From: Daniel Thompson <daniel.thompson@linaro.org>
To: Chris Metcalf <cmetcalf@ezchip.com>
Cc: Russell King <linux@arm.linux.org.uk>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, Andrew Morton <akpm@osdl.org>,
linux-kernel@vger.kernel.org, Aaron Tomlin <atomlin@redhat.com>
Subject: Re: [PATCH 2/4] nmi_backtrace: generate one-line reports for idle cpus
Date: Tue, 1 Mar 2016 14:23:34 +0000 [thread overview]
Message-ID: <56D5A5E6.9050206@linaro.org> (raw)
In-Reply-To: <1456782024-7122-3-git-send-email-cmetcalf@ezchip.com>
On 29/02/16 21:40, Chris Metcalf wrote:
> When doing an nmi backtrace of many cores, and most of them are idle,
> the output is a little overwhelming and very uninformative. Suppress
> messages for cpus that are idling when they are interrupted and
> just emit one line, "NMI backtrace for N skipped: idle".
I can see this makes the logs more attractive but this is code for
emergency situations.
The idle task is responsible for certain power management activities.
How can you be sure the system is wedged because of bugs in that code?
Daniel.
next prev parent reply other threads:[~2016-03-01 14:23 UTC|newest]
Thread overview: 121+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-02-29 21:40 [PATCH 0/4] improvements to the nmi_backtrace code Chris Metcalf
2016-02-29 21:40 ` Chris Metcalf
2016-02-29 21:40 ` [PATCH 1/4] nmi_backtrace: add more trigger_*_cpu_backtrace() methods Chris Metcalf
2016-02-29 21:40 ` Chris Metcalf
2016-02-29 21:40 ` [PATCH 2/4] nmi_backtrace: generate one-line reports for idle cpus Chris Metcalf
2016-03-01 14:23 ` Daniel Thompson [this message]
2016-03-01 16:01 ` Chris Metcalf
2016-03-07 8:26 ` Daniel Thompson
2016-03-07 17:05 ` Chris Metcalf
2016-03-07 9:48 ` Peter Zijlstra
2016-03-07 17:38 ` Chris Metcalf
2016-03-07 20:43 ` Peter Zijlstra
2016-03-16 17:02 ` [PATCH v2 0/4] improvements to the nmi_backtrace code Chris Metcalf
2016-03-16 17:02 ` Chris Metcalf
2016-03-16 17:02 ` Chris Metcalf
2016-03-16 17:02 ` Chris Metcalf
2016-03-16 17:02 ` [PATCH v2 1/4] nmi_backtrace: add more trigger_*_cpu_backtrace() methods Chris Metcalf
2016-03-16 17:02 ` Chris Metcalf
2016-03-17 19:36 ` Peter Zijlstra
2016-03-17 19:36 ` Peter Zijlstra
2016-03-17 22:31 ` Chris Metcalf
2016-03-17 22:31 ` Chris Metcalf
2016-03-17 22:38 ` Peter Zijlstra
2016-03-17 22:38 ` Peter Zijlstra
2016-03-17 22:41 ` Chris Metcalf
2016-03-17 22:41 ` Chris Metcalf
2016-03-17 23:14 ` Peter Zijlstra
2016-03-17 23:14 ` Peter Zijlstra
2016-03-17 22:55 ` Paul E. McKenney
2016-03-17 22:55 ` Paul E. McKenney
2016-03-17 23:09 ` Peter Zijlstra
2016-03-17 23:09 ` Peter Zijlstra
2016-03-17 23:11 ` Peter Zijlstra
2016-03-17 23:11 ` Peter Zijlstra
2016-03-18 0:28 ` Paul E. McKenney
2016-03-18 0:28 ` Paul E. McKenney
2016-03-18 0:17 ` Chris Metcalf
2016-03-18 0:17 ` Chris Metcalf
2016-03-18 0:33 ` Paul E. McKenney
2016-03-18 0:33 ` Paul E. McKenney
2016-03-18 9:40 ` Daniel Thompson
2016-03-18 9:40 ` Daniel Thompson
2016-03-18 23:54 ` Paul E. McKenney
2016-03-18 23:54 ` Paul E. McKenney
2016-03-16 17:02 ` [PATCH v2 2/4] nmi_backtrace: do a local dump_stack() instead of a self-NMI Chris Metcalf
2016-03-16 17:02 ` Chris Metcalf
2016-03-16 17:02 ` [PATCH v2 3/4] arch/tile: adopt the new nmi_backtrace framework Chris Metcalf
2016-03-16 17:02 ` [PATCH v2 4/4] nmi_backtrace: generate one-line reports for idle cpus Chris Metcalf
