After hitting the SIGINT from execbuf, wait until the next timer signal before trying again. This aligns the start of the ioctl to the timer, hopefully maximising the amount of time we have for processing before the next signal -- trying to prevent the case where we are scheduled out in the middle of processing and so hit the timer signal too early. References: https://bugs.freedesktop.org/show_bug.cgi?id=106695 Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> --- lib/i915/gem_ring.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/lib/i915/gem_ring.c b/lib/i915/gem_ring.c index 7d64165eb..0c061000c 100644 --- a/lib/i915/gem_ring.c +++ b/lib/i915/gem_ring.c @@ -96,6 +96,8 @@ __gem_measure_ring_inflight(int fd, unsigned int engine, enum measure_ring_flags if (last == count) break; + /* sleep until the next timer interrupt (woken on signal) */ + pause(); last = count; } while (1); -- 2.17.0 _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
