Limit the maximum number of interrupts in order to avoid overburdening
older CPUs and GPUs.
Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
---
tests/perf_pmu.c | 11 +++++++----
1 file changed, 7 insertions(+), 4 deletions(-)
diff --git a/tests/perf_pmu.c b/tests/perf_pmu.c
index 33fb4d653..e1bbf2410 100644
--- a/tests/perf_pmu.c
+++ b/tests/perf_pmu.c
@@ -1274,11 +1274,15 @@ static void cpu_hotplug(int gem_fd)
assert_within_epsilon(val, ts[1] - ts[0], tolerance);
}
+static int target_num_interrupts(int i915)
+{
+ return min(gem_measure_ring_inflight(i915, I915_EXEC_DEFAULT, 0), 30);
+}
+
static void
test_interrupts(int gem_fd)
{
- const int target =
- gem_measure_ring_inflight(gem_fd, I915_EXEC_DEFAULT, 0);
+ const int target = target_num_interrupts(gem_fd);
const unsigned int test_duration_ms = 1000;
igt_spin_t *spin[target];
struct pollfd pfd;
@@ -1342,8 +1346,7 @@ test_interrupts(int gem_fd)
static void
test_interrupts_sync(int gem_fd)
{
- const int target =
- gem_measure_ring_inflight(gem_fd, I915_EXEC_DEFAULT, 0);
+ const int target = target_num_interrupts(gem_fd);
const unsigned int test_duration_ms = 1000;
igt_spin_t *spin[target];
struct pollfd pfd;
--
2.24.0
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