2016-03-16 17:02 ` Chris Metcalf
2016-03-16 17:02 ` Chris Metcalf
2016-03-16 18:46 ` kbuild test robot
2016-03-16 18:46 ` kbuild test robot
2016-03-16 18:46 ` kbuild test robot
2016-03-16 18:46 ` kbuild test robot
2016-03-21 15:38 ` Peter Zijlstra
2016-03-21 15:38 ` Peter Zijlstra
2016-03-21 15:38 ` Peter Zijlstra
2016-03-21 15:46 ` Chris Metcalf
2016-03-21 15:46 ` Chris Metcalf
2016-03-21 15:46 ` Chris Metcalf
2016-03-21 15:46 ` Chris Metcalf
2016-03-21 15:42 ` Peter Zijlstra
2016-03-21 15:42 ` Peter Zijlstra
2016-03-21 16:15 ` Chris Metcalf
2016-03-21 16:15 ` Chris Metcalf
2016-03-21 16:15 ` Chris Metcalf
2016-03-21 16:32 ` Peter Zijlstra
2016-03-21 16:32 ` Peter Zijlstra
2016-03-21 17:12 ` Chris Metcalf
2016-03-21 17:12 ` Chris Metcalf
2016-03-21 17:12 ` Chris Metcalf
2016-03-21 17:12 ` Chris Metcalf
2016-03-21 17:17 ` Peter Zijlstra
2016-03-21 17:17 ` Peter Zijlstra
2016-03-21 16:48 ` Peter Zijlstra
2016-03-21 16:48 ` Peter Zijlstra
2016-03-21 21:49 ` Peter Zijlstra
2016-03-21 21:49 ` Peter Zijlstra
2016-03-22 17:19 ` [PATCH v3 0/4] improvements to the nmi_backtrace code Chris Metcalf
2016-03-22 17:19 ` Chris Metcalf
2016-03-22 17:19 ` Chris Metcalf
2016-03-22 17:19 ` Chris Metcalf
2016-03-22 17:19 ` [PATCH v3 1/4] nmi_backtrace: add more trigger_*_cpu_backtrace() methods Chris Metcalf
2016-03-22 17:19 ` Chris Metcalf
2016-03-22 17:19 ` [PATCH v3 2/4] nmi_backtrace: do a local dump_stack() instead of a self-NMI Chris Metcalf
2016-03-22 17:19 ` Chris Metcalf
2016-03-22 17:19 ` [PATCH v3 3/4] arch/tile: adopt the new nmi_backtrace framework Chris Metcalf
2016-03-22 17:19 ` [PATCH v3 4/4] nmi_backtrace: generate one-line reports for idle cpus Chris Metcalf
2016-03-22 17:19 ` Chris Metcalf
2016-03-22 17:19 ` Chris Metcalf
2016-03-22 17:30 ` Peter Zijlstra
2016-03-22 17:30 ` Peter Zijlstra
2016-03-22 22:28 ` Rafael J. Wysocki
2016-03-22 22:28 ` Rafael J. Wysocki
2016-03-22 22:31 ` Rafael J. Wysocki
2016-03-22 22:31 ` Rafael J. Wysocki
2016-03-22 22:45 ` Peter Zijlstra
2016-03-22 22:45 ` Peter Zijlstra
2016-03-23 0:50 ` Rafael J. Wysocki
2016-03-23 0:50 ` Rafael J. Wysocki
2016-03-23 7:53 ` Peter Zijlstra
2016-03-23 7:53 ` Peter Zijlstra
2016-03-30 17:16 ` [PATCH v4 0/4] improvements to the nmi_backtrace code Chris Metcalf
2016-03-30 17:16 ` Chris Metcalf
2016-03-30 17:16 ` Chris Metcalf
2016-03-30 17:16 ` Chris Metcalf
2016-03-30 17:16 ` [PATCH v4 1/4] nmi_backtrace: add more trigger_*_cpu_backtrace() methods Chris Metcalf
2016-03-30 17:16 ` Chris Metcalf
2016-03-30 17:16 ` [PATCH v4 2/4] nmi_backtrace: do a local dump_stack() instead of a self-NMI Chris Metcalf
2016-03-30 17:16 ` Chris Metcalf
2016-03-30 17:16 ` [PATCH v4 3/4] arch/tile: adopt the new nmi_backtrace framework Chris Metcalf
2016-03-30 17:16 ` [PATCH v4 4/4] nmi_backtrace: generate one-line reports for idle cpus Chris Metcalf
2016-03-30 17:16 ` Chris Metcalf
2016-03-30 17:16 ` Chris Metcalf
2016-02-29 21:40 ` [PATCH 3/4] nmi_backtrace: do a local dump_stack() instead of a self-NMI Chris Metcalf
2016-02-29 21:40 ` Chris Metcalf
2016-02-29 21:40 ` [PATCH 4/4] arch/tile: adopt the new nmi_backtrace framework Chris Metcalf
2016-03-01 0:49 ` [PATCH 0/4] improvements to the nmi_backtrace code Andrew Morton
2016-03-01 0:49 ` Andrew Morton
2016-03-01 10:01 ` Petr Mladek
2016-03-01 10:01 ` Petr Mladek
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