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rcutorture: Print SRCU lock/unlock totals

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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@linux.vnet.ibm.com>
This commit is contained in:
Paul E. McKenney 2017-05-22 13:59:52 -07:00
parent 115a1a5285
commit ac3748c604
1 changed files with 4 additions and 1 deletions
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5
kernel/rcu/srcutree.c
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@ -1221,6 +1221,7 @@ void srcu_torture_stats_print(struct srcu_struct *sp, char *tt, char *tf)
{ {
int cpu; int cpu;
int idx; int idx;
unsigned long s0 = 0, s1 = 0;
idx = sp->srcu_idx & 0x1; idx = sp->srcu_idx & 0x1;
pr_alert("%s%s Tree SRCU per-CPU(idx=%d):", tt, tf, idx); 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; c0 = l0 - u0;
c1 = l1 - u1; c1 = l1 - u1;
pr_cont(" %d(%ld,%ld)", cpu, c0, c1); 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); EXPORT_SYMBOL_GPL(srcu_torture_stats_print);