From patchwork Thu Dec 17 23:06:12 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: John Stultz X-Patchwork-Id: 11980979 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=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 1CE23C4361B for ; Thu, 17 Dec 2020 23:06:27 +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 CFF3623A51 for ; Thu, 17 Dec 2020 23:06:26 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org CFF3623A51 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linaro.org 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 2430489A57; Thu, 17 Dec 2020 23:06:26 +0000 (UTC) Received: from mail-pj1-x102d.google.com (mail-pj1-x102d.google.com [IPv6:2607:f8b0:4864:20::102d]) by gabe.freedesktop.org (Postfix) with ESMTPS id 803FC89A4B for ; Thu, 17 Dec 2020 23:06:21 +0000 (UTC) Received: by mail-pj1-x102d.google.com with SMTP id m5so255064pjv.5 for ; Thu, 17 Dec 2020 15:06:21 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=ZzUxY+R92iIXyCaBsOADIATzq/kMO3WIktPOvJAEK0M=; b=y1i+MP6nxpUZku2pqBjU6nVReMMru3TqzVPCs9Wr2kawDgT3Rbl6Z27FslcSz46Swe xoVAHosAGhjI7aOnPsLsxEeZ7xNxfB46hHlFFGpTJRIPhP1Np8JzTR82OcbK/gEjpSJS cowRVeZibs33LWNdWONpxXfhSrlzipytxorMjEG484XY0t/NKnT3vgmrxMO5bzs6bzQE 7YZiocAFGQ2ffjZuuW6Bip4QglPBceU2BnKI11qLp0EDtQMiJsfKq2v2ku0CzTTA+rky rGyzmZKB0g5JCTB2WXhE94V1kA53PIShCIbmffIEiIj1LCnDYFb8baE8V4CcmGvT4ii7 K+eg== 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=ZzUxY+R92iIXyCaBsOADIATzq/kMO3WIktPOvJAEK0M=; b=MLCDZcH9dLYZevzyIGNmO7mNUqaEoTG8LGOdEpgEwamhz96EH4aoE8n11B13xG06se 1W+zDqqunZu1YoleqgsRmJBLSnnufpLFceSUNIR/XaPCSDxnGjhjKv/GyYSfJOznYhnS FeBtW+oILTOdQ3OaC2Nz/BJ+pOmaVjgbkjfKA0j/Ho9jaTqNG9+G+zhCkbveBPy/kxXE zqogdfvsWYDWrcTE5tXSk4nMcLgQUMxPI7ZwFioYgX/7kCRUTxjOL2Om6BVh1jl0xXhm TVAVatKO923gDbzCAa5IQyqIwhhC56kyQod/cYeNL8d0jMtQrwR6Id9qbb91EIW6Zikx fAmA== X-Gm-Message-State: AOAM530wmVjMGTDJ2Jcn28WYaOj23PZk82OKow2EZhFiL/7YDN9Hq1yL rqbyngnxswJeTi2W8sIl7s7leQ== X-Google-Smtp-Source: ABdhPJyufMB2jhDDOlwI5gRTX4PSbfLBi7TX5g878WswkcmJTvgN17xmcUy7n1BL1TSRvOIBCDRBSw== X-Received: by 2002:a17:902:b94a:b029:dc:18f2:8063 with SMTP id h10-20020a170902b94ab02900dc18f28063mr1410930pls.8.1608246381337; Thu, 17 Dec 2020 15:06:21 -0800 (PST) Received: from localhost.localdomain ([2601:1c2:680:1319:692:26ff:feda:3a81]) by smtp.gmail.com with ESMTPSA id q9sm7074036pgb.82.2020.12.17.15.06.19 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 17 Dec 2020 15:06:20 -0800 (PST) From: John Stultz To: lkml Subject: [RFC][PATCH 3/3] dma-buf: system_heap: Add deferred freeing to the system heap Date: Thu, 17 Dec 2020 23:06:12 +0000 Message-Id: <20201217230612.32397-3-john.stultz@linaro.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20201217230612.32397-1-john.stultz@linaro.org> References: <20201217230612.32397-1-john.stultz@linaro.org> 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: Sandeep Patil , dri-devel@lists.freedesktop.org, Ezequiel Garcia , Robin Murphy , James Jones , Liam Mark , Laura Abbott , Chris Goldsworthy , Hridya Valsaraju , =?utf-8?q?=C3=98rjan_Eide?