tcp: tsq: avoid one atomic in tcp_wfree()

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Under high load, tcp_wfree() has an atomic operation trying
to schedule a tasklet over and over.

We can schedule it only if our per cpu list was empty.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Eric Dumazet 2016-12-03 11:14:53 -08:00 • committed by David S. Miller

parent b223feb9de

commit a9b204d156

1 changed files with 4 additions and 1 deletions

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net/ipv4/tcp_output.c

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