1SYNCHRONIZE_HARDIRQ(9)     Public Functions Provided    SYNCHRONIZE_HARDIRQ(9)
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NAME

6       synchronize_hardirq - wait for pending hard IRQ handlers (on other
7       CPUs)
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SYNOPSIS

10       bool synchronize_hardirq(unsigned int irq);
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ARGUMENTS

13       irq
14           interrupt number to wait for
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DESCRIPTION

17       This function waits for any pending hard IRQ handlers for this
18       interrupt to complete before returning. If you use this function while
19       holding a resource the IRQ handler may need you will deadlock. It does
20       not take associated threaded handlers into account.
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22       Do not use this for shutdown scenarios where you must be sure that all
23       parts (hardirq and threaded handler) have completed.
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RETURNS

26       false if a threaded handler is active.
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28       This function may be called - with care - from IRQ context.
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AUTHORS

31       Thomas Gleixner <tglx@linutronix.de>
32           Author.
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34       Ingo Molnar <mingo@elte.hu>
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38Kernel Hackers Manual 3.10         June 2019            SYNCHRONIZE_HARDIRQ(9)
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