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| author | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2014-03-03 16:51:08 -0800 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2014-05-14 09:45:58 -0700 |
| commit | 589a8f59509dc4c68f9c1e2522c5b0b556009221 (patch) | |
| tree | bfd54dddc6ffaf7500b73c7f46a192d0e87634bf /kernel/rcu | |
| parent | 14d9d84c9e9b54e02ea69ab5cb6e2114f3639160 (diff) | |
| download | linux-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')
| -rw-r--r-- | kernel/rcu/rcutorture.c | 8 |
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"); } |