rcu: Update rcu_preempt_deferred_qs() comments for !PREEMPT kernels

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In non-premptible kernels, tasks never do context switches within
RCU read-side critical sections.  Therefore, in such kernels, each
leaf rcu_node structure's ->blkd_tasks list will always be empty.
The comment on the non-preemptible version of rcu_preempt_deferred_qs()
confuses this point, so this commit therefore fixes it.

Signed-off-by: Zqiang <qiang1.zhang@intel.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>

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Zqiang 2022-06-20 14:42:24 +08:00 • committed by Paul E. McKenney

parent 6d60ea03ac

commit bca4fa8cb0

1 changed files with 7 additions and 4 deletions

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kernel/rcu/tree_plugin.h

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