From patchwork Mon May 10 09:50:13 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Claire Chang X-Patchwork-Id: 12247437 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 9C5F9C433B4 for ; Mon, 10 May 2021 09:50:59 +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 53DDE610CC for ; Mon, 10 May 2021 09:50:59 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 53DDE610CC Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=chromium.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=intel-gfx-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 7E37C6E453; Mon, 10 May 2021 09:50:58 +0000 (UTC) Received: from mail-pj1-x102f.google.com (mail-pj1-x102f.google.com [IPv6:2607:f8b0:4864:20::102f]) by gabe.freedesktop.org (Postfix) with ESMTPS id 37DC86E44F for ; Mon, 10 May 2021 09:50:57 +0000 (UTC) Received: by mail-pj1-x102f.google.com with SMTP id p17so9452156pjz.3 for ; Mon, 10 May 2021 02:50:57 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=xzceaTJbUUoQMRiby9lwQqwtKo4y5qZbVn1w31ybRrg=; b=bOYHl1lk+9c5fpkjvJLlW2V+ZW1HWQZ8+GqQWpRXOyRwXl5gJ0b79YDClCoBfBBm4i Lg3ZY42RA3b3XCB5qgKa30diM6DGWie5c/Bp8lBvVatzuKYQ+cRSVyrR3Vn43XQ38Fby 6vdAkHilxAu/KAE1HFPNhr6sG764ExUW8d2uc= 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=xzceaTJbUUoQMRiby9lwQqwtKo4y5qZbVn1w31ybRrg=; b=isy9jF2GUvkcKETFYJj0JfEESoGd+PMMC6PwOEeIkVArcTSHWG+ylEBX5z+gg3hlZP 9QAIW88SgQpwo8QnpMXfsJiYEVeE9Q1BzI7zNNCEvuUYo5JE78xebaDX+nTRR3+CTEWD toXt9Rsnrww0li1w/wMdphBCO8rV/dwq3OqatbsRG385Xwr4sIXB9YxDE3zswCaxyF7F uJMk2IhLP5XxMfYuglOF6zHcDrJmxrE5GIIarxP7diAyKATv2IFXUBTgwe7t4Wio4VHC cpn39UE9a19bSut/fP5WpWxYPEXDG/+CjLKhVRKEWgOBGThMuFAJg1L6Hl2/feWEwDq2 DCGQ== X-Gm-Message-State: AOAM532m4Gsi3LwSyxFMV/+/weG3sr9VwDH6o698/HJ8MB6xJ3moYBLt H4H6rJImmUBy+lVojsgd2RNVYw== X-Google-Smtp-Source: ABdhPJxwy0teVP8y0d4KrEbfmPne0jX/g2pgdK0Y1sxb/62SuqcTyQ5c51wqp1akhS8ac/pL7Mr0nw== X-Received: by 2002:a17:90a:bf0c:: with SMTP id c12mr25754828pjs.206.1620640256876; Mon, 10 May 2021 02:50:56 -0700 (PDT) Received: from localhost ([2401:fa00:95:205:a524:abe8:94e3:5601]) by smtp.gmail.com with UTF8SMTPSA id 14sm10615255pfv.33.2021.05.10.02.50.49 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 10 May 2021 02:50:56 -0700 (PDT) From: Claire Chang To: Rob Herring , mpe@ellerman.id.au, Joerg Roedel , Will Deacon , Frank Rowand , Konrad Rzeszutek Wilk , boris.ostrovsky@oracle.com, jgross@suse.com, Christoph Hellwig , Marek Szyprowski Date: Mon, 10 May 2021 17:50:13 +0800 Message-Id: <20210510095026.3477496-3-tientzu@chromium.org> X-Mailer: git-send-email 2.31.1.607.g51e8a6a459-goog In-Reply-To: <20210510095026.3477496-1-tientzu@chromium.org> References: <20210510095026.3477496-1-tientzu@chromium.org> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH v6 02/15] swiotlb: Refactor swiotlb_create_debugfs X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: heikki.krogerus@linux.intel.com, thomas.hellstrom@linux.intel.com, peterz@infradead.org, benh@kernel.crashing.org, dri-devel@lists.freedesktop.org, chris@chris-wilson.co.uk, grant.likely@arm.com, paulus@samba.org, mingo@kernel.org, jxgao@google.com, sstabellini@kernel.org, Saravana Kannan , xypron.glpk@gmx.de, "Rafael J . Wysocki" , Bartosz Golaszewski , bskeggs@redhat.com, linux-pci@vger.kernel.org, xen-devel@lists.xenproject.org, Thierry Reding , intel-gfx@lists.freedesktop.org, matthew.auld@intel.com, linux-devicetree , airlied@linux.ie, Robin Murphy , Nicolas Boichat , bhelgaas@google.com, tientzu@chromium.org, Dan Williams , Andy Shevchenko , nouveau@lists.freedesktop.org, Greg KH , Randy Dunlap , lkml , tfiga@chromium.org, "list@263.net:IOMMU DRIVERS" , Jim Quinlan , linuxppc-dev@lists.ozlabs.org, bauerman@linux.ibm.com Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" Split the debugfs creation to make the code reusable for supporting different bounce buffer pools, e.g. restricted DMA pool. Signed-off-by: Claire Chang Reviewed-by: Christoph Hellwig --- kernel/dma/swiotlb.c | 22 ++++++++++++++++------ 1 file changed, 16 insertions(+), 6 deletions(-) diff --git a/kernel/dma/swiotlb.c b/kernel/dma/swiotlb.c index d3232fc19385..858475bd6923 100644 --- a/kernel/dma/swiotlb.c +++ b/kernel/dma/swiotlb.c @@ -64,6 +64,7 @@ enum swiotlb_force swiotlb_force; struct io_tlb_mem *io_tlb_default_mem; +static struct dentry *debugfs_dir; /* * Max segment that we can provide which (if pages are contingous) will @@ -662,18 +663,27 @@ EXPORT_SYMBOL_GPL(is_swiotlb_active); #ifdef CONFIG_DEBUG_FS -static int __init swiotlb_create_debugfs(void) +static void swiotlb_create_debugfs(struct io_tlb_mem *mem, const char *name, + struct dentry *node) { - struct io_tlb_mem *mem = io_tlb_default_mem; - if (!mem) - return 0; - mem->debugfs = debugfs_create_dir("swiotlb", NULL); + return; + + mem->debugfs = debugfs_create_dir(name, node); debugfs_create_ulong("io_tlb_nslabs", 0400, mem->debugfs, &mem->nslabs); debugfs_create_ulong("io_tlb_used", 0400, mem->debugfs, &mem->used); +} + +static int __init swiotlb_create_default_debugfs(void) +{ + struct io_tlb_mem *mem = io_tlb_default_mem; + + swiotlb_create_debugfs(mem, "swiotlb", NULL); + debugfs_dir = mem->debugfs; + return 0; } -late_initcall(swiotlb_create_debugfs); +late_initcall(swiotlb_create_default_debugfs); #endif