From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933543AbaD2AbA (ORCPT ); Mon, 28 Apr 2014 20:31:00 -0400 Received: from e38.co.us.ibm.com ([32.97.110.159]:52578 "EHLO e38.co.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933071AbaD2AZu (ORCPT ); Mon, 28 Apr 2014 20:25:50 -0400 From: "Paul E. McKenney" To: linux-kernel@vger.kernel.org Cc: mingo@kernel.org, laijs@cn.fujitsu.com, dipankar@in.ibm.com, akpm@linux-foundation.org, mathieu.desnoyers@efficios.com, josh@joshtriplett.org, niv@us.ibm.com, tglx@linutronix.de, peterz@infradead.org, rostedt@goodmis.org, dhowells@redhat.com, edumazet@google.com, darren@dvhart.com, fweisbec@gmail.com, oleg@redhat.com, sbw@mit.edu, "Paul E. McKenney" Subject: [PATCH tip/core/rcu 19/45] rcutorture: Print negatives for SRCU counter wraparound Date: Mon, 28 Apr 2014 17:25:07 -0700 Message-Id: <1398731133-18925-19-git-send-email-paulmck@linux.vnet.ibm.com> X-Mailer: git-send-email 1.8.1.5 In-Reply-To: <1398731133-18925-1-git-send-email-paulmck@linux.vnet.ibm.com> References: <20140429002455.GA15461@linux.vnet.ibm.com> <1398731133-18925-1-git-send-email-paulmck@linux.vnet.ibm.com> X-TM-AS-MML: disable X-Content-Scanned: Fidelis XPS MAILER x-cbid: 14042900-1344-0000-0000-00000134E8AA Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: "Paul E. McKenney" 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 --- kernel/rcu/rcutorture.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/kernel/rcu/rcutorture.c b/kernel/rcu/rcutorture.c index 3845ea99ccd4..0141fcff6bb9 100644 --- a/kernel/rcu/rcutorture.c +++ b/kernel/rcu/rcutorture.c @@ -486,15 +486,16 @@ static void srcu_torture_barrier(void) static void srcu_torture_stats(char *page) { + long c0, c1; int cpu; int idx = srcu_ctl.completed & 0x1; 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]); + 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"); } -- 1.8.1.5