net: revert default NAPI poll timeout to 2 jiffies

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For HZ < 1000 timeout 2000us rounds up to 1 jiffy but expires randomly
because next timer interrupt could come shortly after starting softirq.

For commonly used CONFIG_HZ=1000 nothing changes.

Fixes: 7acf8a1e8a ("Replace 2 jiffies with sysctl netdev_budget_usecs to enable softirq tuning")
Reported-by: Dmitry Yakunin <zeil@yandex-team.ru>
Signed-off-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Konstantin Khlebnikov 2020-04-06 14:39:32 +03:00 • committed by David S. Miller

parent a5d7553829

commit a4837980fd

1 changed files with 2 additions and 1 deletions

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net/core/dev.c

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