rcu: Create per-cpu rcuc kthreads only when rcutree.use_softirq=0

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The per-CPU "rcuc" kthreads are used only by kernels booted with
rcutree.use_softirq=0, but they are nevertheless unconditionally created
by kernels built with CONFIG_RCU_BOOST=y.  This results in "rcuc"
kthreads being created that are never actually used.  This commit
therefore refrains from creating these kthreads unless the kernel
is actually booted with rcutree.use_softirq=0.

Acked-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Zqiang <qiang1.zhang@intel.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>

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Zqiang 2021-12-29 00:05:10 +08:00 • committed by Paul E. McKenney

parent eae9f147a4

commit 4b4399b245

1 changed files with 1 additions and 1 deletions

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kernel/rcu/tree.c

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