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EVENTFD_SIGNAL(9)	Events based on file descripto	     EVENTFD_SIGNAL(9)

NAME
       eventfd_signal - Adds n to the eventfd counter.

SYNOPSIS
       __u64 eventfd_signal(struct eventfd_ctx * ctx, __u64 n);

ARGUMENTS
       ctx
	   [in] Pointer to the eventfd context.

       n
	   [in] Value of the counter to be added to the eventfd internal
	   counter. The value cannot be negative.

DESCRIPTION
       This function is supposed to be called by the kernel in paths that do
       not allow sleeping. In this function we allow the counter to reach the
       ULLONG_MAX value, and we signal this as overflow condition by
       returining a POLLERR to poll(2).

       Returns the amount by which the counter was incrememnted. This will be
       less than n if the counter has overflowed.

COPYRIGHT
Kernel Hackers Manual 3.11	 November 2013		     EVENTFD_SIGNAL(9)

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