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由 David S. Miller 提交于
Based upon a bug report by Andrew Gallatin on netdev with subject "CPU utilization increased in 2.6.27rc" In commit 37437bb2 ("pkt_sched: Schedule qdiscs instead of netdev_queue.") the test of the queue being stopped was erroneously removed from qdisc_run(). When the TX queue of the device fills up, this omission causes lots of extraneous useless work to be queued up to softirq context, where we'll just return immediately because the device is still stuffed up. Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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