From: Peter Zijlstra <peterz@infradead.org>
To: Steven Rostedt <rostedt@goodmis.org>
Cc: linux-kernel@vger.kernel.org, Ingo Molnar <mingo@elte.hu>,
Andrew Morton <akpm@linux-foundation.org>,
Frederic Weisbecker <fweisbec@gmail.com>,
Steven Rostedt <srostedt@redhat.com>,
Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
Subject: Re: [PATCH 2/4] nmi: add generic nmi tracking state
Date: Fri, 06 Feb 2009 10:34:51 +0100 [thread overview]
Message-ID: <1233912891.4731.1.camel@laptop> (raw)
In-Reply-To: <20090206065437.986292747@goodmis.org>
On Fri, 2009-02-06 at 01:53 -0500, Steven Rostedt wrote:
> This code adds an in_nmi() macro that uses the current tasks preempt count
> to track when it is in NMI context. Other parts of the kernel can
> use this to determine if the context is in NMI context or not.
>
> This code was inspired by the -rt patch in_nmi version that was
> written by Peter Zijlstra.
Which in turn I borrowed from Mathieu.
next prev parent reply other threads:[~2009-02-06 9:35 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-02-06 6:53 [PATCH 0/4] ftrace: updates for tip Steven Rostedt
2009-02-06 6:53 ` [PATCH 1/4] ftrace, x86: rename in_nmi variable Steven Rostedt
2009-02-06 6:53 ` [PATCH 2/4] nmi: add generic nmi tracking state Steven Rostedt
2009-02-06 7:12 ` Andrew Morton
2009-02-06 13:25 ` Steven Rostedt
2009-02-06 17:10 ` Andrew Morton
2009-02-06 17:22 ` Steven Rostedt
2009-02-06 9:34 ` Peter Zijlstra [this message]
2009-02-06 14:46 ` Ingo Molnar
2009-02-06 14:50 ` Steven Rostedt
2009-02-06 14:54 ` Ingo Molnar
2009-02-06 14:59 ` Steven Rostedt
2009-02-06 15:16 ` Ingo Molnar
2009-02-06 15:33 ` Frederic Weisbecker
2009-02-06 15:43 ` Ingo Molnar
2009-02-06 6:53 ` [PATCH 3/4] ftrace: change function graph tracer to use new in_nmi Steven Rostedt
2009-02-06 6:53 ` [PATCH 4/4] ring-buffer: use generic version of in_nmi Steven Rostedt
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