| From | Pranith Kumar <> | Subject | [PATCH 15/16] rcu: Check for a nocb cpu before trying to spawn nocb threads | Date | Wed, 23 Jul 2014 01:09:52 -0400 |
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This commit tries to spawn nocb kthreads only when the CPU is marked as a nocb cpu. This is a minor optimization.
Signed-off-by: Pranith Kumar <bobby.prani@gmail.com> --- kernel/rcu/tree_plugin.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/kernel/rcu/tree_plugin.h b/kernel/rcu/tree_plugin.h index 541c776..8abff0a 100644 --- a/kernel/rcu/tree_plugin.h +++ b/kernel/rcu/tree_plugin.h @@ -1490,7 +1490,8 @@ static void rcu_prepare_kthreads(int cpu) return; rcu_spawn_one_boost_kthread(rcu_state_p, rnp); - rcu_spawn_all_nocb_kthreads(cpu); + if (rcu_is_nocb_cpu(cpu)) + rcu_spawn_all_nocb_kthreads(cpu); } #else /* #ifdef CONFIG_RCU_BOOST */ -- 2.0.0.rc2
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