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From: Richard Weinberger <richard@nod.at>
To: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>,
	linux-kernel@vger.kernel.org
Cc: mingo@kernel.org, jiangshanlai@gmail.com, dipankar@in.ibm.com,
	akpm@linux-foundation.org, mathieu.desnoyers@efficios.com,
	josh@joshtriplett.org, tglx@linutronix.de, peterz@infradead.org,
	rostedt@goodmis.org, dhowells@redhat.com, edumazet@google.com,
	dvhart@linux.intel.com, fweisbec@gmail.com, oleg@redhat.com,
	bobby.prani@gmail.com, Jeff Dike <jdike@addtoit.com>
Subject: Re: [PATCH tip/core/rcu 08/12] rcu: Disable TASKS_RCU for usermode Linux
Date: Wed, 15 Jun 2016 23:47:42 +0200	[thread overview]
Message-ID: <5761CCFE.9000308@nod.at> (raw)
In-Reply-To: <1466027173-5501-8-git-send-email-paulmck@linux.vnet.ibm.com>

Am 15.06.2016 um 23:46 schrieb Paul E. McKenney:
> Usermode Linux currently does not implement arch_irqs_disabled_flags(),
> which results in a build failure in TASKS_RCU.  Therefore, this commit
> disables the TASKS_RCU Kconfig option in usermode Linux builds.  The
> usermode Linux maintainers expect to merge arch_irqs_disabled_flags()
> into 4.8, at which point this commit may be reverted.
> 
> Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
> Cc: Richard Weinberger <richard@nod.at>
> Cc: Jeff Dike <jdike@addtoit.com>
> ---
>  init/Kconfig | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/init/Kconfig b/init/Kconfig
> index f755a602d4a1..a068265fbcaf 100644
> --- a/init/Kconfig
> +++ b/init/Kconfig
> @@ -517,6 +517,7 @@ config SRCU
>  config TASKS_RCU
>  	bool
>  	default n
> +	depends on !UML
>  	select SRCU
>  	help
>  	  This option enables a task-based RCU implementation that uses

Acked-by: Richard Weinberger <richard@nod.at>

Thanks,
//richard

  reply	other threads:[~2016-06-15 21:48 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-06-15 21:45 [PATCH tip/core/rcu 0/12] Miscellaneous RCU fixes for 4.8 Paul E. McKenney
2016-06-15 21:46 ` [PATCH tip/core/rcu 01/12] rcu: Fix outdated rcu_scheduler_active comment Paul E. McKenney
2016-06-15 21:46 ` [PATCH tip/core/rcu 02/12] rcu: Fix outdated hotplug-exclusion comment in rcu_gp_init() Paul E. McKenney
2016-06-15 21:46 ` [PATCH tip/core/rcu 03/12] rcu: Remove some superfluous lines Paul E. McKenney
2016-06-15 21:46 ` [PATCH tip/core/rcu 04/12] rcu: Move expedited code from tree.c to tree_exp.h Paul E. McKenney
2016-06-15 22:05   ` Peter Zijlstra
2016-06-15 22:16     ` Paul E. McKenney
2016-06-17 15:48   ` Pranith Kumar
2016-06-17 17:46     ` Paul E. McKenney
2016-06-15 21:46 ` [PATCH tip/core/rcu 05/12] rcu: Move expedited code from tree_plugin.h " Paul E. McKenney
2016-06-15 21:46 ` [PATCH tip/core/rcu 06/12] rcu: Document RCU_NONIDLE() restrictions in comment header Paul E. McKenney
2016-06-15 21:46 ` [PATCH tip/core/rcu 07/12] rcu: No ordering for rcu_assign_pointer() of NULL Paul E. McKenney
2016-06-15 22:03   ` Peter Zijlstra
2016-06-15 22:12     ` Peter Zijlstra
2016-06-15 22:41       ` Paul E. McKenney
2016-06-15 21:46 ` [PATCH tip/core/rcu 08/12] rcu: Disable TASKS_RCU for usermode Linux Paul E. McKenney
2016-06-15 21:47   ` Richard Weinberger [this message]
2016-06-15 21:46 ` [PATCH tip/core/rcu 09/12] rcu: Make call_rcu_tasks() tolerate first call with irqs disabled Paul E. McKenney
2016-06-15 22:15   ` Peter Zijlstra
2016-06-15 22:54     ` Paul E. McKenney
2016-06-15 22:16   ` Peter Zijlstra
2016-06-15 22:58     ` Paul E. McKenney
2016-06-15 21:46 ` [PATCH tip/core/rcu 10/12] rcu: Fix a typo in a comment Paul E. McKenney
2016-06-15 21:46 ` [PATCH tip/core/rcu 11/12] rcu: sysctl: Panic on RCU Stall Paul E. McKenney
2016-06-15 21:46 ` [PATCH tip/core/rcu 12/12] rcu: Correctly handle sparse possible cpus Paul E. McKenney

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