rcu: Distinguish between NOCB and non-NOCB rcu_callback trace events

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One way to distinguish between NOCB and non-NOCB rcu_callback trace
events is that the former always print zero for the lazy and non-lazy
queue lengths.  Unfortunately, this also means that we cannot see the NOCB
queue lengths.  This commit therefore accesses the NOCB queue lengths,
but negates them.  NOCB rcu_callback trace events should therefore have
negative queue lengths.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
[ paulmck: Match operand size per kbuild test robot's advice. ]

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This commit is contained in:

Paul E. McKenney 2013-08-15 10:12:12 -07:00

parent 9261dd0da6

commit 756cbf6bef

1 changed files with 4 additions and 2 deletions

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kernel/rcutree_plugin.h

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