From patchwork Fri Sep 3 18:47:52 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Rob Clark X-Patchwork-Id: 12474949 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=-15.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham 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 C5A33C433F5 for ; Fri, 3 Sep 2021 18:44:05 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B0F17610F9 for ; Fri, 3 Sep 2021 18:44:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1349459AbhICSpE (ORCPT ); Fri, 3 Sep 2021 14:45:04 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41258 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1349906AbhICSpD (ORCPT ); Fri, 3 Sep 2021 14:45:03 -0400 Received: from mail-pl1-x631.google.com (mail-pl1-x631.google.com [IPv6:2607:f8b0:4864:20::631]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D2882C061575; Fri, 3 Sep 2021 11:44:02 -0700 (PDT) Received: by mail-pl1-x631.google.com with SMTP id n18so71066plp.7; Fri, 03 Sep 2021 11:44:02 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=PZdCcQ8tcqex0OLD2RIlUbOtwTacOGhblZ9bIPZWiKA=; b=liQZziVpS09I/Y7nKQPncOo/kNAL0/xeZUTUjD1s54CZDfEbTzHj7pwCzFeZUKFizf 6/Qkw9Jf9hTRnrghuIvaLNWgvZN1/CYWs0dVX5npYK/V1r4/WVMnWlUVrwoJiwAObIGP xHOMxFuQEGvXxKV0pb8/oTgQ90bWS9eCdhsx80WAu+D7oYoCzrTGurYs/tdlfyyA5h7B pj+r2b2XHgonzl73U4Ev853xmLkvyVtpfgERjxSnCLoLkz3FFaY8BcGH64tzJNdaaYqS UfhwyWzviS/xR5bJmxpcTNBn9ruB3j6YzqyavcgIWQe504AWeZX1DYeGouvP+WAPc4n/ 7pQA== 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=PZdCcQ8tcqex0OLD2RIlUbOtwTacOGhblZ9bIPZWiKA=; b=BkSjYAKPekBrAsREUFHLWNV1loa5czaxVUM01cxU8CZrnQ9+HtajzZY7p9YY+iu/yH l+noJAjo0nW+khIqGp26An+EdlViVkOcUU1ayIlLFERiGuJjk0mHuH4DQtyU+wxBg8Ix YAsGbb2CVqgnXO++tjIbtizkW8BkaII2tjMazB19ypXw+EAI/ibX7cZDSYVDuMxcH19h GddW7Gs4gmJ32iuq99+hfbV8nD7n42fo18f0sn0xgEnhQz2vRUxuzTmz8Ziru4QztRZi +u0WFPShEbHn29Zvaw4XHo6BFFpkhHhjOoLmVLNMmAOZG6o1g63djxBy7txI5OfUZDx+ +SAA== X-Gm-Message-State: AOAM530c+hX6nohmU4rJTHXtEkfMqkLQmrD2/ZsTpyzs3DXabuYTZX98 OPo/k0Nxpp0wDCbd8pwTTts= X-Google-Smtp-Source: ABdhPJyqZa627QuEiIJsQlyGdv0n86CMJYOQxQvddGI6zVCpjyV+AqIaUyU9EoPvz1A1JWWcw7Dftg== X-Received: by 2002:a17:90b:1246:: with SMTP id gx6mr292968pjb.94.1630694642383; Fri, 03 Sep 2021 11:44:02 -0700 (PDT) Received: from localhost (c-73-25-156-94.hsd1.or.comcast.net. [73.25.156.94]) by smtp.gmail.com with ESMTPSA id z65sm39685pjj.43.2021.09.03.11.44.00 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 03 Sep 2021 11:44:01 -0700 (PDT) From: Rob Clark To: dri-devel@lists.freedesktop.org, linaro-mm-sig@lists.linaro.org Cc: Daniel Vetter , =?utf-8?q?Christian_K=C3=B6nig?= , =?utf-8?q?Michel_D=C3=A4nzer?= , Pekka Paalanen , Rob Clark , =?utf-8?q?Christian_K=C3=B6nig?= , Sumit Semwal , Gustavo Padovan , linux-media@vger.kernel.org (open list:SYNC FILE FRAMEWORK), linux-kernel@vger.kernel.org (open list) Subject: [PATCH v3 1/9] dma-fence: Add deadline awareness Date: Fri, 3 Sep 2021 11:47:52 -0700 Message-Id: <20210903184806.1680887-2-robdclark@gmail.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210903184806.1680887-1-robdclark@gmail.com> References: <20210903184806.1680887-1-robdclark@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org From: Rob Clark Add a way to hint to the fence signaler of an upcoming deadline, such as vblank, which the fence waiter would prefer not to miss. This is to aid the fence signaler in making power management decisions, like boosting frequency as the deadline approaches and awareness of missing deadlines so that can be factored in to the frequency scaling. v2: Drop dma_fence::deadline and related logic to filter duplicate deadlines, to avoid increasing dma_fence size. The fence-context implementation will need similar logic to track deadlines of all the fences on the same timeline. [ckoenig] Signed-off-by: Rob Clark Reviewed-by: Christian König Signed-off-by: Rob Clark --- drivers/dma-buf/dma-fence.c | 20 ++++++++++++++++++++ include/linux/dma-fence.h | 16 ++++++++++++++++ 2 files changed, 36 insertions(+) diff --git a/drivers/dma-buf/dma-fence.c b/drivers/dma-buf/dma-fence.c index ce0f5eff575d..1f444863b94d 100644 --- a/drivers/dma-buf/dma-fence.c +++ b/drivers/dma-buf/dma-fence.c @@ -910,6 +910,26 @@ dma_fence_wait_any_timeout(struct dma_fence **fences, uint32_t count, } EXPORT_SYMBOL(dma_fence_wait_any_timeout); + +/** + * dma_fence_set_deadline - set desired fence-wait deadline + * @fence: the fence that is to be waited on + * @deadline: the time by which the waiter hopes for the fence to be + * signaled + * + * Inform the fence signaler of an upcoming deadline, such as vblank, by + * which point the waiter would prefer the fence to be signaled by. This + * is intended to give feedback to the fence signaler to aid in power + * management decisions, such as boosting GPU frequency if a periodic + * vblank deadline is approaching. + */ +void dma_fence_set_deadline(struct dma_fence *fence, ktime_t deadline) +{ + if (fence->ops->set_deadline && !dma_fence_is_signaled(fence)) + fence->ops->set_deadline(fence, deadline); +} +EXPORT_SYMBOL(dma_fence_set_deadline); + /** * dma_fence_init - Initialize a custom fence. * @fence: the fence to initialize diff --git a/include/linux/dma-fence.h b/include/linux/dma-fence.h index 6ffb4b2c6371..9c809f0d5d0a 100644 --- a/include/linux/dma-fence.h +++ b/include/linux/dma-fence.h @@ -99,6 +99,7 @@ enum dma_fence_flag_bits { DMA_FENCE_FLAG_SIGNALED_BIT, DMA_FENCE_FLAG_TIMESTAMP_BIT, DMA_FENCE_FLAG_ENABLE_SIGNAL_BIT, + DMA_FENCE_FLAG_HAS_DEADLINE_BIT, DMA_FENCE_FLAG_USER_BITS, /* must always be last member */ }; @@ -261,6 +262,19 @@ struct dma_fence_ops { */ void (*timeline_value_str)(struct dma_fence *fence, char *str, int size); + + /** + * @set_deadline: + * + * Callback to allow a fence waiter to inform the fence signaler of an + * upcoming deadline, such as vblank, by which point the waiter would + * prefer the fence to be signaled by. This is intended to give feedback + * to the fence signaler to aid in power management decisions, such as + * boosting GPU frequency. + * + * This callback is optional. + */ + void (*set_deadline)(struct dma_fence *fence, ktime_t deadline); }; void dma_fence_init(struct dma_fence *fence, const struct dma_fence_ops *ops, @@ -586,6 +600,8 @@ static inline signed long dma_fence_wait(struct dma_fence *fence, bool intr) return ret < 0 ? ret : 0; } +void dma_fence_set_deadline(struct dma_fence *fence, ktime_t deadline); + struct dma_fence *dma_fence_get_stub(void); struct dma_fence *dma_fence_allocate_private_stub(void); u64 dma_fence_context_alloc(unsigned num); From patchwork Fri Sep 3 18:47:55 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Rob Clark X-Patchwork-Id: 12474951 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=-15.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham 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 83A85C433EF for ; Fri, 3 Sep 2021 18:44:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6D3E16054E for ; Fri, 3 Sep 2021 18:44:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1349684AbhICSpN (ORCPT ); Fri, 3 Sep 2021 14:45:13 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41308 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1350386AbhICSpM (ORCPT ); Fri, 3 Sep 2021 14:45:12 -0400 Received: from mail-pj1-x1030.google.com (mail-pj1-x1030.google.com [IPv6:2607:f8b0:4864:20::1030]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0F102C0613C1; Fri, 3 Sep 2021 11:44:12 -0700 (PDT) Received: by mail-pj1-x1030.google.com with SMTP id fs6so158051pjb.4; Fri, 03 Sep 2021 11:44:12 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=kNd3pUa8VSDFpXZWbZznThqTaFkdBW02YtveOJexbvE=; b=el/Zyhzpq6C+lzW0KZNT3TFdyeQ8+s8DzNLce41glYYoXilPWJigLGAcl7Q7Qrvw0+ UfNiy4xhac1Sy6WJfGwwpQwCh5/yED257sTorJ25yPS9uaoLuhbnAmyru+Jsj7EVtaLi s0lVN5ibn0UB6p0AaQvZBZAKsqXyuGcvYbTC0FVnQ1cNmOXytt8lxLINdFGk+hnBSUm3 4qwVsmij7cAryCVADzufMgZanMMfWSLpAYleYs36ko4yROAW1BdK/XCbTc5ZEP15fBpv 18HpjqyCQ5fuWY5oNpe8PAnz9tTgLP/0tN8iU85H1JiMPaQor8/5uPgvDsW2w7GrtVXn nvpA== 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=kNd3pUa8VSDFpXZWbZznThqTaFkdBW02YtveOJexbvE=; b=fvVgu4ZRzaHoyXJMFIYbcdYskoESTLtzmu+URbjSvr+x1PSImN0URcpUGcjwuj5Lxw Z0lHAet6dvrnhfs1QUPZjwIPn0GOF7qplorcMbXFOqGIVxI9p3LDPiJVU+jzMvysFlj6 SiaWqxei5PPbU5NOV3oKgND4O1VzOWceL8CkdPJu4lbjDGPcp4yO3332UFlkSAQVuZEp Qy6n01iAadT28mb4uYS78Btd+nfYxnAMwKlJeV76FIPCvi/D0VIn92cjX+dW2KkEjzDv 0rtqpMx0/j+5Zmo82wDtJFV6UcKK40aXK8dPFb8qFiuOC1XMI7aEBwWc8N2x5YuGu7Dn R+pQ== X-Gm-Message-State: AOAM530lXonyamvnDKOjnysUiD4OObBxgyyThpjNu4Ft+Gc0PdIkjay1 rXT9/PHuITCBi7R2inZr0y8= X-Google-Smtp-Source: ABdhPJx9HNwvwUsGKFTzFNKJfhQcPK7maQv1m8szkB9X9brPKTc5jjLVn0vz9WuNpr/OXk2o+TaAzg== X-Received: by 2002:a17:90a:b389:: with SMTP id e9mr361971pjr.94.1630694651583; Fri, 03 Sep 2021 11:44:11 -0700 (PDT) Received: from localhost (c-73-25-156-94.hsd1.or.comcast.net. [73.25.156.94]) by smtp.gmail.com with ESMTPSA id u8sm105925pgc.69.2021.09.03.11.44.10 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 03 Sep 2021 11:44:10 -0700 (PDT) From: Rob Clark To: dri-devel@lists.freedesktop.org, linaro-mm-sig@lists.linaro.org Cc: Daniel Vetter , =?utf-8?q?Christian_K=C3=B6nig?= , =?utf-8?q?Michel_D=C3=A4nzer?= , Pekka Paalanen , Rob Clark , David Airlie , Sumit Semwal , =?utf-8?q?Christian_K=C3=B6nig?= , Tian Tao , Steven Price , Melissa Wen , Luben Tuikov , Andrey Grodzovsky , Boris Brezillon , Jack Zhang , linux-kernel@vger.kernel.org (open list), linux-media@vger.kernel.org (open list:DMA BUFFER SHARING FRAMEWORK) Subject: [PATCH v3 4/9] drm/scheduler: Add fence deadline support Date: Fri, 3 Sep 2021 11:47:55 -0700 Message-Id: <20210903184806.1680887-5-robdclark@gmail.