rcu/nocb: Round down for number of no-CBs grace-period kthreads

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Currently, when the square root of the number of CPUs is rounded down
by int_sqrt(), this round-down is applied to the number of callback
kthreads per grace-period kthreads.  This makes almost no difference
for large systems, but results in oddities such as three no-CBs
grace-period kthreads for a five-CPU system, which is a bit excessive.
This commit therefore causes the round-down to apply to the number of
no-CBs grace-period kthreads, so that systems with from four to eight
CPUs have only two no-CBs grace period kthreads.

Signed-off-by: Paul E. McKenney <paulmck@linux.ibm.com>

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Paul E. McKenney 2019-06-01 05:14:47 -07:00

parent 81c0b3d724

commit 9fcb09bddd

1 changed files with 1 additions and 1 deletions

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kernel/rcu/tree_plugin.h

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