rcu: Print human-readable message for schedule() in RCU reader

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The WARN_ON_ONCE() invocation within the CONFIG_PREEMPT=y version of
rcu_note_context_switch() triggers when there is a voluntary context
switch in an RCU read-side critical section, but there is quite a gap
between the output of that WARN_ON_ONCE() and this RCU-usage error.
This commit therefore converts the WARN_ON_ONCE() to a WARN_ONCE()
that explicitly describes the problem in its message.

Signed-off-by: Paul E. McKenney <paulmck@kernel.org>

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Paul E. McKenney 2021-07-19 11:52:12 -07:00

parent 508958259b

commit 521c89b3a4

1 changed files with 1 additions and 1 deletions

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kernel/rcu/tree_plugin.h

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