Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754444Ab3JJLZo (ORCPT ); Thu, 10 Oct 2013 07:25:44 -0400 Received: from terminus.zytor.com ([198.137.202.10]:42053 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752861Ab3JJLZn (ORCPT ); Thu, 10 Oct 2013 07:25:43 -0400 Date: Thu, 10 Oct 2013 04:25:17 -0700 From: tip-bot for Dong Zhu Message-ID: Cc: linux-kernel@vger.kernel.org, john.stultz@linaro.org, bluezhudong@gmail.com, hpa@zytor.com, mingo@kernel.org, tglx@linutronix.de Reply-To: mingo@kernel.org, hpa@zytor.com, bluezhudong@gmail.com, john.stultz@linaro.org, linux-kernel@vger.kernel.org, tglx@linutronix.de In-Reply-To: <20131010075618.GH2139@zhudong.nay.redhat.com> References: <20131010075618.GH2139@zhudong.nay.redhat.com> To: linux-tip-commits@vger.kernel.org Subject: [tip:timers/core] timer stats: Add a 'Collection: active/inactive ' line to timer usage statistics Git-Commit-ID: 2cb763614c1c5baef58045af9304265075f22d0a X-Mailer: tip-git-log-daemon Robot-ID: Robot-Unsubscribe: Contact to get blacklisted from these emails MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset=UTF-8 Content-Disposition: inline X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.1 (terminus.zytor.com [127.0.0.1]); Thu, 10 Oct 2013 04:25:23 -0700 (PDT) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2326 Lines: 59 Commit-ID: 2cb763614c1c5baef58045af9304265075f22d0a Gitweb: http://git.kernel.org/tip/2cb763614c1c5baef58045af9304265075f22d0a Author: Dong Zhu AuthorDate: Thu, 10 Oct 2013 15:56:18 +0800 Committer: Ingo Molnar CommitDate: Thu, 10 Oct 2013 09:59:25 +0200 timer stats: Add a 'Collection: active/inactive' line to timer usage statistics We can enable/disable timer statistics collection via: echo [1|0] > /proc/timers_stats and it would be nice if apps had the ability to check what the current collection status is. This patch adds a 'Collection: active/inactive' line to display the current timer collection status. Also bump up the timer stats version to v0.3. Signed-off-by: Dong Zhu Cc: John Stultz Link: http://lkml.kernel.org/r/20131010075618.GH2139@zhudong.nay.redhat.com [ Improved the changelog and the code. ] Signed-off-by: Ingo Molnar --- kernel/time/timer_stats.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/kernel/time/timer_stats.c b/kernel/time/timer_stats.c index 0b537f2..1fb08f2 100644 --- a/kernel/time/timer_stats.c +++ b/kernel/time/timer_stats.c @@ -298,15 +298,15 @@ static int tstats_show(struct seq_file *m, void *v) period = ktime_to_timespec(time); ms = period.tv_nsec / 1000000; - seq_puts(m, "Timer Stats Version: v0.2\n"); + seq_puts(m, "Timer Stats Version: v0.3\n"); seq_printf(m, "Sample period: %ld.%03ld s\n", period.tv_sec, ms); if (atomic_read(&overflow_count)) - seq_printf(m, "Overflow: %d entries\n", - atomic_read(&overflow_count)); + seq_printf(m, "Overflow: %d entries\n", atomic_read(&overflow_count)); + seq_printf(m, "Collection: %s\n", timer_stats_active ? "active" : "inactive"); for (i = 0; i < nr_entries; i++) { entry = entries + i; - if (entry->timer_flag & TIMER_STATS_FLAG_DEFERRABLE) { + if (entry->timer_flag & TIMER_STATS_FLAG_DEFERRABLE) { seq_printf(m, "%4luD, %5d %-16s ", entry->count, entry->pid, entry->comm); } else { -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/