rcutorture: Add forward-progress tests for RCU grace periods

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This commit adds a kthread that loops going into and out of RCU
read-side critical sections, but also including a cond_resched(),
optionally guarded by a check of need_resched(), in that same loop.
This commit relies solely on rcu_torture_writer() progress to judge
the forward progress of grace periods.

Note that Tasks RCU and SRCU are exempted from forward-progress testing
due their (intentionally) less-robust forward-progress guarantees.

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

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This commit is contained in:

Paul E. McKenney 2018-07-18 14:32:31 -07:00

parent a52d14addf

commit 1b27291b1e

3 changed files with 74 additions and 1 deletions

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1

include/linux/rcutiny.h

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73

kernel/rcu/rcutorture.c

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1

kernel/rcu/update.c

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