rcu: Make rcu_read_unlock_special() propagate ->qsmaskinit bit clearing

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This commit causes rcu_read_unlock_special() to propagate ->qsmaskinit
bit clearing up the rcu_node tree once a given rcu_node structure's
blkd_tasks list becomes empty.  This is the final commit in preparation
for the rework of RCU priority boosting:  It enables preempted tasks to
remain queued on their rcu_node structure even after all of that rcu_node
structure's CPUs have gone offline.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>

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Paul E. McKenney 2014-10-31 12:05:04 -07:00

parent 8af3a5e78c

commit b6a932d1d9

2 changed files with 17 additions and 3 deletions

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4

kernel/rcu/tree.c

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16

kernel/rcu/tree_plugin.h

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