From: Vinay Belgaumkar Date: Tue, 27 Jun 2023 19:13:36 +0000 (-0700) Subject: drm/i915/guc: Dump perf_limit_reasons for debug X-Git-Tag: v6.6.7~1918^2~16^2~30 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=a8c94b3964c59408f531ce819f13f0209695db7f;p=platform%2Fkernel%2Flinux-starfive.git drm/i915/guc: Dump perf_limit_reasons for debug GuC load takes longer sometimes due to GT frequency not ramping up. Add perf_limit_reasons to the existing warn print to see if frequency is being throttled. v2: Review comments (Ashutosh) Signed-off-by: Vinay Belgaumkar Reviewed-by: Ashutosh Dixit Signed-off-by: Daniele Ceraolo Spurio Link: https://patchwork.freedesktop.org/patch/msgid/20230627191336.319381-1-vinay.belgaumkar@intel.com --- diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_fw.c b/drivers/gpu/drm/i915/gt/uc/intel_guc_fw.c index 364d0d5..0f79cb6 100644 --- a/drivers/gpu/drm/i915/gt/uc/intel_guc_fw.c +++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_fw.c @@ -251,9 +251,11 @@ static int guc_wait_ucode(struct intel_guc *guc) if (ret == 0) ret = -ENXIO; } else if (delta_ms > 200) { - guc_warn(guc, "excessive init time: %lldms! [freq = %dMHz, before = %dMHz, status = 0x%08X, count = %d, ret = %d]\n", - delta_ms, intel_rps_read_actual_frequency(&uncore->gt->rps), - before_freq, status, count, ret); + guc_warn(guc, "excessive init time: %lldms! [status = 0x%08X, count = %d, ret = %d]\n", + delta_ms, status, count, ret); + guc_warn(guc, "excessive init time: [freq = %dMHz, before = %dMHz, perf_limit_reasons = 0x%08X]\n", + intel_rps_read_actual_frequency(&uncore->gt->rps), before_freq, + intel_uncore_read(uncore, intel_gt_perf_limit_reasons_reg(gt))); } else { guc_dbg(guc, "init took %lldms, freq = %dMHz, before = %dMHz, status = 0x%08X, count = %d, ret = %d\n", delta_ms, intel_rps_read_actual_frequency(&uncore->gt->rps),