kvfree_rcu: Add a bulk-list check when a scheduler is run

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The rcu_scheduler_active flag is set to RCU_SCHEDULER_RUNNING once the
scheduler is up and running.  That signal is used in order to check
and queue a "monitor work" to reclaim freed objects (if there are any)
during early boot.  This flag is used by kvfree_rcu() to determine when
work can safely be queued, at which point memory passed to earlier
invocations of kvfree_rcu() can be processed.

However, only "krcp->head" is checked for objects that need to be
released, and there are now two more, namely, "krcp->bkvhead[0]" and
"krcp->bkvhead[1]".  Therefore, check these two additional channels.

Signed-off-by: Uladzislau Rezki (Sony) <urezki@gmail.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>

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Uladzislau Rezki (Sony) 2021-04-15 19:19:58 +02:00 • committed by Paul E. McKenney

parent ac7625ebd5

commit d434c00fa3

1 changed files with 2 additions and 1 deletions

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kernel/rcu/tree.c

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