FENCE_IS_SIGNALED(9)              Device drivers infrastructure              FENCE_IS_SIGNALED(9)



NAME
       fence_is_signaled - Return an indication if the fence is signaled yet.

SYNOPSIS
       bool fence_is_signaled(struct fence * fence);

ARGUMENTS
       fence
           [in] the fence to check

DESCRIPTION
       Returns true if the fence was already signaled, false if not. Since this function doesn't
       enable signaling, it is not guaranteed to ever return true if fence_add_callback,
       fence_wait or fence_enable_sw_signaling haven't been called before.

       It's recommended for seqno fences to call fence_signal when the operation is complete, it
       makes it possible to prevent issues from wraparound between time of issue and time of use
       by checking the return value of this function before calling hardware-specific wait
       instructions.

COPYRIGHT
Kernel Hackers Manual 4.8.                 January 2017                      FENCE_IS_SIGNALED(9)