= , linux-media@vger.kernel.org, Suren Baghdasaryan , Daniel Mentz Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Utilize the deferred free helper library in the system heap. This provides a nice performance bump and puts the system heap performance on par with ION. Cc: Sumit Semwal Cc: Liam Mark Cc: Chris Goldsworthy Cc: Laura Abbott Cc: Brian Starkey Cc: Hridya Valsaraju Cc: Suren Baghdasaryan Cc: Sandeep Patil Cc: Daniel Mentz Cc: Ørjan Eide Cc: Robin Murphy Cc: Ezequiel Garcia Cc: Simon Ser Cc: James Jones Cc: linux-media@vger.kernel.org Cc: dri-devel@lists.freedesktop.org Signed-off-by: John Stultz Reported-by: kernel test robot --- drivers/dma-buf/heaps/Kconfig | 1 + drivers/dma-buf/heaps/system_heap.c | 30 ++++++++++++++++++++++------- 2 files changed, 24 insertions(+), 7 deletions(-) diff --git a/drivers/dma-buf/heaps/Kconfig b/drivers/dma-buf/heaps/Kconfig index fa5e1c330cce..3c1cdecca9e2 100644 --- a/drivers/dma-buf/heaps/Kconfig +++ b/drivers/dma-buf/heaps/Kconfig @@ -5,6 +5,7 @@ config DMABUF_HEAPS_SYSTEM bool "DMA-BUF System Heap" depends on DMABUF_HEAPS select PAGE_POOL + select DMABUF_HEAPS_DEFERRED_FREE help Choose this option to enable the system dmabuf heap. The system heap is backed by pages from the buddy allocator. If in doubt, say Y. diff --git a/drivers/dma-buf/heaps/system_heap.c b/drivers/dma-buf/heaps/system_heap.c index 885e30894b77..905b304ea24b 100644 --- a/drivers/dma-buf/heaps/system_heap.c +++ b/drivers/dma-buf/heaps/system_heap.c @@ -22,6 +22,8 @@ #include #include +#include "deferred-free-helper.h" + static struct dma_heap *sys_heap; struct system_heap_buffer { @@ -32,6 +34,7 @@ struct system_heap_buffer { struct sg_table sg_table; int vmap_cnt; void *vaddr; + struct deferred_freelist_item deferred_free; }; struct dma_heap_attachment { @@ -317,30 +320,43 @@ static int system_heap_zero_buffer(struct system_heap_buffer *buffer) return ret; } -static void system_heap_dma_buf_release(struct dma_buf *dmabuf) +static void system_heap_buf_free(struct deferred_freelist_item *item, bool skip_pool) { - struct system_heap_buffer *buffer = dmabuf->priv; + struct system_heap_buffer *buffer = container_of(item, struct system_heap_buffer, deferred_free); struct sg_table *table; struct scatterlist *sg; int i, j; /* Zero the buffer pages before adding back to the pool */ - system_heap_zero_buffer(buffer); + if (!skip_pool) + if (system_heap_zero_buffer(buffer)) + skip_pool = true; // On zeroing failure, just free table = &buffer->sg_table; for_each_sg(table->sgl, sg, table->nents, i) { struct page *page = sg_page(sg); - for (j = 0; j < NUM_ORDERS; j++) { - if (compound_order(page) == orders[j]) - break; + if (skip_pool) { + __free_pages(page, compound_order(page)); + } else { + for (j = 0; j < NUM_ORDERS; j++) { + if (compound_order(page) == orders[j]) + break; + } + page_pool_put_full_page(pools[j], page, false); } - page_pool_put_full_page(pools[j], page, false); } sg_free_table(table); kfree(buffer); } +static void system_heap_dma_buf_release(struct dma_buf *dmabuf) +{ + struct system_heap_buffer *buffer = dmabuf->priv; + + deferred_free(&buffer->deferred_free, system_heap_buf_free, buffer->len); +} + static const struct dma_buf_ops system_heap_buf_ops = { .attach = system_heap_attach, .detach = system_heap_detach,