Sometimes, we do not want to allow control to escape from the spinner,
e.g. for when we want to hang the GPU inside the batch.
(Split out from the preempt-timeout test case.)
Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Reviewed-by: Antonio Argenziano <antonio.argenziano@xxxxxxxxx>
---
lib/igt_dummyload.c | 5 ++---
lib/igt_dummyload.h | 7 ++++---
2 files changed, 6 insertions(+), 6 deletions(-)
diff --git a/lib/igt_dummyload.c b/lib/igt_dummyload.c
index 7beb66244..2027a4b7f 100644
--- a/lib/igt_dummyload.c
+++ b/lib/igt_dummyload.c
@@ -186,7 +186,8 @@ emit_recursive_batch(igt_spin_t *spin,
spin->handle = obj[BATCH].handle;
/* Allow ourselves to be preempted */
- *batch++ = MI_ARB_CHK;
+ if (!(opts->flags & IGT_SPIN_NO_PREEMPTION))
+ *batch++ = MI_ARB_CHK;
/* Pad with a few nops so that we do not completely hog the system.
*
@@ -379,8 +380,6 @@ void igt_spin_batch_end(igt_spin_t *spin)
if (!spin)
return;
- igt_assert(*spin->batch == MI_ARB_CHK ||
- *spin->batch == MI_BATCH_BUFFER_END);
*spin->batch = MI_BATCH_BUFFER_END;
__sync_synchronize();
}
diff --git a/lib/igt_dummyload.h b/lib/igt_dummyload.h
index e80a12451..38bc7682e 100644
--- a/lib/igt_dummyload.h
+++ b/lib/igt_dummyload.h
@@ -50,9 +50,10 @@ struct igt_spin_factory {
unsigned int flags;
};
-#define IGT_SPIN_FENCE_OUT (1 << 0)
-#define IGT_SPIN_POLL_RUN (1 << 1)
-#define IGT_SPIN_FAST (1 << 2)
+#define IGT_SPIN_FENCE_OUT (1 << 0)
+#define IGT_SPIN_POLL_RUN (1 << 1)
+#define IGT_SPIN_FAST (1 << 2)
+#define IGT_SPIN_NO_PREEMPTION (1 << 3)
igt_spin_t *
__igt_spin_batch_factory(int fd, const struct igt_spin_factory *opts);
--
2.18.0
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