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Commit 589a8f59 authored by Paul E. McKenney's avatar Paul E. McKenney
Browse files

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: default avatarPaul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: default avatarJosh Triplett <josh@joshtriplett.org>
parent 14d9d84c

kernel/rcu/rcutorture.c

+5 −3
Original line number Diff line number Diff line
@@ -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");

}