[v4,0/1] tcp/dcpp: Un-pin tw_timer

Message

Valentin Schneider April 11, 2024, 12:05 p.m. UTC

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