tree f4e0017ef68978b8452a228053b4ad58ca9698ba
parent 72d1ffd276a74c54463b21fcbef2cb5263b617fd
author Zqiang <qiang1.zhang@intel.com> 1655707344 +0800
committer Paul E. McKenney <paulmck@kernel.org> 1656622028 -0700

rcu: Update rcu_preempt_deferred_qs() comments for !PREEMPT kernels

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>