On Thu, Jul 25, 2013 at 03:34:25PM +0100, James Hogan wrote:
> TREE_RCU and TREE_PREEMPT_RCU both cause kernel/rcutree.c to be built,
> but only TREE_RCU selects IRQ_WORK, which can result in an undefined
> reference to irq_work_queue for some (random) configs:
>
> kernel/built-in.o In function `rcu_start_gp_advanced':
> kernel/rcutree.c:1564: undefined reference to `irq_work_queue'
>
> Select IRQ_WORK from TREE_PREEMPT_RCU too to fix this.
Queued for 3.12, good catch, James!
Thanx, Paul
> Signed-off-by: James Hogan <james.ho...@imgtec.com>
> Cc: Steven Rostedt <rost...@goodmis.org>
> Cc: Paul E. McKenney <paul...@linux.vnet.ibm.com>
> Cc: Dipankar Sarma <dipan...@in.ibm.com>
> ---
> init/Kconfig | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/init/Kconfig b/init/Kconfig
> index 247084b..c08a549 100644
> --- a/init/Kconfig
> +++ b/init/Kconfig
> @@ -470,6 +470,7 @@ config TREE_RCU
> config TREE_PREEMPT_RCU
> bool "Preemptible tree-based hierarchical RCU"
> depends on PREEMPT
> + select IRQ_WORK
> help
> This option selects the RCU implementation that is
> designed for very large SMP systems with hundreds or
> --
> 1.8.1.2
>
>
> --
> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> the body of a message to majord...@vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html
> Please read the FAQ at http://www.tux.org/lkml/
>
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
