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 X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,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 32267C47254 for ; Fri, 1 May 2020 07:40:12 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id E1DB52071C for ; Fri, 1 May 2020 07:40:11 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="d7DrWM7P" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org E1DB52071C Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linaro.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 8FF568E000C; Fri, 1 May 2020 03:40:11 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 8AF838E0001; Fri, 1 May 2020 03:40:11 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 7EC438E000C; Fri, 1 May 2020 03:40:11 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0154.hostedemail.com [216.40.44.154]) by kanga.kvack.org (Postfix) with ESMTP id 68EF88E0001 for ; Fri, 1 May 2020 03:40:11 -0400 (EDT) Received: from smtpin25.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay03.hostedemail.com (Postfix) with ESMTP id 2A2EB824805A for ; Fri, 1 May 2020 07:40:11 +0000 (UTC) X-FDA: 76767351822.25.feet44_75fffaac6ed13 X-HE-Tag: feet44_75fffaac6ed13 X-Filterd-Recvd-Size: 5791 Received: from mail-pl1-f193.google.com (mail-pl1-f193.google.com [209.85.214.193]) by imf19.hostedemail.com (Postfix) with ESMTP for ; Fri, 1 May 2020 07:40:10 +0000 (UTC) Received: by mail-pl1-f193.google.com with SMTP id z6so3395807plk.10 for ; Fri, 01 May 2020 00:40:10 -0700 (PDT) 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; bh=68MF0mDAuQKXmyv4cM6UCkwuoNI6S07F0Y008UnFGIA=; b=d7DrWM7Pg1LzeLY9hTHX3Vu6bzl5opKrCH2QlCTt6Jrx2Kf5gZhk+v6vTLU6f+ULz2 PTiPKHZARFJ6lrB3W3f9Ywxqo6KsLZQ/vb3d1Tw5dk54Ht4in1nQE5s/8lPxhYRC9x1a D6edusf8njClbUpHSkZBebx7PTMR1SOSvH/r7MaZr6myG/iAla1rNjPRCW6OW+XNQIHt OmRiF3MrZcOxTbSbEdUqOK7VqTixWGAKbO/x12boCmXJ9u9lBV04xM/B/YgAAbeVKoUN UGDdZTWUZA10VOkmyzHXDnEI1gjDagbffVyU61Fe1nwJg3me3bJZ6FbrIMvJuUZ+dixf BcUw== 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; bh=68MF0mDAuQKXmyv4cM6UCkwuoNI6S07F0Y008UnFGIA=; b=Vq80/tTtQpQ/vVX9t1U5GSyCo9JyOt6x3UXr5WndXOaLZDhu5QzmYKeiX5QVMvecg4 v4d6ZAezOH863G5eSRwFj8BqkWNukBQ14wUPUf1geGEH1eOuBBlzZlq/pCp5WLZ/QCrB cSSREfBFEZlY8QcXBvs3335zeAr0sHFRsNxg69DAd6/YkLBvcpsKTmy1Y55m7T5LMPJJ o9pxVU7GyPOAnDT4Kue98ERq9qYGlDIbxteZipcSrHdyDaDAahyc6BiO2fo9+WGZwXFH 6enD1iR7gz3Ri6lY+I4ysdeAOcGuQMqsnyG5LC16oFNSpSfEHEozVPwQFboRBPw7GdI9 8PgA== X-Gm-Message-State: AGi0Pubr2ylcZEnceuS+CRknPBhxvniNwwHlMgh8GImx0bTQs3t6g/oB xkUOskHriZFOyGv8svCcpgNwkg== X-Google-Smtp-Source: APiQypJiEJ4kQAfPAoSZcmNCfZQu1/ZpRWQas3IjFCF2RyIzmyY+jFIehrdb4AljNbKemje+OfRRHA== X-Received: by 2002:a17:90a:3ace:: with SMTP id b72mr3264947pjc.48.1588318809841; Fri, 01 May 2020 00:40:09 -0700 (PDT) Received: from localhost.localdomain ([2601:1c2:680:1319:692:26ff:feda:3a81]) by smtp.gmail.com with ESMTPSA id w12sm1557841pfq.133.2020.05.01.00.40.06 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 01 May 2020 00:40:09 -0700 (PDT) From: John Stultz To: lkml Cc: John Stultz , Rob Herring , Sumit Semwal , "Andrew F. Davis" , Benjamin Gaignard , Liam Mark , Pratik Patel , Laura Abbott , Brian Starkey , Chenbo Feng , Alistair Strachan , Sandeep Patil , Hridya Valsaraju , Christoph Hellwig , Marek Szyprowski , Robin Murphy , Andrew Morton , devicetree@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-mm@kvack.org Subject: [RFC][PATCH 3/4] dma-buf: cma_heap: Extend logic to export CMA regions tagged with "linux,cma-heap" Date: Fri, 1 May 2020 07:39:48 +0000 Message-Id: <20200501073949.120396-4-john.stultz@linaro.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200501073949.120396-1-john.stultz@linaro.org> References: <20200501073949.120396-1-john.stultz@linaro.org> X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: This patch reworks the cma_heap initialization so that we expose both the default CMA region and any CMA regions tagged with "linux,cma-heap" in the device-tree. Cc: Rob Herring Cc: Sumit Semwal Cc: "Andrew F. Davis" Cc: Benjamin Gaignard Cc: Liam Mark Cc: Pratik Patel Cc: Laura Abbott Cc: Brian Starkey Cc: Chenbo Feng Cc: Alistair Strachan Cc: Sandeep Patil Cc: Hridya Valsaraju Cc: Christoph Hellwig Cc: Marek Szyprowski Cc: Robin Murphy Cc: Andrew Morton Cc: devicetree@vger.kernel.org Cc: dri-devel@lists.freedesktop.org Cc: linux-mm@kvack.org Signed-off-by: John Stultz --- drivers/dma-buf/heaps/cma_heap.c | 18 +++++++++--------- 1 file changed, 9 insertions(+), 9 deletions(-) diff --git a/drivers/dma-buf/heaps/cma_heap.c b/drivers/dma-buf/heaps/cma_heap.c index 626cf7fd033a..dd154e2db101 100644 --- a/drivers/dma-buf/heaps/cma_heap.c +++ b/drivers/dma-buf/heaps/cma_heap.c @@ -141,6 +141,11 @@ static int __add_cma_heap(struct cma *cma, void *data) { struct cma_heap *cma_heap; struct dma_heap_export_info exp_info; + struct cma *default_cma = dev_get_cma_area(NULL); + + /* We only add the default heap and explicitly tagged heaps */ + if (cma != default_cma && !cma_dma_heap_enabled(cma)) + return 0; cma_heap = kzalloc(sizeof(*cma_heap), GFP_KERNEL); if (!cma_heap) @@ -162,16 +167,11 @@ static int __add_cma_heap(struct cma *cma, void *data) return 0; } -static int add_default_cma_heap(void) +static int cma_heaps_init(void) { - struct cma *default_cma = dev_get_cma_area(NULL); - int ret = 0; - - if (default_cma) - ret = __add_cma_heap(default_cma, NULL); - - return ret; + cma_for_each_area(__add_cma_heap, NULL); + return 0; } -module_init(add_default_cma_heap); +module_init(cma_heaps_init); MODULE_DESCRIPTION("DMA-BUF CMA Heap"); MODULE_LICENSE("GPL v2"); -- 2.17.1