lp:~john-cabaj/ubuntu/+source/linux-gcp/+git/jammy-gcp

Author: Coco Li
Author Date: 2022-01-05 10:48:38 UTC

gro: add ability to control gro max packet size

BugLink: https://bugs.launchpad.net/bugs/2040522

Eric Dumazet suggested to allow users to modify max GRO packet size.

We have seen GRO being disabled by users of appliances (such as
wifi access points) because of claimed bufferbloat issues,
or some work arounds in sch_cake, to split GRO/GSO packets.

Instead of disabling GRO completely, one can chose to limit
the maximum packet size of GRO packets, depending on their
latency constraints.

This patch adds a per device gro_max_size attribute
that can be changed with ip link command.

ip link set dev eth0 gro_max_size 16000

Suggested-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Coco Li <lixiaoyan@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
(backported from commit eac1b93c14d645ef147b049ace0d5230df755548)
[john-cabaj: context changes]
Signed-off-by: John Cabaj <john.cabaj@canonical.com>

Author: Marc Zyngier
Author Date: 2021-10-17 12:42:21 UTC

clocksource/drivers/arch_arm_timer: Move workaround synchronisation around

BugLink: https://bugs.launchpad.net/bugs/2044192

We currently handle synchronisation when workarounds are enabled
by having an ISB in the __arch_counter_get_cnt?ct_stable() helpers.

While this works, this prevents us from relaxing this synchronisation.

Instead, move it closer to the point where the synchronisation is
actually needed. Further patches will subsequently relax this.

Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20211017124225.3018098-14-maz@kernel.org
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
(cherry picked from commit db26f8f2da92471e9f7f71ec78d6fa455cd9c821)
Signed-off-by: John Cabaj <john.cabaj@canonical.com>
Acked-by: Tim Gardner <tim.gardner@canonical.com>
Acked-by: Manuel Diewald <manuel.diewald@canonical.com>
Signed-off-by: John Cabaj <john.cabaj@canonical.com>

Author: John Cabaj
Author Date: 2023-11-21 20:00:51 UTC

UBUNTU: Ubuntu-gcp-6.5-6.5.0-1010.10~22.04.3

Signed-off-by: John Cabaj <john.cabaj@canonical.com>

Author: Thadeu Lima de Souza Cascardo
Author Date: 2023-11-16 15:14:01 UTC

UBUNTU: Ubuntu-gcp-6.2-6.2.0-1019.21~22.04.1

Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@canonical.com>

Author: Thadeu Lima de Souza Cascardo
Author Date: 2023-07-12 19:00:46 UTC

UBUNTU: Ubuntu-gcp-5.19-5.19.0-1030.32~22.04.1

Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@canonical.com>

Author: Thadeu Lima de Souza Cascardo
Author Date: 2022-10-14 15:19:20 UTC

UBUNTU: Ubuntu-gcp-5.15.0-1021.28

Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@canonical.com>