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=-16.6 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,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 BEC3FC433E6 for ; Sun, 7 Feb 2021 16:10:00 +0000 (UTC) Received: from fraxinus.osuosl.org (smtp4.osuosl.org [140.211.166.137]) (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 815F864DF2 for ; Sun, 7 Feb 2021 16:10:00 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 815F864DF2 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=lst.de Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=iommu-bounces@lists.linux-foundation.org Received: from localhost (localhost [127.0.0.1]) by fraxinus.osuosl.org (Postfix) with ESMTP id 6EBC085ABE; Sun, 7 Feb 2021 16:10:00 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from fraxinus.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id USXp-ek6qH1U; Sun, 7 Feb 2021 16:09:59 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [140.211.9.56]) by fraxinus.osuosl.org (Postfix) with ESMTP id 772288453F; Sun, 7 Feb 2021 16:09:59 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id 643D4C0174; Sun, 7 Feb 2021 16:09:59 +0000 (UTC) Received: from fraxinus.osuosl.org (smtp4.osuosl.org [140.211.166.137]) by lists.linuxfoundation.org (Postfix) with ESMTP id E44A5C013A for ; Sun, 7 Feb 2021 16:09:57 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by fraxinus.osuosl.org (Postfix) with ESMTP id D3C9F822C6 for ; Sun, 7 Feb 2021 16:09:57 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from fraxinus.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id ah3ppBv8DYgo for ; Sun, 7 Feb 2021 16:09:55 +0000 (UTC) X-Greylist: from auto-whitelisted by SQLgrey-1.7.6 Received: from casper.infradead.org (casper.infradead.org [90.155.50.34]) by fraxinus.osuosl.org (Postfix) with ESMTPS id B580185ABE for ; Sun, 7 Feb 2021 16:09:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.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; bh=tHBexmHGDU8sjj38AZ8OoEmgptCGTXSoPlkiz2alw+s=; b=PBdwbGIJlKrg+agS8u5um5z3+E lRbcNlTzG3ntexPbto0mi2062ImrpQVKR3XGI4/cKR3mfaGRiJgDHdqMFG0mP1KLhbe2zWELau6xh YOi37Sez5qoaovImrcBXFeSYI28UxhVa7x6E+3aB/UaioGgM4KIS8iunU4KBsKMISwsyXxkncv/EY ltEqLzdq2KfRLnJTlX6hBx+PgpoKnaxT0DPfw5Cg0VXBcqnxvcAYaken/jlwA5MX8p28MsZpw1aey uebkJGJud2BW7OZYmg4y//+8KPP9MHqx0t9vTK7eomCKEuKDWTNHRowqZmVS/2c7Yhr8Mk8ky1CZU OASFkWow==; Received: from [2001:4bb8:184:7d04:4590:5583:6cb7:77c7] (helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.94 #2 (Red Hat Linux)) id 1l8md5-004tmP-JA; Sun, 07 Feb 2021 16:09:44 +0000 From: Christoph Hellwig To: Konrad Rzeszutek Wilk Subject: [PATCH 4/8] xen-swiotlb: remove xen_set_nslabs Date: Sun, 7 Feb 2021 17:09:30 +0100 Message-Id: <20210207160934.2955931-5-hch@lst.de> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210207160934.2955931-1-hch@lst.de> References: <20210207160934.2955931-1-hch@lst.de> MIME-Version: 1.0 X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org. See http://www.infradead.org/rpr.html Cc: Michael Ellerman , iommu@lists.linux-foundation.org, xen-devel@lists.xenproject.org, Claire Chang , linuxppc-dev@lists.ozlabs.org, Dongli Zhang X-BeenThere: iommu@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Development issues for Linux IOMMU support List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: iommu-bounces@lists.linux-foundation.org Sender: "iommu" The xen_set_nslabs function is a little weird, as it has just one caller, that caller passes a global variable as the argument, which is then overriden in the function and a derivative of it returned. Just add a cpp symbol for the default size using a readable constant and open code the remaining three lines in the caller. Signed-off-by: Christoph Hellwig --- drivers/xen/swiotlb-xen.c | 19 +++++++------------ 1 file changed, 7 insertions(+), 12 deletions(-) diff --git a/drivers/xen/swiotlb-xen.c b/drivers/xen/swiotlb-xen.c index 4298f74a083985..57f8d5fadc1fcd 100644 --- a/drivers/xen/swiotlb-xen.c +++ b/drivers/xen/swiotlb-xen.c @@ -138,16 +138,6 @@ xen_swiotlb_fixup(void *buf, size_t size, unsigned long nslabs) } while (i < nslabs); return 0; } -static unsigned long xen_set_nslabs(unsigned long nr_tbl) -{ - if (!nr_tbl) { - xen_io_tlb_nslabs = (64 * 1024 * 1024 >> IO_TLB_SHIFT); - xen_io_tlb_nslabs = ALIGN(xen_io_tlb_nslabs, IO_TLB_SEGSIZE); - } else - xen_io_tlb_nslabs = nr_tbl; - - return xen_io_tlb_nslabs << IO_TLB_SHIFT; -} enum xen_swiotlb_err { XEN_SWIOTLB_UNKNOWN = 0, @@ -170,6 +160,9 @@ static const char *xen_swiotlb_error(enum xen_swiotlb_err err) } return ""; } + +#define DEFAULT_NSLABS ALIGN(SZ_64M >> IO_TLB_SHIFT, IO_TLB_SEGSIZE) + int __ref xen_swiotlb_init(int verbose, bool early) { unsigned long bytes, order; @@ -179,8 +172,10 @@ int __ref xen_swiotlb_init(int verbose, bool early) xen_io_tlb_nslabs = swiotlb_nr_tbl(); retry: - bytes = xen_set_nslabs(xen_io_tlb_nslabs); - order = get_order(xen_io_tlb_nslabs << IO_TLB_SHIFT); + if (!xen_io_tlb_nslabs) + xen_io_tlb_nslabs = DEFAULT_NSLABS; + bytes = xen_io_tlb_nslabs << IO_TLB_SHIFT; + order = get_order(bytes); /* * IO TLB memory already allocated. Just use it. -- 2.29.2 _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu