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 7A81BCCD193 for ; Wed, 15 Oct 2025 09:41:25 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 35BA510E76F; Wed, 15 Oct 2025 09:41:25 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="K3H/QJno"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.19]) by gabe.freedesktop.org (Postfix) with ESMTPS id 2AA1F10E769 for ; Wed, 15 Oct 2025 09:41:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1760521284; x=1792057284; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=feNPRr4zpJ4vh9Q/i2wz0N5GNR9inzIME1by8BOd5x8=; b=K3H/QJnoVhJ/WLlr8v63/AHSpYdJpvvoLQ3NUanyJLbltR2ShcP8Tt+M RtwqOxCfQlpMNFm42t3RTsK56TfH8wQgKoPOYwmu7mvpX2gpdEdhPdMd2 2K3Sx+WLg5HtSbdQihC+mge+fDd0//kOwv2JMKUS1OgJyMl4qQfwy4eAz n6CCOWRe+N0XXlVAKBYb71wCDMkJVNO07z85axPxLzQmfw1uQmslnXxg3 J0+zWB2PEN3f1wEbAJVfClUhxntG5y7IXhR0CEJpyCIEMKQ/IotjMPkN0 DMSHBGxO9OQSZTMJZKo/tdOsgVdPaLqGp4M/4oyov+qI9J7rursPX+35d A==; X-CSE-ConnectionGUID: 1FWFDceuQeqn5wfy9n6x1Q== X-CSE-MsgGUID: 2B830ofFSrCNq/nsMteR+w== X-IronPort-AV: E=McAfee;i="6800,10657,11582"; a="62588520" X-IronPort-AV: E=Sophos;i="6.19,230,1754982000"; d="scan'208";a="62588520" Received: from orviesa001.jf.intel.com ([10.64.159.141]) by orvoesa111.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 15 Oct 2025 02:41:24 -0700 X-CSE-ConnectionGUID: wSH810VeRIK/RJl1u41bdw== X-CSE-MsgGUID: xeTQQNlVS1qKoNYW/hImqA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.19,230,1754982000"; d="scan'208";a="219272946" Received: from bnilawar-desk2.iind.intel.com ([10.190.239.41]) by smtpauth.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 15 Oct 2025 02:41:22 -0700 From: Badal Nilawar To: intel-xe@lists.freedesktop.org Cc: rodrigo.vivi@intel.com, vinay.belgaumkar@intel.com, sk.anirban@intel.com Subject: [PATCH] drm/xe: Prevent runtime PM wake while reading rp0 frequency Date: Wed, 15 Oct 2025 15:16:11 +0530 Message-Id: <20251015094611.1468939-1-badal.nilawar@intel.com> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: intel-xe@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel Xe graphics driver List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-xe-bounces@lists.freedesktop.org Sender: "Intel-xe" The rp0 frequency is a fused value that is read once during probe and then cached, so there’s no need to trigger a runtime wake when accessing rp0. Signed-off-by: Badal Nilawar --- drivers/gpu/drm/xe/xe_gt_freq.c | 7 +------ 1 file changed, 1 insertion(+), 6 deletions(-) diff --git a/drivers/gpu/drm/xe/xe_gt_freq.c b/drivers/gpu/drm/xe/xe_gt_freq.c index 4ff1b6b58d6b..701349251bbc 100644 --- a/drivers/gpu/drm/xe/xe_gt_freq.c +++ b/drivers/gpu/drm/xe/xe_gt_freq.c @@ -99,13 +99,8 @@ static ssize_t rp0_freq_show(struct kobject *kobj, { struct device *dev = kobj_to_dev(kobj); struct xe_guc_pc *pc = dev_to_pc(dev); - u32 freq; - xe_pm_runtime_get(dev_to_xe(dev)); - freq = xe_guc_pc_get_rp0_freq(pc); - xe_pm_runtime_put(dev_to_xe(dev)); - - return sysfs_emit(buf, "%d\n", freq); + return sysfs_emit(buf, "%d\n", xe_guc_pc_get_rp0_freq(pc)); } static struct kobj_attribute attr_rp0_freq = __ATTR_RO(rp0_freq); -- 2.34.1