Log throttle reasons on selftest failure which will be useful for debugging.
Signed-off-by: Raag Jadav <[email protected]> --- drivers/gpu/drm/i915/gt/selftest_rps.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/i915/gt/selftest_rps.c b/drivers/gpu/drm/i915/gt/selftest_rps.c index dcef8d498919..1e0e59bc69b6 100644 --- a/drivers/gpu/drm/i915/gt/selftest_rps.c +++ b/drivers/gpu/drm/i915/gt/selftest_rps.c @@ -478,8 +478,11 @@ int live_rps_control(void *arg) 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); + u32 throttle = intel_uncore_read(gt->uncore, + intel_gt_perf_limit_reasons_reg(gt)); + + pr_err("%s: GPU throttled to minimum frequency with reasons 0x%08x\n", + engine->name, throttle & GT0_PERF_LIMIT_REASONS_MASK); show_pstate_limits(rps); err = -ENODEV; break; -- 2.34.1
