From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id B22B6D3B7ED for ; Tue, 9 Dec 2025 06:03:33 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 3176410E060; Tue, 9 Dec 2025 06:03:33 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="EmlUizcE"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.17]) by gabe.freedesktop.org (Postfix) with ESMTPS id 61FEC10E060 for ; Tue, 9 Dec 2025 06:03:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1765260213; x=1796796213; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=ZDyaij6WkNJksVBoSAGNBxleVpdkXc0vv2YHMmTXfHc=; b=EmlUizcEVkno7GqzwZldFAN0bjbf6C4BnsY4geEKHe3tgxUPVkpsS7Tt r7NSZu8qkeisP7Ky25cFulAjFurw1PBI7nWxNAdF61pcfvHzsveHx9tOT djGWZNMTTHbQMvSy3Fb8TJ/Kb/Xk4a3OsLRuOjLSHq5VLXnooZ195YJOk gByf/fLJYoQ91hxHEWst0J0XrRqW58tPIISJmOc2tXfpbPadiADvLFG5W hPoY4GpkSvfVDUPP/bnRHxgbuA0u5SWmGvKCV5rbxfEkLFqelRBJaRzRA 6oD2rU8w7AmE+vNqNz6WExxvMHHaNE3uQ/sUSf18RNj+hfX4/HQNeLnFT g==; X-CSE-ConnectionGUID: sJiWBwsLQliyG//rkIjhHQ== X-CSE-MsgGUID: TDGuQDF7TemI6m+vZ1LNmQ== X-IronPort-AV: E=McAfee;i="6800,10657,11636"; a="67173700" X-IronPort-AV: E=Sophos;i="6.20,260,1758610800"; d="scan'208";a="67173700" Received: from orviesa002.jf.intel.com ([10.64.159.142]) by orvoesa109.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 08 Dec 2025 22:03:32 -0800 X-CSE-ConnectionGUID: e4u058QDSnSY3IBUR+nHBA== X-CSE-MsgGUID: fIOWoGRvR2KEmeTsVYUzVA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.20,260,1758610800"; d="scan'208";a="226807793" Received: from anirban-z690i-a-ultra-plus.iind.intel.com ([10.190.216.83]) by orviesa002-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 08 Dec 2025 22:03:29 -0800 From: Sk Anirban To: intel-gfx@lists.freedesktop.org Cc: anshuman.gupta@intel.com, badal.nilawar@intel.com, riana.tauro@intel.com, karthik.poosa@intel.com, raag.jadav@intel.com, soham.purkait@intel.com, mallesh.koujalagi@intel.com, Sk Anirban Subject: [PATCH] drm/i915/selftest: Add throttle reason diagnostics to RPS selftests Date: Tue, 9 Dec 2025 11:26:17 +0530 Message-ID: <20251209055616.1095495-2-sk.anirban@intel.com> X-Mailer: git-send-email 2.43.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" Report GPU throttle reasons when RPS tests fail to reach expected frequencies or power levels. Signed-off-by: Sk Anirban --- drivers/gpu/drm/i915/gt/selftest_rps.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/drivers/gpu/drm/i915/gt/selftest_rps.c b/drivers/gpu/drm/i915/gt/selftest_rps.c index 73bc91c6ea07..01c671e00e61 100644 --- a/drivers/gpu/drm/i915/gt/selftest_rps.c +++ b/drivers/gpu/drm/i915/gt/selftest_rps.c @@ -1138,6 +1138,7 @@ int live_rps_power(void *arg) struct intel_engine_cs *engine; enum intel_engine_id id; struct igt_spinner spin; + u32 throttle; int err = 0; /* @@ -1216,6 +1217,13 @@ int live_rps_power(void *arg) if (11 * min.power > 10 * max.power) { pr_err("%s: did not conserve power when setting lower frequency!\n", engine->name); + + 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); + err = -EINVAL; break; } @@ -1241,6 +1249,7 @@ int live_rps_dynamic(void *arg) struct intel_engine_cs *engine; enum intel_engine_id id; struct igt_spinner spin; + u32 throttle; int err = 0; /* @@ -1299,6 +1308,14 @@ int live_rps_dynamic(void *arg) min.freq = wait_for_freq(rps, rps->min_freq, 2000); min.dt = ktime_sub(ktime_get(), min.dt); + if (max.freq != rps->max_freq) { + 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); + } + pr_info("%s: dynamically reclocked to %u:%uMHz while busy in %lluns, and %u:%uMHz while idle in %lluns\n", engine->name, max.freq, intel_gpu_freq(rps, max.freq), -- 2.43.0