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srcu: Release early_srcu resources when no longer in use 

Kernels built with the CONFIG_TREE_SRCU Kconfig option set and then
booted with rcupdate.rcu_self_test=1 and srcutree.convert_to_big=1 will
test Tree SRCU during early boot.  The early_srcu structure's srcu_node
array will be allocated when init_srcu_struct_fields() is invoked,
but after the test completes this early_srcu structure will not be used.

This commit therefore invokes cleanup_srcu_struct() to free that srcu_node
structure.

Signed-off-by: Zqiang <qiang1.zhang@intel.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
This commit is contained in:
Zqiang 2022-11-10 15:30:13 +08:00 committed by Paul E. McKenney
parent 1b929c02af
commit 66ea1029f9
1 changed files with 1 additions and 0 deletions
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1
kernel/rcu/update.c
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@ -586,6 +586,7 @@ static int rcu_verify_early_boot_tests(void)
early_boot_test_counter++;
srcu_barrier(&early_srcu);
WARN_ON_ONCE(!poll_state_synchronize_srcu(&early_srcu, early_srcu_cookie));
cleanup_srcu_struct(&early_srcu);
}
if (rcu_self_test_counter != early_boot_test_counter) {
WARN_ON(1);