From patchwork Fri Jun 11 15:26:47 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Claire Chang X-Patchwork-Id: 12315937 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,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 9ADB2C48BE0 for ; Fri, 11 Jun 2021 15:27:33 +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 6E0D1611AE for ; Fri, 11 Jun 2021 15:27:33 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 6E0D1611AE Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=chromium.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 AC9DB6EEB6; Fri, 11 Jun 2021 15:27:32 +0000 (UTC) Received: from mail-pl1-x62a.google.com (mail-pl1-x62a.google.com [IPv6:2607:f8b0:4864:20::62a]) by gabe.freedesktop.org (Postfix) with ESMTPS id 2EF096EEB6 for ; Fri, 11 Jun 2021 15:27:31 +0000 (UTC) Received: by mail-pl1-x62a.google.com with SMTP id e1so3000612plh.8 for ; Fri, 11 Jun 2021 08:27:31 -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=POwdGvWH9uF6GuFYGDpfWh3gBTCdeay2Nuv62kz+670=; b=C9jITNUpsFL469uBCWw+ylcEXmDJHC24qGoWeq47lXmwrDoiFy9SQ+nYUnDf9eoUhJ UQMk8xg5DYQsIoGnRwISCRXEWnbFfVNYAqeVla6v7rlivkLs9OCXtvoP8+LC1h0SWDED 3sRx2R1OhX94fVL71OHRWyugi7Thhky5EB+DQ= 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=POwdGvWH9uF6GuFYGDpfWh3gBTCdeay2Nuv62kz+670=; b=DWTByRZhhdxYYRxRRUJMlEIZveUpniP3bqgngX8Ts7wg5T/nJi4k2RAtmKvRFnnufL 6Ia6QPoaBp6n9c/13iH24Ie6/HzwZffo3HLmsMbnxyY2Re/w9BVe3X9fs39LeF9CsiAb gFwn/bZucXOdCpm4wVm5dJNQHIdpdEEofcWADhTQekq26kntGLL5ojaD/GL7Eyy5N99b 54QXd074WU7dnnCbRrNC9JTfxSzXFs8ajilJPHWtZxdT1yKZfDASu7Y+oTP12SDjy+eg DEq+RA5nFAeFWn3X47Nd6v3FAORXY3AT8fLdHs7udN1S/E2nV1BXyb/4SLCNK2aAlsEH GF1A== X-Gm-Message-State: AOAM530gaxvLPk2zuRbWuyx/WQTUj1nqromu5VfTMh9frObFoTEqSo4U TGQ3BhyrwT3+ygKNQh8V/Z0b0g== X-Google-Smtp-Source: ABdhPJye589iRfRWyEdkeIKw72OE8rv2dNVWo6QIa4VZn02HOM9CDAmVKp9644S+z7efQaweuHXMtA== X-Received: by 2002:a17:90a:7bce:: with SMTP id d14mr5098913pjl.38.1623425250808; Fri, 11 Jun 2021 08:27:30 -0700 (PDT) Received: from localhost ([2401:fa00:95:205:33c8:8e01:1161:6797]) by smtp.gmail.com with UTF8SMTPSA id fs10sm10781936pjb.31.2021.06.11.08.27.23 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 11 Jun 2021 08:27:30 -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 Subject: [PATCH v9 02/14] swiotlb: Refactor swiotlb_create_debugfs Date: Fri, 11 Jun 2021 23:26:47 +0800 Message-Id: <20210611152659.2142983-3-tientzu@chromium.org> X-Mailer: git-send-email 2.32.0.272.g935e593368-goog In-Reply-To: <20210611152659.2142983-1-tientzu@chromium.org> References: <20210611152659.2142983-1-tientzu@chromium.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: heikki.krogerus@linux.intel.com, thomas.hellstrom@linux.intel.com, peterz@infradead.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 , rodrigo.vivi@intel.com, bhelgaas@google.com, tientzu@chromium.org, Dan Williams , Andy Shevchenko , 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: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" 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 --- kernel/dma/swiotlb.c | 23 ++++++++++++++++------- 1 file changed, 16 insertions(+), 7 deletions(-) diff --git a/kernel/dma/swiotlb.c b/kernel/dma/swiotlb.c index 1a1208c81e85..8a3e2b3b246d 100644 --- a/kernel/dma/swiotlb.c +++ b/kernel/dma/swiotlb.c @@ -64,6 +64,9 @@ enum swiotlb_force swiotlb_force; struct io_tlb_mem *io_tlb_default_mem; +#ifdef CONFIG_DEBUG_FS +static struct dentry *debugfs_dir; +#endif /* * Max segment that we can provide which (if pages are contingous) will @@ -664,18 +667,24 @@ EXPORT_SYMBOL_GPL(is_swiotlb_active); #ifdef CONFIG_DEBUG_FS -static int __init swiotlb_create_debugfs(void) +static void swiotlb_create_debugfs_files(struct io_tlb_mem *mem) { - struct io_tlb_mem *mem = io_tlb_default_mem; - - if (!mem) - return 0; - mem->debugfs = debugfs_create_dir("swiotlb", NULL); 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; + + debugfs_dir = debugfs_create_dir("swiotlb", NULL); + if (mem) { + mem->debugfs = debugfs_dir; + swiotlb_create_debugfs_files(mem); + } return 0; } -late_initcall(swiotlb_create_debugfs); +late_initcall(swiotlb_create_default_debugfs); #endif