From patchwork Wed Jun 26 12:27:02 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 11017767 X-Patchwork-Delegate: bhelgaas@google.com Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 3466314C0 for ; Wed, 26 Jun 2019 12:29:23 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 23F002871C for ; Wed, 26 Jun 2019 12:29:23 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 177FF287BA; Wed, 26 Jun 2019 12:29:23 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.7 required=2.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id ADE9C281D2 for ; Wed, 26 Jun 2019 12:29:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727457AbfFZM1s (ORCPT ); Wed, 26 Jun 2019 08:27:48 -0400 Received: from bombadil.infradead.org ([198.137.202.133]:42670 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726484AbfFZM1r (ORCPT ); Wed, 26 Jun 2019 08:27:47 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20170209; h=Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender :Reply-To:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From :Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help: List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=tNgbIaFusBSvgAH0tfiGZyikD01HyoX3FofXPz2PChg=; b=M5RvEFLk+xIi2sTIO00V1tX6nN Gas2OAPsm1RlVSmT8mEzUg67uQy5Ztrh4Dy2+VDFaybxSBu9cD+Zubb2kEKq3ZgXa2N3+M+MjK4RS /lvmIiR4bg6GCmFpkNQJEblVadLbxP29esClvEVUoJpempikVE3+jPaymXArWMF5wu1d+pU/lenHS O832RJqlERaIYCMWPFXMC2DpvqxzI2jLAIukePF57ECvYnIUGaEn08FT4Md+/es9ooWC8+J73/u2t wKW9puCoUaWunC/FTlqtJUVADewWKckr6vI895VX3CSClMhkQHH6I2GbIPFNNNGq5kmrXIBkvg173 XtY/cvdg==; Received: from clnet-p19-102.ikbnet.co.at ([83.175.77.102] helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.92 #3 (Red Hat Linux)) id 1hg71T-0001LI-FP; Wed, 26 Jun 2019 12:27:36 +0000 From: Christoph Hellwig To: Dan Williams , =?utf-8?b?SsOpcsO0bWUgR2xpc3Nl?= , Jason Gunthorpe , Ben Skeggs Cc: linux-mm@kvack.org, nouveau@lists.freedesktop.org, dri-devel@lists.freedesktop.org, linux-nvdimm@lists.01.org, linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, John Hubbard , Michal Hocko Subject: [PATCH 03/25] mm: remove hmm_devmem_add_resource Date: Wed, 26 Jun 2019 14:27:02 +0200 Message-Id: <20190626122724.13313-4-hch@lst.de> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190626122724.13313-1-hch@lst.de> References: <20190626122724.13313-1-hch@lst.de> MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP This function has never been used since it was first added to the kernel more than a year and a half ago, and if we ever grow a consumer of the MEMORY_DEVICE_PUBLIC infrastructure it can easily use devm_memremap_pages directly. Signed-off-by: Christoph Hellwig Reviewed-by: Jason Gunthorpe Reviewed-by: John Hubbard Acked-by: Michal Hocko --- include/linux/hmm.h | 3 --- mm/hmm.c | 50 --------------------------------------------- 2 files changed, 53 deletions(-) diff --git a/include/linux/hmm.h b/include/linux/hmm.h index 99765be3284d..5c46b0f603fd 100644 --- a/include/linux/hmm.h +++ b/include/linux/hmm.h @@ -722,9 +722,6 @@ struct hmm_devmem { struct hmm_devmem *hmm_devmem_add(const struct hmm_devmem_ops *ops, struct device *device, unsigned long size); -struct hmm_devmem *hmm_devmem_add_resource(const struct hmm_devmem_ops *ops, - struct device *device, - struct resource *res); /* * hmm_devmem_page_set_drvdata - set per-page driver data field diff --git a/mm/hmm.c b/mm/hmm.c index 00cc642b3d7e..bd260a3b6b09 100644 --- a/mm/hmm.c +++ b/mm/hmm.c @@ -1478,54 +1478,4 @@ struct hmm_devmem *hmm_devmem_add(const struct hmm_devmem_ops *ops, return devmem; } EXPORT_SYMBOL_GPL(hmm_devmem_add); - -struct hmm_devmem *hmm_devmem_add_resource(const struct hmm_devmem_ops *ops, - struct device *device, - struct resource *res) -{ - struct hmm_devmem *devmem; - void *result; - int ret; - - if (res->desc != IORES_DESC_DEVICE_PUBLIC_MEMORY) - return ERR_PTR(-EINVAL); - - dev_pagemap_get_ops(); - - devmem = devm_kzalloc(device, sizeof(*devmem), GFP_KERNEL); - if (!devmem) - return ERR_PTR(-ENOMEM); - - init_completion(&devmem->completion); - devmem->pfn_first = -1UL; - devmem->pfn_last = -1UL; - devmem->resource = res; - devmem->device = device; - devmem->ops = ops; - - ret = percpu_ref_init(&devmem->ref, &hmm_devmem_ref_release, - 0, GFP_KERNEL); - if (ret) - return ERR_PTR(ret); - - devmem->pfn_first = devmem->resource->start >> PAGE_SHIFT; - devmem->pfn_last = devmem->pfn_first + - (resource_size(devmem->resource) >> PAGE_SHIFT); - devmem->page_fault = hmm_devmem_fault; - - devmem->pagemap.type = MEMORY_DEVICE_PUBLIC; - devmem->pagemap.res = *devmem->resource; - devmem->pagemap.page_free = hmm_devmem_free; - devmem->pagemap.altmap_valid = false; - devmem->pagemap.ref = &devmem->ref; - devmem->pagemap.data = devmem; - devmem->pagemap.kill = hmm_devmem_ref_kill; - devmem->pagemap.cleanup = hmm_devmem_ref_exit; - - result = devm_memremap_pages(devmem->device, &devmem->pagemap); - if (IS_ERR(result)) - return result; - return devmem; -} -EXPORT_SYMBOL_GPL(hmm_devmem_add_resource); #endif /* CONFIG_DEVICE_PRIVATE || CONFIG_DEVICE_PUBLIC */