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 23718EA4FC2 for ; Mon, 23 Feb 2026 14:04:53 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id D4EC410E44D; Mon, 23 Feb 2026 14:04:52 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="O6N4x7xc"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.15]) by gabe.freedesktop.org (Postfix) with ESMTPS id 7009010E44A for ; Mon, 23 Feb 2026 14:04:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1771855491; x=1803391491; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=Zwh3d94pgziRyR7r7h7s+tMGI/g2qcuz4cCskH7xGSU=; b=O6N4x7xcphJjvUV+GRr6jsR7NhlJI4NTXf72m+9J/KjyOrnVItM5+1fY 8Aj5fCPIOMuvwYLkxrmNT8DtKwvjBVHWZZvCfxDySD2OGH+257cLmo2lY +GaR+QX4NPbhYskRHkdBlLuVs8c4yCE0vnJF5NlTSDqzM0uIKqYQkEeJh BAUzny0so+0nPynHq9PXMBcMawnZEVfTcTcylU2JOQ3Mvzv48ZWLZjXfY +xCTCa4HyAy7p1UewO6wXiOSiaF8scb/K8pRDSdU/kh3PbH7YnhYW3wY7 gaiJ8FZhyVeBfU4I1k/owP5/HxO00z8zPH5sPkCtGJ2E+bH3gfgoxdke1 g==; X-CSE-ConnectionGUID: wxUvpmWuRsGdp4NTYhnBTQ== X-CSE-MsgGUID: As1EXaxqT4C5kgg/O/H+LQ== X-IronPort-AV: E=McAfee;i="6800,10657,11709"; a="76460957" X-IronPort-AV: E=Sophos;i="6.21,306,1763452800"; d="scan'208";a="76460957" Received: from orviesa006.jf.intel.com ([10.64.159.146]) by orvoesa107.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 23 Feb 2026 06:04:51 -0800 X-CSE-ConnectionGUID: AqW0PA5LTp6cmfxHdyRotQ== X-CSE-MsgGUID: C3QNI//PSxyHbt9quU/WoA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.21,306,1763452800"; d="scan'208";a="214656485" Received: from ettammin-mobl3.ger.corp.intel.com (HELO mkuoppal-desk.intel.com) ([10.245.246.3]) by orviesa006-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 23 Feb 2026 06:04:47 -0800 From: Mika Kuoppala To: intel-xe@lists.freedesktop.org Cc: simona.vetter@ffwll.ch, matthew.brost@intel.com, christian.koenig@amd.com, thomas.hellstrom@linux.intel.com, joonas.lahtinen@linux.intel.com, christoph.manszewski@intel.com, rodrigo.vivi@intel.com, andrzej.hajda@intel.com, matthew.auld@intel.com, maciej.patelczyk@intel.com, gwan-gyeong.mun@intel.com, Sunil Khatri , Mika Kuoppala Subject: [PATCH 18/22] drm/xe: Add xe_client_debugfs and introduce debug_data file Date: Mon, 23 Feb 2026 16:03:13 +0200 Message-ID: <20260223140318.1822138-19-mika.kuoppala@linux.intel.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260223140318.1822138-1-mika.kuoppala@linux.intel.com> References: <20260223140318.1822138-1-mika.kuoppala@linux.intel.com> 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" From: Christoph Manszewski Create a debug_data file for each xe file/client which is supposed to list all mapped debug data and attempts to mimic '/proc/pid/maps'. Each line represents a single mapping and has the following format: - Cc: Sunil Khatri Signed-off-by: Christoph Manszewski Signed-off-by: Mika Kuoppala --- drivers/gpu/drm/xe/Makefile | 3 +- drivers/gpu/drm/xe/xe_client_debugfs.c | 118 +++++++++++++++++++++++++ drivers/gpu/drm/xe/xe_client_debugfs.h | 19 ++++ drivers/gpu/drm/xe/xe_device.c | 3 + 4 files changed, 142 insertions(+), 1 deletion(-) create mode 100644 drivers/gpu/drm/xe/xe_client_debugfs.c create mode 100644 drivers/gpu/drm/xe/xe_client_debugfs.h diff --git a/drivers/gpu/drm/xe/Makefile b/drivers/gpu/drm/xe/Makefile index f3e113f801d0..34db797ef8fc 100644 --- a/drivers/gpu/drm/xe/Makefile +++ b/drivers/gpu/drm/xe/Makefile @@ -343,7 +343,8 @@ ifeq ($(CONFIG_DRM_FBDEV_EMULATION),y) endif ifeq ($(CONFIG_DEBUG_FS),y) - xe-y += xe_debugfs.o \ + xe-y += xe_client_debugfs.o \ + xe_debugfs.o \ xe_gt_debugfs.o \ xe_gt_sriov_vf_debugfs.o \ xe_gt_stats.o \ diff --git a/drivers/gpu/drm/xe/xe_client_debugfs.c b/drivers/gpu/drm/xe/xe_client_debugfs.c