rcu: Inline RCU task stall-warning helper functions

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The rcu_print_detail_task_stall(), rcu_print_task_stall_begin(), and
rcu_print_task_stall_end() functions were defined to allow long-gone
Kconfig options to provide an abbreviated RCU CPU stall warning printout.
This commit saves a few lines of code by inlining them into their sole
callers.

While in the area, a useless call of rcu_print_detail_task_stall_rnp()
on the root rcu_node structure was eliminated.  If there is only one
rcu_node structure, its tasks get printed twice, but if there are more,
the root rcu_node structure is guaranteed to have an empty list of blocked
tasks, hence the uselessness.  (Long ago, root rcu_node structures with
non-empty ->blkd_tasks lists could happen, but no longer.)

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

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This commit is contained in:

Paul E. McKenney 2019-01-11 20:36:45 -08:00

parent 32255d51b6

commit 21d0d79ab0

2 changed files with 7 additions and 30 deletions

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1

kernel/rcu/tree.h

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36

kernel/rcu/tree_stall.h

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