Commit-ID: ac3748c60426602c091c8c9281c95fadb781fcc0
Gitweb: http://git.kernel.org/tip/ac3748c60426602c091c8c9281c95fadb781fcc0
Author: Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx>
AuthorDate: Mon, 22 May 2017 13:59:52 -0700
Committer: Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx>
CommitDate: Mon, 24 Jul 2017 16:04:08 -0700
rcutorture: Print SRCU lock/unlock totals
This commit adds printing of SRCU lock/unlock totals, which are just
the sums of the per-CPU counts. Saves a bit of mental arithmetic.
Signed-off-by: Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx>
---
kernel/rcu/srcutree.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/kernel/rcu/srcutree.c b/kernel/rcu/srcutree.c
index 8f6fd11..b4f491b 100644
--- a/kernel/rcu/srcutree.c
+++ b/kernel/rcu/srcutree.c
@@ -1221,6 +1221,7 @@ void srcu_torture_stats_print(struct srcu_struct *sp, char *tt, char *tf)
{
int cpu;
int idx;
+ unsigned long s0 = 0, s1 = 0;
idx = sp->srcu_idx & 0x1;
pr_alert("%s%s Tree SRCU per-CPU(idx=%d):", tt, tf, idx);
@@ -1246,8 +1247,10 @@ void srcu_torture_stats_print(struct srcu_struct *sp, char *tt, char *tf)
c0 = l0 - u0;
c1 = l1 - u1;
pr_cont(" %d(%ld,%ld)", cpu, c0, c1);
+ s0 += c0;
+ s1 += c1;
}
- pr_cont("\n");
+ pr_cont(" T(%ld,%ld)\n", s0, s1);
}
EXPORT_SYMBOL_GPL(srcu_torture_stats_print);
--
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