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 3000ECF648C for ; Wed, 19 Nov 2025 22:41:21 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 6D10C10E6A9; Wed, 19 Nov 2025 22:41:17 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="KsKcbjAl"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.13]) by gabe.freedesktop.org (Postfix) with ESMTPS id 2A2DD10E271; Wed, 19 Nov 2025 22:41:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1763592074; x=1795128074; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=6hQeEIVvJcwcbTxa6weR3U7IequVN5HxxQadPLCJ+nY=; b=KsKcbjAl0KNeTj0QTRyIn8fAqSCrdjcN9AR1axmTfCmeI1gjO5ylsQEH 5CE8DWy6AVYK9+1oAok9eOdS5RnSXHpiPfwgOA3euJoZUZsxyQjhd0ST/ QG7/2Py02Zz/Nuo98SWAF22C2kNebwrmicSHQRyNRo7/jpFJGN9E8Tvjq UIe2/acj+7LULCqBgCq5KoFJJ+mtOidbVDQvux9xgZ42/QUJTnrSqXqLW RryvpTOdhBKYbcfCst1uggRMcLPgAjuCtW64BI0pRQ3nlG9x2uljC1BHD c1hmEfqw0FSqNHKcxKjZ6EOusi2z83Ip1d6cHbYaDkQTbx1cXy44dPMcT w==; X-CSE-ConnectionGUID: h32pOxbXR6KYFtvmoF8P0w== X-CSE-MsgGUID: zzy4yaFRRT+oMZR8ofabcQ== X-IronPort-AV: E=McAfee;i="6800,10657,11618"; a="76755382" X-IronPort-AV: E=Sophos;i="6.19,316,1754982000"; d="scan'208";a="76755382" Received: from orviesa001.jf.intel.com ([10.64.159.141]) by orvoesa105.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 19 Nov 2025 14:41:12 -0800 X-CSE-ConnectionGUID: 31w41FQ7Rs+r7KcfztL2yA== X-CSE-MsgGUID: 8KYs1ivNT5qcnl8R3pU2rg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.19,316,1754982000"; d="scan'208";a="228504134" Received: from lstrano-desk.jf.intel.com ([10.54.39.91]) by smtpauth.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 19 Nov 2025 14:41:11 -0800 From: Matthew Brost To: intel-xe@lists.freedesktop.org, dri-devel@lists.freedesktop.org Cc: niranjana.vishwanathapura@intel.com, umesh.nerlige.ramappa@intel.com, christian.koenig@amd.com, pstanner@redhat.com, dakr@kernel.org Subject: [PATCH v4 2/8] drm/sched: Add pending job list iterator Date: Wed, 19 Nov 2025 14:41:00 -0800 Message-Id: <20251119224106.3733883-3-matthew.brost@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20251119224106.3733883-1-matthew.brost@intel.com> References: <20251119224106.3733883-1-matthew.brost@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" Stop open coding pending job list in drivers. Add pending job list iterator which safely walks DRM scheduler list asserting DRM scheduler is stopped. v2: - Fix checkpatch (CI) v3: - Drop locked version (Christian) v4: - Reorder patch (Niranjana) Signed-off-by: Matthew Brost --- include/drm/gpu_scheduler.h | 50 +++++++++++++++++++++++++++++++++++++ 1 file changed, 50 insertions(+) diff --git a/include/drm/gpu_scheduler.h b/include/drm/gpu_scheduler.h index 385bf34e76fe..9d228513d06c 100644 --- a/include/drm/gpu_scheduler.h +++ b/include/drm/gpu_scheduler.h @@ -730,4 +730,54 @@ static inline bool drm_sched_job_is_signaled(struct drm_sched_job *job) dma_fence_is_signaled(&s_fence->finished); } +/** + * struct drm_sched_pending_job_iter - DRM scheduler pending job iterator state + * @sched: DRM scheduler associated with pending job iterator + */ +struct drm_sched_pending_job_iter { + struct drm_gpu_scheduler *sched; +}; + +/* Drivers should never call this directly */ +static inline struct drm_sched_pending_job_iter +__drm_sched_pending_job_iter_begin(struct drm_gpu_scheduler *sched) +{ + struct drm_sched_pending_job_iter iter = { + .sched = sched, + }; + + WARN_ON(!drm_sched_is_stopped(sched)); + return iter; +} + +/* Drivers should never call this directly */ +static inline void +__drm_sched_pending_job_iter_end(const struct drm_sched_pending_job_iter iter) +{ + WARN_ON(!drm_sched_is_stopped(iter.sched)); +} + +DEFINE_CLASS(drm_sched_pending_job_iter, struct drm_sched_pending_job_iter, + __drm_sched_pending_job_iter_end(_T), + __drm_sched_pending_job_iter_begin(__sched), + struct drm_gpu_scheduler *__sched); +static inline void * +class_drm_sched_pending_job_iter_lock_ptr(class_drm_sched_pending_job_iter_t *_T) +{ return _T; } +#define class_drm_sched_pending_job_iter_is_conditional false + +/** + * drm_sched_for_each_pending_job() - Iterator for each pending job in scheduler + * @__job: Current pending job being iterated over + * @__sched: DRM scheduler to iterate over pending jobs + * @__entity: DRM scheduler entity to filter jobs, NULL indicates no filter + * + * Iterator for each pending job in scheduler, filtering on an entity, and + * enforcing scheduler is fully stopped + */ +#define drm_sched_for_each_pending_job(__job, __sched, __entity) \ + scoped_guard(drm_sched_pending_job_iter, (__sched)) \ + list_for_each_entry((__job), &(__sched)->pending_list, list) \ + for_each_if(!(__entity) || (__job)->entity == (__entity)) + #endif -- 2.34.1