rcu: Initialize and destroy rcu_synchronize only when necessary

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The __wait_rcu_gp() function unconditionally initializes and cleans up
each element of rs_array[], whether used or not.  This is slightly
wasteful and rather confusing, so this commit skips both initialization
and cleanup for duplicate callback functions.

Signed-off-by: Wei Yang <richard.weiyang@gmail.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>

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Wei Yang 2020-04-15 22:26:55 +00:00 • committed by Paul E. McKenney

parent 9ebcfadb06

commit 7ee880b7bf

1 changed files with 7 additions and 5 deletions

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kernel/rcu/update.c

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