From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756538AbbAXOIp (ORCPT ); Sat, 24 Jan 2015 09:08:45 -0500 Received: from mail-qa0-f44.google.com ([209.85.216.44]:59622 "EHLO mail-qa0-f44.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753777AbbAXOEN (ORCPT ); Sat, 24 Jan 2015 09:04:13 -0500 From: Tejun Heo To: akpm@linux-foundation.org Cc: linux-kernel@vger.kernel.org, Tejun Heo , Thomas Gleixner Subject: [PATCH 16/32] time: use %*pb[l] to print bitmaps including cpumasks and nodemasks Date: Sat, 24 Jan 2015 09:03:22 -0500 Message-Id: <1422108218-25398-17-git-send-email-tj@kernel.org> X-Mailer: git-send-email 2.1.0 In-Reply-To: <1422108218-25398-1-git-send-email-tj@kernel.org> References: <1422108218-25398-1-git-send-email-tj@kernel.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org printk and friends can now formap bitmaps using '%*pb[l]'. cpumask and nodemask also provide cpumask_pr_args() and nodemask_pr_args() respectively which can be used to generate the two printf arguments necessary to format the specified cpu/nodemask. This patch is dependent on the following two patches. lib/vsprintf: implement bitmap printing through '%*pb[l]' cpumask, nodemask: implement cpumask/nodemask_pr_args() Please wait till the forementioned patches are merged to mainline before applying to subsystem trees. Signed-off-by: Tejun Heo Cc: Andrew Morton Cc: Thomas Gleixner --- kernel/time/tick-sched.c | 11 ++--------- 1 file changed, 2 insertions(+), 9 deletions(-) diff --git a/kernel/time/tick-sched.c b/kernel/time/tick-sched.c index 1363d58..a4c4eda 100644 --- a/kernel/time/tick-sched.c +++ b/kernel/time/tick-sched.c @@ -326,13 +326,6 @@ static int tick_nohz_cpu_down_callback(struct notifier_block *nfb, return NOTIFY_OK; } -/* - * Worst case string length in chunks of CPU range seems 2 steps - * separations: 0,2,4,6,... - * This is NR_CPUS + sizeof('\0') - */ -static char __initdata nohz_full_buf[NR_CPUS + 1]; - static int tick_nohz_init_all(void) { int err = -1; @@ -393,8 +386,8 @@ void __init tick_nohz_init(void) context_tracking_cpu_set(cpu); cpu_notifier(tick_nohz_cpu_down_callback, 0); - cpulist_scnprintf(nohz_full_buf, sizeof(nohz_full_buf), tick_nohz_full_mask); - pr_info("NO_HZ: Full dynticks CPUs: %s.\n", nohz_full_buf); + pr_info("NO_HZ: Full dynticks CPUs: %*pbl.\n", + cpumask_pr_args(tick_nohz_full_mask)); } #endif -- 2.1.0