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210903184806.1680887-1-robdclark@gmail.com> References: <20210903184806.1680887-1-robdclark@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org From: Rob Clark As the finished fence is the one that is exposed to userspace, and therefore the one that other operations, like atomic update, would block on, we need to propagate the deadline from from the finished fence to the actual hw fence. v2: Split into drm_sched_fence_set_parent() (ckoenig) Signed-off-by: Rob Clark --- drivers/gpu/drm/scheduler/sched_fence.c | 34 +++++++++++++++++++++++++ drivers/gpu/drm/scheduler/sched_main.c | 2 +- include/drm/gpu_scheduler.h | 8 ++++++ 3 files changed, 43 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/scheduler/sched_fence.c b/drivers/gpu/drm/scheduler/sched_fence.c index bcea035cf4c6..4fc41a71d1c7 100644 --- a/drivers/gpu/drm/scheduler/sched_fence.c +++ b/drivers/gpu/drm/scheduler/sched_fence.c @@ -128,6 +128,30 @@ static void drm_sched_fence_release_finished(struct dma_fence *f) dma_fence_put(&fence->scheduled); } +static void drm_sched_fence_set_deadline_finished(struct dma_fence *f, + ktime_t deadline) +{ + struct drm_sched_fence *fence = to_drm_sched_fence(f); + unsigned long flags; + + spin_lock_irqsave(&fence->lock, flags); + + /* If we already have an earlier deadline, keep it: */ + if (test_bit(DMA_FENCE_FLAG_HAS_DEADLINE_BIT, &f->flags) && + ktime_before(fence->deadline, deadline)) { + spin_unlock_irqrestore(&fence->lock, flags); + return; + } + + fence->deadline = deadline; + set_bit(DMA_FENCE_FLAG_HAS_DEADLINE_BIT, &f->flags); + + spin_unlock_irqrestore(&fence->lock, flags); + + if (fence->parent) + dma_fence_set_deadline(fence->parent, deadline); +} + static const struct dma_fence_ops drm_sched_fence_ops_scheduled = { .get_driver_name = drm_sched_fence_get_driver_name, .get_timeline_name = drm_sched_fence_get_timeline_name, @@ -138,6 +162,7 @@ static const struct dma_fence_ops drm_sched_fence_ops_finished = { .get_driver_name = drm_sched_fence_get_driver_name, .get_timeline_name = drm_sched_fence_get_timeline_name, .release = drm_sched_fence_release_finished, + .set_deadline = drm_sched_fence_set_deadline_finished, }; struct drm_sched_fence *to_drm_sched_fence(struct dma_fence *f) @@ -152,6 +177,15 @@ struct drm_sched_fence *to_drm_sched_fence(struct dma_fence *f) } EXPORT_SYMBOL(to_drm_sched_fence); +void drm_sched_fence_set_parent(struct drm_sched_fence *s_fence, + struct dma_fence *fence) +{ + s_fence->parent = dma_fence_get(fence); + if (test_bit(DMA_FENCE_FLAG_HAS_DEADLINE_BIT, + &s_fence->finished.flags)) + dma_fence_set_deadline(fence, s_fence->deadline); +} + struct drm_sched_fence *drm_sched_fence_alloc(struct drm_sched_entity *entity, void *owner) { diff --git a/drivers/gpu/drm/scheduler/sched_main.c b/drivers/gpu/drm/scheduler/sched_main.c index 595e47ff7d06..27bf0ac0625f 100644 --- a/drivers/gpu/drm/scheduler/sched_main.c +++ b/drivers/gpu/drm/scheduler/sched_main.c @@ -978,7 +978,7 @@ static int drm_sched_main(void *param) drm_sched_fence_scheduled(s_fence); if (!IS_ERR_OR_NULL(fence)) { - s_fence->parent = dma_fence_get(fence); + drm_sched_fence_set_parent(s_fence, fence); r = dma_fence_add_callback(fence, &sched_job->cb, drm_sched_job_done_cb); if (r == -ENOENT) diff --git a/include/drm/gpu_scheduler.h b/include/drm/gpu_scheduler.h index 7f77a455722c..158ddd662469 100644 --- a/include/drm/gpu_scheduler.h +++ b/include/drm/gpu_scheduler.h @@ -238,6 +238,12 @@ struct drm_sched_fence { */ struct dma_fence finished; + /** + * @deadline: deadline set on &drm_sched_fence.finished which + * potentially needs to be propagated to &drm_sched_fence.parent + */ + ktime_t deadline; + /** * @parent: the fence returned by &drm_sched_backend_ops.run_job * when scheduling the job on hardware. We signal the @@ -505,6 +511,8 @@ void drm_sched_entity_set_priority(struct drm_sched_entity *entity, enum drm_sched_priority priority); bool drm_sched_entity_is_ready(struct drm_sched_entity *entity); +void drm_sched_fence_set_parent(struct drm_sched_fence *s_fence, + struct dma_fence *fence); struct drm_sched_fence *drm_sched_fence_alloc( struct drm_sched_entity *s_entity, void *owner); void drm_sched_fence_init(struct drm_sched_fence *fence, From patchwork Fri Sep 3 18:47:56 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Rob Clark X-Patchwork-Id: 12474953 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=-15.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, 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 CD7EAC433F5 for ; Fri, 3 Sep 2021 18:44:20 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B74F46054E for ; Fri, 3 Sep 2021 18:44:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1350398AbhICSpS (ORCPT ); Fri, 3 Sep 2021 14:45:18 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41322 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1350394AbhICSpP (ORCPT ); Fri, 3 Sep 2021 14:45:15 -0400 Received: from mail-pf1-x42e.google.com (mail-pf1-x42e.google.com [IPv6:2607:f8b0:4864:20::42e]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9BEB1C061575; Fri, 3 Sep 2021 11:44:14 -0700 (PDT) Received: by mail-pf1-x42e.google.com with SMTP id 7so185918pfl.10; Fri, 03 Sep 2021 11:44:14 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=TpkeEXQhr2S4UyzNS56PH0wCmoq9BqqIoAycaUiRzLM=; b=MWYb8+Wx94RLvX+9nMejKt+HFvRaynp/aUd5gK9H5km59ETJi3vhlU0uYS7hlYw1DG