linux-kernel - [PATCH v4 0/1] tcp/dcpp: Un-pin tw

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Message-ID: <20240411120535.2494067-1-vschneid@redhat.com>
Date: Thu, 11 Apr 2024 14:05:34 +0200
From: Valentin Schneider <vschneid@...hat.com>
To: dccp@...r.kernel.org,
	netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-rt-users@...r.kernel.org
Cc: "David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>,
	mleitner@...hat.com,
	David Ahern <dsahern@...nel.org>,
	Juri Lelli <juri.lelli@...hat.com>,
	Tomas Glozar <tglozar@...hat.com>,
	Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
	Thomas Gleixner <tglx@...utronix.de>
Subject: [PATCH v4 0/1] tcp/dcpp: Un-pin tw_timer

Hi,

This is v4 of the series where the tw_timer is un-pinned to get rid of interferences in
isolated CPUs setups.

Eric mentionned rsk_timer needs looking into, but I haven't had the time to do
that. It doesn't show up in our testing, which might be due to its relatively
low timeout (IIUC 3s).

Revisions
=========

v3 -> v2
++++++++

o Rebased against latest Linus' tree
o Added ehash lock usage to serialize scheduling vs descheduling of the tw_timer
  (Paolo)

v2 -> v3
++++++++

o Dropped bh_disable patch
o Rebased against latest Linus' tree

RFCv1 -> v2
++++++++

o Added comment in inet_twsk_deschedule_put() to highlight the race
o Added bh_disable patch

Valentin Schneider (1):
  tcp/dcpp: Un-pin tw_timer

 include/net/inet_timewait_sock.h |  6 ++--
 net/dccp/minisocks.c             |  9 +++--
 net/ipv4/inet_timewait_sock.c    | 59 +++++++++++++++++++++++---------
 net/ipv4/tcp_minisocks.c         |  9 +++--
 4 files changed, 55 insertions(+), 28 deletions(-)

--
2.43.0