rcu: Select IRQ_WORK from TREE_PREEMPT_RCU · 5361471437 - Gogs

rcu: Select IRQ_WORK from TREE_PREEMPT_RCU

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.

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Dipankar Sarma <dipankar@in.ibm.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>

James Hogan 12 years ago

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c34ac00cae

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5361471437

1 changed files with 1 additions and 0 deletions

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				@@ -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