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rcu: Add up-tree information to dump_blkd_tasks() diagnostics
authorPaul E. McKenney <paulmck@linux.vnet.ibm.com>
Tue, 8 May 2018 19:50:14 +0000 (12:50 -0700)
committerPaul E. McKenney <paulmck@linux.vnet.ibm.com>
Thu, 12 Jul 2018 22:39:08 +0000 (15:39 -0700)
commitff3cee39088b1931a432587059d66cd505f785dc
tree1596e62fe98219c882b61e397669015c92854cbb
parente05121ba5b81e2f85349f038642410578457f6db
rcu: Add up-tree information to dump_blkd_tasks() diagnostics

This commit updates dump_blkd_tasks() to print out quiescent-state
bitmasks for the rcu_node structures further up the tree.  This
information helps debugging of interactions between CPU-hotplug
operations and RCU grace-period initialization.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
kernel/rcu/tree_plugin.h