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 01250CAC5AE for ; Fri, 26 Sep 2025 11:20:14 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id B3CBE10EA1F; Fri, 26 Sep 2025 11:20:14 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="nmXbjHGl"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.13]) by gabe.freedesktop.org (Postfix) with ESMTPS id 3A89F10EA29 for ; Fri, 26 Sep 2025 11:20:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1758885611; x=1790421611; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=qm9GrYR33mfQMjA2qOzBsp/ol43g4xNV9KOg5JeMybk=; b=nmXbjHGlrR17txCjaUtmHry+yN4omT24pd14jwmXlUzfI+ihjm6voJuY xlnUXEeaPZmDDYlDcD0C3nM4R3oGu4Hm/kMlAC6nCGips0gn0QQiZ1Z1o jwWgnN4gL11Cv0bCi3i/1nydL9nRoOKvjHHX2G6BlynEmONL0+Uk9b2EB SZ7uKi38QpL+dsSNubfbWmyXyhUA4sxMn3id0Voq8RckGTXY9d2V4fSH6 Nt3JXfgNqxOp1wQCYDIjRl338acQmOMVl3VHs3QwMDV3zoEaOc5Qg0BqO UGPZYTy/rK0pG3qnAZrYfAjB3bA+gjBDwo4bFcFWvG1CY96GByU7/Fg4r g==; X-CSE-ConnectionGUID: 3LkCD640QySHC9+cTwsygw== X-CSE-MsgGUID: 3ksURDosQvm74HnPGnbEfg== X-IronPort-AV: E=McAfee;i="6800,10657,11564"; a="72314416" X-IronPort-AV: E=Sophos;i="6.18,295,1751266800"; d="scan'208";a="72314416" Received: from fmviesa003.fm.intel.com ([10.60.135.143]) by orvoesa105.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 26 Sep 2025 04:20:11 -0700 X-CSE-ConnectionGUID: 4peHn9HtRJ6TYbMivVZ+tg== X-CSE-MsgGUID: nOHQo1hJSqabu5/RtVjxWw== X-ExtLoop1: 1 Received: from intel-s2600wft.iind.intel.com (HELO biaas-d105.iind.intel.com) ([10.223.26.161]) by fmviesa003.fm.intel.com with ESMTP; 26 Sep 2025 04:20:08 -0700 From: Aakash Deep Sarkar To: intel-xe@lists.freedesktop.org Cc: jeevaka.badrappan@intel.com, rodrigo.vivi@intel.com, matthew.brost@intel.com, carlos.santa@intel.com, matthew.auld@intel.com, Aakash Deep Sarkar Subject: [PATCH v4 6/9] drm/xe: Implement xe_work_period_worker Date: Fri, 26 Sep 2025 10:45:17 +0000 Message-ID: <20250926104521.1815428-7-aakash.deep.sarkar@intel.com> X-Mailer: git-send-email 2.49.0 In-Reply-To: <20250926104521.1815428-1-aakash.deep.sarkar@intel.com> References: <20250926104521.1815428-1-aakash.deep.sarkar@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" The work of collecting the GPU run time for a given xe_user and emitting its event, is done by the xe_work_period_worker kworker. At the time of creation of a new xe_user, we simultaneously start a delayed kworker thread. The delay of execution is set to be 500 ms. After the completion of the work, the kworker schedules itself for the next execution. This is done as long as the reference to the xe_user pointer is valid. During each execution cycle the xe_work_period_worker iterates over all the xe files in the xe_user::filelist and accumulate their corresponding GPU runtime into the xe_user::active_duration_ns; while also updating each of the xe_file::active_duration_ns. The total runtime for this uid in the current sampling period is the delta between the previous xe_user::active_duration_ns and the current xe_user::active_duration_ns. We also record the current timestamp at the end of each invocation to xe_work_period_worker function in the xe_user::last_timestamp_ns. The sampling period for this uid is the delta between the previous timestamp and the current timestamp. Signed-off-by: Aakash Deep Sarkar --- drivers/gpu/drm/xe/xe_device.c | 13 ++-- drivers/gpu/drm/xe/xe_pm.c | 5 ++ drivers/gpu/drm/xe/xe_user.c | 127 +++++++++++++++++++++++++++++++-- drivers/gpu/drm/xe/xe_user.h | 21 ++++-- 4 files changed, 149 insertions(+), 17 deletions(-) diff --git a/drivers/gpu/drm/xe/xe_device.c b/drivers/gpu/drm/xe/xe_device.c index 837c23784388..5569a27abb09 100644 --- a/drivers/gpu/drm/xe/xe_device.c +++ b/drivers/gpu/drm/xe/xe_device.c @@ -81,11 +81,9 @@ static int xe_file_open(struct drm_device *dev, struct drm_file *file) { struct xe_device *xe = to_xe_device(dev); struct xe_drm_client *client; - struct xe_user *user; struct xe_file *xef; int ret = -ENOMEM; int uid = -EINVAL; - u32 idx; struct task_struct *task = NULL; const struct cred *cred = NULL; @@ -142,11 +140,12 @@ static void xe_file_destroy(struct kref *ref) xe_drm_client_put(xef->client); kfree(xef->process_name); - mutex_lock(&xef->user->filelist_lock); - list_del(&xef->user_link); - mutex_unlock(&xef->user->filelist_lock); - - xe_user_put(xef->user); + if (xef->user) { + mutex_lock(&xef->user->lock); + list_del(&xef->user_link); + xe_user_put(xef->user); + mutex_unlock(&xef->user->lock); + } kfree(xef); } diff --git a/drivers/gpu/drm/xe/xe_pm.c b/drivers/gpu/drm/xe/xe_pm.c index b7e3094f8acf..c7add2616189 100644 --- a/drivers/gpu/drm/xe/xe_pm.c +++ b/drivers/gpu/drm/xe/xe_pm.c @@ -26,6 +26,7 @@ #include "xe_pxp.h" #include "xe_sriov_vf_ccs.h" #include "xe_trace.h" +#include "xe_user.h" #include "xe_vm.h" #include "xe_wa.h" @@ -598,6 +599,8 @@ int xe_pm_runtime_suspend(struct xe_device *xe) xe_i2c_pm_suspend(xe); + xe_user_cancel_workers(xe); + xe_rpm_lockmap_release(xe); xe_pm_write_callback_task(xe, NULL); return 0; @@ -650,6 +653,8 @@ int xe_pm_runtime_resume(struct xe_device *xe) xe_i2c_pm_resume(xe, xe->d3cold.allowed); + xe_user_resume_workers(xe); + xe_irq_resume(xe); for_each_gt(gt, xe, id) diff --git a/drivers/gpu/drm/xe/xe_user.c b/drivers/gpu/drm/xe/xe_user.c index 846c6451140b..19b28bcada0f 100644 --- a/drivers/gpu/drm/xe/xe_user.c +++ b/drivers/gpu/drm/xe/xe_user.c @@ -6,17 +6,95 @@ #include #include +#include "xe_assert.h" +#include "xe_device_types.h" +#include "xe_exec_queue.h" +#include "xe_pm.h" #include "xe_user.h" +#define CREATE_TRACE_POINTS +#include + +static inline void schedule_next_work(struct xe_device *xe, unsigned int id) +{ + struct xe_user *user; + + mutex_lock(&xe->work_period.lock); + user = xa_load(&xe->work_period.users, id); + if (user && xe_user_get_unless_zero(user)) + schedule_delayed_work(&user->delay_work, + msecs_to_jiffies(XE_WORK_PERIOD_INTERVAL)); + mutex_unlock(&xe->work_period.lock); +} /** * worker thread to emit gpu work period event for this xe user * @work: work instance for this xe user * * Return: void */ -static inline void work_period_worker(struct work_struct *work) +static void xe_work_period_worker(struct work_struct *work) { - //TODO: Implement this worker + struct xe_user *user = container_of(work, struct xe_user, delay_work.work); + struct xe_device *xe = user->xe; + struct xe_file *xef; + struct xe_exec_queue *q; + + /* + * The GPU work period event requires the following parameters + * + * gpuid: GPU index in case the platform has more than one GPU + * uid: user id of the app + * start_time: start time for the sampling period in nanosecs + * end_time: end time for the sampling period in nanosecs + * active_duration: Total runtime in nanosecs for this uid in + * the current sampling period. + */ + u32 gpuid = 0, uid = user->uid, id = user->id; + u64 start_time, end_time, active_duration; + u64 last_active_duration, last_timestamp; + unsigned long i; + + mutex_lock(&user->lock); + + // Save the last recorded active duration and timestamp + last_active_duration = user->active_duration_ns; + last_timestamp = user->last_timestamp_ns; + + if (xe_pm_runtime_get_if_active(xe)) { + + list_for_each_entry(xef, &user->filelist, user_link) { + + wait_var_event(&xef->exec_queue.pending_removal, + !atomic_read(&xef->exec_queue.pending_removal)); + + /* Accumulate all the exec queues from this file */ + mutex_lock(&xef->exec_queue.lock); + xa_for_each(&xef->exec_queue.xa, i, q) { + xe_exec_queue_get(q); + mutex_unlock(&xef->exec_queue.lock); + + xe_exec_queue_update_run_ticks(q); + + mutex_lock(&xef->exec_queue.lock); + xe_exec_queue_put(q); + } + mutex_unlock(&xef->exec_queue.lock); + user->active_duration_ns += xef->active_duration_ns; + } + + xe_pm_runtime_put(xe); + + start_time = last_timestamp + 1; + end_time = ktime_get_raw_ns(); + active_duration = user->active_duration_ns - last_active_duration; + trace_gpu_work_period(gpuid, uid, start_time, end_time, active_duration); + user->last_timestamp_ns = end_time; + xe_user_put(user); + } + + mutex_unlock(&user->lock); + + schedule_next_work(xe, id); } /** @@ -38,9 +116,9 @@ static struct xe_user *xe_user_alloc(void) return NULL; kref_init(&user->refcount); - mutex_init(&user->filelist_lock); + mutex_init(&user->lock); INIT_LIST_HEAD(&user->filelist); - INIT_WORK(&user->work, work_period_worker); + INIT_DELAYED_WORK(&user->delay_work, xe_work_period_worker); return user; } @@ -120,12 +198,49 @@ int xe_user_init(struct xe_device *xe, struct xe_file *xef, unsigned int uid) user->id = idx; drm_dev_get(&xe->drm); + + xe_user_get(user); + if (!schedule_delayed_work(&user->delay_work, + msecs_to_jiffies(XE_WORK_PERIOD_INTERVAL))) + xe_user_put(user); } - mutex_lock(&user->filelist_lock); + mutex_lock(&user->lock); list_add(&xef->user_link, &user->filelist); - mutex_unlock(&user->filelist_lock); + mutex_unlock(&user->lock); xef->user = user; return 0; } + +void xe_user_cancel_workers(struct xe_device *xe) +{ + struct xe_user *user = NULL; + unsigned long i = 0; + + mutex_lock(&xe->work_period.lock); + xa_for_each(&xe->work_period.users, i, user) { + if (user && xe_user_get_unless_zero(user)) { + cancel_delayed_work_sync(&user->delay_work); + xe_user_put(user); + } + } + mutex_unlock(&xe->work_period.lock); +} + +void xe_user_resume_workers(struct xe_device *xe) +{ + struct xe_user *user = NULL; + unsigned long i = 0; + + mutex_lock(&xe->work_period.lock); + xa_for_each(&xe->work_period.users, i, user) { + if (user && xe_user_get_unless_zero(user)) { + if (!schedule_delayed_work(&user->delay_work, + msecs_to_jiffies(XE_WORK_PERIOD_INTERVAL))) + xe_user_put(user); + } + } + mutex_unlock(&xe->work_period.lock); +} + diff --git a/drivers/gpu/drm/xe/xe_user.h b/drivers/gpu/drm/xe/xe_user.h index b13130cc9492..ded816be7334 100644 --- a/drivers/gpu/drm/xe/xe_user.h +++ b/drivers/gpu/drm/xe/xe_user.h @@ -11,9 +11,11 @@ #include #include -#include "xe_device.h" +#include "xe_device_types.h" +#define XE_WORK_PERIOD_INTERVAL 500 + /** * This is a per process/user id structure for a xe device * client. It is allocated when a new process/app opens the @@ -32,9 +34,9 @@ struct xe_user { struct xe_device *xe; /** - * @filelist_lock: lock protecting the filelist + * @filelist_lock: lock protecting this structure */ - struct mutex filelist_lock; + struct mutex lock; /** * @filelist: list of xe files belonging to this xe user @@ -45,7 +47,7 @@ struct xe_user { * @work: work to emit the gpu work period event for this * xe user */ - struct work_struct work; + struct delayed_work delay_work; /** * @id: index of this user into the xe device users array @@ -72,6 +74,17 @@ struct xe_user { int xe_user_init(struct xe_device *xe, struct xe_file *xef, unsigned int uid); +void xe_user_cancel_workers(struct xe_device *xe); + +void xe_user_resume_workers(struct xe_device *xe); + +static inline struct xe_user * +xe_user_get_unless_zero(struct xe_user *user) +{ + if (kref_get_unless_zero(&user->refcount)) + return user; + return NULL; +} static inline struct xe_user * xe_user_get(struct xe_user *user) -- 2.49.0