@@ -477,12 +477,13 @@ int live_rps_control(void *arg)
limit, intel_gpu_freq(rps, limit),
min, max, ktime_to_ns(min_dt), ktime_to_ns(max_dt));
- if (limit == rps->min_freq) {
- pr_err("%s: GPU throttled to minimum!\n",
- engine->name);
+ if (limit != rps->max_freq) {
+ u32 throttle = intel_uncore_read(gt->uncore,
+ intel_gt_perf_limit_reasons_reg(gt));
+
+ pr_warn("%s: GPU throttled with reasons 0x%08x\n",
+ engine->name, throttle & GT0_PERF_LIMIT_REASONS_MASK);
show_pstate_limits(rps);
- err = -ENODEV;
- break;
}
if (igt_flush_test(gt->i915)) {
Current live_rps_control() implementation errors out on throttling. This was done with the assumption that throttling to minimum frequency is a catastrophic failure, which is incorrect. Throttling can happen due to variety of reasons and often times out of our control. Also, the resulting frequency can be at any given point below the maximum allowed. Change throttle criteria to reflect this logic and drop the error, as it doesn't necessarily mean selftest failure. Signed-off-by: Raag Jadav <raag.jadav@intel.com> --- drivers/gpu/drm/i915/gt/selftest_rps.c | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-)