new file mode 100644 index 000000000000..0b952038e698 --- /dev/null +++ b/drivers/gpu/drm/xe/xe_client_debugfs.c @@ -0,0 +1,118 @@ +// SPDX-License-Identifier: MIT +/* + * Copyright © 2025 Intel Corporation + */ + +#include "xe_client_debugfs.h" + +#include + +#include "xe_debug_data.h" +#include "xe_debug_data_types.h" +#include "xe_device_types.h" +#include "xe_vm_types.h" + +#define MAX_LINE_LEN (64 + PATH_MAX) + +static ssize_t debug_data_read(struct file *file, char __user *buf, size_t count, + loff_t *ppos) +{ + struct xe_debug_data *dd; + unsigned long vm_index; + const char *path; + char *kbuf; + struct xe_vm *vm; + + struct xe_file *xef = file->private_data; + ssize_t total = 0; + loff_t pos = 0; + + if (!xef || !buf) + return -EINVAL; + + kbuf = kmalloc(MAX_LINE_LEN, GFP_KERNEL); + if (!kbuf) + return -ENOMEM; + + mutex_lock(&xef->vm.lock); + + xa_for_each(&xef->vm.xa, vm_index, vm) { + mutex_lock(&vm->debug_data.lock); + list_for_each_entry(dd, &vm->debug_data.list, link) { + int len; + + path = dd->flags & DRM_XE_VM_BIND_DEBUG_DATA_FLAG_PSEUDO ? + xe_debug_data_pseudo_path_to_string(dd->pseudopath) : + dd->pathname; + + /* Format: - */ + len = snprintf(kbuf, MAX_LINE_LEN, "%lu 0x%llx-0x%llx 0x%llx 0x%x\t%s\n", + vm_index, + dd->addr, + dd->addr + dd->range, + dd->flags, + dd->offset, + path); + + if (pos + len <= *ppos) { + pos += len; + continue; + } + + if (pos < *ppos) { + const int skip = *ppos - pos; + + len -= skip; + memmove(kbuf, kbuf + skip, len); + pos = *ppos; + } + + if (total + len > count) + len = count - total; + + if (copy_to_user(buf + total, kbuf, len)) { + mutex_unlock(&vm->debug_data.lock); + mutex_unlock(&xef->vm.lock); + kfree(kbuf); + return -EFAULT; + } + + total += len; + pos += len; + + if (total >= count) { + mutex_unlock(&vm->debug_data.lock); + mutex_unlock(&xef->vm.lock); + kfree(kbuf); + *ppos = pos; + return total; + } + } + mutex_unlock(&vm->debug_data.lock); + } + + mutex_unlock(&xef->vm.lock); + kfree(kbuf); + *ppos = pos; + return total; +} + +static int debug_data_open(struct inode *inode, struct file *file) +{ + struct xe_file *xef = inode->i_private; + + file->private_data = xef; + return 0; +} + +static const struct file_operations maps_fops = { + .owner = THIS_MODULE, + .open = debug_data_open, + .read = debug_data_read, + .llseek = default_llseek, +}; + +void xe_client_debugfs_register(struct xe_file *xef) +{ + debugfs_create_file("debug_data", 0444, xef->drm->debugfs_client, xef, &maps_fops); +} diff --git a/drivers/gpu/drm/xe/xe_client_debugfs.h b/drivers/gpu/drm/xe/xe_client_debugfs.h new file mode 100644 index 000000000000..9eace15c0a49 --- /dev/null +++ b/drivers/gpu/drm/xe/xe_client_debugfs.h @@ -0,0 +1,19 @@ +/* SPDX-License-Identifier: MIT */ +/* + * Copyright © 2025 Intel Corporation + */ + +#ifndef _XE_CLIENT_DEBUGFS_H_ +#define _XE_CLIENT_DEBUGFS_H_ + +#include + +struct xe_file; + +#ifdef CONFIG_DEBUG_FS +void xe_client_debugfs_register(struct xe_file *xef); +#else +static inline void xe_client_debugfs_register(struct xe_file *xef) { } +#endif + +#endif // _XE_CLIENT_DEBUGFS_H_ diff --git a/drivers/gpu/drm/xe/xe_device.c b/drivers/gpu/drm/xe/xe_device.c index 39a70aaaa253..b4480e07e0f4 100644 --- a/drivers/gpu/drm/xe/xe_device.c +++ b/drivers/gpu/drm/xe/xe_device.c @@ -25,6 +25,7 @@ #include "regs/xe_regs.h" #include "xe_bo.h" #include "xe_bo_evict.h" +#include "xe_client_debugfs.h" #include "xe_debugfs.h" #include "xe_defaults.h" #include "xe_devcoredump.h" @@ -124,6 +125,8 @@ static int xe_file_open(struct drm_device *dev, struct drm_file *file) put_task_struct(task); } + xe_client_debugfs_register(xef); + return 0; } -- 2.43.0