From: Aaron Conole <aconole@redhat.com>
To: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: netdev@vger.kernel.org, linux-rt-devel@lists.linux.dev,
dev@openvswitch.org, Ilya Maximets <i.maximets@ovn.org>,
Eric Dumazet <edumazet@google.com>,
Simon Horman <horms@kernel.org>,
Jakub Kicinski <kuba@kernel.org>,
Thomas Gleixner <tglx@linutronix.de>,
Paolo Abeni <pabeni@redhat.com>,
"David S. Miller" <davem@davemloft.net>
Subject: Re: [ovs-dev] [PATCH net-next v4 09/15] openvswitch: Move ovs_frag_data_storage into the struct ovs_pcpu_storage
Date: Wed, 14 May 2025 10:14:24 -0400 [thread overview]
Message-ID: <f7t7c2je0u7.fsf@redhat.com> (raw)
In-Reply-To: <20250512092736.229935-10-bigeasy@linutronix.de> (Sebastian Andrzej Siewior's message of "Mon, 12 May 2025 11:27:30 +0200")
Sebastian Andrzej Siewior <bigeasy@linutronix.de> writes:
> ovs_frag_data_storage is a per-CPU variable and relies on disabled BH for its
> locking. Without per-CPU locking in local_bh_disable() on PREEMPT_RT
> this data structure requires explicit locking.
>
> Move ovs_frag_data_storage into the struct ovs_pcpu_storage which already
> provides locking for the structure.
>
> Cc: Aaron Conole <aconole@redhat.com>
> Cc: Eelco Chaudron <echaudro@redhat.com>
> Cc: Ilya Maximets <i.maximets@ovn.org>
> Cc: dev@openvswitch.org
> Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
> ---
Reviewed-by: Aaron Conole <aconole@redhat.com>
next prev parent reply other threads:[~2025-05-14 14:14 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-05-12 9:27 [PATCH net-next v4 00/15] net: Cover more per-CPU storage with local nested BH locking Sebastian Andrzej Siewior
2025-05-12 9:27 ` [PATCH net-next v4 01/15] net: page_pool: Don't recycle into cache on PREEMPT_RT Sebastian Andrzej Siewior
2025-05-12 9:27 ` [PATCH net-next v4 02/15] net: dst_cache: Use nested-BH locking for dst_cache::cache Sebastian Andrzej Siewior
2025-05-12 9:27 ` [PATCH net-next v4 03/15] ipv4/route: Use this_cpu_inc() for stats on PREEMPT_RT Sebastian Andrzej Siewior
2025-05-12 9:27 ` [PATCH net-next v4 04/15] ipv6: sr: Use nested-BH locking for hmac_storage Sebastian Andrzej Siewior
2025-05-12 9:27 ` [PATCH net-next v4 05/15] xdp: Use nested-BH locking for system_page_pool Sebastian Andrzej Siewior
2025-05-12 9:27 ` [PATCH net-next v4 06/15] xfrm: Use nested-BH locking for nat_keepalive_sk_ipv[46] Sebastian Andrzej Siewior
2025-05-12 9:27 ` [PATCH net-next v4 07/15] openvswitch: Merge three per-CPU structures into one Sebastian Andrzej Siewior
2025-05-14 14:13 ` [ovs-dev] " Aaron Conole
2025-05-12 9:27 ` [PATCH net-next v4 08/15] openvswitch: Use nested-BH locking for ovs_pcpu_storage Sebastian Andrzej Siewior
2025-05-14 14:14 ` [ovs-dev] " Aaron Conole
2025-05-12 9:27 ` [PATCH net-next v4 09/15] openvswitch: Move ovs_frag_data_storage into the struct ovs_pcpu_storage Sebastian Andrzej Siewior
2025-05-14 14:14 ` Aaron Conole [this message]
2025-05-12 9:27 ` [PATCH net-next v4 10/15] net/sched: act_mirred: Move the recursion counter struct netdev_xmit Sebastian Andrzej Siewior
2025-05-15 9:55 ` Paolo Abeni
2025-05-15 12:49 ` Juri Lelli
2025-05-12 9:27 ` [PATCH net-next v4 11/15] net/sched: Use nested-BH locking for sch_frag_data_storage Sebastian Andrzej Siewior
2025-05-12 9:27 ` [PATCH net-next v4 12/15] mptcp: Use nested-BH locking for hmac_storage Sebastian Andrzej Siewior
2025-05-12 9:27 ` [PATCH net-next v4 13/15] rds: Disable only bottom halves in rds_page_remainder_alloc() Sebastian Andrzej Siewior
2025-05-12 9:27 ` [PATCH net-next v4 14/15] rds: Acquire per-CPU pointer within BH disabled section Sebastian Andrzej Siewior
2025-05-12 9:27 ` [PATCH net-next v4 15/15] rds: Use nested-BH locking for rds_page_remainder Sebastian Andrzej Siewior
2025-05-15 13:40 ` [PATCH net-next v4 00/15] net: Cover more per-CPU storage with local nested BH locking patchwork-bot+netdevbpf
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