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authorPaul E. McKenney <paulmck@linux.vnet.ibm.com>2014-03-03 16:51:08 -0800
committerPaul E. McKenney <paulmck@linux.vnet.ibm.com>2014-05-14 09:45:58 -0700
commit589a8f59509dc4c68f9c1e2522c5b0b556009221 (patch)
treebfd54dddc6ffaf7500b73c7f46a192d0e87634bf /kernel/rcu/rcutorture.c
parent14d9d84c9e9b54e02ea69ab5cb6e2114f3639160 (diff)
downloadlinux-589a8f59509dc4c68f9c1e2522c5b0b556009221.tar.bz2
rcutorture: Print negatives for SRCU counter wraparound
The srcu_torture_stats() function prints SRCU's per-CPU c[] array with an unsigned format, which means that the number one less than zero is a very large number. This commit therefore prints this array with a signed format in order to improve readability of the rcutorture output. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Diffstat (limited to 'kernel/rcu/rcutorture.c')
-rw-r--r--kernel/rcu/rcutorture.c8
1 files changed, 5 insertions, 3 deletions
diff --git a/kernel/rcu/rcutorture.c b/kernel/rcu/rcutorture.c
index 0bc5f0a4c1ab..80d2d2440210 100644
--- a/kernel/rcu/rcutorture.c
+++ b/kernel/rcu/rcutorture.c
@@ -492,9 +492,11 @@ static void srcu_torture_stats(char *page)
page += sprintf(page, "%s%s per-CPU(idx=%d):",
torture_type, TORTURE_FLAG, idx);
for_each_possible_cpu(cpu) {
- page += sprintf(page, " %d(%lu,%lu)", cpu,
- per_cpu_ptr(srcu_ctl.per_cpu_ref, cpu)->c[!idx],
- per_cpu_ptr(srcu_ctl.per_cpu_ref, cpu)->c[idx]);
+ long c0, c1;
+
+ c0 = (long)per_cpu_ptr(srcu_ctl.per_cpu_ref, cpu)->c[!idx];
+ c1 = (long)per_cpu_ptr(srcu_ctl.per_cpu_ref, cpu)->c[idx];
+ page += sprintf(page, " %d(%ld,%ld)", cpu, c0, c1);
}
sprintf(page, "\n");
}