rcuscale: Use special allocator for rcu_scale_writer()

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The rcu_scale_writer() function needs only a fixed number of rcu_head
structures per kthread, which means that a trivial allocator suffices.
This commit therefore uses an llist-based allocator using a fixed array of
structures per kthread.  This allows aggressive testing of RCU performance
without stressing the slab allocators.

Signed-off-by: "Paul E. McKenney" <paulmck@kernel.org>
Signed-off-by: Neeraj Upadhyay <neeraj.upadhyay@kernel.org>

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Paul E. McKenney 2024-08-01 17:43:06 -07:00 • committed by Neeraj Upadhyay

parent 3e3c4f0e27

commit 1c3e6e7903

1 changed files with 113 additions and 10 deletions

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kernel/rcu/rcuscale.c

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