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authorPaul E. McKenney <paulmck@linux.vnet.ibm.com>2016-03-31 20:00:08 +0200
committerPaul E. McKenney <paulmck@linux.vnet.ibm.com>2016-03-31 22:33:23 +0200
commit0c7d10e4b998b2f751cebf98435f1ec2dd312c87 (patch)
tree9b488381e266ee5eac0ddc62fd4b805913c4196f /usr/Kconfig
parentdocumentation: Sharpen up the no-readers quick quiz (diff)
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documentation: Emphasize the call_rcu() is illegal from idle
Although call_rcu()'s fastpath works just fine on an idle CPU, some branches of the slowpath invoke the scheduler, which uses RCU. Therefore, this commit emphasizes the fact that call_rcu() must not be invoked from an idle CPU. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
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