tcp/dccp: bypass empty buckets in inet_twsk_purge()

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[ Upstream commit 50e2907ef8 ]

TCP ehash table is often sparsely populated.

inet_twsk_purge() spends too much time calling cond_resched().

This patch can reduce time spent in inet_twsk_purge() by 20x.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Link: https://lore.kernel.org/r/20240327191206.508114-1-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Stable-dep-of: 565d121b69 ("tcp: prevent concurrent execution of tcp_sk_exit_batch")
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Eric Dumazet 2024-03-27 19:12:06 +00:00 • committed by Greg Kroah-Hartman

parent 4df0fb0391

commit e33e75fe52

1 changed files with 7 additions and 2 deletions

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net/ipv4/inet_timewait_sock.c

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