From patchwork Thu Apr 29 19:03:40 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jason Ekstrand X-Patchwork-Id: 12231735 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 3659EC4360C for ; Thu, 29 Apr 2021 19:04:52 +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 DB1D4613FF for ; Thu, 29 Apr 2021 19:04:51 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org DB1D4613FF 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 7C8FC6F486; Thu, 29 Apr 2021 19:04:32 +0000 (UTC) Received: from mail-pg1-x530.google.com (mail-pg1-x530.google.com [IPv6:2607:f8b0:4864:20::530]) by gabe.freedesktop.org (Postfix) with ESMTPS id B0F426F486 for ; Thu, 29 Apr 2021 19:04:27 +0000 (UTC) Received: by mail-pg1-x530.google.com with SMTP id t22so12571071pgu.0 for ; Thu, 29 Apr 2021 12:04:27 -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=e9XwN1PPCebSF2ERUQmd1iCFEJkqMBsh8Lyu/BwszRI=; b=M7oQlEjA/aZvZFRHgUvdrHkRD0eRiHHcoryV7zVtkDf/prmsSgtJYw104eRhNFULdR FcgcrH61745X4Bu7paF0AR78nWetoQTQsaRKP5os5s93qk7goSkW930bIno8vZO3N2AB t3ROxK53W3W/7h0aBusH84pKYcrFuw8E/ztxdxJ49y0McUiqE8b9vtWFivaQm21oGteS Qhlol/kk3JW5dT1FrD3S7qCg1uEqL6gp4dZkW7Eifh/frloG1c3wGOHksLE+5cccFUES UwC4MlH0hnskhRHwwd5OJ8VtKYJknt9E4x+ODaizrdjlVzW0zL+0N6F96Aptfz7nVUh1 79Tw== 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=e9XwN1PPCebSF2ERUQmd1iCFEJkqMBsh8Lyu/BwszRI=; b=QudvKL7daGEIREIlKmAOc4Hzo30+XzmvvZGEL2xfKsT1kp5YFlXmxBLZkL7Pp/gQ9V YGg0f/6mhSvvJh+Tww+wwOIMyYkkq3Nirkl+Dn5LQk6BHM+MoS00nRH4hTapQLTRUB8W lOmkJIoQrPlVI3pOhAnwW/mevcVQBBxisTWzdBwQEb4cpowWntwBnL7Y09r8ZPJdg/p5 mSxrGXEzFG66X8mj7+x8A2NSwjRj8w4v8Q6Fv1aebgHNXyNA3VxV1wbD3lQ9UUwPX0qH 6amItBsc2AozH6eBxadSpXIWueFvts3GXGTg50l1CsXVcvWNmPMAv32481vNCkTcZpEE ZPcw== X-Gm-Message-State: AOAM5323/kT1F/AFA7Y0UZKsVA5xbdrsMuhY9gH/OKzZzjQtDWHQon1l vK9gf7xvf3xro4RgHPWmku2xfw== X-Google-Smtp-Source: ABdhPJyWB4rbLrTRE3iGwV4J0yqj34QQfS9SJJ+Ybn3O0qGBunKjB3x2NaEDK0sDb9wMaKKf/X6Nbw== X-Received: by 2002:a63:4c4b:: with SMTP id m11mr1107056pgl.245.1619723067002; Thu, 29 Apr 2021 12:04:27 -0700 (PDT) Received: from omlet.lan ([134.134.139.83]) by smtp.gmail.com with ESMTPSA id b21sm3114405pji.39.2021.04.29.12.04.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 29 Apr 2021 12:04:26 -0700 (PDT) From: Jason Ekstrand To: intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Subject: [PATCH 25/25] drm/i915/gem: Roll all of context creation together Date: Thu, 29 Apr 2021 14:03:40 -0500 Message-Id: <20210429190340.1555632-26-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" Now that we have the whole engine set and VM at context creation time, we can just assign those fields instead of creating first and handling the VM and engines later. This lets us avoid creating useless VMs and engine sets and lets us git rid of the complex VM setting code. Signed-off-by: Jason Ekstrand --- drivers/gpu/drm/i915/gem/i915_gem_context.c | 159 ++++++------------ .../gpu/drm/i915/gem/selftests/mock_context.c | 33 ++-- 2 files changed, 64 insertions(+), 128 deletions(-) diff --git a/drivers/gpu/drm/i915/gem/i915_gem_context.c b/drivers/gpu/drm/i915/gem/i915_gem_context.c index dd066b5009fe7..dc44bdd1fa348 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_context.