[PATCH 0/2] Upper bound mode for kernel timers

Artem Savkov
2022-03-23T11:16:52Z

As previously discussed [1] we had a report of a regression in TCP keepalive
timer where timers were up to 4 minutes late resulting in disconnects.

This patchset tries to fix the problem by introducing upper bound kernel timers
and making tcp keepalive timer use those.

[1] https://lore.kernel.org/all/20210302001054.4qgrvnkltvkgikzr@treble/T/#u

Artem Savkov (2):
timer: introduce upper bound timers
net: make tcp keepalive timer upper bound

include/linux/timer.h | 3 ++-
kernel/time/timer.c | 36 ++++++++++++++++++++-------------
net/ipv4/inet_connection_sock.c | 2 +-
3 files changed, 25 insertions(+), 16 deletions(-)

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2.34.1