ZoUbX2PsBhub43c1Li4MlH4DmpTrzEXfuzhIHedDXPw4/XQuYXX1CJqhuzwsd0wswy0z YGgSA+Nb4df1pcUb5PdBVGrKNaoaYj2igqynRoLy7W5NE1LfpvpKa9LwRbRRPHLaLepJ VFE4MfrznvlqAj5/Jrm/rpYclalbcz+flkkFcDY90SevgD+nm1DH1zZqFnKU1CJ7v198 SEGuAKhsp9YIF7nEnP/SCm9y0C8fjXChKIbv6bvZeBlAekWpKka3vUqtg/Y2yi786Yfd s6fw== 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=TpkeEXQhr2S4UyzNS56PH0wCmoq9BqqIoAycaUiRzLM=; b=LWJbkh/tHiGG42JrlmqXQjY+R8L6KuR6i4G8/dSfDCZbvL+/QozxlJaHJZ3SIoDU2p 4So8HxIJLtRVf6bV6YwrftcnHS7c4c6gJrCUfozOG0JJQcSvddPI+r68AKtO5Oi45X00 fVLClqdFTr0SMQTyPObbyb82Qg6pViRmdSTqyQxjKDU45CtkG7NTehRkhHOc4hWqTINp PPqlCBUEMIxECim0KYSMpwMiohvx82GySlll90SqLg99Ko/LngaNAX8a1HuwWO39UQFO /x1q9hKW+VZz5tTqImt8gliPmUv31grXzx7/q3hsYQHUQCDkZmYNFu142LYqyzm6LCYc XGrQ== X-Gm-Message-State: AOAM533pppHkID4ReVM+Za152KIDNhSiFj6rNOL9gV8sETxpkBqJ34l4 N43gZXfqtbz8rFoXpQH/uCs= X-Google-Smtp-Source: ABdhPJzrvdVGOYcyYPX2R4Agp5VOc7qckJZ/WfzP4RTdStIi5O1jsKGTvyrP8hEjGTfegIJbS1itRg== X-Received: by 2002:a65:6898:: with SMTP id e24mr382103pgt.133.1630694654129; Fri, 03 Sep 2021 11:44:14 -0700 (PDT) Received: from localhost (c-73-25-156-94.hsd1.or.comcast.net. [73.25.156.94]) by smtp.gmail.com with ESMTPSA id n10sm32235pjp.3.2021.09.03.11.44.12 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 03 Sep 2021 11:44:13 -0700 (PDT) From: Rob Clark To: dri-devel@lists.freedesktop.org, linaro-mm-sig@lists.linaro.org Cc: Daniel Vetter , =?utf-8?q?Christian_K=C3=B6nig?= , =?utf-8?q?Michel_D=C3=A4nzer?= , Pekka Paalanen , Rob Clark , Rob Clark , Sean Paul , David Airlie , Sumit Semwal , =?utf-8?q?Christian_K=C3=B6nig?= , linux-arm-msm@vger.kernel.org (open list:DRM DRIVER FOR MSM ADRENO GPU), freedreno@lists.freedesktop.org (open list:DRM DRIVER FOR MSM ADRENO GPU), linux-kernel@vger.kernel.org (open list), linux-media@vger.kernel.org (open list:DMA BUFFER SHARING FRAMEWORK) Subject: [PATCH v3 5/9] drm/msm: Add deadline based boost support Date: Fri, 3 Sep 2021 11:47:56 -0700 Message-Id: <20210903184806.1680887-6-robdclark@gmail.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210903184806.1680887-1-robdclark@gmail.com> References: <20210903184806.1680887-1-robdclark@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org From: Rob Clark Signed-off-by: Rob Clark --- drivers/gpu/drm/msm/msm_fence.c | 76 +++++++++++++++++++++++++++ drivers/gpu/drm/msm/msm_fence.h | 20 +++++++ drivers/gpu/drm/msm/msm_gpu.h | 1 + drivers/gpu/drm/msm/msm_gpu_devfreq.c | 20 +++++++ 4 files changed, 117 insertions(+) diff --git a/drivers/gpu/drm/msm/msm_fence.c b/drivers/gpu/drm/msm/msm_fence.c index f2cece542c3f..67c2a96e1c85 100644 --- a/drivers/gpu/drm/msm/msm_fence.c +++ b/drivers/gpu/drm/msm/msm_fence.c @@ -8,6 +8,37 @@ #include "msm_drv.h" #include "msm_fence.h" +#include "msm_gpu.h" + +static inline bool fence_completed(struct msm_fence_context *fctx, uint32_t fence); + +static struct msm_gpu *fctx2gpu(struct msm_fence_context *fctx) +{ + struct msm_drm_private *priv = fctx->dev->dev_private; + return priv->gpu; +} + +static enum hrtimer_restart deadline_timer(struct hrtimer *t) +{ + struct msm_fence_context *fctx = container_of(t, + struct msm_fence_context, deadline_timer); + + kthread_queue_work(fctx2gpu(fctx)->worker, &fctx->deadline_work); + + return HRTIMER_NORESTART; +} + +static void deadline_work(struct kthread_work *work) +{ + struct msm_fence_context *fctx = container_of(work, + struct msm_fence_context, deadline_work); + + /* If deadline fence has already passed, nothing to do: */ + if (fence_completed(fctx, fctx->next_deadline_fence)) + return; + + msm_devfreq_boost(fctx2gpu(fctx), 2); +} struct msm_fence_context * @@ -26,6 +57,13 @@ msm_fence_context_alloc(struct drm_device *dev, volatile uint32_t *fenceptr, fctx->fenceptr = fenceptr; spin_lock_init(&fctx->spinlock); + hrtimer_init(&fctx->deadline_timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS); + fctx->deadline_timer.function = deadline_timer; + + kthread_init_work(&fctx->deadline_work, deadline_work); + + fctx->next_deadline = ktime_get(); + return fctx; } @@ -49,6 +87,8 @@ void msm_update_fence(struct msm_fence_context *fctx, uint32_t fence) { spin_lock(&fctx->spinlock); fctx->completed_fence = max(fence, fctx->completed_fence); + if (fence_completed(fctx, fctx->next_deadline_fence)) + hrtimer_cancel(&fctx->deadline_timer); spin_unlock(&fctx->spinlock); } @@ -79,10 +119,46 @@ static bool msm_fence_signaled(struct dma_fence *fence) return fence_completed(f->fctx, f->base.seqno); } +static void msm_fence_set_deadline(struct dma_fence *fence, ktime_t deadline) +{ + struct msm_fence *f = to_msm_fence(fence); + struct msm_fence_context *fctx = f->fctx; + unsigned long flags; + ktime_t now; + + spin_lock_irqsave(&fctx->spinlock, flags); + now = ktime_get(); + + if (ktime_after(now, fctx->next_deadline) || + ktime_before(deadline, fctx->next_deadline)) { + fctx->next_deadline = deadline; + fctx->next_deadline_fence = + max(fctx->next_deadline_fence, (uint32_t)fence->seqno); + + /* + * Set timer to trigger boost 3ms before deadline, or + * if we are already less than 3ms before the deadline + * schedule boost work immediately. + */ + deadline = ktime_sub(deadline, ms_to_ktime(3)); + + if (ktime_after(now, deadline)) { + kthread_queue_work(fctx2gpu(fctx)->worker, + &fctx->deadline_work); + } else { + hrtimer_start(&fctx->deadline_timer, deadline, + HRTIMER_MODE_ABS); + } + } + + spin_unlock_irqrestore(&fctx->spinlock, flags); +} + static const struct dma_fence_ops msm_fence_ops = { .get_driver_name = msm_fence_get_driver_name, .get_timeline_name = msm_fence_get_timeline_name, .signaled = msm_fence_signaled, + .set_deadline = msm_fence_set_deadline, }; struct dma_fence * diff --git a/drivers/gpu/drm/msm/msm_fence.h b/drivers/gpu/drm/msm/msm_fence.h index 4783db528bcc..d34e853c555a 100644 --- a/drivers/gpu/drm/msm/msm_fence.h +++ b/drivers/gpu/drm/msm/msm_fence.h @@ -50,6 +50,26 @@ struct msm_fence_context { volatile uint32_t *fenceptr; spinlock_t spinlock; + + /* + * TODO this doesn't really deal with multiple deadlines, like + * if userspace got multiple frames ahead.. OTOH atomic updates + * don't queue, so maybe that is ok + */ + + /** next_deadline: Time of next deadline */ + ktime_t next_deadline; + + /** + * next_deadline_fence: + * + * Fence value for next pending deadline. The deadline timer is + * canceled when this fence is signaled. + */ + uint32_t next_deadline_fence; + + struct hrtimer deadline_timer; + struct kthread_work deadline_work; }; struct msm_fence_context * msm_fence_context_alloc(struct drm_device *dev, diff --git a/drivers/gpu/drm/msm/msm_gpu.h b/drivers/gpu/drm/msm/msm_gpu.h index 0e4b45bff2e6..e031c9b495ed 100644 --- a/drivers/gpu/drm/msm/msm_gpu.h +++ b/drivers/gpu/drm/msm/msm_gpu.h @@ -425,6 +425,7 @@ void msm_devfreq_init(struct msm_gpu *gpu); void msm_devfreq_cleanup(struct msm_gpu *gpu); void msm_devfreq_resume(struct msm_gpu *gpu); void msm_devfreq_suspend(struct msm_gpu *gpu); +void msm_devfreq_boost(struct msm_gpu *gpu, unsigned factor); void msm_devfreq_active(struct msm_gpu *gpu); void msm_devfreq_idle(struct msm_gpu *gpu); diff --git a/drivers/gpu/drm/msm/msm_gpu_devfreq.c b/drivers/gpu/drm/msm/msm_gpu_devfreq.c index 0a1ee20296a2..8a8d7b9028a3 100644 --- a/drivers/gpu/drm/msm/msm_gpu_devfreq.c +++ b/drivers/gpu/drm/msm/msm_gpu_devfreq.c @@ -144,6 +144,26 @@ void msm_devfreq_suspend(struct msm_gpu *gpu) devfreq_suspend_device(gpu->devfreq.devfreq); } +void msm_devfreq_boost(struct msm_gpu *gpu, unsigned factor) +{ + struct msm_gpu_devfreq *df = &gpu->devfreq; + unsigned long freq; + + /* + * Hold devfreq lock to synchronize with get_dev_status()/ + * target() callbacks + */ + mutex_lock(&df->devfreq->lock); + + freq = get_freq(gpu); + + freq *= factor; + + msm_devfreq_target(&gpu->pdev->dev, &freq, 0); + + mutex_unlock(&df->devfreq->lock); +} + void msm_devfreq_active(struct msm_gpu *gpu) { struct msm_gpu_devfreq *df = &gpu->devfreq; From patchwork Fri Sep 3 18:47:57 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Rob Clark X-Patchwork-Id: 12474955 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=-15.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, 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 E2134C4332F for ; Fri, 3 Sep 2021 18:44:25 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C96366054E for ; Fri, 3 Sep 2021 18:44:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1350470AbhICSpY (ORCPT ); Fri, 3 Sep 2021 14:45:24 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41334 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1350056AbhICSpQ (ORCPT ); Fri, 3 Sep 2021 14:45:16 -0400 Received: from mail-pf1-x432.google.com (mail-pf1-x432.google.com [IPv6:2607:f8b0:4864:20::432]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8B3AEC061764; Fri, 3 Sep 2021 11:44:16 -0700 (PDT) Received: by mail-pf1-x432.google.com with SMTP id 7so185985pfl.10; Fri, 03 Sep 2021 11:44:16 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=ePxJybomMw7KwNl/06F/f9BuSUg0DBEjdIp9sOebF7o=; b=BvMTOHBoJQkt0BIhnKLwCwWsS493zyVEfOi0uWmcJC2buz2melLUXyaqwMUK4fSo3I y3aDAag69Mz6ynkPjigXyEg9Jl0nV+MYC1ndP1ma/Lh44jH/QjHOSs6x/3U/H1rD3bHS mGsKVnKN3FCYSTm655cSyebyavRCqtX2W3RFDB86rHu6twvqj4jx5KGUAgBKK/nWaiND dPap3WbMNgoBPMYK+DkbLTNIVDSf/Zi0N/glyV5rQz1uZ+3yUxXWiSjQrQONKO06UL+g gCo2fQMcpUmwzjBRHMY/2iVs3gkNmgkKjLnhHIvrWnKiOFne/vCmrW31siHiRvex8buq e2cg== 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=ePxJybomMw7KwNl/06F/f9BuSUg0DBEjdIp9sOebF7o=; b=pb+sm67XgTj147EiaPWXOcnpb+cON0rWdoJ0Sa/uuSXwXAHfvVPCkDhhlN2NnTMRJ2 CobIYIM9BgC0u95f5eGyzKmxbTZqUaVd7f+kCGdMLTbGWVIIWexqMRtE3xQypxLWtE2i 8A4A794NMnV3pnVaf0PK5KBfr45dg2IyUlzuKN/zNzkAd741siPeDafIiNSiVuYNVnBw zo3OLTiNvYiFOgfHn9F9P9zB2baRVdkntzZdB4wbti/m+K1NHUlvnYuuSaqQxAuAmO0B Ke1nTwb9dp/B+i8mp1bO+en284C1KyykES6Z3hOA2a4AhiJqG7exdRYkJOiJWP8zMKkD Fnaw== X-Gm-Message-State: AOAM533Xi5ir52tqwpSGJ6+zziJSy4Gj93q478uA6aHjd/f8xtiJoULn FKoEgHzQRwb3pAquZI3K/fI= X-Google-Smtp-Source: ABdhPJyGwtF5mT3HvxEWHeK5JnkHczkKSvr/MzHyDH1596nS2xrPI0PFohMJe721nbImhGOHVn4BLA== X-Received: by 2002:a63:6f83:: with SMTP id k125mr365747pgc.379.1630694655988; Fri, 03 Sep 2021 11:44:15 -0700 (PDT) Received: from localhost (c-73-25-156-94.hsd1.or.comcast.net. [73.25.156.94]) by smtp.gmail.com with ESMTPSA id n13sm113692pff.164.2021.09.03.11.44.15 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 03 Sep 2021 11:44:15 -0700 (PDT) From: Rob Clark To: dri-devel@lists.freedesktop.org, linaro-mm-sig@lists.linaro.org Cc: Daniel Vetter , =?utf-8?q?Christian_K=C3=B6nig?