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documentation: Emphasize the call_rcu() is illegal from idle
authorPaul E. McKenney <paulmck@linux.vnet.ibm.com>
Thu, 31 Mar 2016 18:00:08 +0000 (11:00 -0700)
committerPaul E. McKenney <paulmck@linux.vnet.ibm.com>
Thu, 31 Mar 2016 20:33:23 +0000 (13:33 -0700)
commit0c7d10e4b998b2f751cebf98435f1ec2dd312c87
tree9b488381e266ee5eac0ddc62fd4b805913c4196ftree | snapshot (tar.gz zip)
parent5413e24c943da33306047fc091fa34fa4f261b3bcommit | diff
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>
Documentation/RCU/Design/Requirements/Requirements.html diff | blob | blame | history