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authorPaul E. McKenney <paulmck@linux.ibm.com>2019-04-15 23:50:05 +0200
committerPaul E. McKenney <paulmck@linux.ibm.com>2019-05-28 18:06:09 +0200
commit3432d765c59ba026de49bd4f1f0c2adeff0e7a16 (patch)
tree2c68bf2e04c85af0d6dfd43d0b7390b8c070ab42 /kernel/rcu/rcu.h
parentrcutorture: Give the scheduler a chance on PREEMPT && NO_HZ_FULL kernels (diff)
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rcutorture: Halt forward-progress checks at end of run
Once removed, an rcu_torture element can be deferred-freed by a chain of call_rcu() invocations, with each callback invoking another round of call_rcu() until either a fixed number of call_rcu() invocations have been chained or until the test ends. This means that if the test ends, some of the rcu_torture elements will be "stranded" partway through the deferred-free process, which results in false-positive warnings from rcu_torture_writer() due to lack of forward progress should the test end just at the end of a stutter interval. This commit therefore suppresses rcu_torture_writer()'s forward-progress checks when the test ends in order to avoid these false-positive reports.. Reported-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Paul E. McKenney <paulmck@linux.ibm.com>
Diffstat (limited to 'kernel/rcu/rcu.h')
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