= , =?utf-8?q?Michel_D=C3=A4nzer?= , Pekka Paalanen , Rob Clark , Sumit Semwal , Gustavo Padovan , =?utf-8?q?Christian_K=C3=B6nig?= , linux-media@vger.kernel.org (open list:SYNC FILE FRAMEWORK), linux-kernel@vger.kernel.org (open list) Subject: [PATCH v3 6/9] dma-buf/fence-array: Add fence deadline support Date: Fri, 3 Sep 2021 11:47:57 -0700 Message-Id: <20210903184806.1680887-7-robdclark@gmail.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210903184806.1680887-1-robdclark@gmail.com> References: <20210903184806.1680887-1-robdclark@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org From: Rob Clark Signed-off-by: Rob Clark --- drivers/dma-buf/dma-fence-array.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/drivers/dma-buf/dma-fence-array.c b/drivers/dma-buf/dma-fence-array.c index d3fbd950be94..8d194b09ee3d 100644 --- a/drivers/dma-buf/dma-fence-array.c +++ b/drivers/dma-buf/dma-fence-array.c @@ -119,12 +119,23 @@ static void dma_fence_array_release(struct dma_fence *fence) dma_fence_free(fence); } +static void dma_fence_array_set_deadline(struct dma_fence *fence, + ktime_t deadline) +{ + struct dma_fence_array *array = to_dma_fence_array(fence); + unsigned i; + + for (i = 0; i < array->num_fences; ++i) + dma_fence_set_deadline(array->fences[i], deadline); +} + const struct dma_fence_ops dma_fence_array_ops = { .get_driver_name = dma_fence_array_get_driver_name, .get_timeline_name = dma_fence_array_get_timeline_name, .enable_signaling = dma_fence_array_enable_signaling, .signaled = dma_fence_array_signaled, .release = dma_fence_array_release, + .set_deadline = dma_fence_array_set_deadline, }; EXPORT_SYMBOL(dma_fence_array_ops); From patchwork Fri Sep 3 18:47:58 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Rob Clark X-Patchwork-Id: 12474957 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=-15.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, 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 A8E08C433F5 for ; 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[73.25.156.94]) by smtp.gmail.com with ESMTPSA id h24sm113360pfn.180.2021.09.03.11.44.16 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 03 Sep 2021 11:44:17 -0700 (PDT) From: Rob Clark To: dri-devel@lists.freedesktop.org, linaro-mm-sig@lists.linaro.org Cc: Daniel Vetter , =?utf-8?q?Christian_K=C3=B6nig?= , =?utf-8?q?Michel_D=C3=A4nzer?= , Pekka Paalanen , Rob Clark , Sumit Semwal , Gustavo Padovan , =?utf-8?q?Christian_K=C3=B6nig?= , linux-media@vger.kernel.org (open list:SYNC FILE FRAMEWORK), linux-kernel@vger.kernel.org (open list) Subject: [PATCH v3 7/9] dma-buf/fence-chain: Add fence deadline support Date: Fri, 3 Sep 2021 11:47:58 -0700 Message-Id: <20210903184806.1680887-8-robdclark@gmail.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210903184806.1680887-1-robdclark@gmail.com> References: <20210903184806.1680887-1-robdclark@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org From: Rob Clark Signed-off-by: Rob Clark Reviewed-by: Christian König for this one. --- drivers/dma-buf/dma-fence-chain.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/drivers/dma-buf/dma-fence-chain.c b/drivers/dma-buf/dma-fence-chain.c index 1b4cb3e5cec9..736a9ad3ea6d 100644 --- a/drivers/dma-buf/dma-fence-chain.c +++ b/drivers/dma-buf/dma-fence-chain.c @@ -208,6 +208,18 @@ static void dma_fence_chain_release(struct dma_fence *fence) dma_fence_free(fence); } + +static void dma_fence_chain_set_deadline(struct dma_fence *fence, + ktime_t deadline) +{ + dma_fence_chain_for_each(fence, fence) { + struct dma_fence_chain *chain = to_dma_fence_chain(fence); + struct dma_fence *f = chain ? chain->fence : fence; + + dma_fence_set_deadline(f, deadline); + } +} + const struct dma_fence_ops dma_fence_chain_ops = { .use_64bit_seqno = true, .get_driver_name = dma_fence_chain_get_driver_name, @@ -215,6 +227,7 @@ const struct dma_fence_ops dma_fence_chain_ops = { .enable_signaling = dma_fence_chain_enable_signaling, .signaled = dma_fence_chain_signaled, .release = dma_fence_chain_release, + .set_deadline = dma_fence_chain_set_deadline, }; EXPORT_SYMBOL(dma_fence_chain_ops); From patchwork Fri Sep 3 18:47:59 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Rob Clark X-Patchwork-Id: 12474959 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=-15.