From: Andrew Morton <akpm@linux-foundation.org>
To: Tim Bird <tim.bird@am.sony.com>
Cc: a.p.zijlstra@chello.nl, rostedt@goodmis.org, dwalker@mvista.com,
linux-kernel@vger.kernel.org, mingo@elte.hu,
torvalds@linux-foundation.org, hch@infradead.org,
mathieu.desnoyers@polymtl.ca, ghaskins@novell.com,
acme@ghostprotocols.net, tglx@linutronix.de, sam@ravnborg.org,
fche@redhat.com, jan.kiszka@siemens.com, johnstul@us.ibm.com,
arjan@infradead.org, srostedt@redhat.com
Subject: Re: [PATCH] defer printks in irqs
Date: Sat, 26 Jan 2008 22:01:51 -0800 [thread overview]
Message-ID: <20080126220151.784893b1.akpm@linux-foundation.org> (raw)
In-Reply-To: <47991DD7.9070009@am.sony.com>
> On Thu, 24 Jan 2008 15:23:03 -0800 Tim Bird <tim.bird@am.sony.com> wrote:
> Peter Zijlstra wrote:
> > I suspect these features reduce the chance a crash messages makes it out
> > onto the console, but fail to spot any of the copious text mention this
> > critical issue.
>
> Anything not in interrupts would not be deferred.
> The following code is meant to avoid deferring in oops as well.
> I'm not sure if that covers all crash cases or not.
> If you know of other cases, and ways to detect them, please advise.
>
Yes, using oops_in_progress seems an appropriate fix for that.
I assume that another downside is that printk-from-interrupt will now get
jumbled up with an interrupted pritk-from-non-interrupt.
Please use checkpatch.
next prev parent reply other threads:[~2008-01-27 6:04 UTC|newest]
Thread overview: 54+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-01-23 16:02 [PATCH 00/20 -v5] mcount and latency tracing utility -v5 Steven Rostedt
2008-01-23 16:02 ` [PATCH 01/20 -v5] printk - dont wakeup klogd with interrupts disabled Steven Rostedt
2008-01-23 17:06 ` Daniel Walker
2008-01-23 17:25 ` Mathieu Desnoyers
2008-01-23 17:49 ` Tim Bird
2008-01-24 10:35 ` Pavel Machek
2008-01-23 17:27 ` Steven Rostedt
2008-01-23 17:32 ` Mathieu Desnoyers
2008-01-23 17:43 ` Daniel Walker
2008-01-23 18:18 ` Steven Rostedt
2008-01-23 18:28 ` Daniel Walker
2008-01-23 18:43 ` Steven Rostedt
2008-01-23 18:50 ` Daniel Walker
2008-01-23 19:59 ` Daniel Walker
2008-01-24 22:42 ` [PATCH] defer printks in irqs Tim Bird
2008-01-24 22:48 ` Peter Zijlstra
2008-01-24 23:23 ` Tim Bird
2008-01-27 6:01 ` Andrew Morton [this message]
2008-01-28 21:14 ` Tim Bird
2008-01-24 10:36 ` [PATCH 01/20 -v5] printk - dont wakeup klogd with interrupts disabled Pavel Machek
2008-01-23 16:02 ` [PATCH 02/20 -v5] Add basic support for gcc profiler instrumentation Steven Rostedt
2008-01-23 16:02 ` [PATCH 03/20 -v5] Annotate core code that should not be traced Steven Rostedt
2008-01-23 16:02 ` [PATCH 04/20 -v5] x86_64: notrace annotations Steven Rostedt
2008-01-23 16:02 ` [PATCH 05/20 -v5] add notrace annotations to vsyscall Steven Rostedt
2008-01-23 16:02 ` [PATCH 06/20 -v5] add notrace annotations for NMI routines Steven Rostedt
2008-01-23 21:31 ` Mathieu Desnoyers
2008-01-23 21:58 ` Steven Rostedt
2008-01-26 5:25 ` Steven Rostedt
2008-01-28 11:51 ` Jan Kiszka
2008-01-28 12:15 ` Steven Rostedt
2008-01-23 16:02 ` [PATCH 07/20 -v5] handle accurate time keeping over long delays Steven Rostedt
2008-01-23 16:02 ` [PATCH 08/20 -v5] initialize the clock source to jiffies clock Steven Rostedt
2008-01-23 16:40 ` Tim Bird
2008-01-23 16:02 ` [PATCH 09/20 -v5] add get_monotonic_cycles Steven Rostedt
2008-01-23 16:02 ` [PATCH 10/20 -v5] add notrace annotations to timing events Steven Rostedt
2008-01-23 16:02 ` [PATCH 11/20 -v5] mcount based trace in the form of a header file library Steven Rostedt
2008-01-23 16:02 ` [PATCH 12/20 -v5] Add context switch marker to sched.c Steven Rostedt
2008-01-23 16:02 ` [PATCH 13/20 -v5] Make the task State char-string visible to all Steven Rostedt
2008-01-23 16:02 ` [PATCH 14/20 -v5] Add tracing of context switches Steven Rostedt
2008-01-23 16:02 ` [PATCH 15/20 -v5] Generic command line storage Steven Rostedt
2008-01-23 16:02 ` [PATCH 16/20 -v5] trace generic call to schedule switch Steven Rostedt
2008-01-23 16:02 ` [PATCH 17/20 -v5] Add marker in try_to_wake_up Steven Rostedt
2008-01-23 16:02 ` [PATCH 18/20 -v5] mcount tracer for wakeup latency timings Steven Rostedt
2008-01-23 16:02 ` [PATCH 19/20 -v5] Trace irq disabled critical timings Steven Rostedt
2008-01-23 16:53 ` Steven Rostedt
2008-01-23 17:11 ` Steven Rostedt
2008-01-23 17:27 ` Frank Ch. Eigler
2008-01-23 17:45 ` Steven Rostedt
2008-01-23 17:54 ` Mathieu Desnoyers
2008-01-23 17:58 ` Peter Zijlstra
2008-01-23 18:25 ` Frank Ch. Eigler
2008-01-23 18:48 ` Steven Rostedt
2008-01-23 21:29 ` Mathieu Desnoyers
2008-01-23 16:02 ` [PATCH 20/20 -v5] trace preempt off " Steven Rostedt
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