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 BF31DC78853 for ; Fri, 20 Sep 2024 14:09:49 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 8CEA410E839; Fri, 20 Sep 2024 14:09:49 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="D9WhvDMV"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.8]) by gabe.freedesktop.org (Postfix) with ESMTPS id 1508C10E839 for ; Fri, 20 Sep 2024 14:09:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1726841388; x=1758377388; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=FI91Tg7aYuZzponRjOFC2yOGDym7ahCzMDOdHhjfaCk=; b=D9WhvDMVRNlYd6yuSUp/b2fxFbEuy+d3tddEfXPLB0OC/Pmr7lsbE+HG qLNeG7xr/EU0/Ix4M4AZ/Ag+HwvlXX2fD/hC2Yo7mMZDZNUIZbp5M5l8E FIhgcngUxENLhTkbWUPqtO68tkGT6L8csndm1LRa5hXCYjSXH5SNFCcny as6WZzn5BisKisB8LXaiRBU+qKl9rFf0gsC4hGeWgUYwv3yBsN29aL3Vs G3vjzej+8LbpesAYl69wPY6t+W9/BUBd5Y3KblurDMsPjBNieIKhx7ta2 eh4mAzc57yumy8b8qItqZxq+Rb72IuHpfKRxTTUTt2dMkTMSNIswQ9JzU g==; X-CSE-ConnectionGUID: l61aL74mRzyBeLnFZZUNdg== X-CSE-MsgGUID: FaBiF424SyG5A0D+2W2Mzw== X-IronPort-AV: E=McAfee;i="6700,10204,11200"; a="43368365" X-IronPort-AV: E=Sophos;i="6.10,244,1719903600"; d="scan'208";a="43368365" Received: from orviesa010.jf.intel.com ([10.64.159.150]) by fmvoesa102.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 20 Sep 2024 07:09:37 -0700 X-CSE-ConnectionGUID: biDfu39qQOiV/UEHxt+8Ww== X-CSE-MsgGUID: XZlhJ6k5Rwet+PAy5lRcig== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.10,244,1719903600"; d="scan'208";a="70182684" Received: from bnilawar-desk1.iind.intel.com ([10.145.169.59]) by orviesa010-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 20 Sep 2024 07:09:36 -0700 From: Badal Nilawar To: intel-xe@lists.freedesktop.org Cc: anshuman.gupta@intel.com, john.c.harrison@intel.com Subject: [CI 11/12] drm/xe/guc: Add a helper function for dumping GuC log to dmesg Date: Fri, 20 Sep 2024 19:59:21 +0530 Message-Id: <20240920142922.618649-12-badal.nilawar@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240920142922.618649-1-badal.nilawar@intel.com> References: <20240920142922.618649-1-badal.nilawar@intel.com> MIME-Version: 1.0 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" From: John Harrison Create a helper function that can be used to dump the GuC log to dmesg in a manner that is reliable for extraction and decode. The intention is that calls to this can be added by developers when debugging specific issues that require a GuC log but do not allow easy capture of the log - e.g. failures in selftests and failues that lead to kernel hangs. Also note that this is really a temporary stop-gap. The aim is to allow on demand creation and dumping of devcoredump captures (which includes the GuC log and much more). Currently this is not possible as much of the devcoredump code requires a 'struct xe_sched_job' and those are not available at many places that might want to do the dump. v2: Add kerneldoc - review feedback from Michal W. Signed-off-by: John Harrison Reviewed-by: Julia Filipchuk --- drivers/gpu/drm/xe/xe_guc_log.c | 18 ++++++++++++++++++ drivers/gpu/drm/xe/xe_guc_log.h | 1 + 2 files changed, 19 insertions(+) diff --git a/drivers/gpu/drm/xe/xe_guc_log.c b/drivers/gpu/drm/xe/xe_guc_log.c index 24564624e91e..d7be69f20af4 100644 --- a/drivers/gpu/drm/xe/xe_guc_log.c +++ b/drivers/gpu/drm/xe/xe_guc_log.c @@ -214,6 +214,24 @@ void xe_guc_log_snapshot_print(struct xe_guc_log_snapshot *snapshot, struct drm_ } } +/** + * xe_guc_log_print_dmesg - dump a copy of the GuC log to dmesg + * @log: GuC log structure + */ +void xe_guc_log_print_dmesg(struct xe_guc_log *log) +{ + struct xe_gt *gt = log_to_gt(log); + static int g_count; + struct drm_printer ip = xe_gt_info_printer(gt); + struct drm_printer lp = drm_line_printer(&ip, "Capture", ++g_count); + + drm_printf(&lp, "Dumping GuC log for %ps...\n", __builtin_return_address(0)); + + xe_guc_log_print(log, &lp); + + drm_printf(&lp, "Done.\n"); +} + /** * xe_guc_log_print - dump a copy of the GuC log to some useful location * @log: GuC log structure diff --git a/drivers/gpu/drm/xe/xe_guc_log.h b/drivers/gpu/drm/xe/xe_guc_log.h index 949d2c98343d..1fb2fae1f4e1 100644 --- a/drivers/gpu/drm/xe/xe_guc_log.h +++ b/drivers/gpu/drm/xe/xe_guc_log.h @@ -39,6 +39,7 @@ struct xe_device; int xe_guc_log_init(struct xe_guc_log *log); void xe_guc_log_print(struct xe_guc_log *log, struct drm_printer *p); +void xe_guc_log_print_dmesg(struct xe_guc_log *log); struct xe_guc_log_snapshot *xe_guc_log_snapshot_capture(struct xe_guc_log *log, bool atomic); void xe_guc_log_snapshot_print(struct xe_guc_log_snapshot *snapshot, struct drm_printer *p); void xe_guc_log_snapshot_free(struct xe_guc_log_snapshot *snapshot); -- 2.34.1