lib: Add a GPU error detector

If we listen to the uevents from the kernel, we can detect when the GPU
hangs. This requires us to fork a helper process to do so and send a
signal back to the parent.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>

1 files changed, 3 insertions, 0 deletions

diff --git a/lib/igt_aux.h b/lib/igt_aux.h
index 101fad12..cdaed297 100644
--- a/lib/igt_aux.h
+++ b/lib/igt_aux.h
@@ -40,6 +40,9 @@ extern int num_trash_bos;
 void igt_fork_signal_helper(void);
 void igt_stop_signal_helper(void);
 
+void igt_fork_hang_detector(int fd);
+void igt_stop_hang_detector(void);
+
 struct igt_sigiter {
 	unsigned pass;
 };