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_context.c @@ -1204,56 +1204,6 @@ static int __context_set_persistence(struct i915_gem_context *ctx, bool state) return 0; } -static struct i915_gem_context * -__create_context(struct drm_i915_private *i915, - const struct i915_gem_proto_context *pc) -{ - struct i915_gem_context *ctx; - struct i915_gem_engines *e; - int err; - int i; - - ctx = kzalloc(sizeof(*ctx), GFP_KERNEL); - if (!ctx) - return ERR_PTR(-ENOMEM); - - kref_init(&ctx->ref); - ctx->i915 = i915; - ctx->sched = pc->sched; - mutex_init(&ctx->mutex); - INIT_LIST_HEAD(&ctx->link); - - spin_lock_init(&ctx->stale.lock); - INIT_LIST_HEAD(&ctx->stale.engines); - - mutex_init(&ctx->engines_mutex); - e = default_engines(ctx); - if (IS_ERR(e)) { - err = PTR_ERR(e); - goto err_free; - } - RCU_INIT_POINTER(ctx->engines, e); - - INIT_RADIX_TREE(&ctx->handles_vma, GFP_KERNEL); - mutex_init(&ctx->lut_mutex); - - /* NB: Mark all slices as needing a remap so that when the context first - * loads it will restore whatever remap state already exists. If there - * is no remap info, it will be a NOP. */ - ctx->remap_slice = ALL_L3_SLICES(i915); - - ctx->user_flags = pc->user_flags; - - for (i = 0; i < ARRAY_SIZE(ctx->hang_timestamp); i++) - ctx->hang_timestamp[i] = jiffies - CONTEXT_FAST_HANG_JIFFIES; - - return ctx; - -err_free: - kfree(ctx); - return ERR_PTR(err); -} - static inline struct i915_gem_engines * __context_engines_await(const struct i915_gem_context *ctx, bool *user_engines) @@ -1297,86 +1247,77 @@ context_apply_all(struct i915_gem_context *ctx, i915_sw_fence_complete(&e->fence); } -static void __apply_ppgtt(struct intel_context *ce, void *vm) -{ - i915_vm_put(ce->vm); - ce->vm = i915_vm_get(vm); -} - -static struct i915_address_space * -__set_ppgtt(struct i915_gem_context *ctx, struct i915_address_space *vm) -{ - struct i915_address_space *old; - - old = rcu_replace_pointer(ctx->vm, - i915_vm_open(vm), - lockdep_is_held(&ctx->mutex)); - GEM_BUG_ON(old && i915_vm_is_4lvl(vm) != i915_vm_is_4lvl(old)); - - context_apply_all(ctx, __apply_ppgtt, vm); - - return old; -} - -static void __assign_ppgtt(struct i915_gem_context *ctx, - struct i915_address_space *vm) -{ - if (vm == rcu_access_pointer(ctx->vm)) - return; - - vm = __set_ppgtt(ctx, vm); - if (vm) - i915_vm_close(vm); -} - static struct i915_gem_context * i915_gem_create_context(struct drm_i915_private *i915, const struct i915_gem_proto_context *pc) { struct i915_gem_context *ctx; - int ret; + struct i915_gem_engines *e; + int err; + int i; - ctx = __create_context(i915, pc); - if (IS_ERR(ctx)) - return ctx; + ctx = kzalloc(sizeof(*ctx), GFP_KERNEL); + if (!ctx) + return ERR_PTR(-ENOMEM); - if (pc->vm) { - mutex_lock(&ctx->mutex); - __assign_ppgtt(ctx, pc->vm); - mutex_unlock(&ctx->mutex); - } + kref_init(&ctx->ref); + ctx->i915 = i915; + ctx->sched = pc->sched; + mutex_init(&ctx->mutex); + INIT_LIST_HEAD(&ctx->link); - if (pc->num_user_engines >= 0) { - struct i915_gem_engines *engines; + spin_lock_init(&ctx->stale.lock); + INIT_LIST_HEAD(&ctx->stale.engines); - engines = user_engines(ctx, pc->num_user_engines, - pc->user_engines); - if (IS_ERR(engines)) { - context_close(ctx); - return ERR_CAST(engines); - } + if (pc->vm) + RCU_INIT_POINTER(ctx->vm, i915_vm_open(pc->vm)); - mutex_lock(&ctx->engines_mutex); + mutex_init(&ctx->engines_mutex); + if (pc->num_user_engines >= 0) { i915_gem_context_set_user_engines(ctx); - engines = rcu_replace_pointer(ctx->engines, engines, 1); - mutex_unlock(&ctx->engines_mutex); - - free_engines(engines); + e = user_engines(ctx, pc->num_user_engines, pc->user_engines); + } else { + i915_gem_context_clear_user_engines(ctx); + e = default_engines(ctx); + } + if (IS_ERR(e)) { + err = PTR_ERR(e); + goto err_vm; } + RCU_INIT_POINTER(ctx->engines, e); + + INIT_RADIX_TREE(&ctx->handles_vma, GFP_KERNEL); + mutex_init(&ctx->lut_mutex); + + /* NB: Mark all slices as needing a remap so that when the context first + * loads it will restore whatever remap state already exists. If there + * is no remap info, it will be a NOP. */ + ctx->remap_slice = ALL_L3_SLICES(i915); + + ctx->user_flags = pc->user_flags; + + for (i = 0; i < ARRAY_SIZE(ctx->hang_timestamp); i++) + ctx->hang_timestamp[i] = jiffies - CONTEXT_FAST_HANG_JIFFIES; if (pc->single_timeline) { - ret = drm_syncobj_create(&ctx->syncobj, + err = drm_syncobj_create(&ctx->syncobj, DRM_SYNCOBJ_CREATE_SIGNALED, NULL); - if (ret) { - context_close(ctx); - return ERR_PTR(ret); - } + if (err) + goto err_engines; } trace_i915_context_create(ctx); return ctx; + +err_engines: + free_engines(e); +err_vm: + if (ctx->vm) + i915_vm_close(ctx->vm); + kfree(ctx); + return ERR_PTR(err); } static void init_contexts(struct i915_gem_contexts *gc) diff --git a/drivers/gpu/drm/i915/gem/selftests/mock_context.c b/drivers/gpu/drm/i915/gem/selftests/mock_context.c index 0a2a6f64965b6..3aeec20b80c27 100644 --- a/drivers/gpu/drm/i915/gem/selftests/mock_context.c +++ b/drivers/gpu/drm/i915/gem/selftests/mock_context.c @@ -30,15 +30,6 @@ mock_context(struct drm_i915_private *i915, i915_gem_context_set_persistence(ctx); - mutex_init(&ctx->engines_mutex); - e = default_engines(ctx); - if (IS_ERR(e)) - goto err_free; - RCU_INIT_POINTER(ctx->engines, e); - - INIT_RADIX_TREE(&ctx->handles_vma, GFP_KERNEL); - mutex_init(&ctx->lut_mutex); - if (name) { struct i915_ppgtt *ppgtt; @@ -46,25 +37,29 @@ mock_context(struct drm_i915_private *i915, ppgtt = mock_ppgtt(i915, name); if (!ppgtt) - goto err_put; - - mutex_lock(&ctx->mutex); - __set_ppgtt(ctx, &ppgtt->vm); - mutex_unlock(&ctx->mutex); + goto err_free; + ctx->vm = i915_vm_open(&ppgtt->vm); i915_vm_put(&ppgtt->vm); } + mutex_init(&ctx->engines_mutex); + e = default_engines(ctx); + if (IS_ERR(e)) + goto err_vm; + RCU_INIT_POINTER(ctx->engines, e); + + INIT_RADIX_TREE(&ctx->handles_vma, GFP_KERNEL); + mutex_init(&ctx->lut_mutex); + return ctx; +err_vm: + if (ctx->vm) + i915_vm_close(ctx->vm); err_free: kfree(ctx); return NULL; - -err_put: - i915_gem_context_set_closed(ctx); - i915_gem_context_put(ctx); - return NULL; } void mock_context_close(struct i915_gem_context *ctx)