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authorPaul E. McKenney <paulmck@linux.vnet.ibm.com>2013-06-21 06:24:56 -0700
committerPaul E. McKenney <paulmck@linux.vnet.ibm.com>2013-08-20 11:38:45 -0700
commit7a6a41073c345ff5ef5e81317211481c0da3f7f3 (patch)
tree259691e1f4bd116d57bca9b8919a78822f32cb1a /kernel/rcutorture.c
parentef47db8e99d53f0da5270accd2ee71bcf9e25f11 (diff)
downloadlinux-7a6a41073c345ff5ef5e81317211481c0da3f7f3.tar.bz2
rcu: Make rcutorture emit online failures if verbose
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> Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Diffstat (limited to 'kernel/rcutorture.c')
-rw-r--r--kernel/rcutorture.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/kernel/rcutorture.c b/kernel/rcutorture.c
index 20ce3b6f9aa6..be63101c6175 100644
--- a/kernel/rcutorture.c
+++ b/kernel/rcutorture.c
@@ -1434,7 +1434,13 @@ rcu_torture_onoff(void *arg)
torture_type, cpu);
starttime = jiffies;
n_online_attempts++;
- if (cpu_up(cpu) == 0) {
+ ret = cpu_up(cpu);
+ if (ret) {
+ 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",