rcutorture: Record grace periods in forward-progress histogram

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This commit records grace periods in rcutorture's n_launders_hist[]
histogram, thus allowing rcu_torture_fwd_cb_hist() to print out the
elapsed number of grace periods between buckets.  This information
helps to determine whether a lack of forward progress is due to stalled
grace periods on the one hand or due to sluggish callback invocation on
the other.

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

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Paul E. McKenney 2019-01-08 13:41:26 -08:00

parent 7a968bb26a

commit cd618d102b

1 changed files with 22 additions and 7 deletions

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kernel/rcu/rcutorture.c

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