[PATCH] sched/rt: hide push_irq_work_func declaration

Arnd Bergmann arnd at arndb.de
Thu Nov 12 06:22:22 PST 2015

The push_irq_work_func() function is conditionally defined only
when both CONFIG_SMP and HAVE_RT_PUSH_IPI are defined, but the
forward declaration remains visibile without HAVE_RT_PUSH_IPI,
causing a gcc warning in ARM64 allnoconfig:

kernel/sched/rt.c:68:13: warning: 'push_irq_work_func' declared 'static' but never defined [-Wunused-function]

This changes the code to use the same condition for both the
declaration and the function definition, which gets rid of the

Signed-off-by: Arnd Bergmann <arnd at arndb.de>
Fixes: b6366f048e0c ("sched/rt: Use IPI to trigger RT task push migration instead of pulling")
Found on arm64 allnoconfig

diff --git a/kernel/sched/rt.c b/kernel/sched/rt.c
index e3cc16312046..ce7b36d6f477 100644
--- a/kernel/sched/rt.c
+++ b/kernel/sched/rt.c
@@ -64,7 +64,7 @@ static void start_rt_bandwidth(struct rt_bandwidth *rt_b)
-#ifdef CONFIG_SMP
 static void push_irq_work_func(struct irq_work *work);

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