linux-kernel - Re: [GIT PULL] cputime: Full dynticks task/cputime accounting v7

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Date:	Tue, 29 Jan 2013 12:08:54 -0500
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Frederic Weisbecker <fweisbec@...il.com>
Cc:	Ingo Molnar <mingo@...nel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Li Zhong <zhong@...ux.vnet.ibm.com>,
	Namhyung Kim <namhyung.kim@....com>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	Paul Gortmaker <paul.gortmaker@...driver.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Sedat Dilek <sedat.dilek@...il.com>,
	Gleb Natapov <gleb@...hat.com>,
	Marcelo Tosatti <mtosatti@...hat.com>,
	Tony Luck <tony.luck@...el.com>,
	Fenghua Yu <fenghua.yu@...el.com>
Subject: Re: [GIT PULL] cputime: Full dynticks task/cputime accounting v7

On Tue, 2013-01-29 at 17:55 +0100, Frederic Weisbecker wrote:

> 
> > Perhaps the best thing to do is to have the irq vtime determine usermode
> > or not with "user_mode(get_irq_regs())". I'll try it.
> 
> That will get rid of those few microsecond error margin but I bet
> that's not where the issue is.

Yep, you're right. Time to dig further ;-)

-- Steve


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