diff options
| author | Peter Zijlstra <peterz@infradead.org> | 2014-09-06 17:43:02 +0400 |
|---|---|---|
| committer | Frederic Weisbecker <fweisbec@gmail.com> | 2014-09-13 20:38:07 +0400 |
| commit | c5c38ef3d70377dc504a6a3f611a3ec814bc757b (patch) | |
| tree | a2ff73cef2176bc5a94b7ed4944915102428b52e /include | |
| parent | a80e49e2cc3145af014a8ae44f575829cc236192 (diff) | |
| download | linux-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')
| -rw-r--r-- | include/asm-generic/irq_work.h | 10 | ||||
| -rw-r--r-- | include/linux/irq_work.h | 2 |
2 files changed, 12 insertions, 0 deletions
diff --git a/include/asm-generic/irq_work.h b/include/asm-generic/irq_work.h new file mode 100644 index 000000000000..a44f452c6590 --- /dev/null +++ b/include/asm-generic/irq_work.h @@ -0,0 +1,10 @@ +#ifndef __ASM_IRQ_WORK_H +#define __ASM_IRQ_WORK_H + +static inline bool arch_irq_work_has_interrupt(void) +{ + return false; +} + +#endif /* __ASM_IRQ_WORK_H */ + 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; } |