sched: replace __QDISC_STATE_RUNNING bit with a spin lock

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So that we can use lockdep on it.
The newly introduced sequence lock has the same scope of busylock,
so it shares the same lockdep annotation, but it's only used for
NOLOCK qdiscs.

With this changeset we acquire such lock in the control path around
flushing operation (qdisc reset), to allow more NOLOCK qdisc perf
improvement in the next patch.

Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Paolo Abeni 2018-05-15 16:24:36 +02:00 • committed by David S. Miller

parent b9f672af14

commit 96009c7d50

2 changed files with 16 additions and 5 deletions

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10

include/net/sch_generic.h

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