rcutorture: Suppress debugging grace period delays during flooding

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Tree RCU supports grace-period delays using the rcutree.gp_cleanup_delay,
rcutree.gp_init_delay, and rcutree.gp_preinit_delay kernel boot
parameters.  These delays are strictly for debugging purposes, and have
proven quite effective at exposing bugs involving race with CPU-hotplug
operations.  However, these delays can result in false positives when
used in conjunction with callback flooding, for example, those generated
by the rcutorture.fwd_progress kernel boot parameter.

This commit therefore suppresses grace-period delays while callback
flooding is in progress.

Signed-off-by: Paul E. McKenney <paulmck@kernel.org>

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This commit is contained in:

Paul E. McKenney 2022-02-04 12:45:18 -08:00

parent b6f3c6a2b1

commit 99d6a2acb8

3 changed files with 37 additions and 3 deletions

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4

kernel/rcu/rcu.h

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4

kernel/rcu/rcutorture.c

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32

kernel/rcu/tree.c

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