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, 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 5D647C433EF for ; Fri, 3 Sep 2021 18:44:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3F90C610A2 for ; Fri, 3 Sep 2021 18:44:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1350503AbhICSpj (ORCPT ); Fri, 3 Sep 2021 14:45:39 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41412 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1350478AbhICSp0 (ORCPT ); Fri, 3 Sep 2021 14:45:26 -0400 Received: from mail-pl1-x635.google.com (mail-pl1-x635.google.com [IPv6:2607:f8b0:4864:20::635]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E2068C0613A3; Fri, 3 Sep 2021 11:44:20 -0700 (PDT) Received: by mail-pl1-x635.google.com with SMTP id n4so67338plh.9; Fri, 03 Sep 2021 11:44:20 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=9nem1cpi4gOKpKGLCYjoRtQFtt8o9c5PZTImpcjZKvE=; b=LKAD83XB0VEg3l7w8sZ06HeYmjxV4js1ItmdE2f6y9JO4gI4Xl5oHH3qBHQbkY2e7Z kAA0mTLeqAxRybRes1bdaXCG8rrkjhf24fd+1uue33AfpYxDEBl9iMJSEehC4iIF7JcL PLogSYquqHGPPXzsLfP8RFJkjganM0XByZB/87im5Z60WzZqXz0EvZ6x1g82MSWj0xRO EkPjxSCyuDI8J7efwTyhQoxGg9Af+BA/93HQLJAlJKWEgzQUJ2sUXxfJbjg9t5/WA6lC YMxzBQFB7wEkVgSQlzGM/sg+MHzCAI9Ny2/b+3D14+W5oAw8kUoCQWrr0cRBhzLZzs5g pOlQ== 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=9nem1cpi4gOKpKGLCYjoRtQFtt8o9c5PZTImpcjZKvE=; b=BeXJH+rC7q1jR27XaweLXv7ku5W8k94HshupAVXgLNb9ysJ3IkeWO2ZXQwGtVfFExj siy2bJsARl8uCbsbDdbx+nPoYbJLBUPUr90UvkNicT3HZzvEvh0gJgoIzPtPX+z7R0aY eVn2kbyBXLrQGv1aUtyIcXyXhcznNxm7SgmMgJxSog3+RaaVesFjBqXAKZ/ZWYMsztgJ CRUgkGYhaRLb1IAY1vQUksdIh+5uSjw2E8EFwQUqDrldnpizCF1CikM42uQ8BCoBG60W QLNp6VcBVYCsYLNRr1QhLKXZX+r5cp9nXHfEnuCp2SsKWu1c5Vxtx3LIirxB0QQC9eXj Z+5g== X-Gm-Message-State: AOAM533sKgxjQZwweJwqFH0ELJmUafFt8FFrKZMGqW17epwJSuFewV4a TWQG+dAgL1Z6aZtP4kJN1Ws= X-Google-Smtp-Source: ABdhPJyGjeGwkXqEh5bQxSbpscn/Ym2q9Q5yOoGAKWphqGneFJ1WnxAItza/IWMRqPXAEWacgfqekA== X-Received: by 2002:a17:902:e801:b0:138:8b70:b374 with SMTP id u1-20020a170902e80100b001388b70b374mr239531plg.0.1630694660413; Fri, 03 Sep 2021 11:44:20 -0700 (PDT) Received: from localhost (c-73-25-156-94.hsd1.or.comcast.net. [73.25.156.94]) by smtp.gmail.com with ESMTPSA id t186sm126836pfb.53.2021.09.03.11.44.18 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 03 Sep 2021 11:44:19 -0700 (PDT) From: Rob Clark To: dri-devel@lists.freedesktop.org, linaro-mm-sig@lists.linaro.org Cc: Daniel Vetter , =?utf-8?q?Christian_K=C3=B6nig?= , =?utf-8?q?Michel_D=C3=A4nzer?= , Pekka Paalanen , Rob Clark , Sumit Semwal , Gustavo Padovan , =?utf-8?q?Christian_K=C3=B6nig?= , linux-media@vger.kernel.org (open list:SYNC FILE FRAMEWORK), linux-kernel@vger.kernel.org (open list) Subject: [PATCH v3 8/9] dma-buf/sync_file: Add SET_DEADLINE ioctl Date: Fri, 3 Sep 2021 11:47:59 -0700 Message-Id: <20210903184806.1680887-9-robdclark@gmail.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210903184806.1680887-1-robdclark@gmail.com> References: <20210903184806.1680887-1-robdclark@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org From: Rob Clark The initial purpose is for igt tests, but this would also be useful for compositors that wait until close to vblank deadline to make decisions about which frame to show. Signed-off-by: Rob Clark --- drivers/dma-buf/sync_file.c | 19 +++++++++++++++++++ include/uapi/linux/sync_file.h | 20 ++++++++++++++++++++ 2 files changed, 39 insertions(+) diff --git a/drivers/dma-buf/sync_file.c b/drivers/dma-buf/sync_file.c index 394e6e1e9686..f295772d5169 100644 --- a/drivers/dma-buf/sync_file.c +++ b/drivers/dma-buf/sync_file.c @@ -459,6 +459,22 @@ static long sync_file_ioctl_fence_info(struct sync_file *sync_file, return ret; } +static int sync_file_ioctl_set_deadline(struct sync_file *sync_file, + unsigned long arg) +{ + struct sync_set_deadline ts; + + if (copy_from_user(&ts, (void __user *)arg, sizeof(ts))) + return -EFAULT; + + if (ts.pad) + return -EINVAL; + + dma_fence_set_deadline(sync_file->fence, ktime_set(ts.tv_sec, ts.tv_nsec)); + + return 0; +} + static long sync_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg) { @@ -471,6 +487,9 @@ static long sync_file_ioctl(struct file *file, unsigned int cmd, case SYNC_IOC_FILE_INFO: return sync_file_ioctl_fence_info(sync_file, arg); + case SYNC_IOC_SET_DEADLINE: + return sync_file_ioctl_set_deadline(sync_file, arg); + default: return -ENOTTY; } diff --git a/include/uapi/linux/sync_file.h b/include/uapi/linux/sync_file.h index ee2dcfb3d660..f67d4ffe7566 100644 --- a/include/uapi/linux/sync_file.h +++ b/include/uapi/linux/sync_file.h @@ -67,6 +67,18 @@ struct sync_file_info { __u64 sync_fence_info; }; +/** + * struct sync_set_deadline - set a deadline on a fence + * @tv_sec: seconds elapsed since epoch + * @tv_nsec: nanoseconds elapsed since the time given by the tv_sec + * @pad: must be zero + */ +struct sync_set_deadline { + __s64 tv_sec; + __s32 tv_nsec; + __u32 pad; +}; + #define SYNC_IOC_MAGIC '>' /** @@ -95,4 +107,12 @@ struct sync_file_info { */ #define SYNC_IOC_FILE_INFO _IOWR(SYNC_IOC_MAGIC, 4, struct sync_file_info) + +/** + * DOC: SYNC_IOC_SET_DEADLINE - set a deadline on a fence + * + * Allows userspace to set a deadline on a fence, see dma_fence_set_deadline() + */ +#define SYNC_IOC_SET_DEADLINE _IOW(SYNC_IOC_MAGIC, 5, struct sync_set_deadline) + #endif /* _UAPI_LINUX_SYNC_H */ From patchwork Fri Sep 3 18:48:00 2021 Content-Type: text/plain; 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[73.25.156.94]) by smtp.gmail.com with ESMTPSA id s15sm121202pfu.67.2021.09.03.11.44.21 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 03 Sep 2021 11:44:21 -0700 (PDT) From: Rob Clark To: dri-devel@lists.freedesktop.org, linaro-mm-sig@lists.linaro.org Cc: Daniel Vetter , =?utf-8?q?Christian_K=C3=B6nig?