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rcutorture: Make failure indication note reader-batch overflow

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The loop scanning the pipesummary[] array currently skips the last
element, which means that the diagnostics ignore those rarest of
situations, namely where some readers persist across more than ten
grace periods, but all other readers avoid spanning a full grace period.
This commit therefore adjusts the scan to include the last element of
this array.

Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
This commit is contained in:
Paul E. McKenney
2022-05-20 13:18:16 -07:00
parent 5c92d75016
commit 8c0666d320
1 changed files with 1 additions and 1 deletions
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kernel/rcu/rcutorture.c
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@@ -1869,7 +1869,7 @@ rcu_torture_stats_print(void)
batchsummary[i] += READ_ONCE(per_cpu(rcu_torture_batch, cpu)[i]);
}
}
for (i = RCU_TORTURE_PIPE_LEN - 1; i >= 0; i--) {
for (i = RCU_TORTURE_PIPE_LEN; i >= 0; i--) {
if (pipesummary[i] != 0)
break;
}