Messages in this thread Patch in this message | | | From | paulmck@kernel ... | Subject | [PATCH tip/core/rcu 07/23] rcutorture: NULL rcu_torture_current earlier in cleanup code | Date | Mon, 22 Jun 2020 17:37:36 -0700 |
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From: "Paul E. McKenney" <paulmck@kernel.org>
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> --- kernel/rcu/rcutorture.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/kernel/rcu/rcutorture.c b/kernel/rcu/rcutorture.c index 2621a33..5911207 100644 --- a/kernel/rcu/rcutorture.c +++ b/kernel/rcu/rcutorture.c @@ -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++) { -- 2.9.5
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