronix.de>,
"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>,
"Jesper Dangaard Brouer" <hawk@kernel.org>,
"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>,
"Yonghong Song" <yonghong.song@linux.dev>,
bpf@vger.kernel.org
Subject: Re: [PATCH v4 net-next 14/14] net: Move per-CPU flush-lists to bpf_net_context on PREEMPT_RT.
Date: Wed, 05 Jun 2024 12:20:41 +0200 [thread overview]
Message-ID: <87cyovadxi.fsf@toke.dk> (raw)
In-Reply-To: <20240604154425.878636-15-bigeasy@linutronix.de>
Sebastian Andrzej Siewior <bigeasy@linutronix.de> writes:
> 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.
>
> Cc: "Björn Töpel" <bjorn@kernel.org>
> Cc: Alexei Starovoitov <ast@kernel.org>
> Cc: Andrii Nakryiko <andrii@kernel.org>
> Cc: Eduard Zingerman <eddyz87@gmail.com>
> Cc: Hao Luo <haoluo@google.com>
> Cc: Jesper Dangaard Brouer <hawk@kernel.org>
> Cc: Jiri Olsa <jolsa@kernel.org>
> Cc: John Fastabend <john.fastabend@gmail.com>
> Cc: Jonathan Lemon <jonathan.lemon@gmail.com>
> Cc: KP Singh <kpsingh@kernel.org>
> Cc: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
> Cc: Magnus Karlsson <magnus.karlsson@intel.com>
> Cc: Martin KaFai Lau <martin.lau@linux.dev>
> Cc: Song Liu <song@kernel.org>
> Cc: Stanislav Fomichev <sdf@google.com>
> Cc: Toke Høiland-Jørgensen <toke@redhat.com>
> Cc: Yonghong Song <yonghong.song@linux.dev>
> Cc: bpf@vger.kernel.org
> Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Reviewed-by: Toke Høiland-Jørgensen <toke@redhat.com>
next prev parent reply other threads:[~2024-06-05 10:20 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-06-04 15:24 [PATCH v4 net-next 00/15] locking: Introduce nested-BH locking Sebastian Andrzej Siewior
2024-06-04 15:24 ` [PATCH v4 net-next 01/14] locking/local_lock: Add local nested BH locking infrastructure Sebastian Andrzej Siewior
2024-06-06 7:52 ` Peter Zijlstra
2024-06-06 7:59 ` Sebastian Andrzej Siewior
2024-06-04 15:24 ` [PATCH v4 net-next 02/14] net: Use __napi_alloc_frag_align() instead of open coding it Sebastian Andrzej Siewior
2024-06-04 15:24 ` [PATCH v4 net-next 03/14] net: Use nested-BH locking for napi_alloc_cache Sebastian Andrzej Siewior
2024-06-06 2:54 ` Jakub Kicinski
2024-06-06 6:22 ` Sebastian Andrzej Siewior
2024-06-04 15:24 ` [PATCH v4 net-next 04/14] net/tcp_sigpool: Use nested-BH locking for sigpool_scratch Sebastian Andrzej Siewior
2024-06-04 15:24 ` [PATCH v4 net-next 05/14] net/ipv4: Use nested-BH locking for ipv4_tcp_sk Sebastian Andrzej Siewior
2024-06-04 15:24 ` [PATCH v4 net-next 06/14] netfilter: br_netfilter: Use nested-BH locking for brnf_frag_data_storage Sebastian Andrzej Siewior
2024-06-04 15:24 ` [PATCH v4 net-next 07/14] net: softnet_data: Make xmit.recursion per task Sebastian Andrzej Siewior
2024-06-04 15:24 ` [PATCH v4 net-next 08/14] dev: Remove PREEMPT_RT ifdefs from backlog_lock.*() Sebastian Andrzej Siewior
2024-06-04 15:24 ` [PATCH v4 net-next 09/14] dev: Use nested-BH locking for softnet_data.process_queue Sebastian Andrzej Siewior
2024-06-04 15:24 ` [PATCH v4 net-next 10/14] lwt: Don't disable migration prio invoking BPF Sebastian Andrzej Siewior
2024-06-04 15:24 ` [PATCH v4 net-next 11/14] seg6: Use nested-BH locking for seg6_bpf_srh_states Sebastian Andrzej Siewior
2024-06-04 15:24 ` [PATCH v4 net-next 12/14] net: Use nested-BH locking for bpf_scratchpad Sebastian Andrzej Siewior
2024-06-04 15:24 ` [PATCH v4 net-next 13/14] net: Reference bpf_redirect_info via task_struct on PREEMPT_RT Sebastian Andrzej Siewior
2024-06-05 10:20 ` Toke Høiland-Jørgensen
2024-06-04 15:24 ` [PATCH v4 net-next 14/14] net: Move per-CPU flush-lists to bpf_net_context " Sebastian Andrzej Siewior
2024-06-05 10:20 ` Toke Høiland-Jørgensen [this message]
2024-06-06 2:52 ` [PATCH v4 net-next 00/15] locking: Introduce nested-BH locking Jakub Kicinski
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