rcutorture: Print negatives for SRCU counter wraparound (589a8f59) · Commits · 戴 / test

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>

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");
		}

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