From: Peter Zijlstra <peterz@infradead.org>
To: Tim Sander <tim.sander@hbm.com>
Cc: linux-kernel <linux-kernel@vger.kernel.org>,
Thomas Gleixner <tglx@linutronix.de>,
"Paul E. McKenney" <paulmck@us.ibm.com>,
linux-rt-users <linux-rt-users@vger.kernel.org>
Subject: Re: [ANNOUNCE] 3.0.1-rt8 - Regression to 3.0-rt7
Date: Thu, 11 Aug 2011 18:39:41 +0200 [thread overview]
Message-ID: <1313080781.8491.6.camel@twins> (raw)
In-Reply-To: <201108111804.11136.tim.sander@hbm.com>
On Thu, 2011-08-11 at 18:04 +0200, Tim Sander wrote:
> Yes it works for CONFIG_PREEMPT_RTB=y and as you say not for
> CONFIG_PREEMPT_LL=y.
> +++ b/mm/filemap.c
> @@ -2040,7 +2040,7 @@ size_t iov_iter_copy_from_user_atomic(struct page *page,
> char *kaddr;
> size_t copied;
>
> - BUG_ON(!current->pagefault_disabled);
> + BUG_ON(!(in_atomic() || current->pagefault_disabled));
Ah, I had hoped that bit would have cured the PREEMPT_LL=y config.
But let me untangle that posix_cpu_timer stuff first, maybe that's in
the way.
next prev parent reply other threads:[~2011-08-11 16:40 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-08-05 21:44 [ANNOUNCE] 3.0.1-rt8 Peter Zijlstra
2011-08-08 13:55 ` rcu stalls running 3.0.1-rt8 Mike Galbraith
2011-08-08 23:10 ` Paul E. McKenney
2011-08-09 1:14 ` Mike Galbraith
2011-08-09 15:13 ` [ANNOUNCE] 3.0.1-rt8 - Regression to 3.0-rt7 Tim Sander
2011-08-11 9:43 ` Peter Zijlstra
2011-08-11 11:30 ` Tim Sander
2011-08-11 12:02 ` Peter Zijlstra
2011-08-11 12:52 ` Tim Sander
2011-08-11 12:52 ` Tim Sander
2011-08-11 15:28 ` Tim Sander
2011-08-11 15:28 ` Tim Sander
2011-08-11 12:41 ` Peter Zijlstra
2011-08-11 16:04 ` Tim Sander
2011-08-11 16:04 ` Tim Sander
2011-08-11 16:14 ` Peter Zijlstra
2011-08-11 16:22 ` Tim Sander
2011-08-11 16:41 ` Tim Sander
2011-08-11 16:41 ` Tim Sander
2011-08-11 16:39 ` Peter Zijlstra [this message]
2011-08-11 17:08 ` Tim Sander
2011-08-11 17:08 ` Tim Sander
2011-08-11 18:05 ` Peter Zijlstra
2011-08-11 18:05 ` Peter Zijlstra
2011-08-12 8:59 ` Tim Sander
2011-08-12 8:59 ` Tim Sander
2011-08-11 10:45 ` Peter Zijlstra
2011-08-11 15:36 ` Tim Sander
2011-08-11 15:36 ` Tim Sander
2011-08-09 18:31 ` [ANNOUNCE] 3.0.1-rt8 Fernando Lopez-Lezcano
2011-08-09 18:47 ` Peter Zijlstra
2011-08-10 1:08 ` Paul E. McKenney
2011-08-10 1:07 ` Paul E. McKenney
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