Re: [PATCH v2 net-next] tcp: switch orphan_count to bare per-cpu counters

Hello:

This patch was applied to netdev/net-next.git (master)
by David S. Miller [off-list ref]:

On Thu, 14 Oct 2021 06:41:26 -0700 you wrote:

From: Eric Dumazet <redacted>

Use of percpu_counter structure to track count of orphaned
sockets is causing problems on modern hosts with 256 cpus
or more.

Stefan Bach reported a serious spinlock contention in real workloads,
that I was able to reproduce with a netfilter rule dropping
incoming FIN packets.

[...]

Here is the summary with links:
  - [v2,net-next] tcp: switch orphan_count to bare per-cpu counters
    https://git.kernel.org/netdev/net-next/c/19757cebf0c5

You are awesome, thank you!
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