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authorPeter Zijlstra <peterz@infradead.org>2014-09-06 17:43:02 +0400
committerFrederic Weisbecker <fweisbec@gmail.com>2014-09-13 20:38:07 +0400
commitc5c38ef3d70377dc504a6a3f611a3ec814bc757b (patch)
treea2ff73cef2176bc5a94b7ed4944915102428b52e /include/linux/irq_work.h
parenta80e49e2cc3145af014a8ae44f575829cc236192 (diff)
downloadlinux-c5c38ef3d70377dc504a6a3f611a3ec814bc757b.tar.xz
irq_work: Introduce arch_irq_work_has_interrupt()
The nohz full code needs irq work to trigger its own interrupt so that the subsystem can work even when the tick is stopped. Lets introduce arch_irq_work_has_interrupt() that archs can override to tell about their support for this ability. Signed-off-by: Peter Zijlstra <peterz@infradead.org> Cc: Ingo Molnar <mingo@kernel.org> Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Diffstat (limited to 'include/linux/irq_work.h')
-rw-r--r--include/linux/irq_work.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/irq_work.h b/include/linux/irq_work.h
index bf9422c3aefe..6b47b2ede405 100644
--- a/include/linux/irq_work.h
+++ b/include/linux/irq_work.h
@@ -42,6 +42,8 @@ void irq_work_run(void);
void irq_work_sync(struct irq_work *work);
#ifdef CONFIG_IRQ_WORK
+#include <asm/irq_work.h>
+
bool irq_work_needs_cpu(void);
#else
static inline bool irq_work_needs_cpu(void) { return false; }