From patchwork Wed Apr 2 01:39:12 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vinay Belgaumkar X-Patchwork-Id: 14035480 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 D69ABC36010 for ; Wed, 2 Apr 2025 01:39:38 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 6E80A10E697; Wed, 2 Apr 2025 01:39:38 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="V8BJMEQZ"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.19]) by gabe.freedesktop.org (Postfix) with ESMTPS id 66A0D10E697; Wed, 2 Apr 2025 01:39:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1743557978; x=1775093978; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=s/bpPbQTA9ESuCe2bMAhqSXWSMxcoZKpZvcyfcbtn5o=; b=V8BJMEQZvyGebT4r+83nzgDYrOXvFYB801bs08IVETtZRDrI+OdpRr+9 L1JqfwsQbJwCfCLKNeWFZSXLjU91WguA1FpHjlcBQ+QHxRrhoNVeAU3M7 +YN5QWIkZRd9i2ZJlurwz69wSV4z0emn5ELTCAZTgi/NrHGdRWAIeBgMw By1q8M+Ubg0k9r2m68HUyB6AdqPSJDWLHMVVNLEoqhIPh0ca6loO6gMNw 1hpfEtWBXqz/bmWm13fWu+scXA5zMkAVzuhPtnwB37G1xyS4usgewYn5I f5hAAMOgQ8VtvEybT9tJQqcxvs9mWWAvEizXNBnoVDanU5THrrlTZae+c Q==; X-CSE-ConnectionGUID: gRxoKYO0SZGFXrEmE73bgg== X-CSE-MsgGUID: bII9NEkXSEqx/CKSpx3eXw== X-IronPort-AV: E=McAfee;i="6700,10204,11391"; a="44796294" X-IronPort-AV: E=Sophos;i="6.14,294,1736841600"; d="scan'208";a="44796294" Received: from orviesa004.jf.intel.com ([10.64.159.144]) by orvoesa111.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 01 Apr 2025 18:39:38 -0700 X-CSE-ConnectionGUID: dsuNrwKTSnSQizXxcF2TaA== X-CSE-MsgGUID: g5O/od9jRD66LJg9QyL7Lw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.14,294,1736841600"; d="scan'208";a="131538507" Received: from vbelgaum-ubuntu.fm.intel.com ([10.1.39.141]) by orviesa004.jf.intel.com with ESMTP; 01 Apr 2025 18:39:38 -0700 From: Vinay Belgaumkar To: intel-gfx@lists.freedesktop.org, igt-dev@lists.freedesktop.org Cc: Vinay Belgaumkar , Lucas De Marchi , Rodrigo Vivi Subject: [PATCH i-g-t 2/2] tests/xe_pmu: Add frequency test Date: Tue, 1 Apr 2025 18:39:12 -0700 Message-Id: <20250402013912.2981094-3-vinay.belgaumkar@intel.com> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20250402013912.2981094-1-vinay.belgaumkar@intel.com> References: <20250402013912.2981094-1-vinay.belgaumkar@intel.com> MIME-Version: 1.0 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" Add a basic test that uses PMU to read GT actual and requested frequencies while running a workload. Cc: Lucas De Marchi Cc: Rodrigo Vivi Signed-off-by: Vinay Belgaumkar --- tests/intel/xe_pmu.c | 93 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 93 insertions(+) diff --git a/tests/intel/xe_pmu.c b/tests/intel/xe_pmu.c index 66edf24ad..43085b4d0 100644 --- a/tests/intel/xe_pmu.c +++ b/tests/intel/xe_pmu.c @@ -226,6 +226,95 @@ static void test_gt_c6_idle(int xe, unsigned int gt) close(pmu_fd); } +/** + * SUBTEST: gt-frequency + * Description: Validate we can collect accurate frequency PMU stats + * while running a workload. + */ +static void test_gt_frequency(int fd, struct drm_xe_engine_class_instance *eci) +{ + struct xe_cork *cork = NULL; + uint64_t end[2], start[2]; + unsigned long config_rq_freq, config_act_freq; + double min[2], max[2]; + uint32_t gt = eci->gt_id; + uint32_t orig_min = xe_gt_get_freq(fd, eci->gt_id, "min"); + uint32_t orig_max = xe_gt_get_freq(fd, eci->gt_id, "max"); + uint32_t vm; + int pmu_fd[2]; + + config_rq_freq = get_event_config(fd, gt, NULL, "gt-requested-frequency"); + pmu_fd[0] = open_group(fd, config_rq_freq, -1); + + config_act_freq = get_event_config(fd, gt, NULL, "gt-actual-frequency"); + pmu_fd[1] = open_group(fd, config_act_freq, pmu_fd[0]); + + vm = xe_vm_create(fd, 0, 0); + + cork = xe_cork_create_opts(fd, eci, vm, 1, 1); + xe_cork_sync_start(fd, cork); + + /* + * Set GPU to min frequency and read PMU counters. + */ + igt_assert(xe_gt_set_freq(fd, gt, "max", orig_min) > 0); + igt_assert(xe_gt_get_freq(fd, gt, "max") == orig_min); + + pmu_read_multi(pmu_fd[0], 2, start); + usleep(SLEEP_DURATION * USEC_PER_SEC); + pmu_read_multi(pmu_fd[0], 2, end); + + min[0] = (end[0] - start[0]); + min[1] = (end[1] - start[1]); + + /* + * Set GPU to max frequency and read PMU counters. + */ + igt_assert(xe_gt_set_freq(fd, gt, "max", orig_max) > 0); + igt_assert(xe_gt_get_freq(fd, gt, "max") == orig_max); + igt_assert(xe_gt_set_freq(fd, gt, "min", orig_max) > 0); + igt_assert(xe_gt_get_freq(fd, gt, "min") == orig_max); + + pmu_read_multi(pmu_fd[0], 2, start); + usleep(SLEEP_DURATION * USEC_PER_SEC); + pmu_read_multi(pmu_fd[0], 2, end); + + max[0] = (end[0] - start[0]); + max[1] = (end[1] - start[1]); + + if (!cork->ended) + xe_cork_sync_end(fd, cork); + + /* + * Restore min/max. + */ + igt_assert(xe_gt_set_freq(fd, gt, "min", orig_min) > 0); + igt_assert(xe_gt_get_freq(fd, gt, "min") == orig_min); + + igt_info("Minimum frequency: requested %.1f, actual %.1f\n", + min[0], min[1]); + igt_info("Maximum frequency: requested %.1f, actual %.1f\n", + max[0], max[1]); + + close(pmu_fd[0]); + close(pmu_fd[1]); + + if (cork) + xe_cork_destroy(fd, cork); + + xe_vm_destroy(fd, vm); + + close(pmu_fd[0]); + close(pmu_fd[1]); + + assert_within_epsilon(min[0], orig_min, tolerance); + /* + * On thermally throttled devices we cannot be sure maximum frequency + * can be reached so use larger tolerance downwards. + */ + assert_within_epsilon_up_down(max[0], orig_max, tolerance, 0.15f); +} + igt_main { int fd, gt; @@ -254,6 +343,10 @@ igt_main test_each_engine("engine-activity-load", fd, eci) engine_activity(fd, eci, TEST_LOAD); + igt_describe("Validate PMU GT freq measured is within the tolerance"); + test_each_engine("gt-frequency", fd, eci) + test_gt_frequency(fd, eci); + igt_fixture { close(fd); }