srcu: Add boot-time control over srcu_node array allocation

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This commit adds an srcu_tree.convert_to_big kernel parameter that either
refuses to convert at all (0), converts immediately at init_srcu_struct()
time (1), or lets rcutorture convert it (2).  An addition contention-based
dynamic conversion choice will be added, along with documentation.

[ paulmck: Apply callback-scanning feedback from Neeraj Upadhyay. ]

Co-developed-by: Neeraj Upadhyay <quic_neeraju@quicinc.com>
Signed-off-by: Neeraj Upadhyay <quic_neeraju@quicinc.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>

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This commit is contained in:

Paul E. McKenney 2022-01-25 15:41:10 -08:00

parent 0b56f95390

commit c69a00a12e

2 changed files with 45 additions and 16 deletions

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13

Documentation/admin-guide/kernel-parameters.txt

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48

kernel/rcu/srcutree.c

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