synchronize_hardirq — wait for pending hard IRQ handlers (on other CPUs)


bool synchronize_hardirq (unsigned int irq);


unsigned int irq

interrupt number to wait for


This function waits for any pending hard IRQ handlers for this interrupt to complete before returning. If you use this function while holding a resource the IRQ handler may need you will deadlock. It does not take associated threaded handlers into account.

Do not use this for shutdown scenarios where you must be sure that all parts (hardirq and threaded handler) have completed.


false if a threaded handler is active.

This function may be called - with care - from IRQ context.