Re: net_device->queue_lock contention on 32-way box

[David S. Miller]

On Wed, 26 May 2004 14:47:15 -0700
"Chen, Kenneth W" <kenneth.w.chen@xxxxxxxxx> wrote:

> Could netif_schedule() take long time to run?

No, it's a series of a few atomic operations.

1) test_and_set_bit()
2) disable cpu interrupts
3) Link list insertion
4) Set a local-cpu flag
5) re-enable cpu interrupts
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