| Message ID | 20210106211844.15482-1-chris@chris-wilson.co.uk (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | drm/i915/selftests: Skip unstable timing measurements | expand |
diff --git a/drivers/gpu/drm/i915/selftests/intel_memory_region.c b/drivers/gpu/drm/i915/selftests/intel_memory_region.c index 75839db63bea..59c58a276677 100644 --- a/drivers/gpu/drm/i915/selftests/intel_memory_region.c +++ b/drivers/gpu/drm/i915/selftests/intel_memory_region.c @@ -852,6 +852,9 @@ static int _perf_memcpy(struct intel_memory_region *src_mr, } sort(t, ARRAY_SIZE(t), sizeof(*t), wrap_ktime_compare, NULL); + if (!t[0]) + continue; + pr_info("%s src(%s, %s) -> dst(%s, %s) %14s %4llu KiB copy: %5lld MiB/s\n", __func__, src_mr->name,
If any of the perf tests run into 0 time, not only are we liable to divide by zero, but the result would be highly questionable. Nevertheless, let's not have a div-by-zero error. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> --- drivers/gpu/drm/i915/selftests/intel_memory_region.c | 3 +++ 1 file changed, 3 insertions(+)