From patchwork Thu Apr 29 19:03:30 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jason Ekstrand X-Patchwork-Id: 12231721 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.5 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1A226C43470 for ; Thu, 29 Apr 2021 19:04:37 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id AD222613FF for ; Thu, 29 Apr 2021 19:04:36 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org AD222613FF Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=jlekstrand.net Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 94B586F465; Thu, 29 Apr 2021 19:04:16 +0000 (UTC) Received: from mail-pl1-x635.google.com (mail-pl1-x635.google.com [IPv6:2607:f8b0:4864:20::635]) by gabe.freedesktop.org (Postfix) with ESMTPS id 035A26F46D for ; Thu, 29 Apr 2021 19:04:11 +0000 (UTC) Received: by mail-pl1-x635.google.com with SMTP id y1so19641552plg.11 for ; Thu, 29 Apr 2021 12:04:10 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=jlekstrand-net.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=T6azKxpl0fQC4J1twdBaLhqQojaulUTGUurZnZEhagQ=; b=niw4Qst+DEmX2ybfyI+9UNkptbP5lIFubB/2LRxf7DXWU9ylfeE9bY+Y5zemeizJcW q/q9HbPWIGcvAIA8onfWd3eef/e5jDn9b+maAvNaCmh8FX8TtcrqvUYpsmRUyLjAeHxx NGWJfh2FG5DRl8GeGVQgFXPAV6ZQy0x10Pmni/kcLkRgnJ6RXOpQ9Iq0ykOIzQHAl1Nl 8t88fkvWsw7o7ECr4J+KFjT3FlHaXszYVslqnzwiMvBkNGRhEEaY7Jq0jQsxfQo4Bw8e Rf9aq9UyYZe3hDnpwKbZFRJnwC7+L6RqrhA/JZbyIf0DVyMJEhvfTbs3Zsp3YbsxprlQ 2PAQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=T6azKxpl0fQC4J1twdBaLhqQojaulUTGUurZnZEhagQ=; b=PmlHJ5MlvA7u4/I+tj9woezFhILyA3aaf4b+/NCDk8qZvVBr1ox85edqdo4cxQYUZU B2ZDM612iByk+WwWrbHx2V3AUho0ND3SRz8XD/3RAREqSp6vf4yu018au2JGre2HqiQq Kuk/mZyXwLGq7LFcxIMaRHdQghJ8jhNjefVLNARFmtul7IW11XEQeRGCS76MDDZs5yc5 cUuwPkYf6+/0XumlxmmEsoZSfv/OdvAUgnxuOWGgnF5jod1FPVR6yGYs+tD+amn0Mrze yGYGezarctj6rS+sJxRllgTTRzzmPyn9qmOPPdR5SJwmvROk43BAolrnFEsfKA/53rNX h3mw== X-Gm-Message-State: AOAM5320nXT7vnQEw87lvXwIkEK3h7CtQuFFo0jKDcOl8J58JmConPSH xXbOjJQMVwjQc1g5t1zdnKIBrw== X-Google-Smtp-Source: ABdhPJyYLnvo7Q6mTsRtkHn1epZ3D5XeRd7HqpkCJCC/DOmSQeSgknODrgIlIxN1cZNlgt3+/dmicQ== X-Received: by 2002:a17:902:b703:b029:eb:59c3:a9b0 with SMTP id d3-20020a170902b703b02900eb59c3a9b0mr1162169pls.45.1619723050378; Thu, 29 Apr 2021 12:04:10 -0700 (PDT) Received: from omlet.lan ([134.134.139.83]) by smtp.gmail.com with ESMTPSA id b21sm3114405pji.39.2021.04.29.12.04.09 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 29 Apr 2021 12:04:09 -0700 (PDT) From: Jason Ekstrand To: intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Subject: [PATCH 15/25] drm/i915: Add gem/i915_gem_context.h to the docs Date: Thu, 29 Apr 2021 14:03:30 -0500 Message-Id: <20210429190340.1555632-16-jason@jlekstrand.net> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210429190340.1555632-1-jason@jlekstrand.net> References: <20210429190340.1555632-1-jason@jlekstrand.net> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Jason Ekstrand Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" In order to prevent kernel doc warnings, also fill out docs for any missing fields and fix those that forgot the "@". Signed-off-by: Jason Ekstrand --- Documentation/gpu/i915.rst | 2 + .../gpu/drm/i915/gem/i915_gem_context_types.h | 43 ++++++++++++++++--- 2 files changed, 38 insertions(+), 7 deletions(-) diff --git a/Documentation/gpu/i915.rst b/Documentation/gpu/i915.rst index 486c720f38907..0529e5183982e 100644 --- a/Documentation/gpu/i915.rst +++ b/Documentation/gpu/i915.rst @@ -422,6 +422,8 @@ Batchbuffer Parsing User Batchbuffer Execution -------------------------- +.. kernel-doc:: drivers/gpu/drm/i915/gem/i915_gem_context_types.h + .. kernel-doc:: drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c :doc: User command execution diff --git a/drivers/gpu/drm/i915/gem/i915_gem_context_types.h b/drivers/gpu/drm/i915/gem/i915_gem_context_types.h index df76767f0c41b..5f0673a2129f9 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_context_types.h +++ b/drivers/gpu/drm/i915/gem/i915_gem_context_types.h @@ -30,19 +30,39 @@ struct i915_address_space; struct intel_timeline; struct intel_ring; +/** + * struct i915_gem_engines - A set of engines + */ struct i915_gem_engines { union { + /** @link: Link in i915_gem_context::stale::engines */ struct list_head link; + + /** @rcu: RCU to use when freeing */ struct rcu_head rcu; }; + + /** @fence: Fence used for delayed destruction of engines */ struct i915_sw_fence fence; + + /** @ctx: i915_gem_context backpointer */ struct i915_gem_context *ctx; + + /** @num_engines: Number of engines in this set */ unsigned int num_engines; + + /** @engines: Array of engines */ struct intel_context *engines[]; }; +/** + * struct i915_gem_engines_iter - Iterator for an i915_gem_engines set + */ struct i915_gem_engines_iter { + /** @idx: Index into i915_gem_engines::engines */ unsigned int idx; + + /** @engines: Engine set being iterated */ const struct i915_gem_engines *engines; }; @@ -53,10 +73,10 @@ struct i915_gem_engines_iter { * logical hardware state for a particular client. */ struct i915_gem_context { - /** i915: i915 device backpointer */ + /** @i915: i915 device backpointer */ struct drm_i915_private *i915; - /** file_priv: owning file descriptor */ + /** @file_priv: owning file descriptor */ struct drm_i915_file_private *file_priv; /** @@ -81,7 +101,9 @@ struct i915_gem_context { * CONTEXT_USER_ENGINES flag is set). */ struct i915_gem_engines __rcu *engines; - struct mutex engines_mutex; /* guards writes to engines */ + + /** @engines_mutex: guards writes to engines */ + struct mutex engines_mutex; /** * @syncobj: Shared timeline syncobj @@ -118,7 +140,7 @@ struct i915_gem_context { */ struct pid *pid; - /** link: place with &drm_i915_private.context_list */ + /** @link: place with &drm_i915_private.context_list */ struct list_head link; /** @@ -153,11 +175,13 @@ struct i915_gem_context { #define CONTEXT_CLOSED 0 #define CONTEXT_USER_ENGINES 1 + /** @mutex: guards everything that isn't engines or handles_vma */ struct mutex mutex; + /** @sched: scheduler parameters */ struct i915_sched_attr sched; - /** guilty_count: How many times this context has caused a GPU hang. */ + /** @guilty_count: How many times this context has caused a GPU hang. */ atomic_t guilty_count; /** * @active_count: How many times this context was active during a GPU @@ -171,15 +195,17 @@ struct i915_gem_context { unsigned long hang_timestamp[2]; #define CONTEXT_FAST_HANG_JIFFIES (120 * HZ) /* 3 hangs within 120s? Banned! */ - /** remap_slice: Bitmask of cache lines that need remapping */ + /** @remap_slice: Bitmask of cache lines that need remapping */ u8 remap_slice; /** - * handles_vma: rbtree to look up our context specific obj/vma for + * @handles_vma: rbtree to look up our context specific obj/vma for * the user handle. (user handles are per fd, but the binding is * per vm, which may be one per context or shared with the global GTT) */ struct radix_tree_root handles_vma; + + /** @lut_mutex: Locks handles_vma */ struct mutex lut_mutex; /** @@ -191,8 +217,11 @@ struct i915_gem_context { */ char name[TASK_COMM_LEN + 8]; + /** @stale: tracks stale engines to be destroyed */ struct { + /** @lock: guards engines */ spinlock_t lock; + /** @engines: list of stale engines */ struct list_head engines; } stale; };