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rcutorture: NULL rcu_torture_current earlier in cleanup code 

Currently, the rcu_torture_current variable remains non-NULL until after
all readers have stopped.  During this time, rcu_torture_stats_print()
will think that the test is still ongoing, which can result in confusing
dmesg output.  This commit therefore NULLs rcu_torture_current immediately
after the rcu_torture_writer() kthread has decided to stop, thus informing
rcu_torture_stats_print() much sooner.

Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
This commit is contained in:
Paul E. McKenney 2020-04-26 19:20:37 -07:00
parent 59359e4f2a
commit cae7cc6ba5
1 changed files with 1 additions and 1 deletions
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2
kernel/rcu/rcutorture.c
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@ -1172,6 +1172,7 @@ rcu_torture_writer(void *arg)
WARN(1, "%s: rtort_pipe_count: %d\n", __func__, rcu_tortures[i].rtort_pipe_count);
}
} while (!torture_must_stop());
rcu_torture_current = NULL; // Let stats task know that we are done.
/* Reset expediting back to unexpedited. */
if (expediting > 0)
expediting = -expediting;
@ -2473,7 +2474,6 @@ rcu_torture_cleanup(void)
reader_tasks[i]);
kfree(reader_tasks);
}
rcu_torture_current = NULL;
if (fakewriter_tasks) {
for (i = 0; i < nfakewriters; i++) {