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rcu: Test synchronous RCU grace periods at the end of rcu_init()
This commit tests synchronize_rcu() and synchronize_rcu_expedited() at the end of rcu_init(), in addition to the test already at the beginning of that function. These tests are run only in kernels built with CONFIG_PROVE_RCU=y. Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
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@ -4849,6 +4849,8 @@ void __init rcu_init(void)
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// Kick-start any polled grace periods that started early.
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if (!(per_cpu_ptr(&rcu_data, cpu)->mynode->exp_seq_poll_rq & 0x1))
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(void)start_poll_synchronize_rcu_expedited();
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rcu_test_sync_prims();
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}
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#include "tree_stall.h"
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@ -220,6 +220,7 @@ void rcu_test_sync_prims(void)
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{
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if (!IS_ENABLED(CONFIG_PROVE_RCU))
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return;
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pr_info("Running RCU synchronous self tests\n");
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synchronize_rcu();
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synchronize_rcu_expedited();
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}
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