Messages in this thread Patch in this message | | | From | "Paul E. McKenney" <> | Subject | [PATCH tip/core/rcu 5/5] rcu: Make rcutorture emit online failures if verbose | Date | Sat, 17 Aug 2013 19:25:17 -0700 |
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From: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
Although rcutorture counts CPU-hotplug online failures, it does not explicitly record which CPUs were having trouble coming online. This commit therefore emits a console message when online failure occurs.
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> --- kernel/rcutorture.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/kernel/rcutorture.c b/kernel/rcutorture.c index 7d42d13..15bec39 100644 --- a/kernel/rcutorture.c +++ b/kernel/rcutorture.c @@ -1437,7 +1437,13 @@ rcu_torture_onoff(void *arg) torture_type, cpu); starttime = jiffies; n_online_attempts++; - if (cpu_up(cpu) == 0) { + ret = cpu_up(cpu); + if (ret != 0) { + if (verbose) + pr_alert("%s" TORTURE_FLAG + "rcu_torture_onoff task: online %d failed: errno %d\n", + torture_type, cpu, ret); + } else { if (verbose) pr_alert("%s" TORTURE_FLAG "rcu_torture_onoff task: onlined %d\n", -- 1.8.1.5
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