| From: |
| Sebastian Andrzej Siewior <bigeasy-AT-linutronix.de> |
| To: |
| netdev-AT-vger.kernel.org, linux-rt-devel-AT-lists.linux.dev |
| Subject: |
| [PATCH net-next 00/18] net: Cover more per-CPU storage with local nested BH locking. |
| Date: |
| Sun, 09 Mar 2025 15:46:35 +0100 |
| Message-ID: |
| <20250309144653.825351-1-bigeasy@linutronix.de> |
| Cc: |
| "David S. Miller" <davem-AT-davemloft.net>, Eric Dumazet <edumazet-AT-google.com>, Jakub Kicinski <kuba-AT-kernel.org>, Paolo Abeni <pabeni-AT-redhat.com>, Simon Horman <horms-AT-kernel.org>, Thomas Gleixner <tglx-AT-linutronix.de>, Sebastian Andrzej Siewior <bigeasy-AT-linutronix.de> |
| Archive-link: |
| Article |
I was looking at the build-time defined per-CPU variables in net/ and
added the needed local-BH-locks in order to be able to remove the
current per-CPU lock in local_bh_disable() on PREMPT_RT.
The work is not yet complete, I just wanted to post what I have so far
instead of sitting on it.
Sebastian
Sebastian Andrzej Siewior (18):
net: page_pool: Don't recycle into cache on PREEMPT_RT.
net: dst_cache: Use nested-BH locking for dst_cache::cache.
ipv4/route: Use this_cpu_inc() for stats on PREEMPT_RT.
ipv6: sr: Use nested-BH locking for hmac_storage.
xdp: Use nested-BH locking for system_page_pool.
netfilter: nf_dup{4, 6}: Move duplication check to task_struct.
netfilter: nft_inner: Use nested-BH locking for nft_pcpu_tun_ctx.
netfilter: nf_dup_netdev: Move the recursion counter struct
netdev_xmit.
xfrm: Use nested-BH locking for nat_keepalive_sk_ipv[46].
openvswitch: Merge three per-CPU structures into one.
openvswitch: Use nested-BH locking for ovs_actions.
openvswitch: Move ovs_frag_data_storage into the struct ovs_action.
net/sched: act_mirred: Move the recursion counter struct netdev_xmit.
net/sched: Use nested-BH locking for sch_frag_data_storage.
mptcp: Use nested-BH locking for hmac_storage.
rds: Disable only bottom halves in rds_page_remainder_alloc().
rds: Acquire per-CPU pointer within BH disabled section.
rds: Use nested-BH locking for rds_page_remainder.
include/linux/netdevice.h | 7 +++-
include/linux/netdevice_xmit.h | 6 +++
include/linux/netfilter.h | 11 -----
include/linux/sched.h | 1 +
net/core/dev.c | 15 ++++---
net/core/dst_cache.c | 30 ++++++++++++--
net/core/page_pool.c | 4 ++
net/core/xdp.c | 11 ++++-
net/ipv4/netfilter/ip_tables.c | 2 +-
net/ipv4/netfilter/nf_dup_ipv4.c | 6 +--
net/ipv4/route.c | 4 ++
net/ipv6/netfilter/ip6_tables.c | 2 +-
net/ipv6/netfilter/nf_dup_ipv6.c | 6 +--
net/ipv6/seg6_hmac.c | 13 +++++-
net/mptcp/protocol.c | 4 +-
net/mptcp/protocol.h | 9 ++++-
net/netfilter/core.c | 3 --
net/netfilter/nf_dup_netdev.c | 22 ++++++++--
net/netfilter/nft_inner.c | 18 +++++++--
net/openvswitch/actions.c | 69 +++++++++++++++-----------------
net/openvswitch/datapath.c | 9 +----
net/openvswitch/datapath.h | 3 --
net/rds/page.c | 25 +++++++-----
net/sched/act_mirred.c | 28 +++++++++++--
net/sched/sch_frag.c | 10 ++++-
net/xfrm/xfrm_nat_keepalive.c | 30 +++++++++-----
26 files changed, 231 insertions(+), 117 deletions(-)
--
2.47.2
