From: Paul Bolle <pebolle@tiscali.nl>
To: John Stultz <john.stultz@linaro.org>
Cc: lkml <linux-kernel@vger.kernel.org>,
Dave Jones <davej@codemonkey.org.uk>,
Linus Torvalds <torvalds@linux-foundation.org>,
Thomas Gleixner <tglx@linutronix.de>,
Richard Cochran <richardcochran@gmail.com>,
Prarit Bhargava <prarit@redhat.com>,
Stephen Boyd <sboyd@codeaurora.org>,
Ingo Molnar <mingo@kernel.org>,
Peter Zijlstra <peterz@infradead.org>
Subject: Re: [PATCH 05/12] time: Add debugging checks to warn if we see delays
Date: Sat, 07 Mar 2015 10:22:36 +0100 [thread overview]
Message-ID: <1425720156.24292.289.camel@x220> (raw)
In-Reply-To: <1425696603-16878-6-git-send-email-john.stultz@linaro.org>
On Fri, 2015-03-06 at 18:49 -0800, John Stultz wrote:
> +config DEBUG_TIMEKEEPING
> + bool "Enable extra timekeeping sanity checking"
> + help
> + This option will enable additional timekeeping sanity checks
> + which may be helpful when diagnoising issues where timekeeping
diagnoise, verb:
to diagnose a problem by generating a large amount of data
see also: printk debugging
> + problems are suspected.
> +
> + This may include checks in the timekeeping hotpaths, so this
> + option may have a performance impact to some workloads.
> +
> + If unsure, say N.
> +
Paul Bolle
next prev parent reply other threads:[~2015-03-07 9:22 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-03-07 2:49 [PATCH 00/12] Increased clocksource validation and cleanups (v3) John Stultz
2015-03-07 2:49 ` [PATCH 01/12] clocksource: Simplify clocks_calc_max_nsecs logic John Stultz
2015-03-07 9:20 ` Ingo Molnar
2015-03-07 2:49 ` [PATCH 02/12] clocksource: Simplify logic around clocksource wrapping saftey margins John Stultz
2015-03-07 9:22 ` Ingo Molnar
2015-03-07 2:49 ` [PATCH 03/12] clocksource: Remove clocksource_max_deferment() John Stultz
2015-03-07 9:18 ` Ingo Molnar
2015-03-07 2:49 ` [PATCH 04/12] clocksource: Add max_cycles to clocksource structure John Stultz
2015-03-07 9:54 ` Ingo Molnar
2015-03-07 2:49 ` [PATCH 05/12] time: Add debugging checks to warn if we see delays John Stultz
2015-03-07 9:22 ` Paul Bolle [this message]
2015-03-07 9:29 ` Ingo Molnar
2015-03-07 2:49 ` [PATCH 06/12] time: Add infrastructure to cap clocksource reads to the max_cycles value John Stultz
2015-03-07 9:32 ` Ingo Molnar
2015-03-07 2:49 ` [PATCH 07/12] time: Try to catch clocksource delta underflows John Stultz
2015-03-07 9:34 ` Ingo Molnar
2015-03-07 2:49 ` [PATCH 08/12] time: Add warnings when overflows or underflows are observed John Stultz
2015-03-07 9:40 ` Ingo Molnar
2015-03-09 16:50 ` John Stultz
2015-03-10 5:05 ` Ingo Molnar
2015-03-07 2:50 ` [PATCH 09/12] clocksource: Improve clocksource watchdog reporting John Stultz
2015-03-07 2:50 ` [PATCH 10/12] clocksource: Mostly kill clocksource_register() John Stultz
2015-03-07 9:45 ` Ingo Molnar
2015-03-07 2:50 ` [PATCH 11/12] sparc: Convert to using clocksource_register_hz() John Stultz
2015-03-07 9:46 ` Ingo Molnar
2015-03-07 2:50 ` [PATCH 12/12] clocksource: Add some debug info about clocksources being registered John Stultz
2015-03-07 9:50 ` Ingo Molnar
2015-03-12 3:16 ` John Stultz
-- strict thread matches above, loose matches on Subject: below --
2015-01-23 0:09 [PATCH 00/12][RFC] Increased clocksource validation and cleanups (v2) John Stultz
2015-01-23 0:09 ` [PATCH 05/12] time: Add debugging checks to warn if we see delays John Stultz
2015-01-23 14:27 ` Peter Zijlstra
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