Chris Wilson 8520037e54 lib: Measure the cost of calling timer_settimer() for sigiter
We wish to delay the first signal from the igt_sigiter_ioctl
sufficiently to skip over the timer_settime() and into the drmIoctl
kernel context before firing. If we fire too early, we will think that
the ioctl doesn't respond to signals and ignore it in future. If we fire
too late, we won't probe the ioctl for signal handling at all. Let's try
measuring the timer_settime() call time as a first approximation.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2016-03-21 16:26:04 +00:00
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