= , =?utf-8?q?Michel_D=C3=A4nzer?= , Pekka Paalanen , Rob Clark , Sumit Semwal , Gustavo Padovan , =?utf-8?q?Christian_K=C3=B6nig?= , linux-media@vger.kernel.org (open list:SYNC FILE FRAMEWORK), linux-kernel@vger.kernel.org (open list) Subject: [PATCH v3 9/9] dma-buf/sw_sync: Add fence deadline support Date: Fri, 3 Sep 2021 11:48:00 -0700 Message-Id: <20210903184806.1680887-10-robdclark@gmail.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210903184806.1680887-1-robdclark@gmail.com> References: <20210903184806.1680887-1-robdclark@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org From: Rob Clark This consists of simply storing the most recent deadline, and adding an ioctl to retrieve the deadline. This can be used in conjunction with the SET_DEADLINE ioctl on a fence fd for testing. Ie. create various sw_sync fences, merge them into a fence-array, set deadline on the fence-array and confirm that it is propagated properly to each fence. Signed-off-by: Rob Clark --- drivers/dma-buf/sw_sync.c | 58 ++++++++++++++++++++++++++++++++++++ drivers/dma-buf/sync_debug.h | 2 ++ 2 files changed, 60 insertions(+) diff --git a/drivers/dma-buf/sw_sync.c b/drivers/dma-buf/sw_sync.c index 348b3a9170fa..50f2638cccd3 100644 --- a/drivers/dma-buf/sw_sync.c +++ b/drivers/dma-buf/sw_sync.c @@ -52,12 +52,26 @@ struct sw_sync_create_fence_data { __s32 fence; /* fd of new fence */ }; +/** + * struct sw_sync_get_deadline - get the deadline of a sw_sync fence + * @tv_sec: seconds elapsed since epoch (out) + * @tv_nsec: nanoseconds elapsed since the time given by the tv_sec (out) + * @fence_fd: the sw_sync fence fd (in) + */ +struct sw_sync_get_deadline { + __s64 tv_sec; + __s32 tv_nsec; + __s32 fence_fd; +}; + #define SW_SYNC_IOC_MAGIC 'W' #define SW_SYNC_IOC_CREATE_FENCE _IOWR(SW_SYNC_IOC_MAGIC, 0,\ struct sw_sync_create_fence_data) #define SW_SYNC_IOC_INC _IOW(SW_SYNC_IOC_MAGIC, 1, __u32) +#define SW_SYNC_GET_DEADLINE _IOWR(SW_SYNC_IOC_MAGIC, 2, \ + struct sw_sync_get_deadline) static const struct dma_fence_ops timeline_fence_ops; @@ -171,6 +185,13 @@ static void timeline_fence_timeline_value_str(struct dma_fence *fence, snprintf(str, size, "%d", parent->value); } +static void timeline_fence_set_deadline(struct dma_fence *fence, ktime_t deadline) +{ + struct sync_pt *pt = dma_fence_to_sync_pt(fence); + + pt->deadline = deadline; +} + static const struct dma_fence_ops timeline_fence_ops = { .get_driver_name = timeline_fence_get_driver_name, .get_timeline_name = timeline_fence_get_timeline_name, @@ -179,6 +200,7 @@ static const struct dma_fence_ops timeline_fence_ops = { .release = timeline_fence_release, .fence_value_str = timeline_fence_value_str, .timeline_value_str = timeline_fence_timeline_value_str, + .set_deadline = timeline_fence_set_deadline, }; /** @@ -387,6 +409,39 @@ static long sw_sync_ioctl_inc(struct sync_timeline *obj, unsigned long arg) return 0; } +static int sw_sync_ioctl_get_deadline(struct sync_timeline *obj, unsigned long arg) +{ + struct sw_sync_get_deadline data; + struct timespec64 ts; + struct dma_fence *fence; + struct sync_pt *pt; + + if (copy_from_user(&data, (void __user *)arg, sizeof(data))) + return -EFAULT; + + if (data.tv_sec || data.tv_nsec) + return -EINVAL; + + fence = sync_file_get_fence(data.fence_fd); + if (!fence) + return -EINVAL; + + pt = dma_fence_to_sync_pt(fence); + if (!pt) + return -EINVAL; + + ts = ktime_to_timespec64(pt->deadline); + data.tv_sec = ts.tv_sec; + data.tv_nsec = ts.tv_nsec; + + dma_fence_put(fence); + + if (copy_to_user((void __user *)arg, &data, sizeof(data))) + return -EFAULT; + + return 0; +} + static long sw_sync_ioctl(struct file *file, unsigned int cmd, unsigned long arg) { @@ -399,6 +454,9 @@ static long sw_sync_ioctl(struct file *file, unsigned int cmd, case SW_SYNC_IOC_INC: return sw_sync_ioctl_inc(obj, arg); + case SW_SYNC_GET_DEADLINE: + return sw_sync_ioctl_get_deadline(obj, arg); + default: return -ENOTTY; } diff --git a/drivers/dma-buf/sync_debug.h b/drivers/dma-buf/sync_debug.h index 6176e52ba2d7..2e0146d0bdbb 100644 --- a/drivers/dma-buf/sync_debug.h +++ b/drivers/dma-buf/sync_debug.h @@ -55,11 +55,13 @@ static inline struct sync_timeline *dma_fence_parent(struct dma_fence *fence) * @base: base fence object * @link: link on the sync timeline's list * @node: node in the sync timeline's tree + * @deadline: the most recently set fence deadline */ struct sync_pt { struct dma_fence base; struct list_head link; struct rb_node node; + ktime_t deadline; }; extern const struct file_operations sw_sync_debugfs_fops;